Document:

<PAGE>

                                                                   EXHIBIT 4.1.1

                          FIRST SUPPLEMENTAL INDENTURE

                                AUGUST 19, 2003

         Reference is made to that certain Indenture, dated March 14, 2001, and
as it may be amended and supplemented from time to time (the "Indenture")
between American Cellular Corporation, a Delaware corporation (the "Company"),
ACC Acquisition LLC, the Subsidiary Guarantors named therein and Bank of
Oklahoma, N.A., as successor to The Bank of New York, as successor to the United
States Trust Company of New York, as Trustee (the "Trustee"), relating to the
issuance by the Company of its 9 1/2% Senior Subordinated Notes due 2009 (the
"Notes"). Capitalized terms used without definition herein shall have the
meanings given to them in the Indenture.

         WHEREAS, the Company and the Guarantors have heretofore executed and
delivered to the Trustee the Indenture under which the Notes were issued, of
which $700 million aggregate principal amount are outstanding.

         WHEREAS, holders of $681.9 million of the Notes (the "Noteholders")
have agreed to exchange (the "Exchange") their Notes for a pro rata share (based
on the principal amount of Notes tendered divided by the outstanding aggregate
principal amount of Notes) of an aggregate of $50 million in cash and shares of
the Company's Class B common stock, with such shares of the Company's Class B
common stock exchanged immediately thereafter for 45,054,800 shares of Dobson
Communications Corporation ("Dobson Communications") Class A common stock, and
700,000 shares of a new series of convertible preferred stock of Dobson
Communications.

         WHEREAS, by tendering their Notes and agreeing to the Exchange, the
Noteholders consented to the amendments contemplated hereby.

         WHEREAS, Section 9.02 of the Indenture provides that with the consent
of the Holders of at least a majority in principal amount of the Notes then
outstanding voting as a single class, the Company and the Trustee may enter into
an amended or supplemental Indenture.

         WHEREAS, in accordance with Section 9.02 of the Indenture, the Company
and the Trustee desire to amend certain terms of the Indenture as described
below.

         WHEREAS, all conditions and requirements necessary to make this First
Supplemental Indenture a valid, binding and legal instrument in accordance with
its terms have been performed and fulfilled by the parties hereto and the
execution and delivery hereof have been in all respects duly authorized by all
necessary parties.

         WHEREAS, the entry into this First Supplemental Indenture by the
parties hereto is in all respects authorized by the provisions of the Indenture,
and the Trustee has determined that this First Supplemental Indenture is in form
satisfactory to it.

          NOW, THEREFORE, it is mutually covenanted and agreed as follows, for
the equal and proportional benefit of all Holders of the Notes.

<PAGE>

1.       Amendments to the Indenture

         Subject to Section 2 hereof, the Indenture is hereby amended in the
         following respects:

         (a)      The following sections of the Indenture shall be deleted in
                  their entirety, together with all references made thereto
                  throughout the Indenture in their entirety, and be of no force
                  and effect:

                  (i)      Section 4.03 Reports

                  (ii)     Section 4.05 Taxes

                  (iii)    Section 4.07 Restricted Payments

                  (iv)     Section 4.08 Dividend and Other Payment Restrictions
                           Affecting Subsidiaries

                  (v)      Section 4.09 Incurrence of Indebtedness

                  (vi)     Section 4.10 Future Subsidiary Guarantors

                  (vii)    Section 4.11 Asset Sales

                  (viii)   Section 4.12 Transactions with Affiliates

                  (ix)     Section 4.13 Liens

                  (x)      Section 4.14 Limitation on Layered Indebtedness

                  (xi)     Section 4.16 Offer to Repurchase Upon Change of
                           Control

                  (xii)    Section 4.17 Limitations on Line of Business

                  (xiii)   Section 4.18 Payments for Consent

                  (xiv)    Sections 5.01(a)(iii) and (v) under Merger,
                           Consolidation, or Sale of Assets

                  (xv)     Section 6.01(c) under Events of Default

                  (xvi)    Section 6.01(e) under Events of Default

                  (xvii)   Section 6.01(g) under Events of Default

                  (xviii)  Section 6.01(h) under Events of Default

                  (xix)    Section 6.01(i) under Events of Default

                                       2
<PAGE>

                  (xx)     Section 6.01(j) under Events of Default

          b) Certain terms defined in Article 1 of the Indenture shall be deemed
     deleted when references to such terms would be eliminated as a result of
     the foregoing amendments.

2. Indenture

         Except as specifically amended, supplemented or deleted by this First
Supplemental Indenture, all provisions of the Indenture as originally executed
by the Company, the Guarantors and the Trustee shall remain in full force and
effect and such Indenture is hereby ratified, confirmed and approved. The
Indenture and this First Supplemental Indenture shall be construed as one and
the same instrument.

3. Successors.

         All of the covenants, agreements and other provisions set forth in this
First Supplemental Indenture made by or on behalf of or relating to the Company,
the Guarantors or the Trustee shall bind and inure to the benefit of their
successors and assigns.

4. Counterparts

         This First Supplemental Indenture may be executed in any number of
counterparts, and all of such counterparts taken together shall be deemed to
constitute one and the same instrument.

5. Titles and Section Headings

         The titles of the Section headings herein are for the convenience of
reference only and shall not affect the construction or interpretation of any of
the provisions hereof.

6. Recitals

         The recitals contained herein shall be taken as the statements of the
Company only, and the Trustee assumes no responsibility for their correctness or
for the sufficiency or validity of this First Supplemental Indenture.

7. Governing Law

         The First Supplemental Indenture shall be construed in accordance with
and governed by the laws of the State of New York.

                                       3
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this First
Supplemental Indenture to be duly executed as of the date and year first above
written.

                                   AMERICAN CELLULAR CORPORATION

                                   By: /s/ EVERETT R. DOBSON
                                      ----------------------------------
                                      Name: Everett R. Dobson
                                      Title: President

                                   ACC ACQUISITION, LLC, as parent
                                   Guarantor

                                   By: /s/ EVERETT R. DOBSON
                                      ----------------------------------
                                      Name: Everett R. Dobson
                                      Title: President and Manager

                              ACC of Kentucky LLC, ACC Kentucky License LLC, ACC
                              of Michigan Corporation, ACC Michigan License LLC,
                              ACC of Minnesota Corporation, ACC Minnesota
                              License LLC, ACC New York I License LLC, ACC New
                              York II License LLC, ACC New York III License LLC,
                              ACC of Ohio Corporation, ACC Ohio License LLC, ACC
                              of Pennsylvania LLC, ACC Pennsylvania License LLC,
                              ACC of Tennessee LLC, ACC Tennessee License LLC,
                              ACC of Wausau Corporation, ACC Wausau License LLC,
                              ACC of West Virginia Corporation, ACC West
                              Virginia License LLC, ACC of Wisconsin LLC, ACC
                              Wisconsin License LLC, Alexandra Cellular
                              Corporation, American Cellular Wireless LLC, Chill
                              Cellular Corporation, Dutchess County Cellular
                              Telephone Co., Inc., PCPCS Corporation, Alton
                              Celltelco Cellular Corporation, as Subsidiary
                              Guarantors.

                                   By: /s/ BRUCE R. KNOOIHUIZEN
                                      ----------------------------------
                                      Name: Bruce R. Knooihuizen
                                      Title: Authorized Representative

<PAGE>

                                   BANK OF OKLAHOMA, N.A.,
                                   as Trustee

                                   By: /s/ TIM COOK
                                      ----------------------------------
                                      Name:  Tim Cook
                                      Title: Vice President<PAGE>
                                                                     EXHIBIT 4.2

                                                                 EXECUTION COPY

--------------------------------------------------------------------------------

                                ACC ESCROW CORP.

                              SERIES A AND SERIES B
                            10% SENIOR NOTES DUE 2011

                                   ----------

                                    INDENTURE

                           Dated as of August 8, 2003

                                   ----------

                     Bank of Oklahoma, National Association

                                     Trustee

--------------------------------------------------------------------------------

<PAGE>

                             CROSS-REFERENCE TABLE*

<Table>
<Caption>
Trust Indenture
Act Section                                                                        Indenture Section
<S>                                                                                <C>
310(a)(1)...................................................................             7.10
     (a)(2).................................................................             7.10
     (a)(3).................................................................             N.A.
     (a)(4).................................................................             N.A.
     (a)(5).................................................................             7.10
     (b)....................................................................             7.10
     (c)....................................................................             N.A.
311(a)......................................................................             7.11
     (b)....................................................................             7.11
     (c)....................................................................             N.A.
312(a)......................................................................             2.05
     (b)....................................................................            12.03
     (c)....................................................................            12.03
313(a)......................................................................             7.06
     (b)(1).................................................................              NA
     (b)(2).................................................................          7.06; 7.07
     (c)....................................................................         7.06; 12.02
     (d)....................................................................             7.06
314(a)......................................................................      4.03;12.02; 12.05
     (b)....................................................................              NA
     (c)(1).................................................................            12.04
     (c)(2).................................................................            12.04
     (c)(3).................................................................             N.A.
     (d)....................................................................              NA
     (e)....................................................................            12.05
     (f)....................................................................             N.A.
315(a)......................................................................             7.01
     (b)....................................................................          7.05,12.02
     (c)....................................................................             7.01
     (d)....................................................................             7.01
     (e)....................................................................             6.11
316(a) (last sentence)......................................................             2.09
     (a)(1)(A)..............................................................             6.05
     (a)(1)(B)..............................................................             6.04
     (a)(2).................................................................             N.A.
     (b)....................................................................             6.07
     (c)....................................................................             2.12
317(a)(1)...................................................................             6.08
     (a)(2).................................................................             6.09
     (b)....................................................................             2.04
318(a)......................................................................            12.01
     (b)....................................................................             N.A.
     (c)....................................................................            12.01
</Table>

N.A. means not applicable.
* This Cross Reference Table is not part of the Indenture.

<PAGE>

                                TABLE OF CONTENTS

<Table>
<Caption>
                                                                                                               Page
<S>                   <C>                                                                                      <C>

                                                     ARTICLE 1.
                                            DEFINITIONS AND INCORPORATION
                                                    BY REFERENCE

   Section 1.01       Definitions.................................................................................1
   Section 1.02       Other Definitions..........................................................................20
   Section 1.03       Incorporation by Reference of Trust Indenture Act..........................................20
   Section 1.04       Rules of Construction......................................................................21

                                                     ARTICLE 2.
                                                      THE NOTES

   Section 2.01       Form and Dating............................................................................21
   Section 2.02       Execution and Authentication...............................................................22
   Section 2.03       Registrar and Paying Agent.................................................................23
   Section 2.04       Paying Agent to Hold Money in Trust........................................................23
   Section 2.05       Holder Lists...............................................................................23
   Section 2.06       Transfer and Exchange......................................................................24
   Section 2.07       Replacement Notes..........................................................................35
   Section 2.08       Outstanding Notes..........................................................................36
   Section 2.09       Treasury Notes.............................................................................36
   Section 2.10       Temporary Notes............................................................................36
   Section 2.11       Cancellation...............................................................................36
   Section 2.12       Defaulted Interest.........................................................................37

                                                     ARTICLE 3.
                                              REDEMPTION AND PREPAYMENT

   Section 3.01       Notices to Trustee.........................................................................37
   Section 3.02       Selection of Notes to Be Redeemed or Purchased.............................................37
   Section 3.03       Notice of Redemption.......................................................................38
   Section 3.04       Effect of Notice of Redemption.............................................................38
   Section 3.05       Deposit of Redemption or Purchase Price....................................................39
   Section 3.06       Notes Redeemed or Purchased in Part........................................................39
   Section 3.07       Optional Redemption........................................................................39
   Section 3.08       Escrow of Proceeds; Special Mandatory Redemption...........................................40
   Section 3.09       Offer to Purchase by Application of Excess Proceeds........................................40

                                                    ARTICLE 4.
                                                     COVENANTS

   Section 4.01       Payment of Notes...........................................................................42
   Section 4.02       Maintenance of Office or Agency............................................................42
   Section 4.03       Reports....................................................................................42
   Section 4.04       Compliance Certificate.....................................................................43
   Section 4.05       Taxes......................................................................................44
   Section 4.06       Stay, Extension and Usury Laws.............................................................44
   Section 4.07       Limitation on Restricted Payments..........................................................44
   Section 4.08       Dividend and Other Payment Restrictions Affecting Subsidiaries.............................47
   Section 4.09       Incurrence of Indebtedness and Issuance of Preferred Stock.................................48
   Section 4.10       Asset Sales................................................................................51
</Table>

                                        i

<PAGE>

<Table>
<S>                   <C>                                                                                      <C>
   Section 4.11       Transactions with Affiliates...............................................................53
   Section 4.12       Liens......................................................................................54
   Section 4.13       Business Activities........................................................................54
   Section 4.14       Corporate Existence........................................................................54
   Section 4.15       Offer to Repurchase Upon Change of Control.................................................55
   Section 4.16       Designation of Restricted and Unrestricted Subsidiaries....................................56
   Section 4.17       Limitation on Issuances and Sales of Capital Stock of Wholly-Owned Subsidiaries............56
   Section 4.18       Additional Note Guarantees.................................................................56

                                                     ARTICLE 5.
                                                     SUCCESSORS

   Section 5.01       Merger, Consolidation, or Sale of Assets...................................................57
   Section 5.02       Successor Corporation Substituted..........................................................57

                                                     ARTICLE 6.
                                                DEFAULTS AND REMEDIES

   Section 6.01       Events of Default..........................................................................58
   Section 6.02       Acceleration...............................................................................60
   Section 6.03       Other Remedies.............................................................................60
   Section 6.04       Waiver of Past Defaults....................................................................60
   Section 6.05       Control by Majority........................................................................61
   Section 6.06       Limitation on Suits........................................................................61
   Section 6.07       Rights of Holders of Notes to Receive Payment..............................................61
   Section 6.08       Collection Suit by Trustee.................................................................61
   Section 6.09       Trustee May File Proofs of Claim...........................................................62
   Section 6.10       Priorities.................................................................................62
   Section 6.11       Undertaking for Costs......................................................................62

                                                     ARTICLE 7.
                                                       TRUSTEE

   Section 7.01       Duties of Trustee..........................................................................63
   Section 7.02       Rights of Trustee..........................................................................64
   Section 7.03       Individual Rights of Trustee...............................................................64
   Section 7.04       Trustee's Disclaimer.......................................................................64
   Section 7.05       Notice of Defaults.........................................................................65
   Section 7.06       Reports by Trustee to Holders of the Notes.................................................65
   Section 7.07       Compensation and Indemnity.................................................................65
   Section 7.08       Replacement of Trustee.....................................................................66
   Section 7.09       Successor Trustee by Merger, etc...........................................................67
   Section 7.10       Eligibility; Disqualification..............................................................67
   Section 7.11       Preferential Collection of Claims Against Company..........................................67

                                                     ARTICLE 8.
                                      LEGAL DEFEASANCE AND COVENANT DEFEASANCE

   Section 8.01       Option to Effect Legal Defeasance or Covenant Defeasance...................................67
   Section 8.02       Legal Defeasance and Discharge.............................................................67
   Section 8.03       Covenant Defeasance........................................................................68
   Section 8.04       Conditions to Legal or Covenant Defeasance.................................................68
   Section 8.05       Deposited Money and Government Securities to be Held in Trust; Other Miscellaneous
                      Provisions.................................................................................69
   Section 8.06       Repayment to Company.......................................................................70
   Section 8.07       Reinstatement..............................................................................70
</Table>

                                       ii
<PAGE>

<Table>
<S>                   <C>                                                                                        <C>
                                                     ARTICLE 9.
                                          AMENDMENT, SUPPLEMENT AND WAIVER

   Section 9.01       Without Consent of Holders of Notes........................................................70
   Section 9.02       With Consent of Holders of Notes...........................................................71
   Section 9.03       Compliance with Trust Indenture Act........................................................73
   Section 9.04       Revocation and Effect of Consents..........................................................73
   Section 9.05       Notation on or Exchange of Notes...........................................................73
   Section 9.06       Trustee to Sign Amendments, etc............................................................73

                                                     ARTICLE 10.
                                                   NOTE GUARANTEES

   Section 10.01      Guarantee..................................................................................73
   Section 10.02      Limitation on Guarantor Liability..........................................................74
   Section 10.03      Execution and Delivery of Note Guarantee...................................................75
   Section 10.04      Guarantors May Consolidate, etc., on Certain Terms.........................................75
   Section 10.05      Releases Following Sale of Assets..........................................................76

                                                     ARTICLE 11.
                                             SATISFACTION AND DISCHARGE

   Section 11.01      Satisfaction and Discharge.................................................................76
   Section 11.02      Application of Trust Money.................................................................77

                                                     ARTICLE 12.
                                                    MISCELLANEOUS

   Section 12.01      Trust Indenture Act Controls...............................................................77
   Section 12.02      Notices....................................................................................78
   Section 12.03      Communication by Holders of Notes with Other Holders of Notes..............................79
   Section 12.04      Certificate and Opinion as to Conditions Precedent.........................................79
   Section 12.05      Statements Required in Certificate or Opinion..............................................79
   Section 12.06      Rules by Trustee and Agents................................................................79
   Section 12.07      No Personal Liability of Directors, Officers, Employees and Stockholders...................79
   Section 12.08      Governing Law..............................................................................80
   Section 12.09      No Adverse Interpretation of Other Agreements..............................................80
   Section 12.10      Successors.................................................................................80
   Section 12.11      Severability...............................................................................80
   Section 12.12      Counterpart Originals......................................................................80
   Section 12.13      Table of Contents, Headings, etc...........................................................80

                                                      EXHIBITS

Exhibit A1        FORM OF NOTE
Exhibit A2        FORM OF REGULATION S TEMPORARY GLOBAL NOTE
Exhibit B         FORM OF CERTIFICATE OF TRANSFER
Exhibit C         FORM OF CERTIFICATE OF EXCHANGE
Exhibit D         FORM OF CERTIFICATE OF ACQUIRING INSTITUTIONAL ACCREDITED INVESTOR
Exhibit E         FORM OF NOTE GUARANTEE
Exhibit F         FORM OF SUPPLEMENTAL INDENTURE
</Table>

                                      iii
<PAGE>

         INDENTURE dated as of August 8, 2003 between ACC Escrow Corp. ("Escrow
Corp."), a Delaware corporation and Bank of Oklahoma, National Association, as
trustee (the "Trustee").

         The issuance of the notes pursuant to this Indenture is part of the
reorganization of the ownership and capital structure of American Cellular
Corporation, a Delaware corporation ("ACC"). For convenience, the following
transactions are referred to collectively herein as the "Reorganization": (i)
the offering and issuance of the notes pursuant to this Indenture, (ii) the
cancellation of indebtedness under ACC's existing bank credit facility, (iii)
the payment of an aggregate of 300 shares of ACC's Class B common stock, par
value $.01 per share (the "Class B Common Stock") and up to $50.0 million in
cash to holders of ACC's outstanding 9 1/2% Senior Subordinated Notes due 2009
(the "Existing Notes") to cancel the indebtedness represented by the Existing
Notes, (iv) the issuance by Dobson Communications Corporation, an Oklahoma
corporation and indirect parent of Escrow Corp. ("Dobson") of (a) up to an
aggregate of 45,054,800 shares of its Class A Common Stock, par value $.001 and
(b) up to 700,000 shares of its Series F Convertible Preferred Stock, par value
$.01, to holders of the Existing Notes in exchange for all of their shares of
Class B Common Stock, and (v) the payment of any fees and expenses related to
transactions in clauses (i) through (iv). As part of the consummation of the
Reorganization, Escrow Corp. will merge with and into ACC after which ACC will
be the surviving entity (the "Escrow Corp. Merger"). Upon consummation of the
Escrow Corp. Merger, ACC will assume all obligations of Escrow Corp. under this
Indenture. The word "Company" as used herein refers only to Escrow Corp. before
the Escrow Corp. Merger and to ACC after the Escrow Corp. Merger, it being
understood that for purposes of Articles 4, 5 and 6, such term means ACC as well
as Escrow Corp. No part of the Reorganization will be deemed to violate Articles
4, 5 and 6 hereof.

         The Company, the Guarantors and the Trustee agree as follows for the
benefit of each other and for the equal and ratable benefit of the Holders (as
defined) of the 10% Series A Senior Notes due 2011 (the "Series A Notes") and
the 10% Series B Senior Notes due 2011 (the "Series B Notes" and, together with
the Series A Notes, the "Notes"):

                                   ARTICLE 1.
                          DEFINITIONS AND INCORPORATION
                                  BY REFERENCE

Section 1.01 Definitions.

         "144A Global Note" means a Global Note substantially in the form of
Exhibit A hereto bearing the Global Note Legend and the Private Placement Legend
and deposited with or on behalf of, and registered in the name of, the
Depositary or its nominee that will be issued in a denomination equal to the
outstanding principal amount of the Notes sold in reliance on Rule 144A.

         "Acquired Debt" means, with respect to any specified Person:

                  (1) Indebtedness of any other Person existing at the time such
         other Person is merged with or into or became a Subsidiary of such
         specified Person, whether or not such Indebtedness is incurred in
         connection with, or in contemplation of, such other Person merging with
         or into, or becoming a Subsidiary of, such specified Person; and

                  (2) Indebtedness secured by a Lien encumbering any asset
         acquired by such specified Person.

                                       1
<PAGE>

         "Additional Notes" means additional Notes (other than the Initial
Notes) issued from time to time under this Indenture in accordance with Sections
2.02 and 4.09 hereof, as part of the same series as the Initial Notes.

         "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person. For purposes of this definition, "control,"
as used with respect to any Person, means the possession, directly or
indirectly, of the power to direct or cause the direction of the management or
policies of such Person, whether through the ownership of voting securities, by
agreement or otherwise. For purposes of this definition, the terms
"controlling," "controlled by" and "under common control with" will have
correlative meanings.

         "Agent" means any Registrar, co-registrar, Paying Agent or additional
paying agent.

         "Applicable Procedures" means, with respect to any transfer or exchange
of or for beneficial interests in any Global Note, the rules and procedures of
the Depositary, Euroclear and Clearstream that apply to such transfer or
exchange.

         "Asset Sale" means:

                  (1) the sale, lease, conveyance or other disposition of any
         assets or rights; provided that the sale, conveyance or other
         disposition of all or substantially all of the assets of the Company
         and its Restricted Subsidiaries taken as a whole will be governed by
         Section 4.15 and/or Section 5.01 and not by Section 4.10; and

                  (2) the issuance of Equity Interests in any of the Company's
         Restricted Subsidiaries or the sale of Equity Interests in any of its
         Subsidiaries.

         Notwithstanding the preceding, none of the following items will be
deemed to be an Asset Sale:

                  (1) any single transaction or series of related transactions
         that involves assets having a fair market value of less than $5.0
         million;

                  (2) a sale, transfer or other disposition of assets, including
         Capital Stock of Restricted Subsidiaries, for consideration at least
         equal to the fair market value of the assets sold or disposed of, but
         only if the consideration received consists of Capital Stock of a
         Person that becomes a Restricted Subsidiary engaged in, or property or
         assets (other than cash, except to the extent used as a bona fide means
         of equalizing the value of the property or assets involved in the swap
         transaction) of a nature or type or that are used in, a business having
         property or assets of a nature or type, or engaged in a business
         similar or related to the nature or type of the property and assets of,
         or businesses of, the Company and its Restricted Subsidiaries existing
         on the date of such sale or other disposition;

                  (3) a transfer of assets between or among the Company and its
         Restricted Subsidiaries;

                  (4) an issuance of Equity Interests by a Restricted Subsidiary
         of the Company to the Company or to a Restricted Subsidiary of the
         Company;

                  (5) the sale or lease of products, services or accounts
         receivable in the ordinary course of business and any sale or other
         disposition of damaged, worn-out or obsolete assets in the ordinary
         course of business;

                                       2
<PAGE>

                  (6) the sale or other disposition of cash or Cash Equivalents;
         and

                  (7) a Restricted Payment that does not violate Section 4.07
         hereof or a Permitted Investment.

         "Attributable Debt" in respect of a sale and leaseback transaction
means, at the time of determination, the present value of the obligation of the
lessee for net rental payments during the remaining term of the lease included
in such sale and leaseback transaction including any period for which such lease
has been extended or may, at the option of the lessor, be extended. Such present
value shall be calculated using a discount rate equal to the rate of interest
implicit in such transaction, determined in accordance with GAAP; provided,
however, that if such sale and leaseback transaction results in a Capital Lease
Obligation, the amount of Indebtedness represented thereby will be determined in
accordance with the definition of "Capital Lease Obligation."

         "Bankruptcy Law" means Title 11, U.S. Code or any similar federal or
state law for the relief of debtors.

         "Beneficial Owner" has the meaning assigned to such term in Rule 13d-3
and Rule 13d-5 under the Exchange Act, except that in calculating the beneficial
ownership of any particular "person" (as that term is used in Section 13(d)(3)
of the Exchange Act), such "person" will be deemed to have beneficial ownership
of all securities that such "person" has the right to acquire by conversion or
exercise of other securities, whether such right is currently exercisable or is
exercisable only after the passage of time. The terms "Beneficially Owns" and
"Beneficially Owned" have a corresponding meaning.

         "Board of Directors" means:

                  (1) with respect to a corporation, the board of directors of
         the corporation or any committee thereof duly authorized to act on
         behalf of such board;

                  (2) with respect to a partnership, the board of directors of
         the general partner of the partnership;

                  (3) with respect to a limited liability company, the managing
         members or members or any controlling committee of the managing members
         thereof; and

                  (4) with respect to any other Person, the board or committee
         of such Person serving a similar function.

         "Broker-Dealer" has the meaning set forth in the Registration Rights
Agreement.

         "Business Day" means any day other than a Legal Holiday.

         "Capital Expenditures" means, for any period, with respect to any
Person, the aggregate of all expenditures by such Person and its Restricted
Subsidiaries for the acquisition or leasing (pursuant to a capital lease) of
fixed or capital assets or additions to equipment (including replacements,
capitalized repairs and improvements during such period) which should be
capitalized under GAAP on a consolidated balance sheet of such Person and its
Restricted Subsidiaries.

         "Capital Lease Obligation" means, at the time any determination is to
be made, the amount of the liability in respect of a capital lease that would at
that time be required to be capitalized on a balance sheet in accordance with
GAAP, and the Stated Maturity thereof shall be the date of the last payment of
rent or

                                       3
<PAGE>

any other amount due under such lease prior to the first date upon which such
lease may be prepaid by the lessee without payment of a penalty.

         "Capital Stock" means:

                  (1) in the case of a corporation, corporate stock;

                  (2) in the case of an association or business entity, any and
         all shares, interests, participations, rights or other equivalents
         (however designated) of corporate stock;

                  (3) in the case of a partnership or limited liability company,
         partnership interests (whether general or limited) or membership
         interests; and

                  (4) any other interest or participation that confers on a
         Person the right to receive a share of the profits and losses of, or
         distributions of assets of, the issuing Person, but excluding from all
         of the foregoing any debt securities convertible into Capital Stock,
         whether or not such debt securities include any right of participation
         with Capital Stock.

         "Cash Equivalents" means:

                  (1) United States dollars;

                  (2) securities issued or directly and fully guaranteed or
         insured by the United States government or any agency or
         instrumentality of the United States government (provided that the full
         faith and credit of the United States is pledged in support of those
         securities) having maturities of not more than six months from the date
         of acquisition;

                  (3) certificates of deposit and eurodollar time deposits with
         maturities of six months or less from the date of acquisition, bankers'
         acceptances with maturities not exceeding six months and overnight bank
         deposits, in each case, with any domestic commercial bank having
         capital and surplus in excess of $500.0 million and a Thomson Bank
         Watch Rating of "B" or better;

                  (4) repurchase obligations with a term of not more than seven
         days for underlying securities of the types described in clauses (2)
         and (3) above entered into with any financial institution meeting the
         qualifications specified in clause (3) above;

                  (5) commercial paper having one of the two highest ratings
         obtainable from Moody's or S&P and in each case maturing within six
         months after the date of acquisition; and

                  (6) money market funds at least 95% of the assets of which
         constitute Cash Equivalents of the kinds described in clauses (1)
         through (5) of this definition.

         "Clearstream" means Clearstream Banking, S.A.

         "Change of Control" means the occurrence of any of the following:

                  (1) the direct or indirect sale, transfer, conveyance or other
         disposition (other than by way of merger or consolidation), in one or a
         series of related transactions, of all or substantially all of the
         properties or assets of the Company and its Subsidiaries taken as a
         whole to any "person" (as that term is used in Section 13(d) of the
         Exchange Act) other than the Permitted Holder or a Related Party of the
         Permitted Holder;

                                       4
<PAGE>

                  (2) the adoption of a plan relating to the liquidation or
         dissolution of the Company;

                  (3) the consummation of any transaction (including, without
         limitation, any merger or consolidation) the result of which is that
         any "person" (as defined above) that is not a Permitted Holder or its
         Related Parties, becomes the Beneficial Owner, directly or indirectly,
         of more than 50% of the Voting Stock of the Company, measured by voting
         power rather than number of shares; provided that no Change of Control
         will be deemed to occur pursuant to this clause (3) if the "person" is
         a corporation with outstanding debt securities having a maturity at
         original issuance of at least one year and if such debt securities are
         rated Investment Grade by S&P or Moody's for a period of at least 90
         consecutive days, beginning on the date of such event (which period
         will be extended up to 90 additional days for as long as the rating of
         such debt securities is under publicly announced consideration for
         possible downgrading by the applicable rating agency); or

                  (4) the first day on which a majority of the members of the
         Board of Directors of the Company are not Continuing Directors.

         "Consolidated Cash Flow" means, with respect to any specified Person
for any period, the Consolidated Net Income of such Person for such period plus,
without duplication:

                  (1) an amount equal to any extraordinary loss plus any net
         loss realized by such Person or any of its Restricted Subsidiaries in
         connection with an Asset Sale, to the extent such losses were deducted
         in computing such Consolidated Net Income; plus

                  (2) provision for taxes based on income or profits of such
         Person and its Restricted Subsidiaries for such period, to the extent
         that such provision for taxes was deducted in computing such
         Consolidated Net Income; plus

                  (3) the Fixed Charges of such Person and its Restricted
         Subsidiaries for such period, to the extent that such Fixed Charges
         were deducted in computing such Consolidated Net Income; plus

                  (4) depreciation, amortization (including amortization of
         intangibles but excluding amortization of prepaid cash expenses that
         were paid in a prior period) and other non-cash expenses (excluding any
         such non-cash expense to the extent that it represents an accrual of or
         reserve for cash expenses in any future period or amortization of a
         prepaid cash expense that was paid in a prior period) of such Person
         and its Restricted Subsidiaries for such period to the extent that such
         depreciation, amortization and other non-cash expenses were deducted in
         computing such Consolidated Net Income; minus

                  (5) non-cash items increasing such Consolidated Net Income for
         such period, other than the accrual of revenue in accordance with GAAP;

in each case, on a consolidated basis and determined in accordance with GAAP.

         Notwithstanding the preceding, the provision for taxes based on the
income or profits of, and the depreciation and amortization and other non-cash
expenses of, a Restricted Subsidiary of the Company will be added to
Consolidated Net Income to compute Consolidated Cash Flow of the Company only to
the extent that a corresponding amount would be permitted at the date of
determination to be dividended to the Company by such Restricted Subsidiary
without prior governmental approval (that has not been obtained), and without
direct or indirect restriction pursuant to the terms of its charter and all
agreements,

                                       5
<PAGE>

instruments, judgments, decrees, orders, statutes, rules and governmental
regulations applicable to that Restricted Subsidiary or its stockholders.

         "Consolidated Indebtedness" means, with respect to any Person as of any
date of determination, the sum, without duplication, of (i) the total amount of
Indebtedness of such Person and its Restricted Subsidiaries, plus (ii) the total
amount of Indebtedness of any other Person, to the extent that such Indebtedness
has been Guaranteed by the referent Person or one or more of its Restricted
Subsidiaries, plus (iii) the aggregate liquidation value of all Disqualified
Stock of such Person and all preferred stock of Restricted Subsidiaries of such
Person, in each case, determined on a consolidated basis in accordance with
GAAP.

         "Consolidated Interest Expense" means, with respect to any Person for
any period, the sum of (i) the consolidated interest expense of such Person and
its Restricted Subsidiaries for such period, whether paid or accrued (including,
without limitation, amortization or original issue discount, non-cash interest
payments, the interest component of any deferred payment obligations, the
interest component of all payments associated with Capital Lease Obligations,
imputed interest with respect to Attributable Debt, commissions, discounts and
other fees and charges incurred in respect of letter of credit or bankers'
acceptance financings, and net payments (if any) pursuant to Hedging
Obligations) and (ii) the consolidated interest expense of such Person and its
Restricted Subsidiaries that was capitalized during such period, and (iii) any
interest expense on Indebtedness of another Person that is guaranteed by such
Person or one of its Restricted Subsidiaries or secured by a Lien on assets of
such Person or one of its Subsidiaries (whether or not such Guarantee or Lien is
called upon) and (iv) the product of (a) all dividend payments on any series of
preferred stock of such Person or any of its Restricted Subsidiaries, times (b)
a fraction, the numerator of which is one and the denominator of which is one
minus the then current combined federal, state and local statutory tax rate of
such Person, expressed as a decimal, in each case, on a consolidated basis and
in accordance with GAAP.

         "Consolidated Net Income" means, with respect to any specified Person
for any period, the aggregate of the Net Income of such Person and its
Restricted Subsidiaries for such period, on a consolidated basis, determined in
accordance with GAAP; provided that:

                  (1) the Net Income (but not loss) of any Person that is not a
         Restricted Subsidiary or that is accounted for by the equity method of
         accounting will be included only to the extent of the amount of
         dividends or similar distributions paid in cash to the specified Person
         or a Restricted Subsidiary of the Person;

                  (2) the Net Income of any Restricted Subsidiary will be
         excluded to the extent that the declaration or payment of dividends or
         similar distributions by that Restricted Subsidiary of that Net Income
         is not at the date of determination permitted without any prior
         governmental approval (that has not been obtained) or, directly or
         indirectly, by operation of the terms of its charter or any agreement,
         instrument, judgment, decree, order, statute, rule or governmental
         regulation applicable to that Restricted Subsidiary or its
         stockholders;

                  (3) the cumulative effect of a change in accounting principles
         will be excluded; and

                  (4) notwithstanding clause (1) above, the Net Income of any
         Unrestricted Subsidiary will be excluded, except to the extent of any
         distributions thereof made in cash to the specified Person or one of
         its Restricted Subsidiaries.

         "Continuing Directors" means, as of any date of determination, any
member of the Board of Directors of the Company who:

                                       6
<PAGE>

                  (1) was a member of such Board of Directors immediately
         following date of this Indenture or consummation of the Reorganization;
         or

                  (2) was nominated for election or elected to such Board of
         Directors with the approval of a majority of the Continuing Directors
         who were members of such Board of Directors at the time of such
         nomination or election.

         "Corporate Trust Office of the Trustee" will be at the address of the
Trustee specified in Section 12.02 hereof or such other address as to which the
Trustee may give notice to the Company.

         "Credit Facilities" means one or more debt facilities or commercial
paper facilities, in each case with banks or other institutional lenders and
other financial institutions providing for revolving credit loans, term loans,
receivables financing (including through the sale of receivables to such lenders
or to special purpose entities formed to borrow from such lenders against such
receivables) or letters of credit, or one or more indentures or similar
agreements including any related bonds, notes, debentures, guarantees,
collateral documents, instruments and agreements executed in connection
therewith, in each case, as amended, restated, modified, renewed, refunded,
replaced, extended, supplemented or refinanced (including by means of sales of
debt securities to institutional investors) in whole or in part from time to
time.

         "Custodian" means the Trustee, as custodian with respect to the Notes
in global form, or any successor entity thereto.

         "Debt to Cash Flow Ratio" means, as of any date of determination, the
ratio of (a) the Consolidated Indebtedness of the Company as of such date to (b)
the Consolidated Cash Flow of the Company for the four most recent full fiscal
quarters ending immediately prior to such date for which internal financial
statements are available, determined on a pro forma basis after giving effect to
all acquisitions or dispositions of assets made by the Company and its
Restricted Subsidiaries from the beginning of such four-quarter period through
and including such date of determination (including any related financing
transactions) as if such acquisitions and dispositions had occurred at the
beginning of such four-quarter period. In addition, for purposes of making the
computation referred to above, (i) acquisitions that have been made by the
Company or any of its Restricted Subsidiaries, including through mergers or
consolidations and including any related financing transactions, during the
four-quarter reference period or subsequent to such reference period and on or
prior to the Calculation Date shall be deemed to have occurred on the first day
of the four-quarter reference period and Consolidated Cash Flow for such
reference period shall be calculated without giving effect to clause (3) of the
proviso set forth in the definition of Consolidated Net Income, and (ii) the
Consolidated Cash Flow attributable to discontinued operations, as determined in
accordance with GAAP, and operations or businesses disposed of prior to the
Calculation Date, shall be excluded.

         "Default" means any event that is, or with the passage of time or the
giving of notice or both would be, an Event of Default.

         "Definitive Note" means a certificated Note registered in the name of
the Holder thereof and issued in accordance with Section 2.06 hereof,
substantially in the form of Exhibit A1 hereto except that such Note shall not
bear the Global Note Legend and shall not have the "Schedule of Exchanges of
Interests in the Global Note" attached thereto.

         "Deposit" means the $922.5 million initially deposited with the Escrow
Agent under the Escrow Agreement, which at the time of deposit represented 100%
of the aggregate principal amount of the Initial

                                       7
<PAGE>

Notes, plus accrued and unpaid interest on the Notes, to, but not including,
November 7, 2003, as such sum may increase as a result of the investment and
reinvestment thereof.

         "Depositary" means, with respect to the Notes issuable or issued in
whole or in part in global form, the Person specified in Section 2.03 hereof as
the Depositary with respect to the Notes, and any and all successors thereto
appointed as depositary hereunder and having become such pursuant to the
applicable provision of this Indenture.

         "Disqualified Stock" means any Capital Stock that, by its terms (or by
the terms of any security into which it is convertible, or for which it is
exchangeable, in each case at the option of the holder of the Capital Stock), or
upon the happening of any event, matures or is mandatorily redeemable, pursuant
to a sinking fund obligation or otherwise, or redeemable at the option of the
holder of the Capital Stock, in whole or in part, on or prior to the date that
is 91 days after the date on which the Notes mature. Notwithstanding the
preceding sentence, any Capital Stock that would constitute Disqualified Stock
solely because the holders of the Capital Stock have the right to require the
Company to repurchase such Capital Stock upon the occurrence of a change of
control or an asset sale will not constitute Disqualified Stock if the terms of
such Capital Stock provide that the Company may not repurchase or redeem any
such Capital Stock pursuant to such provisions unless such repurchase or
redemption complies with Section 4.07 hereof. The amount of Disqualified Stock
deemed to be outstanding at any time for purposes of this Indenture will be the
maximum amount that the Company and its Restricted Subsidiaries may become
obligated to pay upon the maturity of, or pursuant to any mandatory redemption
provisions of, such Disqualified Stock, exclusive of accrued dividends.

         "Dobson" has the meaning assigned to it in the preamble to this
Indenture.

         "Domestic Subsidiary" means any Restricted Subsidiary of the Company
that was formed under the laws of the United States or any state of the United
States or the District of Columbia or that guarantees or otherwise provides
direct credit support for any Indebtedness of the Company.

         "Equipment Lease and Switch Sharing Agreements" means the three
Equipment Lease Agreements and the three Switch Sharing Agreements between
Dobson Operating Co., LLC and ACC, and the one Equipment Lease Agreement between
Sygnet Communications, Inc. and ACC, all dated as of January 1, 2003, which
provide for the leasing or sharing of certain telecommunications equipment
between the parties thereto, including any amendments or modifications thereto;
provided, however, that such amendments or modifications may not adversely
affect ACC when compared with the provisions in place immediately prior to the
time of such amendment.

         "Equity Interests" means Capital Stock and all warrants, options or
other rights to acquire Capital Stock (but excluding any debt security that is
convertible into, or exchangeable for, Capital Stock).

         "Equity Offerings" means one or more public or private offerings of
Equity Interests (other than Disqualified Stock) of the Company or cash capital
contributions received by the Company in respect of such Equity Interests.

         "Escrow Agent" means Bank of Oklahoma, National Association.

         "Escrow Agreement" means the Escrow Agreement, dated as of August 8,
2003, by and among Escrow Corp., the Trustee and the Escrow Agent.

         "Escrow Corp. Merger" has the meaning assigned to it in the preamble to
this Indenture.

                                       8
<PAGE>

         "Euroclear" means Euroclear Bank S.A./N.V., as operator of the
Euroclear system.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended.

         "Exchange Notes" means the Notes issued in the Exchange Offer pursuant
to Section 2.06(f) hereof.

         "Exchange Offer" has the meaning set forth in the Registration Rights
Agreement.

         "Exchange Offer Registration Statement" has the meaning set forth in
the Registration Rights Agreement.

         "Existing Indebtedness" means up to $35.0 million in aggregate
principal amount of Indebtedness of the Company and its Restricted Subsidiaries
in existence on the date of the Reorganization, including the unpaid principal
amount, if any, of ACC's outstanding 9 1/2% Senior Subordinated Notes due 2009
remaining outstanding upon consummation of the Reorganization.

         "Fair Market Value" means the value that would be paid by a willing
buyer to an unaffiliated willing seller in a transaction not involving distress
or necessity of either party, determined in good faith by the Board of Directors
of the Company (unless otherwise provided in this Indenture).

         "Fixed Charges" means, with respect to any specified Person for any
period, the sum, without duplication, of:

                  (1) the consolidated interest expense of such Person and its
         Restricted Subsidiaries for such period, whether paid or accrued,
         including, without limitation, amortization of debt issuance costs and
         original issue discount, non-cash interest payments, the interest
         component of any deferred payment obligations, the interest component
         of all payments associated with Capital Lease Obligations, commissions,
         discounts and other fees and charges incurred in respect of letter of
         credit or bankers' acceptance financings, and net of the effect of all
         payments made or received pursuant to Hedging Obligations in respect of
         interest rates; plus

                  (2) the consolidated interest of such Person and its
         Restricted Subsidiaries that was capitalized during such period; plus

                  (3) any interest accruing on Indebtedness of another Person
         that is Guaranteed by such Person or one of its Restricted Subsidiaries
         or secured by a Lien on assets of such Person or one of its Restricted
         Subsidiaries, whether or not such Guarantee or Lien is called upon;
         plus

                  (4) the product of (a) all dividends, whether paid or accrued
         and whether or not in cash, on any series of preferred stock of such
         Person or any of its Restricted Subsidiaries, other than dividends on
         Equity Interests payable solely in Equity Interests of the Company
         (other than Disqualified Stock) or to the Company or a Restricted
         Subsidiary of the Company, times (b) a fraction, the numerator of which
         is one and the denominator of which is one minus the then current
         combined federal, state and local statutory tax rate of such Person,
         expressed as a decimal, in each case, on a consolidated basis and in
         accordance with GAAP.

         "GAAP" means generally accepted accounting principles set forth in the
opinions and pronouncements of the Accounting Principles Board of the American
Institute of Certified Public Accountants and statements and pronouncements of
the Financial Accounting Standards Board or in such

                                       9
<PAGE>

other statements by such other entity as have been approved by the SEC or a
significant segment of the accounting profession, which are in effect from time
to time.

         "Global Notes" means, individually and collectively, each of the
Restricted Global Notes and the Unrestricted Global Notes, substantially in the
form of Exhibit A hereto issued in accordance with Section 2.01, 2.06(b)(3),
2.06(b)(4), 2.06(d)(2) or 2.06(f) hereof.

         "Global Note Legend" means the legend set forth in Section 2.06(g)(2),
which is required to be placed on all Global Notes issued under this Indenture.

         "Government Securities" means direct obligations of, or obligations
guaranteed by, the United States of America, and the payment for which the
United States pledges its full faith and credit.

         "Guarantee" means a guarantee other than by endorsement of negotiable
instruments for collection in the ordinary course of business, direct or
indirect, in any manner including, without limitation, by way of a pledge of
assets or through letters of credit or reimbursement agreements in respect
thereof, of all or any part of any Indebtedness (whether arising by virtue of
partnership arrangements, or by agreements to keep-well, to purchase assets,
goods, securities or services, to take or pay or to maintain financial statement
conditions or otherwise).

         "Guarantors" means each subsidiary that executes a Note Guarantee in
accordance with the provisions of this Indenture and their respective successors
and assigns.

         "Hedging Obligations" means, with respect to any specified Person, the
obligations of such Person under:

                  (1) interest rate swap agreements (whether from fixed to
         floating or from floating to fixed), interest rate cap agreements and
         interest rate collar agreements;

                  (2) other agreements or arrangements designed to manage
         interest rates or interest rate risk; and

                  (3) other agreements or arrangements designed to protect such
         Person against fluctuations in currency exchange rates or commodity
         prices.

         "Holder" means a Person in whose name a Note is registered.

         "IAI Global Note" means a Global Note substantially in the form of
Exhibit A1 hereto bearing the Global Note Legend and the Private Placement
Legend and deposited with or on behalf of and registered in the name of the
Depositary or its nominee that will be issued in a denomination equal to the
outstanding principal amount of the Notes sold to Institutional Accredited
Investors.

         "Indebtedness" means, with respect to any specified Person, any
outstanding indebtedness of such Person (excluding accrued expenses and trade
payables), whether or not contingent:

                  (1) in respect of borrowed money;

                  (2) evidenced by bonds, notes, debentures or similar
         instruments or letters of credit (or reimbursement agreements in
         respect thereof);

                  (3) in respect of banker's acceptances;

                                       10
<PAGE>

                  (4) representing Capital Lease Obligations;

                  (5) representing the balance deferred and unpaid of the
         purchase price of any property or services due more than six months
         after such property is acquired or such services are completed; or

                  (6) representing any Hedging Obligations,

if and to the extent any of the preceding items (other than letters of credit,
Attributable Debt and Hedging Obligations) would appear as a liability upon a
balance sheet of the specified Person prepared in accordance with GAAP. In
addition, the term "Indebtedness" includes all Indebtedness of others secured by
a Lien on any asset of the specified Person (whether or not such Indebtedness is
assumed by the specified Person) and, to the extent not otherwise included, the
Guarantee by the specified Person of any Indebtedness of any other Person.

         "Indenture" means this Indenture, as amended or supplemented from time
to time.

         "Indirect Participant" means a Person who holds a beneficial interest
in a Global Note through a Participant.

         "Initial Notes" means the first $900.0 million aggregate principal
amount of Notes issued under this Indenture on the date hereof.

         "Initial Purchasers" means Bear, Stearns & Co Inc. and Morgan Stanley
and Co. Incorporated.

         "Institutional Accredited Investor" means an institution that is an
"accredited investor" as defined in Rule 501(a)(1), (2), (3) or (7) under the
Securities Act, who are not also QIBs.

         "Investment Grade" means a rating of at least BBB--, in the case of
S&P, or Baa3, in the case of Moody's.

         "Investments" means, with respect to any Person, all direct or indirect
investments by such Person in other Persons (including Affiliates) in the forms
of loans (including Guarantees or other obligations), advances or capital
contributions (excluding commission, travel and similar advances to officers and
employees made in the ordinary course of business), purchases or other
acquisitions for consideration of Indebtedness, Equity Interests or other
securities, together with all items that are or would be classified as
investments on a balance sheet prepared in accordance with GAAP. If the Company
or any Subsidiary of the Company sells or otherwise disposes of any Equity
Interests of any direct or indirect Subsidiary of the Company such that, after
giving effect to any such sale or disposition, such Person is no longer a
Subsidiary of the Company, the Company will be deemed to have made an Investment
on the date of any such sale or disposition equal to the Fair Market Value of
the Company's Investments in such Equity Interests in such Subsidiary that were
not sold or disposed of in an amount determined as provided in the final
paragraph of Section 4.07 hereof. The acquisition by the Company or any
Subsidiary of the Company of a Person that holds an Investment in a third Person
will be deemed to be an Investment by the Company or such Subsidiary in such
third Person in an amount equal to the Fair Market Value of the Investments held
by the acquired Person in such third Person in an amount determined as provided
in the final paragraph of Section 4.07 hereof. Except as otherwise provided in
this Indenture, the amount of an Investment will be determined at the time the
Investment is made and without giving effect to subsequent changes in value.

                                       11
<PAGE>

         "Legal Holiday" means a Saturday, a Sunday or a day on which banking
institutions in the City of New York or at a place of payment are authorized by
law, regulation or executive order to remain closed. If a payment date is a
Legal Holiday at a place of payment, payment may be made at that place on the
next succeeding day that is not a Legal Holiday, and no interest shall accrue on
such payment for the intervening period.

         "Letter of Transmittal" means the letter of transmittal to be prepared
by the Company and sent to all Holders of the Notes for use by such Holders in
connection with the Exchange Offer.

         "Lien" means, with respect to any asset, any mortgage, lien, pledge,
charge, security interest or encumbrance of any kind in respect of such asset,
whether or not filed, recorded or otherwise perfected under applicable law,
including any conditional sale or other title retention agreement, any lease in
the nature thereof, any option or other agreement to sell or give a security
interest in and any filing of or agreement to give any financing statement under
the Uniform Commercial Code (or equivalent statutes) of any jurisdiction.

         "Liquidated Damages" means all Liquidated Damages then owing pursuant
to the Registration Rights Agreement.

         "Management Agreement" means the Amended and Restated Management
Agreement between Dobson Cellular Systems, Inc. and ACC Acquisition LLC, dated
as of February 25, 2000, together with any amendments or changes thereto made in
connection with the Reorganization to provide for substantially similar terms,
duties, responsibilities and compensation and to reflect that AT&T Wireless will
no longer be an owner of ACC.

         "Moody's" means Moody's Investors Service, Inc.

         "Net Income" means, with respect to any specified Person, the net
income (loss) of such Person, determined in accordance with GAAP and before any
reduction in respect of preferred stock dividends, excluding, however:

                  (1) any gain (but not loss), together with any related
         provision for taxes on such gain (but not loss), realized in connection
         with: (a) any Asset Sale; or (b) the disposition of any securities by
         such Person or any of its Restricted Subsidiaries and

                  (2) any extraordinary gain (but not loss), together with any
         related provision for taxes on such extraordinary gain (but not loss).

         "Net Proceeds" means the aggregate cash proceeds received by the
Company or any of its Restricted Subsidiaries in respect of any Asset Sale
(including, without limitation, any cash received upon the sale or other
disposition of any non-cash consideration received in any Asset Sale), net of
the direct costs relating to such Asset Sale, including, without limitation,
legal, accounting and investment banking fees, and sales commissions, and any
relocation expenses incurred as a result of the Asset Sale, taxes paid or
payable as a result of the Asset Sale, in each case, after taking into account
any available tax credits or deductions and any tax sharing arrangements, and
amounts required to be applied to the repayment of Indebtedness, other than
Indebtedness under a Credit Facility, secured by a Lien on the asset or assets
that were the subject of such Asset Sale and any reserve for adjustment in
respect of the sale price of such asset or assets established in accordance with
GAAP.

         "Non-Recourse Debt" means Indebtedness:

                                       12
<PAGE>

                  (1) as to which neither the Company nor any of its Restricted
         Subsidiaries (a) provides credit support of any kind (including any
         undertaking, agreement or instrument that would constitute
         Indebtedness), (b) is directly or indirectly liable as a guarantor or
         otherwise, or (c) constitutes the lender;

                  (2) no default with respect to which (including any rights
         that the holders of the Indebtedness may have to take enforcement
         action against an Unrestricted Subsidiary) would permit upon notice,
         lapse of time or both any holder of any other Indebtedness of the
         Company or any of its Restricted Subsidiaries to declare a default on
         such other Indebtedness or cause the payment of the Indebtedness to be
         accelerated or payable prior to its Stated Maturity; and

                  (3) as to which the lenders have been notified in writing that
         they will not have any recourse to the stock or assets of the Company
         or any of its Restricted Subsidiaries.

         "Non-U.S. Person" means a Person who is not a U.S. Person.

         "Note Guarantee" means the Guarantee by each Guarantor of the Company's
payment obligations under this Indenture and on the Notes, executed pursuant to
the provisions of this Indenture.

         "Notes" has the meaning assigned to it in the preamble to this
Indenture. The Initial Notes and the Additional Notes shall be treated as a
single class for all purposes under this Indenture, and unless the context
otherwise requires, all references to the Notes shall include the Initial Notes
and any Additional Notes.

         "Obligations" means any principal, interest, penalties, fees,
indemnifications, reimbursements, damages and other liabilities payable under
the documentation governing any Indebtedness.

         "Officer" means, with respect to any Person, the Chairman of the Board,
the Chief Executive Officer, the President, the Chief Operating Officer, the
Chief Financial Officer, the Treasurer, any Assistant Treasurer, the Controller,
the Secretary or any Vice-President of such Person.

         "Officers' Certificate" means a certificate signed on behalf of the
Company by two Officers of the Company, one of whom must be the principal
executive officer, the principal financial officer, the treasurer or the
principal accounting officer of the Company, that meets the requirements of
Section 12.05 hereof.

         "Opinion of Counsel" means an opinion from legal counsel who is
reasonably acceptable to the Trustee, that meets the requirements of Section
12.05 hereof. The counsel may be an employee of or counsel to the Company, any
Subsidiary of the Company or the Trustee.

         "Participant" means, with respect to the Depositary, Euroclear or
Clearstream, a Person who has an account with the Depositary, Euroclear or
Clearstream, respectively (and, with respect to DTC, shall include Euroclear and
Clearstream).

         "Permitted Business" means (1) the delivery or distribution of
telecommunications, voice, data, internet or video services and (2) any business
or activity reasonably related or ancillary thereto, including, without
limitation, any business conducted by Dobson or ACC on the date of this
Indenture and the acquisition, holding or exploitation of any license relating
to the delivery of the services described in clause (1) of this definition.

                                       13
<PAGE>

         "Permitted Holder" means Dobson Communications Corporation and its
Subsidiaries, Dobson CC Limited Partnership and/or Everett R. Dobson.

         "Permitted Investments" means:

                  (1) any Investment in the Company or in a 75% owned Restricted
         Subsidiary of the Company;

                  (2) any Investment in Cash Equivalents;

                  (3) any Investment by the Company or any Restricted Subsidiary
         of the Company in a Person, if as a result of such Investment:

                              (a) such Person becomes a Restricted Subsidiary of
         the Company and a Guarantor; or

                              (b) such Person is merged, consolidated or
         amalgamated with or into, or transfers or conveys substantially all of
         its assets to, or is liquidated into, the Company or a Restricted
         Subsidiary of the Company;

                  (4) any Investment made as a result of the receipt of non-cash
         consideration from an Asset Sale that was made pursuant to and in
         compliance with Section 4.10 hereof.

                  (5) any acquisition of assets or Capital Stock to the extent
         made in exchange for the issuance of Equity Interests (other than
         Disqualified Stock) of the Company;

                  (6) any Investments received in compromise or resolution of
         (A) obligations of trade creditors or customers that were incurred in
         the ordinary course of business of the Company or any of its Restricted
         Subsidiaries, including pursuant to any plan of reorganization or
         similar arrangement upon the bankruptcy or insolvency of any trade
         creditor or customer; or (B) litigation, arbitration or other disputes
         with Persons who are not Affiliates;

                  (7) Investments represented by Hedging Obligations;

                  (8) loans or advances to employees made in the ordinary course
         of business of the Company or a Restricted Subsidiary of the Company in
         an aggregate principal amount not to exceed $3.0 million at any one
         time outstanding;

                  (9) repurchases of the Notes; and

                  (10) other Investments in any Person other than an Affiliate
         of the Company having an aggregate Fair Market Value (measured on the
         date each such Investment was made and without giving effect to
         subsequent changes in value), when taken together with all other
         Investments made pursuant to this clause (10) that are at the time
         outstanding not to exceed $5.0 million.

         "Permitted Liens" means:

                  (1) Liens on assets of the Company or any Guarantor or any of
         its Restricted Subsidiaries securing Indebtedness and other Obligations
         under Credit Facilities that was incurred pursuant to either clause (1)
         or clause (12) of the definition of Permitted Debt and/or securing
         Hedging Obligations related thereto;

                                       14
<PAGE>

                  (2) Liens in favor of the Company or the Guarantors;

                  (3) Liens on property of a Person existing at the time such
         Person is merged with or into or consolidated with the Company or any
         Subsidiary of the Company; provided that such Liens were in existence
         prior to the contemplation of such merger or consolidation and do not
         extend to any assets other than those of the Person merged into or
         consolidated with the Company or the Subsidiary;

                  (4) Liens on property (including Capital Stock) existing at
         the time of acquisition of the property by the Company or any
         Subsidiary of the Company, provided that such Liens were in existence
         prior to, such acquisition, and not incurred in contemplation of, such
         acquisition;

                  (5) Liens to secure the performance of statutory obligations,
         surety or appeal bonds, performance bonds or other obligations of a
         like nature incurred in the ordinary course of business;

                  (6) Liens to secure Indebtedness (including Capital Lease
         Obligations) permitted by clause (4) of the second paragraph of Section
         4.09 hereof covering only the assets acquired with or financed by such
         Indebtedness;

                  (7) Liens existing on the date of this Indenture;

                  (8) Liens for taxes, assessments or governmental charges or
         claims that are not yet delinquent or that are being contested in good
         faith by appropriate proceedings promptly instituted and diligently
         concluded, provided that any reserve or other appropriate provision as
         is required in conformity with GAAP has been made therefor;

                  (9) Liens imposed by law, such as carriers', warehousemen's,
         landlord's and mechanics' Liens, in each case, incurred in the ordinary
         course of business;

                  (10) survey exceptions, easements or reservations of, or
         rights of others for, licenses, rights-of-way, sewers, electric lines,
         telegraph and telephone lines and other similar purposes, or zoning or
         other restrictions as to the use of real property that were not
         incurred in connection with Indebtedness and that do not in the
         aggregate materially adversely affect the value of said properties or
         materially impair their use in the operation of the business of such
         Person;

                  (11) Liens created for the benefit of (or to secure) the Notes
         (or Guarantees of the Notes);

                  (12) Liens to secure any Permitted Refinancing Indebtedness
         permitted to be incurred under this Indenture; provided, however, that:

                              (a) the new Lien shall be limited to all or
         part of the same property and assets that secured or, under the written
         agreements pursuant to which the original Lien arose, could secure the
         original Lien (plus improvements and accessions to, such property or
         proceeds or distributions thereof); and

                              (b) the Indebtedness secured by the new Lien
         is not increased to any amount greater than the sum of (x) the
         outstanding principal amount or, if greater, committed amount, of the
         Permitted Referencing Indebtedness and (y) an amount necessary to pay
         any fees and expenses, including premiums, related to such
         refinancings, refunding, extension, renewal or replacement;

                                       15
<PAGE>

                  (13) Liens on property of ACC existing at the time Escrow
         Corp. merges with ACC, except for Liens created or otherwise incurred
         to secure any of ACC's outstanding 9 1/2% Senior Subordinated Notes due
         2009; and

                  (14) Liens incurred in the ordinary course of business of the
         Company or any Restricted Subsidiary of the Company with respect to
         obligations that do not exceed $5.0 million at any one time
         outstanding.

         "Permitted Refinancing Indebtedness" means any Indebtedness of the
Company or any of its Restricted Subsidiaries issued in exchange for, or the net
proceeds of which are used to refund, refinance, replace, defease or discharge
other Indebtedness of the Company or any of its Restricted Subsidiaries (other
than intercompany Indebtedness); provided that:

                  (1) the principal amount (or accreted value, if applicable) of
         such Permitted Refinancing Indebtedness does not exceed the principal
         amount (or accreted value, if applicable) of the Indebtedness extended,
         refinanced, renewed, replaced, defeased or refunded (plus all accrued
         interest on the Indebtedness and the amount of all expenses and
         premiums incurred in connection therewith);

                  (2) such Permitted Refinancing Indebtedness has a final
         maturity date later than the final maturity date of, and has a Weighted
         Average Life to Maturity equal to or greater than the Weighted Average
         Life to Maturity of, the Indebtedness being extended, refinanced,
         renewed, replaced, defeased or refunded;

                  (3) if the Indebtedness being extended, refinanced, renewed,
         replaced, defeased or refunded is subordinated in right of payment to
         the Notes, such Permitted Refinancing Indebtedness has a final maturity
         date later than the final maturity date of, and is subordinated in
         right of payment to, the Notes on terms at least as favorable to the
         Holders of Notes as those contained in the documentation governing the
         Indebtedness being extended, refinanced, renewed, replaced, defeased or
         refunded; and

                  (4) such Indebtedness is incurred either by the Company or by
         the Restricted Subsidiary who is the obligor on the Indebtedness being
         extended, refinanced, renewed, replaced, defeased or refunded or any
         other Restricted Subsidiary that is a Guarantor.

         "Person" means any individual, corporation, partnership, joint venture,
association, joint-stock company, trust, unincorporated organization, limited
liability company or government or other entity.

         "Private Placement Legend" means the legend set forth in Section
2.06(g)(1) to be placed on all Notes issued under this Indenture except where
otherwise permitted by the provisions of this Indenture.

         "QIB" means a "qualified institutional buyer" as defined in Rule 144A.

         "Registration Rights Agreement" means the Registration Rights
Agreement, dated as of August 8, 2003, among ACC, Escrow Corp., the Guarantors
and the other parties named on the signature pages thereof, as such agreement
may be amended, modified or supplemented from time to time and, with respect to
any Additional Notes, one or more registration rights agreements among the
Company, the Guarantors and the other parties thereto, as such agreement(s) may
be amended, modified or supplemented from time to time, relating to rights given
by the Company to the purchasers of Additional Notes to register such Additional
Notes under the Securities Act.

                                       16
<PAGE>

         "Regulation S" means Regulation S promulgated under the Securities Act.

         "Regulation S Global Note" means a Regulation S Temporary Global Note
or Regulation S Permanent Global Note, as appropriate.

         "Regulation S Permanent Global Note" means a permanent Global Note in
the form of Exhibit A1 hereto bearing the Global Note Legend and the Private
Placement Legend and deposited with or on behalf of and registered in the name
of the Depositary or its nominee, issued in a denomination equal to the
outstanding principal amount of the Regulation S Temporary Global Note upon
expiration of the Restricted Period.

         "Regulation S Temporary Global Note" means a temporary Global Note in
the form of Exhibit A2 hereto deposited with or on behalf of and registered in
the name of the Depositary or its nominee, issued in a denomination equal to the
outstanding principal amount of the Notes initially sold in reliance on Rule 903
of Regulation S.

         "Related Party" means:

                  (1) any immediate family member of a Permitted Holder; or

                  (2) any trust, corporation, partnership or other entity, the
         beneficiaries, stockholders, partners, owners or Persons beneficially
         holding an 80% or more controlling interest of which consists of a
         Permitted Holder and/or such other Persons referred to in the
         immediately preceding clause (1).

         "Reorganization" has the meaning assigned to it in the preamble to this
Indenture.

         "Responsible Officer" when used with respect to the Trustee, means any
officer within the Corporate Trust Administration of the Trustee (or any
successor group of the Trustee) or any other officer of the Trustee customarily
performing functions similar to those performed by any of the above designated
officers and also means, with respect to a particular corporate trust matter,
any other officer to whom such matter is referred because of his knowledge of
and familiarity with the particular subject.

         "Restricted Definitive Note" means a Definitive Note bearing the
Private Placement Legend.

         "Restricted Global Note" means a Global Note bearing the Private
Placement Legend.

         "Restricted Investment" means an Investment other than a Permitted
Investment.

         "Restricted Period" means the 40-day distribution compliance period as
defined in Regulation S.

         "Restricted Subsidiary" of a Person means any Subsidiary of the
referent Person that is not an Unrestricted Subsidiary.

         "Rule 144" means Rule 144 promulgated under the Securities Act.

         "Rule 144A" means Rule 144A promulgated under the Securities Act.

         "Rule 903" means Rule 903 promulgated under the Securities Act.

         "Rule 904" means Rule 904 promulgated the Securities Act.

                                       17
<PAGE>

         "S&P" means Standard & Poor's Ratings Group.

         "SEC" means the Securities and Exchange Commission.

         "Securities Act" means the Securities Act of 1933, as amended.

         "Shelf Registration Statement" means the Shelf Registration Statement
as defined in the Registration Rights Agreement.

         "Significant Subsidiary" means any Subsidiary that would be a
"significant subsidiary" as defined in Article 1, Rule 1-02 of Regulation S-X,
promulgated pursuant to the Securities Act, as such Regulation is in effect on
the date of this Indenture and as amended from time to time.

         "Stated Maturity" means, with respect to any installment of interest or
principal on any series of Indebtedness, the date on which the payment of
interest or principal was scheduled to be paid in the documentation governing
such Indebtedness as of the date of this Indenture, and will not include any
contingent obligations to repay, redeem or repurchase any such interest or
principal prior to the date originally scheduled for the payment thereof.

         "Subsidiary" means, with respect to any specified Person:

                  (1) any corporation, association or other business entity of
         which more than 50% of the total voting power of shares of Capital
         Stock entitled (without regard to the occurrence of any contingency and
         after giving effect to any voting agreement or stockholders' agreement
         that effectively transfers voting power) to vote in the election of
         directors, managers or trustees of the corporation, association or
         other business entity is at the time owned or controlled, directly or
         indirectly, by that Person or one or more of the other Subsidiaries of
         that Person (or a combination thereof); and

                  (2) any partnership (a) the sole general partner or the
         managing general partner of which is such Person or a Subsidiary of
         such Person or (b) the only general partners of which are that Person
         or one or more Subsidiaries of that Person (or any combination
         thereof).

         "TIA" means the Trust Indenture Act of 1939 (15 U.S.C. Sections
77aaa-77bbbb) as in effect on the date on which this Indenture is qualified
under the TIA.

         "Tax-Sharing Agreement" means for so long as Escrow Corp. (or any
successor, including by way of merger with ACC, if applicable) is a member of a
group filing a consolidated or combined tax return with Dobson, the agreement,
as amended, restated, modified, renewed or replaced in whole or in part from
time to time, governing payments to Dobson provided that the amount of such
payments shall equal the amount of the relevant tax (including any penalties and
interest) that the Company (or such successor) would owe if the Company (or such
successor) were filing a separate tax return (or a separate consolidated or
combined return with its Subsidiaries that are members of its consolidated or
combined group), taking into account any carryovers of tax attributes (such as
net operating losses) of the Company (or such successor) and such Subsidiaries
from other taxable years.

         "Trustee" means the party named as such in the preamble to this
Indenture until a successor replaces it in accordance with the applicable
provisions of this Indenture and thereafter means the successor serving
hereunder.

                                       18
<PAGE>

         "Unrestricted Global Note" means a permanent global Note substantially
in the form of Exhibit A1 attached hereto that bears the Global Note Legend and
that has the "Schedule of Exchanges of Interests in the Global Note" attached
thereto, and that is deposited with or on behalf of and registered in the name
of the Depositary, representing a series of Notes that do not bear the Private
Placement Legend.

         "Unrestricted Definitive Note" means one or more Definitive Notes that
do not bear and are not required to bear the Private Placement Legend.

         "Unrestricted Subsidiary" means any Subsidiary of the Company that is
designated by the Board of Directors as an Unrestricted Subsidiary pursuant to a
Board Resolution, but only to the extent that such Subsidiary:

                  (1) has no Indebtedness other than Non-Recourse Debt;

                  (2) except as permitted by Section 4.11 hereof, is not party
         to any agreement, contract, arrangement or understanding with the
         Company or any Restricted Subsidiary of the Company unless the terms of
         any such agreement, contract, arrangement or understanding are no less
         favorable to the Company or such Restricted Subsidiary than those that
         might be obtained at the time from Persons who are not Affiliates of
         the Company;

                  (3) is a Person with respect to which neither the Company nor
         any of its Restricted Subsidiaries has any direct or indirect
         obligation (a) to subscribe for additional Equity Interests or (b) to
         maintain or preserve such Person's financial condition or to cause such
         Person to achieve any specified levels of operating results; and

                  (4) has not guaranteed or otherwise directly or indirectly
         provided credit support for any Indebtedness of the Company or any of
         its Restricted Subsidiaries.

         Any designation of a Subsidiary of the Company as an Unrestricted
Subsidiary will be evidenced to the Trustee by filing with the Trustee a
certified copy of the Board Resolution giving effect to such designation and an
officers' certificate certifying that such designation complied with the
preceding conditions and was permitted by Section 4.07 hereof. If, at any time,
any Unrestricted Subsidiary would fail to meet the preceding requirements as an
Unrestricted Subsidiary, it will thereafter cease to be an Unrestricted
Subsidiary for purposes of this Indenture and any Indebtedness of such
Subsidiary will be deemed to be incurred by a Restricted Subsidiary of the
Company as of such date and, if such Indebtedness is not permitted to be
incurred as of such date under Section 4.09 hereof, the Company will be in
default of such covenant. The Board of Directors of the Company may at any time
designate any Unrestricted Subsidiary to be a Restricted Subsidiary; provided
that such designation will be deemed to be an incurrence of Indebtedness by a
Restricted Subsidiary of the Company of any outstanding Indebtedness of such
Unrestricted Subsidiary and such designation will only be permitted if (1) such
Indebtedness is permitted under Section 4.09 hereof, calculated on a pro forma
basis as if such designation had occurred at the beginning of the four-quarter
reference period; (2) no Default or Event of Default would be in existence
following such designation and (3) if such Restricted Subsidiary is a Domestic
Subsidiary, it issues the Guarantee of the Notes as required by this Indenture.

         "U.S. Person" means a U.S. Person as defined in Rule 902(o) under the
Securities Act.

         "Voting Stock" of any Person as of any date means the Capital Stock of
such Person that is at the time entitled to vote generally in the election of
the Board of Directors of such Person.

                                       19
<PAGE>

         "Weighted Average Life to Maturity" means, when applied to any
Indebtedness at any date, the number of years obtained by dividing:

                  (1) the sum of the products obtained by multiplying (a) the
         amount of each then remaining installment, sinking fund, serial
         maturity or other required payments of principal, including payment at
         final maturity, in respect of the Indebtedness, by (b) the number of
         years (calculated to the nearest one-twelfth) that will elapse between
         such date and the making of such payment; by

                  (2) the then outstanding principal amount of such
         Indebtedness.

         "Wholly-Owned Restricted Subsidiary" of any specified Person means a
Subsidiary of such Person all of the outstanding Capital Stock or other
ownership interests of which (other than directors' qualifying shares) will at
the time be owned by such Person or by one or more Wholly-Owned Restricted
Subsidiaries of such Person and one or more Wholly-Owned Restricted Subsidiaries
of such Person.

Section 1.02 Other Definitions.

<Table>
<Caption>
                                                                                                Defined in
        Term                                                                                      Section
        ----                                                                                    ----------
<S>                                                                                             <C>
        "Affiliate Transaction".............................................................       4.11
        "Asset Sale Offer"..................................................................       3.09
        "Authentication Order"..............................................................       2.02
        "Change of Control Offer"...........................................................       4.15
        "Change of Control Payment".........................................................       4.15
        "Change of Control Payment Date"....................................................       4.15
        "Covenant Defeasance"...............................................................       8.03
        "DTC"...............................................................................       2.03
        "Event of Default"..................................................................       6.01
        "Excess Proceeds"...................................................................       4.10
        "incur".............................................................................       4.09
        "Legal Defeasance"..................................................................       8.02
        "Offer Amount"......................................................................       3.09
        "Offer Period"......................................................................       3.09
        "Paying Agent"......................................................................       2.03
        "Permitted Debt"....................................................................       4.09
        "Purchase Date".....................................................................       3.09
        "Registrar".........................................................................       2.03
        "Restricted Payments"...............................................................       4.07
        "Special Mandatory Redemption Date".................................................       3.08
</Table>

Section 1.03 Incorporation by Reference of Trust Indenture Act.

         Whenever this Indenture refers to a provision of the TIA, the provision
is incorporated by reference in and made a part of this Indenture.

         The following TIA terms used in this Indenture have the following
meanings:

         "indenture securities" means the Notes;

                                       20
<PAGE>

         "indenture security Holder" means a Holder of a Note;

         "indenture to be qualified" means this Indenture;

         "indenture trustee" or "institutional trustee" means the Trustee; and

         "obligor" on the Notes and the Note Guarantees means the Company and
the Guarantors, respectively, and any successor obligor upon the Notes and the
Note Guarantees, respectively.

         All other terms used in this Indenture that are defined by the TIA,
defined by TIA reference to another statute or defined by SEC rule under the TIA
have the meanings so assigned to them.

Section 1.04      Rules of Construction.

         Unless the context otherwise requires:

                  (1) a term has the meaning assigned to it;

                  (2) an accounting term not otherwise defined has the meaning
         assigned to it in accordance with GAAP;

                  (3) "or" is not exclusive;

                  (4) words in the singular include the plural, and in the
         plural include the singular;

                  (5) "will" shall be interpreted to express a command;

                  (6) provisions apply to successive events and transactions;
         and

                  (7) references to sections of or rules under the Securities
         Act will be deemed to include substitute, replacement of successor
         sections or rules adopted by the SEC from time to time.

                                   ARTICLE 2.
                                    THE NOTES

Section 2.01 Form and Dating.

         (a) General. The Notes and the Trustee's certificate of authentication
will be substantially in the form of Exhibit A hereto. The Notes may have
notations, legends or endorsements required by law, stock exchange rule or
usage. Each Note will be dated the date of its authentication. The Notes shall
be in denominations of $1,000 and integral multiples thereof.

         The terms and provisions contained in the Notes will constitute, and
are hereby expressly made, a part of this Indenture and the Company, the
Guarantors and the Trustee, by their execution and delivery of this Indenture,
expressly agree to such terms and provisions and to be bound thereby. However,
to the extent any provision of any Note conflicts with the express provisions of
this Indenture, the provisions of this Indenture shall govern and be
controlling.

         (b) Global Notes. Notes issued in global form will be substantially in
the form of Exhibits A1 or A2 attached hereto (including the Global Note Legend
thereon and the "Schedule of Exchanges of Interests in the Global Note" attached
thereto). Notes issued in definitive form will be substantially in the

                                       21
<PAGE>

form of Exhibit A1 attached hereto (but without the Global Note Legend thereon
and without the "Schedule of Exchanges of Interests in the Global Note" attached
thereto). Each Global Note will represent such of the outstanding Notes as will
be specified therein and each shall provide that it represents the aggregate
principal amount of outstanding Notes from time to time endorsed thereon and
that the aggregate principal amount of outstanding Notes represented thereby may
from time to time be reduced or increased, as appropriate, to reflect exchanges
and redemptions. Any endorsement of a Global Note to reflect the amount of any
increase or decrease in the aggregate principal amount of outstanding Notes
represented thereby will be made by the Trustee or the Custodian, at the
direction of the Trustee, in accordance with instructions given by the Holder
thereof as required by Section 2.06 hereof.

         (c) Temporary Global Notes. Notes offered and sold in reliance on
Regulation S will be issued initially in the form of the Regulation S Temporary
Global Note, which will be deposited on behalf of the purchasers of the Notes
represented thereby with the Trustee, at its New York office, as custodian for
the Depositary, and registered in the name of the Depositary or the nominee of
the Depositary for the accounts of designated agents holding on behalf of
Euroclear or Clearstream Bank, duly executed by the Company and authenticated by
the Trustee as hereinafter provided. The Restricted Period will be terminated
upon the receipt by the Trustee of:

                  (1) a written certificate from the Depositary, together with
         copies of certificates from Euroclear and Clearstream Bank certifying
         that they have received certification of non-United States beneficial
         ownership of 100% of the aggregate principal amount of the Regulation S
         Temporary Global Note (except to the extent of any beneficial owners
         thereof who acquired an interest therein during the Restricted Period
         pursuant to another exemption from registration under the Securities
         Act and who will take delivery of a beneficial ownership interest in a
         144A Global Note or an IAI Global Note bearing a Private Placement
         Legend, all as contemplated by Section 2.06(b) hereof); and

                  (2) an Officers' Certificate from the Company.

         Following the termination of the Restricted Period, beneficial
         interests in the Regulation S Temporary Global Note will be exchanged
         for beneficial interests in Regulation S Permanent Global Notes
         pursuant to the Applicable Procedures. Simultaneously with the
         authentication of Regulation S Permanent Global Notes, the Trustee will
         cancel the Regulation S Temporary Global Note. The aggregate principal
         amount of the Regulation S Temporary Global Note and the Regulation S
         Permanent Global Notes may from time to time be increased or decreased
         by adjustments made on the records of the Trustee and the Depositary or
         its nominee, as the case may be, in connection with transfers of
         interest as hereinafter provided.

         (d) Euroclear and Clearstream Procedures Applicable. The provisions of
the "Operating Procedures of the Euroclear System" and "Terms and Conditions
Governing Use of Euroclear" and the "General Terms and Conditions of Clearstream
Banking" and "Customer Handbook" of Clearstream will be applicable to transfers
of beneficial interests in the Regulation S Temporary Global Note and the
Regulation S Permanent Global Notes that are held by Participants through
Euroclear or Clearstream.

Section 2.02 Execution and Authentication.

         Two Officers must sign the Notes for the Company by manual or facsimile
signature.

         If an Officer whose signature is on a Note no longer holds that office
at the time a Note is authenticated, the Note will nevertheless be valid.

                                       22
<PAGE>

         A Note will not be valid until authenticated by the manual signature of
the Trustee. The signature will be conclusive evidence that the Note has been
authenticated under this Indenture.

         The Trustee will, upon receipt of a written order of the Company signed
by two Officers (an "Authentication Order"), authenticate Notes for original
issue up to the aggregate principal amount stated in paragraph 4 of the Notes.
The aggregate principal amount of Notes outstanding at any time may not exceed
such amount except as provided in Section 2.07 hereof.

         The Trustee may appoint an authenticating agent acceptable to the
Company to authenticate Notes. An authenticating agent may authenticate Notes
whenever the Trustee may do so. Each reference in this Indenture to
authentication by the Trustee includes authentication by such agent. An
authenticating agent has the same rights as an Agent to deal with Holders or an
Affiliate of the Company.

Section 2.03 Registrar and Paying Agent.

         The Company will maintain an office or agency where Notes may be
presented for registration of transfer or for exchange ("Registrar") and an
office or agency where Notes may be presented for payment ("Paying Agent"). The
Registrar will keep a register of the Notes and of their transfer and exchange.
The Company may appoint one or more co-registrars and one or more additional
paying agents. The term "Registrar" includes any co-registrar and the term
"Paying Agent" includes any additional paying agent. The Company may change any
Paying Agent or Registrar without notice to any Holder. The Company will notify
the Trustee in writing of the name and address of any Agent not a party to this
Indenture. If the Company fails to appoint or maintain another entity as
Registrar or Paying Agent, the Trustee shall act as such. The Company or any of
its Subsidiaries may act as Paying Agent or Registrar.

         The Company initially appoints The Depository Trust Company ("DTC") to
act as Depositary with respect to the Global Notes.

         The Company initially appoints the Trustee to act as the Registrar and
Paying Agent and to act as Custodian with respect to the Global Notes.

Section 2.04 Paying Agent to Hold Money in Trust.

         The Company will require each Paying Agent other than the Trustee to
agree in writing that the Paying Agent will hold in trust for the benefit of
Holders or the Trustee all money held by the Paying Agent for the payment of
principal, premium or Liquidated Damages, if any, or interest on the Notes, and
will notify the Trustee of any default by the Company in making any such
payment. While any such default continues, the Trustee may require a Paying
Agent to pay all money held by it to the Trustee. The Company at any time may
require a Paying Agent to pay all money held by it to the Trustee. Upon payment
over to the Trustee, the Paying Agent (if other than the Company or a
Subsidiary) will have no further liability for the money. If the Company or a
Subsidiary acts as Paying Agent, it will segregate and hold in a separate trust
fund for the benefit of the Holders all money held by it as Paying Agent. Upon
any bankruptcy or reorganization proceedings relating to the Company, the
Trustee will serve as Paying Agent for the Notes.

Section 2.05 Holder Lists.

         The Trustee will preserve in as current a form as is reasonably
practicable the most recent list available to it of the names and addresses of
all Holders and shall otherwise comply with TIA Section 312(a). If the Trustee
is not the Registrar, the Company will furnish to the Trustee at least seven
Business Days before each interest payment date and at such other times as the
Trustee may request in writing, a list in

                                       23
<PAGE>

such form and as of such date as the Trustee may reasonably require of the names
and addresses of the Holders of Notes and the Company shall otherwise comply
with TIA Section 312(a).

Section 2.06 Transfer and Exchange.

         (a) Transfer and Exchange of Global Notes. A Global Note may not be
transferred as a whole except by the Depositary to a nominee of the Depositary,
by a nominee of the Depositary to the Depositary or to another nominee of the
Depositary, or by the Depositary or any such nominee to a successor Depositary
or a nominee of such successor Depositary. All Global Notes will be exchanged by
the Company for Definitive Notes if:

                  (1) the Company delivers to the Trustee notice from the
         Depositary that it is unwilling or unable to continue to act as
         Depositary or that it is no longer a clearing agency registered under
         the Exchange Act and, in either case, a successor Depositary is not
         appointed by the Company within 120 days after the date of such notice
         from the Depositary; or

                  (2) the Company in its sole discretion determines that the
         Global Notes (in whole but not in part) should be exchanged for
         Definitive Notes and delivers a written notice to such effect to the
         Trustee; provided that in no event shall the Regulation S Temporary
         Global Note be exchanged by the Company for Definitive Notes prior to
         (x) the expiration of the Restricted Period and (y) the receipt by the
         Registrar of any certificates required pursuant to Rule
         903(b)(3)(ii)(B) under the Securities Act.

         Upon the occurrence of either of the preceding events in (1) or (2)
above, Definitive Notes shall be issued in such names as the Depositary shall
instruct the Trustee. Global Notes also may be exchanged or replaced, in whole
or in part, as provided in Sections 2.07 and 2.10 hereof. Every Note
authenticated and delivered in exchange for, or in lieu of, a Global Note or any
portion thereof, pursuant to this Section 2.06 or Section 2.07 or 2.10 hereof,
shall be authenticated and delivered in the form of, and shall be, a Global
Note. A Global Note may not be exchanged for another Note other than as provided
in this Section 2.06(a), however, beneficial interests in a Global Note may be
transferred and exchanged as provided in Section 2.06(b), (c) or (f) hereof.

         (b) Transfer and Exchange of Beneficial Interests in the Global Notes.
The transfer and exchange of beneficial interests in the Global Notes will be
effected through the Depositary, in accordance with the provisions of this
Indenture and the Applicable Procedures. Beneficial interests in the Restricted
Global Notes will be subject to restrictions on transfer comparable to those set
forth herein to the extent required by the Securities Act. Transfers of
beneficial interests in the Global Notes also will require compliance with
either subparagraph (1) or (2) below, as applicable, as well as one or more of
the other following subparagraphs, as applicable:

                  (1) Transfer of Beneficial Interests in the Same Global Note.
         Beneficial interests in any Restricted Global Note may be transferred
         to Persons who take delivery thereof in the form of a beneficial
         interest in the same Restricted Global Note in accordance with the
         transfer restrictions set forth in the Private Placement Legend;
         provided, however, that prior to the expiration of the Restricted
         Period, transfers of beneficial interests in the Regulation S Temporary
         Global Note may not be made to a U.S. Person or for the account or
         benefit of a U.S. Person (other than an Initial Purchaser). Beneficial
         interests in any Unrestricted Global Note may be transferred to Persons
         who take delivery thereof in the form of a beneficial interest in an
         Unrestricted Global Note. No written orders or instructions shall be
         required to be delivered to the Registrar to effect the transfers
         described in this Section 2.06(b)(1).

                                       24
<PAGE>

                  (2) All Other Transfers and Exchanges of Beneficial Interests
         in Global Notes. In connection with all transfers and exchanges of
         beneficial interests that are not subject to Section 2.06(b)(1) above,
         the transferor of such beneficial interest must deliver to the
         Registrar either:

                           (A) both:

                                    (i) a written order from a Participant or an
                           Indirect Participant given to the Depositary in
                           accordance with the Applicable Procedures directing
                           the Depositary to credit or cause to be credited a
                           beneficial interest in another Global Note in an
                           amount equal to the beneficial interest to be
                           transferred or exchanged; and

                                    (ii) instructions given in accordance with
                           the Applicable Procedures containing information
                           regarding the Participant account to be credited with
                           such increase; or

                           (B) both:

                                    (i) a written order from a Participant or an
                           Indirect Participant given to the Depositary in
                           accordance with the Applicable Procedures directing
                           the Depositary to cause to be issued a Definitive
                           Note in an amount equal to the beneficial interest to
                           be transferred or exchanged; and

                                    (ii) instructions given by the Depositary to
                           the Registrar containing information regarding the
                           Person in whose name such Definitive Note shall be
                           registered to effect the transfer or exchange
                           referred to in (i) above; provided that in no event
                           shall Definitive Notes be issued upon the transfer or
                           exchange of beneficial interests in the Regulation S
                           Temporary Global Note prior to (A) the expiration of
                           the Restricted Period and (B) the receipt by the
                           Registrar of any certificates required pursuant to
                           Rule 903 under the Securities Act. Upon consummation
                           of an Exchange Offer by the Company in accordance
                           with Section 2.06(f) hereof, the requirements of this
                           Section 2.06(b)(2) shall be deemed to have been
                           satisfied upon receipt by the Registrar of the
                           instructions contained in the Letter of Transmittal
                           delivered by the Holder of such beneficial interests
                           in the Restricted Global Notes. Upon satisfaction of
                           all of the requirements for transfer or exchange of
                           beneficial interests in Global Notes contained in
                           this Indenture and the Notes, the Trustee shall
                           adjust the principal amount of the relevant Global
                           Note(s) pursuant to Section 2.06(h) hereof.

                  (3) Transfer of Beneficial Interests to Another Restricted
         Global Note. A beneficial interest in any Restricted Global Note may be
         transferred to a Person who takes delivery thereof in the form of a
         beneficial interest in another Restricted Global Note if the transfer
         complies with the requirements of Section 2.06(b)(2) above and the
         Registrar receives the following:

                           (A) if the transferee will take delivery in the form
                  of a beneficial interest in the 144A Global Note, then the
                  transferor must deliver a certificate in the form of Exhibit B
                  hereto, including the certifications in item (1) thereof;

                           (B) if the transferee will take delivery in the form
                  of a beneficial interest in the Regulation S Temporary Global
                  Note or the Regulation S Global Note, then the

                                       25
<PAGE>

                  transferor must deliver a certificate in the form of Exhibit B
                  hereto, including the certifications in item (2) thereof; and

                           (C) if the transferee will take delivery in the form
                  of a beneficial interest in the IAI Global Note, then the
                  transferor must deliver a certificate in the form of Exhibit B
                  hereto, including the certifications, certificates and Opinion
                  of Counsel required by item (3) thereof, if applicable.

                  (4) Transfer and Exchange of Beneficial Interests in a
         Restricted Global Note for Beneficial Interests in an Unrestricted
         Global Note. A beneficial interest in any Restricted Global Note may be
         exchanged by any holder thereof for a beneficial interest in an
         Unrestricted Global Note or transferred to a Person who takes delivery
         thereof in the form of a beneficial interest in an Unrestricted Global
         Note if the exchange or transfer complies with the requirements of
         Section 2.06(b)(2) above and:

                           (A) such exchange or transfer is effected pursuant to
                  the Exchange Offer in accordance with the Registration Rights
                  Agreement and the holder of the beneficial interest to be
                  transferred, in the case of an exchange, or the transferee, in
                  the case of a transfer, certifies in the applicable Letter of
                  Transmittal that it is not (i) a Broker-Dealer, (ii) a Person
                  participating in the distribution of the Exchange Notes or
                  (iii) a Person who is an affiliate (as defined in Rule 144) of
                  the Company;

                           (B) such transfer is effected pursuant to the Shelf
                  Registration Statement in accordance with the Registration
                  Rights Agreement;

                           (C) such transfer is effected by a Broker-Dealer
                  pursuant to the Exchange Offer Registration Statement in
                  accordance with the Registration Rights Agreement; or

                           (D) the Registrar receives the following:

                                    (i) if the holder of such beneficial
                           interest in a Restricted Global Note proposes to
                           exchange such beneficial interest for a beneficial
                           interest in an Unrestricted Global Note, a
                           certificate from such holder in the form of Exhibit C
                           hereto, including the certifications in item (1)(a)
                           thereof; or

                                    (ii) if the holder of such beneficial
                           interest in a Restricted Global Note proposes to
                           transfer such beneficial interest to a Person who
                           shall take delivery thereof in the form of a
                           beneficial interest in an Unrestricted Global Note, a
                           certificate from such holder in the form of Exhibit B
                           hereto, including the certifications in item (4)
                           thereof;

                  and, in each such case set forth in this subparagraph (D), if
                  the Registrar so requests or if the Applicable Procedures so
                  require, an Opinion of Counsel in form reasonably acceptable
                  to the Registrar to the effect that such exchange or transfer
                  is in compliance with the Securities Act and that the
                  restrictions on transfer contained herein and in the Private
                  Placement Legend are no longer required in order to maintain
                  compliance with the Securities Act.

         If any such transfer is effected pursuant to subparagraph (B) or (D)
above at a time when an Unrestricted Global Note has not yet been issued, the
Company shall issue and, upon receipt of an Authentication Order in accordance
with Section 2.02 hereof, the Trustee shall authenticate one or more

                                       26
<PAGE>

Unrestricted Global Notes in an aggregate principal amount equal to the
aggregate principal amount of beneficial interests transferred pursuant to
subparagraph (B) or (D) above.

         Beneficial interests in an Unrestricted Global Note cannot be exchanged
for, or transferred to Persons who take delivery thereof in the form of, a
beneficial interest in a Restricted Global Note.

         (c) Transfer or Exchange of Beneficial Interests for Definitive Notes.

                  (1) Beneficial Interests in Restricted Global Notes to
         Restricted Definitive Notes. If any holder of a beneficial interest in
         a Restricted Global Note proposes to exchange such beneficial interest
         for a Restricted Definitive Note or to transfer such beneficial
         interest to a Person who takes delivery thereof in the form of a
         Restricted Definitive Note, then, upon receipt by the Registrar of the
         following documentation:

                           (A) if the holder of such beneficial interest in a
                  Restricted Global Note proposes to exchange such beneficial
                  interest for a Restricted Definitive Note, a certificate from
                  such holder in the form of Exhibit C hereto, including the
                  certifications in item (2)(a) thereof;

                           (B) if such beneficial interest is being transferred
                  to a QIB in accordance with Rule 144A, a certificate to the
                  effect set forth in Exhibit B hereto, including the
                  certifications in item (1) thereof;

                           (C) if such beneficial interest is being transferred
                  to a Non-U.S. Person in an offshore transaction in accordance
                  with Rule 903 or Rule 904, a certificate to the effect set
                  forth in Exhibit B hereto, including the certifications in
                  item (2) thereof;

                           (D) if such beneficial interest is being transferred
                  pursuant to an exemption from the registration requirements of
                  the Securities Act in accordance with Rule 144, a certificate
                  to the effect set forth in Exhibit B hereto, including the
                  certifications in item (3)(a) thereof;

                           (E) if such beneficial interest is being transferred
                  to an Institutional Accredited Investor in reliance on an
                  exemption from the registration requirements of the Securities
                  Act other than those listed in subparagraphs (B) through (D)
                  above, a certificate to the effect set forth in Exhibit B
                  hereto, including the certifications, certificates and Opinion
                  of Counsel required by item (3) thereof, if applicable;

                           (F) if such beneficial interest is being transferred
                  to the Company or any of its Subsidiaries, a certificate to
                  the effect set forth in Exhibit B hereto, including the
                  certifications in item (3)(b) thereof; or

                           (G) if such beneficial interest is being transferred
                  pursuant to an effective registration statement under the
                  Securities Act, a certificate to the effect set forth in
                  Exhibit B hereto, including the certifications in item (3)(c)
                  thereof,

the Trustee shall cause the aggregate principal amount of the applicable Global
Note to be reduced accordingly pursuant to Section 2.06(h) hereof, and the
Company shall execute and the Trustee shall authenticate and deliver to the
Person designated in the instructions a Definitive Note in the appropriate
principal amount. Any Definitive Note issued in exchange for a beneficial
interest in a Restricted Global Note pursuant to this Section 2.06(c) shall be
registered in such name or names and in such authorized

                                       27
<PAGE>

denomination or denominations as the holder of such beneficial interest shall
instruct the Registrar through instructions from the Depositary and the
Participant or Indirect Participant. The Trustee shall deliver such Definitive
Notes to the Persons in whose names such Notes are so registered. Any Definitive
Note issued in exchange for a beneficial interest in a Restricted Global Note
pursuant to this Section 2.06(c)(1) shall bear the Private Placement Legend and
shall be subject to all restrictions on transfer contained therein.

                  (2) Beneficial Interests in Regulation S Temporary Global Note
         to Definitive Notes. Notwithstanding Sections 2.06(c)(1)(A) and (C)
         hereof, a beneficial interest in the Regulation S Temporary Global Note
         may not be exchanged for a Definitive Note or transferred to a Person
         who takes delivery thereof in the form of a Definitive Note prior to
         (A) the expiration of the Restricted Period and (B) the receipt by the
         Registrar of any certificates required pursuant to Rule
         903(b)(3)(ii)(B) under the Securities Act, except in the case of a
         transfer pursuant to an exemption from the registration requirements of
         the Securities Act other than Rule 903 or Rule 904.

                  (3) Beneficial Interests in Restricted Global Notes to
         Unrestricted Definitive Notes. A holder of a beneficial interest in a
         Restricted Global Note may exchange such beneficial interest for an
         Unrestricted Definitive Note or may transfer such beneficial interest
         to a Person who takes delivery thereof in the form of an Unrestricted
         Definitive Note only if:

                           (A) such exchange or transfer is effected pursuant to
                  the Exchange Offer in accordance with the Registration Rights
                  Agreement and the holder of such beneficial interest, in the
                  case of an exchange, or the transferee, in the case of a
                  transfer, certifies in the applicable Letter of Transmittal
                  that it is not (i) a Broker-Dealer, (ii) a Person
                  participating in the distribution of the Exchange Notes or
                  (iii) a Person who is an affiliate (as defined in Rule 144) of
                  the Company;

                           (B) such transfer is effected pursuant to the Shelf
                  Registration Statement in accordance with the Registration
                  Rights Agreement;

                           (C) such transfer is effected by a Broker-Dealer
                  pursuant to the Exchange Offer Registration Statement in
                  accordance with the Registration Rights Agreement; or

                           (D) the Registrar receives the following:

                                    (i) if the holder of such beneficial
                           interest in a Restricted Global Note proposes to
                           exchange such beneficial interest for a Definitive
                           Note that does not bear the Private Placement Legend,
                           a certificate from such holder in the form of Exhibit
                           C hereto, including the certifications in item (1)(b)
                           thereof; or

                                    (ii) if the holder of such beneficial
                           interest in a Restricted Global Note proposes to
                           transfer such beneficial interest to a Person who
                           shall take delivery thereof in the form of a
                           Definitive Note that does not bear the Private
                           Placement Legend, a certificate from such holder in
                           the form of Exhibit B hereto, including the
                           certifications in item (4) thereof;

                  and, in each such case set forth in this subparagraph (D), if
                  the Registrar so requests or if the Applicable Procedures so
                  require, an Opinion of Counsel in form reasonably acceptable
                  to the Registrar to the effect that such exchange or transfer
                  is in compliance with the Securities Act and that the
                  restrictions on transfer contained herein and in the

                                       28
<PAGE>

                  Private Placement Legend are no longer required in order to
                  maintain compliance with the Securities Act.

                  (4) Beneficial Interests in Unrestricted Global Notes to
         Unrestricted Definitive Notes. If any holder of a beneficial interest
         in an Unrestricted Global Note proposes to exchange such beneficial
         interest for a Definitive Note or to transfer such beneficial interest
         to a Person who takes delivery thereof in the form of a Definitive
         Note, then, upon satisfaction of the conditions set forth in Section
         2.06(b)(2) hereof, the Trustee will cause the aggregate principal
         amount of the applicable Global Note to be reduced accordingly pursuant
         to Section 2.06(h) hereof, and the Company will execute and the Trustee
         will authenticate and deliver to the Person designated in the
         instructions a Definitive Note in the appropriate principal amount. Any
         Definitive Note issued in exchange for a beneficial interest pursuant
         to this Section 2.06(c)(3) will be registered in such name or names and
         in such authorized denomination or denominations as the holder of such
         beneficial interest requests through instructions to the Registrar from
         or through the Depositary and the Participant or Indirect Participant.
         The Trustee will deliver such Definitive Notes to the Persons in whose
         names such Notes are so registered. Any Definitive Note issued in
         exchange for a beneficial interest pursuant to this Section 2.06(c)(3)
         will not bear the Private Placement Legend.

         (d) Transfer and Exchange of Definitive Notes for Beneficial Interests.

                  (1) Restricted Definitive Notes to Beneficial Interests in
         Restricted Global Notes. If any Holder of a Restricted Definitive Note
         proposes to exchange such Note for a beneficial interest in a
         Restricted Global Note or to transfer such Restricted Definitive Notes
         to a Person who takes delivery thereof in the form of a beneficial
         interest in a Restricted Global Note, then, upon receipt by the
         Registrar of the following documentation:

                           (A) if the Holder of such Restricted Definitive Note
                  proposes to exchange such Note for a beneficial interest in a
                  Restricted Global Note, a certificate from such Holder in the
                  form of Exhibit C hereto, including the certifications in item
                  (2)(b) thereof;

                           (B) if such Restricted Definitive Note is being
                  transferred to a QIB in accordance with Rule 144A, a
                  certificate to the effect set forth in Exhibit B hereto,
                  including the certifications in item (1) thereof;

                           (C) if such Restricted Definitive Note is being
                  transferred to a Non-U.S. Person in an offshore transaction in
                  accordance with Rule 903 or Rule 904, a certificate to the
                  effect set forth in Exhibit B hereto, including the
                  certifications in item (2) thereof;

                           (D) if such Restricted Definitive Note is being
                  transferred pursuant to an exemption from the registration
                  requirements of the Securities Act in accordance with Rule
                  144, a certificate to the effect set forth in Exhibit B
                  hereto, including the certifications in item (3)(a) thereof;

                           (E) if such Restricted Definitive Note is being
                  transferred to an Institutional Accredited Investor in
                  reliance on an exemption from the registration requirements of
                  the Securities Act other than those listed in subparagraphs
                  (B) through (D) above, a certificate to the effect set forth
                  in Exhibit B hereto, including the certifications,
                  certificates and Opinion of Counsel required by item (3)
                  thereof, if applicable;

                                       29
<PAGE>

                           (F) if such Restricted Definitive Note is being
                  transferred to the Company or any of its Subsidiaries, a
                  certificate to the effect set forth in Exhibit B hereto,
                  including the certifications in item (3)(b) thereof; or

                           (G) if such Restricted Definitive Note is being
                  transferred pursuant to an effective registration statement
                  under the Securities Act, a certificate to the effect set
                  forth in Exhibit B hereto, including the certifications in
                  item (3)(c) thereof,

                  the Trustee will cancel the Restricted Definitive Note,
                  increase or cause to be increased the aggregate principal
                  amount of, in the case of clause (A) above, the appropriate
                  Restricted Global Note, in the case of clause (B) above, the
                  144A Global Note, in the case of clause (C) above, the
                  Regulation S Global Note, and in all other cases, the IAI
                  Global Note.

                  (2) Restricted Definitive Notes to Beneficial Interests in
         Unrestricted Global Notes. A Holder of a Restricted Definitive Note may
         exchange such Note for a beneficial interest in an Unrestricted Global
         Note or transfer such Restricted Definitive Note to a Person who takes
         delivery thereof in the form of a beneficial interest in an
         Unrestricted Global Note only if:

                           (A) such exchange or transfer is effected pursuant to
                  the Exchange Offer in accordance with the Registration Rights
                  Agreement and the Holder, in the case of an exchange, or the
                  transferee, in the case of a transfer, certifies in the
                  applicable Letter of Transmittal that it is not (i) a
                  Broker-Dealer, (ii) a Person participating in the distribution
                  of the Exchange Notes or (iii) a Person who is an affiliate
                  (as defined in Rule 144) of the Company;

                           (B) such transfer is effected pursuant to the Shelf
                  Registration Statement in accordance with the Registration
                  Rights Agreement;

                           (C) such transfer is effected by a Broker-Dealer
                  pursuant to the Exchange Offer Registration Statement in
                  accordance with the Registration Rights Agreement; or

                           (D) the Registrar receives the following:

                                    (i) if the Holder of such Definitive Notes
                           proposes to exchange such Notes for a beneficial
                           interest in the Unrestricted Global Note, a
                           certificate from such Holder in the form of Exhibit C
                           hereto, including the certifications in item (1)(c)
                           thereof; or

                                    (ii) if the Holder of such Definitive Notes
                           proposes to transfer such Notes to a Person who shall
                           take delivery thereof in the form of a beneficial
                           interest in the Unrestricted Global Note, a
                           certificate from such Holder in the form of Exhibit B
                           hereto, including the certifications in item (4)
                           thereof;

                  and, in each such case set forth in this subparagraph (D), if
                  the Registrar so requests or if the Applicable Procedures so
                  require, an Opinion of Counsel in form reasonably acceptable
                  to the Registrar to the effect that such exchange or transfer
                  is in compliance with the Securities Act and that the
                  restrictions on transfer contained herein and in the Private
                  Placement Legend are no longer required in order to maintain
                  compliance with the Securities Act.

                                       30
<PAGE>

                  Upon satisfaction of the conditions of any of the
         subparagraphs in this Section 2.06(d)(2), the Trustee will cancel the
         Definitive Notes and increase or cause to be increased the aggregate
         principal amount of the Unrestricted Global Note.

                  (3) Unrestricted Definitive Notes to Beneficial Interests in
         Unrestricted Global Notes. A Holder of an Unrestricted Definitive Note
         may exchange such Note for a beneficial interest in an Unrestricted
         Global Note or transfer such Definitive Notes to a Person who takes
         delivery thereof in the form of a beneficial interest in an
         Unrestricted Global Note at any time. Upon receipt of a request for
         such an exchange or transfer, the Trustee will cancel the applicable
         Unrestricted Definitive Note and increase or cause to be increased the
         aggregate principal amount of one of the Unrestricted Global Notes.

                  If any such exchange or transfer from a Definitive Note to a
         beneficial interest is effected pursuant to subparagraphs (2)(B),
         (2)(D) or (3) above at a time when an Unrestricted Global Note has not
         yet been issued, the Company will issue and, upon receipt of an
         Authentication Order in accordance with Section 2.02 hereof, the
         Trustee will authenticate one or more Unrestricted Global Notes in an
         aggregate principal amount equal to the principal amount of Definitive
         Notes so transferred.

         (e) Transfer and Exchange of Definitive Notes for Definitive Notes.
Upon request by a Holder of Definitive Notes and such Holder's compliance with
the provisions of this Section 2.06(e), the Registrar will register the transfer
or exchange of Definitive Notes. Prior to such registration of transfer or
exchange, the requesting Holder must present or surrender to the Registrar the
Definitive Notes duly endorsed or accompanied by a written instruction of
transfer in form satisfactory to the Registrar duly executed by such Holder or
by its attorney, duly authorized in writing. In addition, the requesting Holder
must provide any additional certifications, documents and information, as
applicable, required pursuant to the following provisions of this Section
2.06(e).

                  (1) Restricted Definitive Notes to Restricted Definitive
         Notes. Any Restricted Definitive Note may be transferred to and
         registered in the name of Persons who take delivery thereof in the form
         of a Restricted Definitive Note if the Registrar receives the
         following:

                           (A) if the transfer will be made pursuant to Rule
                  144A under the Securities Act, then the transferor must
                  deliver a certificate in the form of Exhibit B hereto,
                  including the certifications in item (1) thereof;

                           (B) if the transfer will be made pursuant to Rule 903
                  or Rule 904, then the transferor must deliver a certificate in
                  the form of Exhibit B hereto, including the certifications in
                  item (2) thereof; and

                           (C) if the transfer will be made pursuant to any
                  other exemption from the registration requirements of the
                  Securities Act, then the transferor must deliver a certificate
                  in the form of Exhibit B hereto, including the certifications,
                  certificates and Opinion of Counsel required by item (3)
                  thereof, if applicable.

                  (2) Restricted Definitive Notes to Unrestricted Definitive
         Notes. Any Restricted Definitive Note may be exchanged by the Holder
         thereof for an Unrestricted Definitive Note or transferred to a Person
         or Persons who take delivery thereof in the form of an Unrestricted
         Definitive Note if:

                                       31
<PAGE>

                           (A) such exchange or transfer is effected pursuant to
                  the Exchange Offer in accordance with the Registration Rights
                  Agreement and the Holder, in the case of an exchange, or the
                  transferee, in the case of a transfer, certifies in the
                  applicable Letter of Transmittal that it is not (i) a
                  Broker-Dealer, (ii) a Person participating in the distribution
                  of the Exchange Notes or (iii) a Person who is an affiliate
                  (as defined in Rule 144) of the Company;

                           (B) any such transfer is effected pursuant to the
                  Shelf Registration Statement in accordance with the
                  Registration Rights Agreement;

                           (C) any such transfer is effected by a Broker-Dealer
                  pursuant to the Exchange Offer Registration Statement in
                  accordance with the Registration Rights Agreement; or

                           (D) the Registrar receives the following:

                                    (i) if the Holder of such Restricted
                           Definitive Notes proposes to exchange such Notes for
                           an Unrestricted Definitive Note, a certificate from
                           such Holder in the form of Exhibit C hereto,
                           including the certifications in item (1)(d) thereof;
                           or

                                    (ii) if the Holder of such Restricted
                           Definitive Notes proposes to transfer such Notes to a
                           Person who shall take delivery thereof in the form of
                           an Unrestricted Definitive Note, a certificate from
                           such Holder in the form of Exhibit B hereto,
                           including the certifications in item (4) thereof;

                  and, in each such case set forth in this subparagraph (D), if
                  the Registrar so requests, an Opinion of Counsel in form
                  reasonably acceptable to the Company to the effect that such
                  exchange or transfer is in compliance with the Securities Act
                  and that the restrictions on transfer contained herein and in
                  the Private Placement Legend are no longer required in order
                  to maintain compliance with the Securities Act.

                  (3) Unrestricted Definitive Notes to Unrestricted Definitive
         Notes. A Holder of Unrestricted Definitive Notes may transfer such
         Notes to a Person who takes delivery thereof in the form of an
         Unrestricted Definitive Note. Upon receipt of a request to register
         such a transfer, the Registrar shall register the Unrestricted
         Definitive Notes pursuant to the instructions from the Holder thereof.

         (f) Exchange Offer. Upon the occurrence of the Exchange Offer in
accordance with the Registration Rights Agreement, the Company will issue and,
upon receipt of an Authentication Order in accordance with Section 2.02 hereof,
the Trustee will authenticate:

                  (1) one or more Unrestricted Global Notes in an aggregate
         principal amount equal to the principal amount of the beneficial
         interests in the Restricted Global Notes tendered into the Exchange
         Offer by Persons that certify in the applicable Letters of Transmittal
         that (A) they are not Broker-Dealers, (B) they are not participating in
         a distribution of the Exchange Notes and (C) they are not affiliates
         (as defined in Rule 144) of the Company; and

                  (2) Unrestricted Definitive Notes in an aggregate principal
         amount equal to the principal amount of the Restricted Definitive Notes
         accepted for exchange in the Exchange Offer.

                                       32
<PAGE>

         Concurrently with the issuance of such Notes, the Trustee will cause
the aggregate principal amount of the applicable Restricted Global Notes to be
reduced accordingly, and the Company will execute and the Trustee will
authenticate and deliver to the Persons designated by the Holders of Definitive
Notes so accepted Unrestricted Definitive Notes in the appropriate principal
amount.

         (g) Legends. The following legends will appear on the face of all
Global Notes and Definitive Notes issued under this Indenture unless
specifically stated otherwise in the applicable provisions of this Indenture.

                  (1) Private Placement Legend.

                           (A) Except as permitted by subparagraph (B) below,
                  each Global Note and each Definitive Note (and all Notes
                  issued in exchange therefor or substitution thereof) shall
                  bear the legend in substantially the following form:

"THE SECURITY (OR ITS PREDECESSOR) EVIDENCED HEREBY WAS ORIGINALLY ISSUED IN A
TRANSACTION EXEMPT FROM REGISTRATION UNDER SECTION 5 OF THE UNITED STATES
SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND THE SECURITY
EVIDENCED HEREBY MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE
ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH
PURCHASER OF THE SECURITY EVIDENCED HEREBY IS HEREBY NOTIFIED THAT THE SELLER
MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE
SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER. THE HOLDER OF THE SECURITY
EVIDENCED HEREBY AGREES FOR THE BENEFIT OF THE ISSUER THAT (A) SUCH SECURITY MAY
BE RESOLD, PLEDGED OR OTHERWISE TRANSFERRED ONLY (1)(a) IN THE UNITED STATES TO
A PERSON WHO THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER
(AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) IN A TRANSACTION MEETING THE
REQUIREMENTS OF RULE 144A, (b) OUTSIDE THE UNITED STATES IN AN OFFSHORE
TRANSACTION IN ACCORDANCE WITH RULE 904 UNDER THE SECURITIES ACT, (c) IN A
TRANSACTION MEETING THE REQUIREMENTS OF RULE 144 UNDER THE SECURITIES ACT, (d)
TO AN INSTITUTIONAL "ACCREDITED INVESTOR" (AS DEFINED IN RULE 501 (a)(1), (2),
(3) OR (7) OF THE SECURITIES ACT (AN "INSTITUTIONAL ACCREDITED INVESTOR")) THAT,
PRIOR TO SUCH TRANSFER, FURNISHES THE TRUSTEE A SIGNED LETTER CONTAINING CERTAIN
REPRESENTATIONS AND AGREEMENTS (THE FORM OF WHICH CAN BE OBTAINED FROM THE
TRUSTEE) AND, IF SUCH TRANSFER IS IN RESPECT OF AN AGGREGATE PRINCIPAL AMOUNT OF
NOTES LESS THAN $250,000, AN OPINION OF COUNSEL ACCEPTABLE TO THE ISSUER THAT
SUCH TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT OR (e) IN ACCORDANCE WITH
ANOTHER EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT (AND
BASED UPON AN OPINION OF COUNSEL IF THE ISSUER SO REQUESTS), (2) TO THE ISSUER
OR (3) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT AND, IN EACH CASE, IN
ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES
OR ANY OTHER APPLICABLE JURISDICTION AND (B) THE HOLDER WILL, AND EACH
SUBSEQUENT HOLDER IS REQUIRED TO, NOTIFY ANY PURCHASER FROM IT OF THE SECURITY
EVIDENCED HEREBY OF THE RESALE RESTRICTIONS SET FORTH IN (A) ABOVE."

                           (B) Notwithstanding the foregoing, any Global Note or
                  Definitive Note issued pursuant to subparagraphs (b)(4),
                  (c)(3), (c)(4), (d)(2), (d)(3), (e)(2), (e)(3) or (f) of this
                  Section 2.06 (and all Notes issued in exchange therefor or
                  substitution thereof) will not bear the Private Placement
                  Legend.

                                       33
<PAGE>

                  (2) Global Note Legend. Each Global Note will bear a legend in
         substantially the following form:

"THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE
GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL
OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES
EXCEPT THAT (1) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED
PURSUANT TO SECTION 2.06 OF THE INDENTURE, (2) THIS GLOBAL NOTE MAY BE EXCHANGED
IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.06(a) OF THE INDENTURE, (3) THIS
GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION
2.11 OF THE INDENTURE AND (IV) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A
SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF AMERICAN CELLULAR
CORPORATION.

UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR NOTES IN DEFINITIVE
FORM, THIS NOTE MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A
NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR
ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A
SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY. UNLESS THIS
CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST
COMPANY (55 WATER STREET, NEW YORK, NEW YORK) ("DTC"), TO THE COMPANY OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE
ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS MAY BE
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO
CEDE & CO. OR SUCH OTHER ENTITY AS MAY BE REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN."

                  (3) Regulation S Temporary Global Note Legend. The Regulation
         S Temporary Global Note will bear a legend in substantially the
         following form:

"THE RIGHTS ATTACHING TO THIS REGULATION S TEMPORARY GLOBAL NOTE, AND THE
CONDITIONS AND PROCEDURES GOVERNING ITS EXCHANGE FOR CERTIFICATED NOTES, ARE AS
SPECIFIED IN THE INDENTURE (AS DEFINED HEREIN). NEITHER THE HOLDER NOR THE
BENEFICIAL OWNERS OF THIS REGULATION S TEMPORARY GLOBAL NOTE SHALL BE ENTITLED
TO RECEIVE PAYMENT OF INTEREST HEREON."

         (h) Cancellation and/or Adjustment of Global Notes. At such time as all
beneficial interests in a particular Global Note have been exchanged for
Definitive Notes or a particular Global Note has been redeemed, repurchased or
canceled in whole and not in part, each such Global Note will be returned to or
retained and canceled by the Trustee in accordance with Section 2.11 hereof. At
any time prior to such cancellation, if any beneficial interest in a Global Note
is exchanged for or transferred to a Person who will take delivery thereof in
the form of a beneficial interest in another Global Note or for Definitive
Notes, the principal amount of Notes represented by such Global Note will be
reduced accordingly and an endorsement will be made on such Global Note by the
Trustee or by the Depositary at the direction of the Trustee to reflect such
reduction; and if the beneficial interest is being exchanged for or transferred
to a Person who will take delivery thereof in the form of a beneficial interest
in another Global Note, such other Global Note will be increased accordingly and
an endorsement will be made on such Global Note by the Trustee or by the
Depositary at the direction of the Trustee to reflect such increase.

                                       34
<PAGE>

         (i) General Provisions Relating to Transfers and Exchanges.

                  (1) To permit registrations of transfers and exchanges, the
         Company will execute and the Trustee will authenticate Global Notes and
         Definitive Notes upon receipt of an Authentication Order in accordance
         with Section 2.02 or at the Registrar's request.

                  (2) No service charge will be made to a Holder of a Global
         Note or to a Holder of a Definitive Note for any registration of
         transfer or exchange, but the Company may require payment of a sum
         sufficient to cover any transfer tax or similar governmental charge
         payable in connection therewith (other than any such transfer taxes or
         similar governmental charge payable upon exchange or transfer pursuant
         to Sections 2.10, 3.06, 3.09, 4.10, 4.15 and 9.05 hereof).

                  (3) The Registrar will not be required to register the
         transfer of or exchange any Note selected for redemption in whole or in
         part, except the unredeemed portion of any Note being redeemed in part.

                  (4) All Global Notes and Definitive Notes issued upon any
         registration of transfer or exchange of Global Notes or Definitive
         Notes will be the valid obligations of the Company, evidencing the same
         debt, and entitled to the same benefits under this Indenture, as the
         Global Notes or Definitive Notes surrendered upon such registration of
         transfer or exchange.

                  (5) The Company will not be required:

                           (A) to issue, to register the transfer of or to
                  exchange any Notes during a period beginning at the opening of
                  business 15 days before the day of any selection of Notes for
                  redemption under Section 3.02 hereof and ending at the close
                  of business on the day of selection;

                           (B) to register the transfer of or to exchange any
                  Note selected for redemption in whole or in part, except the
                  unredeemed portion of any Note being redeemed in part; or

                           (C) to register the transfer of or to exchange a Note
                  between a record date and the next succeeding interest payment
                  date.

                  (6) Prior to due presentment for the registration of a
         transfer of any Note, the Trustee, any Agent and the Company may deem
         and treat the Person in whose name any Note is registered as the
         absolute owner of such Note for the purpose of receiving payment of
         principal of and interest on such Notes and for all other purposes, and
         none of the Trustee, any Agent or the Company shall be affected by
         notice to the contrary.

                  (7) The Trustee will authenticate Global Notes and Definitive
         Notes in accordance with the provisions of Section 2.02 hereof.

                  (8) All certifications, certificates and Opinions of Counsel
         required to be submitted to the Registrar pursuant to this Section 2.06
         to effect a registration of transfer or exchange may be submitted by
         facsimile.

Section 2.07 Replacement Notes.

         If any mutilated Note is surrendered to the Trustee or the Company and
the Trustee receives evidence to its satisfaction of the destruction, loss or
theft of any Note, the Company will issue and the

                                       35
<PAGE>

Trustee, upon receipt of an Authentication Order, will authenticate a
replacement Note if the Trustee's requirements are met. If required by the
Trustee or the Company, an indemnity bond must be supplied by the Holder that is
sufficient in the judgment of the Trustee and the Company to protect the
Company, the Trustee, any Agent and any authenticating agent from any loss that
any of them may suffer if a Note is replaced. The Company may charge for its
expenses in replacing a Note.

         Every replacement Note is an additional obligation of the Company and
will be entitled to all of the benefits of this Indenture equally and
proportionately with all other Notes duly issued hereunder.

Section 2.08 Outstanding Notes.

         The Notes outstanding at any time are all the Notes authenticated by
the Trustee except for those canceled by it, those delivered to it for
cancellation, those reductions in the interest in a Global Note effected by the
Trustee in accordance with the provisions hereof, and those described in this
Section as not outstanding. Except as set forth in Section 2.09 hereof, a Note
does not cease to be outstanding because the Company or an Affiliate of the
Company holds the Note.

         If a Note is replaced pursuant to Section 2.07 hereof, it ceases to be
outstanding unless the Trustee receives proof satisfactory to it that the
replaced Note is held by a protected purchaser.

         If the principal amount of any Note is considered paid under Section
4.01 hereof, it ceases to be outstanding and interest on it ceases to accrue.

         If the Paying Agent (other than the Company, a Subsidiary or an
Affiliate of any thereof) holds, on a redemption date or maturity date, money
sufficient to pay Notes payable on that date, then on and after that date such
Notes will be deemed to be no longer outstanding and will cease to accrue
interest.

Section 2.09 Treasury Notes.

         In determining whether the Holders of the required principal amount of
Notes have concurred in any direction, waiver or consent, Notes owned by the
Company, or by any Person directly or indirectly controlling or controlled by or
under direct or indirect common control with the Company, will be considered as
though not outstanding, except that for the purposes of determining whether the
Trustee will be protected in relying on any such direction, waiver or consent,
only Notes that the Trustee knows are so owned will be so disregarded.

Section 2.10 Temporary Notes.

         Until certificates representing Notes are ready for delivery, the
Company may prepare and the Trustee, upon receipt of an Authentication Order,
will authenticate temporary Notes. Temporary Notes will be substantially in the
form of certificated Notes but may have variations that the Company considers
appropriate for temporary Notes and as may be reasonably acceptable to the
Trustee. Without unreasonable delay, the Company will prepare and the Trustee
will authenticate definitive Notes in exchange for temporary Notes.

         Holders of temporary Notes will be entitled to all of the benefits of
this Indenture.

Section 2.11 Cancellation.

         The Company at any time may deliver Notes to the Trustee for
cancellation. The Registrar and Paying Agent will forward to the Trustee any
Notes surrendered to them for registration of transfer,

                                       36
<PAGE>

exchange or payment. The Trustee and no one else will cancel all Notes
surrendered for registration of transfer, exchange, payment, replacement or
cancellation and will destroy canceled Notes (subject to the record retention
requirement of the Exchange Act). Certification of the destruction of all
canceled Notes will be delivered to the Company. The Company may not issue new
Notes to replace Notes that it has paid or that have been delivered to the
Trustee for cancellation.

Section 2.12 Defaulted Interest.

         If the Company defaults in a payment of interest on the Notes, it will
pay the defaulted interest in any lawful manner plus, to the extent lawful,
interest payable on the defaulted interest, to the Persons who are Holders on a
subsequent special record date, in each case at the rate provided in the Notes
and in Section 4.01 hereof. The Company will notify the Trustee in writing of
the amount of defaulted interest proposed to be paid on each Note and the date
of the proposed payment. The Company will fix or cause to be fixed each such
special record date and payment date, provided that no such special record date
may be less than 10 days prior to the related payment date for such defaulted
interest. At least 15 days before the special record date, the Company (or, upon
the written request of the Company, the Trustee in the name and at the expense
of the Company) will mail or cause to be mailed to Holders a notice that states
the special record date, the related payment date and the amount of such
interest to be paid.

                                   ARTICLE 3.
                            REDEMPTION AND PREPAYMENT

Section 3.01 Notices to Trustee.

         If the Company elects to redeem Notes pursuant to the optional
redemption provisions of Section 3.07 hereof, it must furnish to the Trustee, at
least 30 days but not more than 60 days before a redemption date, an Officers'
Certificate setting forth:

                  (1) the clause of this Indenture pursuant to which the
         redemption shall occur;

                  (2) the redemption date;

                  (3) the principal amount of Notes to be redeemed; and

                  (4) the redemption price.

Section 3.02 Selection of Notes to Be Redeemed or Purchased.

         If less than all of the Notes are to be redeemed or purchased in an
offer to purchase at any time, the Trustee will select Notes for redemption or
purchase as follows:

                  (1) if the Notes are listed on any national securities
         exchange, in compliance with the requirements of the principal national
         securities exchange on which the Notes are listed; or

                  (2) if the Notes are not listed on any national securities
         exchange, on a pro rata basis, by lot or by such method as the Trustee
         shall deem fair and appropriate.

         In the event of partial redemption or purchase by lot, the particular
Notes to be redeemed or purchased will be selected, unless otherwise provided
herein, not less than 30 nor more than 60 days prior to the redemption or
purchase date by the Trustee from the outstanding Notes not previously called
for redemption or purchase.

                                       37
<PAGE>

         The Trustee will promptly notify the Company in writing of the Notes
selected for redemption or purchase and, in the case of any Note selected for
partial redemption or purchase, the principal amount thereof to be redeemed or
purchased. Notes and portions of Notes selected will be in amounts of $1,000 or
whole multiples of $1,000; except that if all of the Notes of a Holder are to be
redeemed or purchased, the entire outstanding amount of Notes held by such
Holder, even if not a multiple of $1,000, shall be redeemed or purchased. Except
as provided in the preceding sentence, provisions of this Indenture that apply
to Notes called for redemption or purchase also apply to portions of Notes
called for redemption or purchase.

Section 3.03 Notice of Redemption.

         Subject to the provisions of Section 3.09 hereof, at least 30 days but
not more than 60 days before a redemption date, the Company will mail or cause
to be mailed, by first class mail, a notice of redemption to each Holder whose
Notes are to be redeemed at its registered address, except that redemption
notices may be mailed more than 60 days prior to a redemption date if the notice
is issued in connection with a defeasance of the Notes or a satisfaction and
discharge of this Indenture pursuant to Articles 8 or 11 of this Indenture.

         The notice will identify the Notes to be redeemed and will state:

                  (1) the redemption date;

                  (2) the redemption price;

                  (3) if any Note is being redeemed in part, the portion of the
         principal amount of such Note to be redeemed and that, after the
         redemption date upon surrender of such Note, a new Note or Notes in
         principal amount equal to the unredeemed portion will be issued upon
         cancellation of the original Note;

                  (4) the name and address of the Paying Agent;

                  (5) that Notes called for redemption must be surrendered to
         the Paying Agent to collect the redemption price;

                  (6) that, unless the Company defaults in making such
         redemption payment, interest on Notes called for redemption ceases to
         accrue on and after the redemption date;

                  (7) the paragraph of the Notes and/or Section of this
         Indenture pursuant to which the Notes called for redemption are being
         redeemed; and

                  (8) that no representation is made as to the correctness or
         accuracy of the CUSIP number, if any, listed in such notice or printed
         on the Notes.

         At the Company's request, the Trustee will give the notice of
redemption in the Company's name and at its expense; provided, however, that the
Company has delivered to the Trustee, at least 45 days prior to the redemption
date, an Officers' Certificate requesting that the Trustee give such notice and
setting forth the information to be stated in such notice as provided in the
preceding paragraph.

Section 3.04 Effect of Notice of Redemption.

                                       38
<PAGE>

         Once notice of redemption is mailed in accordance with Section 3.03
hereof, Notes called for redemption become irrevocably due and payable on the
redemption date at the redemption price. A notice of redemption may not be
conditional.

Section 3.05 Deposit of Redemption or Purchase Price.

         One Business Day prior to the redemption or purchase price date, the
Company will deposit with the Trustee or with the Paying Agent money sufficient
to pay the redemption or purchase price of and accrued interest and Liquidated
Damages, if any, on all Notes to be redeemed or purchased on that date. The
Trustee or the Paying Agent will promptly return to the Company any money
deposited with the Trustee or the Paying Agent by the Company in excess of the
amounts necessary to pay the redemption or purchase price of, and accrued
interest and Liquidated Damages, if any, on, all Notes to be redeemed or
purchased.

         If the Company complies with the provisions of the preceding paragraph,
on and after the redemption or purchase date, interest will cease to accrue on
the Notes or the portions of Notes called for redemption or purchase. If a Note
is redeemed or purchased on or after an interest record date but on or prior to
the related interest payment date, then any accrued and unpaid interest shall be
paid to the Person in whose name such Note was registered at the close of
business on such record date. If any Note called for redemption or purchase is
not so paid upon surrender for redemption or purchase because of the failure of
the Company to comply with the preceding paragraph, interest shall be paid on
the unpaid principal, from the redemption or purchase date until such principal
is paid, and to the extent lawful on any interest not paid on such unpaid
principal, in each case at the rate provided in the Notes and in Section 4.01
hereof.

Section 3.06 Notes Redeemed or Purchased in Part.

         Upon surrender of a Note that is redeemed or purchased in part, the
Company will issue and, upon receipt of an Authentication Order, the Trustee
will authenticate for the Holder at the expense of the Company a new Note equal
in principal amount to the unredeemed or unpurchased portion of the Note
surrendered.

Section 3.07 Optional Redemption.

         (a) At any time prior to August 1, 2006, the Company may on any one or
more occasions redeem a portion of the outstanding Notes, as long as at least
$600.0 million in aggregate principal amount of Notes (including any additional
Notes subsequently issued under this Indenture) remains outstanding after the
redemption, at a redemption price of 110.000% of the principal amount, plus
accrued and unpaid interest and Liquidated Damages, if any, to the redemption
date, with the net cash proceeds of one or more Equity Offerings (other than
Disqualified Stock); provided that the redemption occurs within 60 days of the
date of the closing of such Equity Offering.

         (b) Except pursuant to the preceding paragraph, the Notes will not be
redeemable at the Company's option prior to August 1, 2007.

         (c) On or after August 1, 2007, the Company may redeem all or a part of
the Notes upon not less than 30 nor more than 60 days' notice, at the redemption
prices (expressed as percentages of principal amount) set forth below plus
accrued and unpaid interest and Liquidated Damages, if any, on the Notes
redeemed, to the applicable redemption date, if redeemed during the twelve-month
period beginning on August 1 of the years indicated below, subject to the rights
of Holders of the Notes on the relevant record date to receive interest on the
relevant interest payment date:

                                       39
<PAGE>

<Table>
<Caption>
        Year                                                                                  Percentage
        ----                                                                                  ----------
<S>                                                                                           <C>
        2007.............................................................................       105.000%
        2008.............................................................................       102.500%
        2009 and thereafter..............................................................       100.000%
</Table>

         (d) Unless the Company defaults in the payment of the redemption price,
interest will cease to accrue on the Notes or portions thereof called for
redemption on the applicable redemption date.

Section 3.08 Escrow of Proceeds; Special Mandatory Redemption.

         (a) Except as set forth in clause (b) of this Section 3.08 or under
Sections 4.10 and 4.15 hereof, the Company shall not be required to make
mandatory redemption or sinking fund payments with respect to the Notes.

         (b) In accordance with the terms and conditions of the Escrow
Agreement, and using the Deposit, Escrow Corp. shall redeem all and not less
than all of the Initial Notes on November 8, 2003, or such earlier date as
Escrow Corp. shall elect (the "Special Mandatory Redemption Date"), if the
Escrow Corp. Merger has not occurred on or prior to the Special Mandatory
Redemption Date, at a redemption price equal to 100% of the aggregate principal
amount of the Notes, plus accrued and unpaid interest thereon through and
including the Special Mandatory Redemption Date or through November 6, 2003 in
the event the Special Mandatory Redemption Date is November 7 or November 8,
2003. Upon the closing of the Escrow Corp. Merger on or before the Special
Mandatory Redemption Date, the foregoing provisions of this Section 3.08(b)
shall be null and void. The Special Mandatory Redemption Date shall be no more
than two days after the date on which the parties to the Escrow Agreement decide
to terminate the Escrow Agreement.

Section 3.09 Offer to Purchase by Application of Excess Proceeds.

         In the event that, pursuant to Section 4.10 hereof, the Company is
required to commence an offer to all Holders to purchase Notes (an "Asset Sale
Offer"), it will follow the procedures specified below.

         The Asset Sale Offer shall be made to all Holders and all holders of
other Indebtedness that is pari passu with the Notes containing provisions
similar to those set forth in this Indenture with respect to offers to purchase
or redeem with the proceeds of sales and assets. The Asset Sale Offer will
remain open for a period of at least 20 Business Days following its commencement
and not more than 30 Business Days, except to the extent that a longer period is
required by applicable law (the "Offer Period"). No later than three Business
Days after the termination of the Offer Period (the "Purchase Date"), the
Company will apply all Excess Proceeds (the "Offer Amount") to the purchase of
Notes and such other pari passu Indebtedness (on a pro rata basis, if
applicable) or, if less than the Offer Amount has been tendered, all Notes and
other Indebtedness tendered in response to the Asset Sale Offer. Payment for any
Notes so purchased will be made in the same manner as interest payments are
made.

         If the Purchase Date is on or after an interest record date and on or
before the related interest payment date, any accrued and unpaid interest, and
Liquidated Damages, if any, will be paid to the Person in whose name a Note is
registered at the close of business on such record date, and no additional
interest will be payable to Holders who tender Notes pursuant to the Asset Sale
Offer.

         Upon the commencement of an Asset Sale Offer, the Company will send, by
first class mail, a notice to the Trustee and each of the Holders, with a copy
to the Trustee. The notice will contain all instructions and materials necessary
to enable such Holders to tender Notes pursuant to the Asset Sale Offer. The
notice, which will govern the terms of the Asset Sale Offer, will state:

                                       40
<PAGE>

                  (1) that the Asset Sale Offer is being made pursuant to this
         Section 3.09 and Section 4.10 hereof and the length of time the Asset
         Sale Offer will remain open;

                  (2) the Offer Amount, the purchase price and the Purchase
         Date;

                  (3) that any Note not tendered or accepted for payment will
         continue to accrue interest;

                  (4) that, unless the Company defaults in making such payment,
         any Note accepted for payment pursuant to the Asset Sale Offer will
         cease to accrue interest after the Purchase Date;

                  (5) that Holders electing to have a Note purchased pursuant to
         an Asset Sale Offer may elect to have Notes purchased in integral
         multiples of $1,000 only;

                  (6) that Holders electing to have a Note purchased pursuant to
         any Asset Sale Offer will be required to surrender the Note, with the
         form entitled "Option of Holder to Elect Purchase" on the reverse of
         the Note completed, or transfer by book-entry transfer, to the Company,
         a Depositary, if appointed by the Company, or a Paying Agent at the
         address specified in the notice at least three days before the Purchase
         Date;

                  (7) that Holders will be entitled to withdraw their election
         if the Company, the Depositary or the Paying Agent, as the case may be,
         receives, not later than the expiration of the Offer Period, a
         telegram, telex, facsimile transmission or letter setting forth the
         name of the Holder, the principal amount of the Note the Holder
         delivered for purchase and a statement that such Holder is withdrawing
         his election to have such Note purchased;

                  (8) that, if the aggregate principal amount of Notes and other
         pari passu Indebtedness surrendered by Holders exceeds the Offer
         Amount, the Company will select the Notes and other pari passu
         Indebtedness to be purchased on a pro rata basis based on the principal
         amount of Notes and such other pari passu Indebtedness surrendered
         (with such adjustments as may be deemed appropriate by the Company so
         that only Notes in denominations of $1,000, or integral multiples
         thereof, will be purchased); and

                  (9) that Holders whose Notes were purchased only in part will
         be issued new Notes equal in principal amount to the unpurchased
         portion of the Notes surrendered (or transferred by book-entry
         transfer).

         On or before the Purchase Date, the Company will, to the extent lawful,
accept for payment, on a pro rata basis to the extent necessary, the Offer
Amount of Notes or portions thereof tendered pursuant to the Asset Sale Offer,
or if less than the Offer Amount has been tendered, all Notes tendered, and will
deliver to the Trustee an Officers' Certificate stating that such Notes or
portions thereof were accepted for payment by the Company in accordance with the
terms of this Section 3.09. The Company, the Depositary or the Paying Agent, as
the case may be, will promptly (but in any case not later than five days after
the Purchase Date) mail or deliver to each tendering Holder an amount equal to
the purchase price of the Notes tendered by such Holder and accepted by the
Company for purchase, and the Company will promptly issue a new Note, and the
Trustee, upon written request from the Company will authenticate and mail or
deliver such new Note to such Holder, in a principal amount equal to any
unpurchased portion of the Note surrendered. Any Note not so accepted shall be
promptly mailed or delivered by the Company to the Holder thereof. The Company
will publicly announce the results of the Asset Sale Offer on the Purchase Date.

                                       41
<PAGE>

         Other than as specifically provided in this Section 3.09, any purchase
pursuant to this Section 3.09 shall be made pursuant to the provisions of
Sections 3.01 through 3.06 hereof.

                                   ARTICLE 4.
                                    COVENANTS

Section 4.01 Payment of Notes.

         The Company will pay or cause to be paid the principal of, premium, if
any, and interest and Liquidated Damages, if any, on the Notes on the dates and
in the manner provided in the Notes. Principal, premium, if any, and interest
and Liquidated Damages, if any will be considered paid on the date due if the
Paying Agent, if other than the Company or a Subsidiary thereof, holds as of
10:00 a.m. Eastern Time on the due date money deposited by the Company in
immediately available funds and designated for and sufficient to pay all
principal, premium, if any, and interest then due. The Company will pay all
Liquidated Damages, if any, in the same manner on the dates and in the amounts
set forth in the Registration Rights Agreement.

         The Company will pay interest (including post-petition interest in any
proceeding under any Bankruptcy Law) on overdue principal at the rate equal to
1% per annum in excess of the then applicable interest rate on the Notes to the
extent lawful; it will pay interest (including post-petition interest in any
proceeding under any Bankruptcy Law) on overdue installments of interest and
Liquidated Damages (without regard to any applicable grace period) at the same
rate to the extent lawful.

Section 4.02 Maintenance of Office or Agency.

         The Company will maintain in the Borough of Manhattan, the City of New
York, an office or agency (which may be an office of the Trustee or an affiliate
of the Trustee, Registrar or co-registrar) where Notes may be surrendered for
registration of transfer or for exchange and where notices and demands to or
upon the Company in respect of the Notes and this Indenture may be served. The
Company will give prompt written notice to the Trustee of the location, and any
change in the location, of such office or agency. If at any time the Company
fails to maintain any such required office or agency or fails to furnish the
Trustee with the address thereof, such presentations, surrenders, notices and
demands may be made or served at the Corporate Trust Office of the Trustee.

         The Company may also from time to time designate one or more other
offices or agencies where the Notes may be presented or surrendered for any or
all such purposes and may from time to time rescind such designations; provided,
however, that no such designation or rescission will in any manner relieve the
Company of its obligation to maintain an office or agency in the Borough of
Manhattan, the City of New York for such purposes. The Company will give prompt
written notice to the Trustee of any such designation or rescission and of any
change in the location of any such other office or agency.

         The Company hereby designates the Corporate Trust Office of the Trustee
as one such office or agency of the Company in accordance with Section 2.03
hereof.

Section 4.03 Reports.

         (a) Whether or not required by the rules and regulations of the SEC, so
long as any Notes are outstanding, the Company will furnish to the Holders of
Notes, within the time periods specified in the SEC's rules and regulations:

                                       42
<PAGE>

                  (1) all quarterly and annual financial information that would
         be required to be contained in a filing with the SEC on Forms 10-Q and
         10-K if the Company were required to file such forms, including a
         "Management's Discussion and Analysis of Financial Condition and
         Results of Operations" and, with respect to the annual information
         only, a report thereon by the Company's certified independent
         accountants; and

                  (2) all current reports that would be required to be filed
         with the SEC on Form 8-K if the Company were required to file such
         reports.

         The Company shall prepare all such reports in accordance with all of
the rules and regulations applicable to such reports, in all material respects.
The Company's annual report on Form 10-K shall include a report on the Company's
consolidated financial statements by the Company's certified independent
accountants; provided, that certifications required under the Sarbanes-Oxley Act
and any corresponding rules of the SEC shall be required to be provided only to
the extent required of so-called "voluntary filers."

         In addition, following the consummation of the Exchange Offer
contemplated by the Registration Rights Agreement, whether or not required by
the SEC, the Company shall file a copy of all of the information and reports
referred to in clauses (1) and (2) above with the SEC for public availability
within the time periods specified in the SEC's rules and regulations (unless the
SEC will not accept such a filing) and make such information available to
securities analysts and prospective investors upon request. The Company shall at
all times comply with TIA Section 314(a).

         If the Company has designates any of its Subsidiaries as Unrestricted
Subsidiaries, then the quarterly and annual financial information required by
the preceding paragraphs of this Section 4.03 shall include a reasonably
detailed presentation, either on the face of the financial statements or in the
footnotes thereto, and in Management's Discussion and Analysis of Financial
Condition and Results of Operations, of the financial condition and results of
operations of the Company and its Restricted Subsidiaries separate from the
financial condition and results of operations of the Unrestricted Subsidiaries
of the Company.

         (b) For so long as any Notes remain outstanding, the Company and the
Guarantors shall furnish to the Holders and to securities analysts and
prospective investors, upon their request, the information required to be
delivered pursuant to Rule 144A(d)(4) under the Securities Act.

Section 4.04 Compliance Certificate.

         (a) The Company and each Guarantor (to the extent that such Guarantor
is so required under the TIA) shall deliver to the Trustee, within 90 days after
the end of each fiscal year, an Officers' Certificate stating that a review of
the activities of the Company and its Subsidiaries during the preceding fiscal
year has been made under the supervision of the signing Officers with a view to
determining whether the Company has kept, observed, performed and fulfilled its
obligations under this Indenture, and further stating, as to each such Officer
signing such certificate, that to the best of his or her knowledge the Company
has kept, observed, performed and fulfilled each and every covenant contained in
this Indenture and is not in default in the performance or observance of any of
the terms, provisions and conditions of this Indenture (or, if a Default or
Event of Default has occurred, describing all such Defaults or Events of Default
of which he or she may have knowledge and what action the Company is taking or
proposes to take with respect thereto) and that to the best of his or her
knowledge no event has occurred and remains in existence by reason of which
payments on account of the principal of or interest, if any, on the Notes is
prohibited or if such event has occurred, a description of the event and what
action the Company is taking or proposes to take with respect thereto.

                                       43
<PAGE>

         (b) So long as not contrary to the then current recommendations of the
American Institute of Certified Public Accountants, the year-end financial
statements delivered pursuant to Section 4.03(a) above shall be accompanied by a
written statement of the Company's independent public accountants (who shall be
a firm of established national reputation) that in making the examination
necessary for certification of such financial statements, nothing has come to
their attention that would lead them to believe that the Company has violated
any provisions of Article 4 or Article 5 hereof or, if any such violation has
occurred, specifying the nature and period of existence thereof, it being
understood that such accountants shall not be liable directly or indirectly to
any Person for any failure to obtain knowledge of any such violation.

         (c) So long as any of the Notes are outstanding, the Company shall
deliver to the Trustee, forthwith upon any Officer becoming aware of any Default
or Event of Default, an Officers' Certificate specifying such Default or Event
of Default and what action the Company is taking or proposes to take with
respect thereto.

Section 4.05 Taxes.

         The Company shall pay, and shall cause each of its Subsidiaries to pay,
prior to delinquency, all material taxes, assessments, and governmental levies
except such as are contested in good faith and by appropriate proceedings or
where the failure to effect such payment is not adverse in any material respect
to the Holders of the Notes.

Section 4.06 Stay, Extension and Usury Laws.

         The Company and each of the Guarantors covenants (to the extent that it
may lawfully do so) that it will not at any time insist upon, plead, or in any
manner whatsoever claim or take the benefit or advantage of, any stay, extension
or usury law wherever enacted, now or at any time hereafter in force, that may
affect the covenants or the performance of this Indenture; and the Company and
each of the Guarantors (to the extent that it may lawfully do so) hereby
expressly waives all benefit or advantage of any such law, and covenants that it
will not, by resort to any such law, hinder, delay or impede the execution of
any power herein granted to the Trustee, but will suffer and permit the
execution of every such power as though no such law has been enacted.

Section 4.07      Limitation on Restricted Payments.

         The Company shall maintain an account (the "Restricted Payments
Account") to be calculated as set forth below and shall cause the value of the
Restricted Payments Account as so calculated to at all times exceed $1.00 except
as provided below. The Restricted Payments Account shall be an internal account
of the Company for computational purposes in proving compliance with this
Section 4.07 and shall not be required to be funded in cash or otherwise.

         The Restricted Payments Account shall initially be established on the
date of this Indenture at $15.0 million and will thereafter be increased by:

                  (1) an amount equal to the Company's Consolidated Cash Flow,
         less interest income, from the first day of the Company's first full
         fiscal quarter which commences after the consummation of the
         Reorganization, to the end of the Company's most recently ended full
         fiscal quarter for which internal financial statements are available,
         taken as a single accounting period, less the product of 1.35 times the
         sum of (a) the Company's Consolidated Interest Expense net of interest
         income and (b) the Company's Capital Expenditures with both (a) and (b)
         calculated from the first day of the Company's first full fiscal
         quarter which commences after the Reorganization,

                                       44
<PAGE>

         to the end of the Company's most recently ended full fiscal quarter for
         which internal financial statements are available, taken as a single
         accounting period (provided that if the resulting difference is
         negative, the Restricted Payments Account will be reduced by the
         absolute value of such difference), plus

                  (2) an amount equal to the net cash proceeds received by the
         Company from the sale of Equity Interests after the date of the
         consummation of the Reorganization (other than (a) sales of
         Disqualified Stock and (b) Equity Interests sold to any of the
         Company's Subsidiaries) or from the issuance or sale of convertible or
         exchangeable Disqualified Stock or convertible or exchangeable debt
         securities of the Company that have been converted into or exchanged
         for such Equity Interests (other than Equity Interests (or Disqualified
         Stock or debt securities) sold to a Subsidiary), plus

                  (3) to the extent that any Restricted Investment that was made
         after the date of this Indenture is sold or otherwise liquidated or
         repaid, the lesser of (a) the cash return of capital (or the Fair
         Market Value of any non-cash return of capital) and (b) the initial
         amount of such Restricted Investment.

         To the extent that the Company or any of its Restricted Subsidiaries,
         directly or indirectly:

                  (1) declares or pays any dividend or makes any other payment
         or distribution on account of the Company's Equity Interests
         (including, without limitation, any payment in connection with any
         merger or consolidation involving the Company) or to the direct or
         indirect holders of the Company's Equity Interests in their capacity as
         such (other than dividends or distributions payable in Equity Interests
         (other than Disqualified Stock) of the Company or to the Company);

                  (2) purchases, redeems or otherwise acquires or retires for
         value (including, without limitation, in connection with any merger or
         consolidation involving the Company) any Equity Interests of the
         Company or any direct or indirect parent of the Company;

                  (3) makes any payment on or with respect to, or purchases,
         redeems, defeases or otherwise acquires or retires for value any
         Indebtedness of the Company or any Guarantor that is contractually
         subordinated to the Notes or any Note Guarantee (excluding any
         intercompany Indebtedness between or among the Company and any of its
         Restricted Subsidiaries), except a payment of interest or principal at
         the Stated Maturity thereof; or

                  (4) makes any Restricted Investment

(all such payments and other actions set forth in these clauses (1) through (4)
above being collectively referred to as "Restricted Payments"), the Restricted
Payments Account shall be reduced by the amount of such Restricted Payment
except in the case of Restricted Payments of the type described in clauses (2),
(3), (4), (6), and (8) of the third succeeding paragraph.

         In addition, the Company shall maintain its Debt to Cash Flow Ratio as
set forth in the first paragraph of Section 4.09 hereof of no greater than 5.0
to 1.

         Notwithstanding the foregoing, except as set forth below, the Company
agrees that it will not make, and shall not permit any Restricted Subsidiary to
make, any Restricted Payment if:

                  (1) any Default or Event of Default has occurred and is
         continuing or would occur as a consequence of such Restricted Payment;
         or

                                       45
<PAGE>

                  (2) the Company would not, at the time of such Restricted
         Payment and after giving pro forma effect thereto as if such Restricted
         Payment had been made at the beginning of the applicable four-quarter
         period, have been permitted to incur at least $1.00 of additional
         Indebtedness pursuant to the Debt to Cash Flow Ratio test set forth in
         the first paragraph of Section 4.09 hereof; or

                  (3) immediately prior to such Restricted Payment and after
         giving pro forma effect thereto the Restricted Payments Account is or
         would be less than $1.00.

         So long as no Default or Event of Default has occurred and is
continuing or would be caused thereby, the foregoing paragraph shall not
prohibit:

                  (1) the payment of any dividend within 60 days after the date
         of declaration of the dividend, if at the date of declaration the
         dividend payment would have complied with the provisions of this
         Indenture provided that the amount of such dividend reduces the
         Restricted Payments Account;

                  (2) the making of any Restricted Payment in exchange for, or
         out of the net cash proceeds of the substantially concurrent sale
         (other than to a Subsidiary of the Company) of, Equity Interests of the
         Company (other than Disqualified Stock) or from the substantially
         concurrent contribution of common equity capital to the Company;
         provided that the amount of any such net cash proceeds that are
         utilized for any such Restricted Payment will be excluded from clause
         (2) of the second paragraph of this Section 4.07;

                  (3) the defeasance, redemption, repurchase or other
         acquisition of Indebtedness of the Company or any Guarantor that is
         contractually subordinated to the Notes or to any Note Guarantee with
         the net cash proceeds from a substantially concurrent incurrence of
         Permitted Refinancing Indebtedness;

                  (4) the payment of any dividend (or, in the case of any
         partnership or limited liability company, any similar distribution) by
         a Restricted Subsidiary of the Company to the holders of its Equity
         Interests on a pro rata basis;

                  (5) the repurchase, redemption or other acquisition or
         retirement for value of any Equity Interests of the Company or any
         Restricted Subsidiary of the Company or any direct or indirect parent
         of the Company of a Restricted Subsidiary held by any current or former
         officer, director or employee of the Company or any of its Restricted
         Subsidiaries or any direct or indirect parent of the Company of a
         Restricted Subsidiary pursuant to any equity subscription agreement,
         stock option agreement, shareholders' agreement or similar agreement;
         provided that the aggregate price paid for all such repurchased,
         redeemed, acquired or retired Equity Interests may not exceed $3.0
         million in any twelve-month period and provided that such transaction
         reduces the Restricted Payments Account in the amount of such
         repurchase, redemption or other acquisition or retirement;

                  (6) the repurchase of Equity Interests deemed to occur upon
         the exercise of stock options to the extent such Equity Interests
         represent a portion of the exercise price of those stock options;

                  (7) the declaration and payment of regularly scheduled or
         accrued dividends to holders of any class or series of Disqualified
         Stock of the Company or any Restricted Subsidiary of the Company issued
         on or after the date of this Indenture in accordance with the Debt to
         Cash Flow

                                       46
<PAGE>

         Ratio test described in Section 4.09 hereof, provided that the amount
         of such dividend reduces the Restricted Payments Account;

                  (8) payments in connection with a Tax-Sharing Agreement; and

                  (9) other Restricted Payments from and after the date of this
         Indenture not to exceed $20.0 million in the aggregate.

         The amount of all Restricted Payments (other than cash) shall be the
Fair Market Value on the date of the Restricted Payment of the asset(s) or
securities proposed to be transferred or issued by the Company or such
Restricted Subsidiary, as the case may be, pursuant to the Restricted Payment.
The Fair Market Value of any assets or securities that are required to be valued
by this Section 4.07 shall be determined by the Board of Directors whose
resolution with respect thereto shall be delivered to the Trustee. The Board of
Directors' determination must be based upon an opinion or appraisal issued by an
accounting, appraisal or investment banking firm of national standing if the
Fair Market Value exceeds $25.0 million.

         Notwithstanding the foregoing, it shall not constitute a breach of or
failure to comply with this Section 4.07 if the Restricted Payments Account
fails to exceed $1.00 if such failure is directly attributable to a reduction
under clause (1) of the second paragraph of this Section 4.07 or if the Company
shall have a Debt to Cash Flow Ratio as set forth in the first paragraph of
Section 4.09 hereof of greater than 5.0 to 1.

Section 4.08 Dividend and Other Payment Restrictions Affecting Subsidiaries.

         The Company shall not, and shall not permit any of its Restricted
Subsidiaries to, directly or indirectly, create or permit to exist or become
effective any consensual encumbrance or restriction on the ability of any
Restricted Subsidiary to:

                  (1) pay dividends or make any other distributions on its
         Capital Stock to the Company or any of its Restricted Subsidiaries, or
         with respect to any other interest or participation in, or measured by,
         its profits, or pay any indebtedness owed to the Company or any of its
         Restricted Subsidiaries;

                  (2) make loans or advances to the Company or any of its
         Restricted Subsidiaries; or

                  (3) transfer any of its properties or assets to the Company or
         any of its Restricted Subsidiaries.

         However, the preceding restrictions will not apply to encumbrances or
restrictions existing under or by reason of:

                  (1) agreements governing Existing Indebtedness and Credit
         Facilities as in effect on the date of the Reorganization and any
         amendments, modifications, restatements, renewals, increases,
         supplements, refundings, replacements or refinancings of those
         agreements; provided that the amendments, modifications, restatements,
         renewals, increases, supplements, refundings, replacement or
         refinancings are no more restrictive, taken as a whole, with respect to
         such dividend and other payment restrictions than those contained in
         those agreements on the date of this Indenture;

                  (2) this Indenture, the Notes and the Note Guarantees;

                                       47
<PAGE>

                  (3) applicable law, rule, regulation or order;

                  (4) any instrument governing Indebtedness or Capital Stock of
         a Person acquired by the Company or any of its Restricted Subsidiaries
         as in effect at the time of such acquisition (except to the extent such
         Indebtedness or Capital Stock was incurred in connection with or in
         contemplation of such acquisition), which encumbrance or restriction is
         not applicable to any Person, or the properties or assets of any
         Person, other than the Person, or the property or assets of the Person,
         so acquired and any refinancings thereof; provided that, in the case of
         Indebtedness, such Indebtedness was permitted by the terms of this
         Indenture to be incurred;

                  (5) customary non-assignment provisions in contracts and
         licenses entered into in the ordinary course of business;

                  (6) purchase money obligations for property acquired in the
         ordinary course of business and Capital Lease Obligations that impose
         restrictions on the property purchased or leased of the nature
         described in clause (3) of the preceding paragraph;

                  (7) any agreement for the sale or other disposition of a
         Restricted Subsidiary that restricts distributions by that Restricted
         Subsidiary pending the sale or other disposition;

                  (8) Permitted Refinancing Indebtedness; provided that the
         restrictions contained in the agreements governing such Permitted
         Refinancing Indebtedness are not materially more restrictive, taken as
         a whole, than those contained in the agreements governing the
         Indebtedness being refinanced;

                  (9) Liens permitted to be incurred under the provisions of
         Section 4.12 hereof that limit the right of the debtor to dispose of
         the assets subject to such Liens;

                  (10) provisions limiting the disposition or distribution of
         assets or property in joint venture agreements, asset sale agreements,
         sale-leaseback agreements, stock sale agreements and other similar
         agreements entered into with the approval of the Company's Board of
         Directors, which limitation is applicable only to the assets that are
         the subject of such agreements; and

                  (11) restrictions on cash or other deposits or net worth
         imposed by customers under contracts entered into in the ordinary
         course of business.

Section 4.09 Incurrence of Indebtedness and Issuance of Preferred Stock.

         The Company shall not, and shall not permit any of its Restricted
Subsidiaries to, directly or indirectly, create, incur, issue, assume, guarantee
or otherwise become directly or indirectly liable, contingently or otherwise,
with respect to (collectively, "incur") any Indebtedness (including Acquired
Debt), and the Company shall not issue any Disqualified Stock and shall not
permit any of its Restricted Subsidiaries to issue any shares of preferred
stock; provided, however, that the Company may incur Indebtedness (including
Acquired Debt) or issue Disqualified Stock and the Company's Restricted
Subsidiaries may incur Indebtedness (including Acquired Debt) or issue preferred
stock, if the Company's Debt to Cash Flow Ratio at the time of incurrence of
such Indebtedness or the issuance of such Disqualified Stock or preferred stock,
after giving pro forma effect to such incurrence or issuance as of such date and
to the use of proceeds therefrom as if the same had occurred at the beginning of
the most recently ended four full fiscal quarter period of the Company for which
internal financial statements are available, would have been no greater than 5.0
to 1.

                                       48
<PAGE>

         The first paragraph of this Section 4.09 will not prohibit the
incurrence of any of the following items of Indebtedness (collectively,
"Permitted Debt"):

                  (1) the incurrence by the Company and its Restricted
         Subsidiaries of additional Indebtedness and letters of credit under
         Credit Facilities in an aggregate principal amount at any one time
         outstanding under this clause (1) (with letters of credit being deemed
         to have a principal amount equal to the maximum potential liability of
         the Company and its Subsidiaries thereunder) not to exceed $200.0
         million less the aggregate amount of all Net Proceeds of Asset Sales
         applied by the Company or any of its Restricted Subsidiaries since the
         date of this Indenture to repay any term Indebtedness under a Credit
         Facility or to repay any revolving credit Indebtedness under a Credit
         Facility and effect a corresponding permanent commitment reduction
         thereunder pursuant to Section 4.10 hereof;

                  (2) the incurrence by the Company and its Restricted
         Subsidiaries of the Existing Indebtedness;

                  (3) the incurrence by the Company and the Guarantors of
         Indebtedness represented by the Notes and the related Note Guarantees
         to be issued on the date of this Indenture and the Exchange Notes and
         the related Note Guarantees to be issued pursuant to the Registration
         Rights Agreement;

                  (4) the incurrence by the Company or any of its Restricted
         Subsidiaries of Indebtedness represented by Capital Lease Obligations,
         mortgage financings or purchase money obligations, in each case,
         incurred for the purpose of financing all or any part of the purchase
         price or cost of cellular wireless licenses, design, construction,
         installation or improvement of property, plant or equipment used in the
         business of the Company or any of its Restricted Subsidiaries, in an
         aggregate principal amount, including all Permitted Refinancing
         Indebtedness incurred to refund, refinance, replace, defease or
         discharge any Indebtedness incurred pursuant to this clause (4), not to
         exceed $25.0 million at any time outstanding;

                  (5) the incurrence by the Company or any of its Restricted
         Subsidiaries of Permitted Refinancing Indebtedness in exchange for, or
         the net proceeds of which are used to refund, refinance, replace,
         defease or discharge Indebtedness (other than intercompany
         Indebtedness) that was permitted by this Indenture to be incurred under
         the first paragraph of this Section 4.09 or clauses (2), (3), (4), (5)
         or (12) of this paragraph;

                  (6) the incurrence by the Company or any of its Restricted
         Subsidiaries of intercompany Indebtedness between or among the Company
         and any of its Restricted Subsidiaries; provided, however, that:

                           (a) if the Company or any Guarantor is the obligor on
         such Indebtedness and the payee is not the Company or a Guarantor, such
         Indebtedness must be expressly subordinated to the prior payment in
         full in cash of all Obligations then due with respect to the Notes, in
         the case of the Company, or the Note Guarantee, in the case of a
         Guarantor; and

                           (b) (i) any subsequent issuance or transfer of Equity
         Interests that results in any such Indebtedness being held by a Person
         other than the Company or a Restricted Subsidiary of the Company and
         (ii) any sale or other transfer of any such Indebtedness to a Person
         that is not either the Company or a Restricted Subsidiary of the
         Company;

                                       49
<PAGE>

        will be deemed, in each case, to constitute an incurrence of such
        Indebtedness by the Company or such Restricted Subsidiary, as the case
        may be, that was not permitted by this clause (6);

                  (7) the issuance by any of the Company's Restricted
         Subsidiaries to the Company or to any of its Restricted Subsidiaries of
         shares of preferred stock; provided, however, that:

                           (a) any subsequent issuance or transfer of Equity
         Interests that results in any such preferred stock being held by a
         Person other than the Company or a Restricted Subsidiary of the
         Company; and

                           (b) any sale or other transfer of any such preferred
         stock to a Person that is not either the Company or a Restricted
         Subsidiary of the Company;

         will be deemed, in each case, to constitute an issuance of such
         preferred stock by such Restricted Subsidiary that was not permitted by
         this clause (7);

                  (8) the incurrence by the Company or any of its Restricted
         Subsidiaries of Hedging Obligations in the ordinary course of business;

                  (9) the guarantee by the Company or any of the Guarantors of
         Indebtedness of the Company or a Restricted Subsidiary of the Company
         that was permitted to be incurred by another provision of this Section
         4.09; provided that if the Indebtedness being guaranteed is
         subordinated to or pari passu with the Notes, then the guarantee shall
         be subordinated to the same extent as the Indebtedness guaranteed;

                  (10) the incurrence by the Company or any of its Restricted
         Subsidiaries of Indebtedness in respect of workers' compensation
         claims, self-insurance obligations, bankers' acceptances, performance
         and surety bonds in the ordinary course of business;

                  (11) the incurrence by the Company or any of its Restricted
         Subsidiaries of Indebtedness arising from the honoring by a bank or
         other financial institution of a check, draft or similar instrument
         inadvertently drawn against insufficient funds, so long as such
         Indebtedness is covered within five business days; and

                  (12) the incurrence by the Company or any of its Restricted
         Subsidiaries of additional Indebtedness in an aggregate principal
         amount (or accreted value, as applicable) at any time outstanding,
         including all Permitted Refinancing Indebtedness incurred to refund,
         refinance, replace, defease or discharge any Indebtedness incurred
         pursuant to this clause (12), not to exceed $50.0 million.

         The Company will not incur, and will not permit any Guarantor to incur,
any Indebtedness (including Permitted Debt) that is contractually subordinated
in right of payment to any other Indebtedness of the Company or such Guarantor
unless such Indebtedness is also contractually subordinated in right of payment
to the Notes and the applicable Note Guarantee on substantially identical terms;
provided, however, that no Indebtedness will be deemed to be contractually
subordinated in right of payment to any other Indebtedness of the Company solely
by virtue of being unsecured or by virtue of being secured on a first or junior
Lien basis.

         For purposes of determining compliance with the provisions of this
Section 4.09, in the event that an item of proposed Indebtedness meets the
criteria of more than one of the categories of Permitted Debt described in
clauses (1) through (12) above, or is entitled to be incurred pursuant to the
first paragraph of

                                       50
<PAGE>

this Section 4.09, the Company shall be permitted to classify such item of
Indebtedness on the date of its incurrence, or later reclassify all or a portion
of such item of Indebtedness, in any manner that complies with the provisions of
this Section 4.09. Indebtedness, if any, under Credit Facilities of the Company
outstanding on the date on which Notes are first issued and authenticated under
this Indenture will initially be deemed to have been incurred on such date in
reliance on the exception provided by clause (1) of the definition of Permitted
Debt. The accrual of interest, the accretion or amortization of original issue
discount, the payment of interest on any Indebtedness in the form of additional
Indebtedness with the same terms, and the payment of dividends on Disqualified
Stock in the form of additional shares of the same class of Disqualified Stock
will not be deemed to be an incurrence of Indebtedness or an issuance of
Disqualified Stock for purposes of this Section 4.09; provided, in each such
case, that the amount thereof is included in Fixed Charges of the Company as
accrued. Notwithstanding any other provision of this Section 4.09, the maximum
amount of Indebtedness that the Company or any Restricted Subsidiary may incur
pursuant to this Section 4.09 shall not be deemed to be exceeded solely as a
result of fluctuations in exchange rates or currency values.

         The amount of any Indebtedness outstanding as of any date will be:

                  (1) the accreted value of the Indebtedness, in the case of any
         Indebtedness issued with original issue discount;

                  (2) the outstanding and unpaid principal amount of the
         Indebtedness, in the case of any other Indebtedness; and

                  (3) in respect of Indebtedness of another Person secured by a
         Lien on the assets of the specified Person, the lesser of:

                           (a) the Fair Market Value of such asset at the date
         of determination, and

                           (b) the amount of the Indebtedness of the other
         Person.

Section 4.10 Asset Sales.

         The Company will not, and will not permit any of its Restricted
Subsidiaries to, consummate an Asset Sale unless:

                  (1) the Company (or the Restricted Subsidiary, as the case may
         be) receives consideration at the time of the Asset Sale at least equal
         to the Fair Market Value of the assets or Equity Interests issued or
         sold or otherwise disposed of; and

                  (2) at least 75% of the consideration received in the Asset
         Sale by the Company or such Restricted Subsidiary is in the form of
         cash. For purposes of this provision, each of the following will be
         deemed to be cash:

                           (a) any liabilities, as shown on the Company's most
         recent consolidated balance sheet, of the Company or any Restricted
         Subsidiary (other than contingent liabilities and liabilities that are
         by their terms subordinated to the Notes or any Note Guarantee) that
         are assumed by the transferee of any such assets pursuant to a
         customary novation agreement that releases the Company or such
         Restricted Subsidiary from further liability;

                           (b) any securities, notes or other obligations
         received by the Company or any such Restricted Subsidiary from such
         transferee that are contemporaneously, subject to ordinary

                                       51

<PAGE>

         settlement periods, converted by the Company or such Restricted
         Subsidiary into cash, to the extent of the cash received in that
         conversion; and

                           (c) any stock or assets of the kind referred to in
         clauses (2) or (4) of the next paragraph of this Section 4.10.

         Within 360 days after the receipt of any Net Proceeds from an Asset
Sale, the Company (or the applicable Restricted Subsidiary, as the case may be)
may apply those Net Proceeds:

                  (1) to repay Indebtedness and other Obligations under Credit
         Facilities and, if the Indebtedness repaid is revolving credit
         Indebtedness, to correspondingly permanently reduce commitments with
         respect thereto;

                  (2) to acquire all or substantially all of the assets of, or
         any Capital Stock of, another Permitted Business, if, after giving
         effect to any such acquisition of Capital Stock, the Permitted Business
         is or becomes a Restricted Subsidiary of the Company or, if the
         Company, within 360 days after the receipt of any Net Proceeds from an
         Asset Sale enters into a written and binding agreement for such
         acquisition, the Company may apply those Net Proceeds toward such
         acquisition provided such acquisition is consummated within 18 months
         of such Asset Sale;

                  (3) to make a capital expenditure; or

                  (4) to acquire other assets that are not classified as current
         assets under GAAP and that are used or useful in a Permitted Business.

         Pending the final application of any Net Proceeds, the Company may
temporarily reduce revolving credit borrowings or otherwise invest the Net
Proceeds in any manner that is not prohibited by this Indenture.

         Any Net Proceeds from Asset Sales that are not applied or invested as
provided in the preceding paragraph will constitute "Excess Proceeds." When the
aggregate amount of Excess Proceeds exceeds $25.0 million, the Company will make
an Asset Sale Offer to all Holders of Notes and all holders of other
Indebtedness that is pari passu with the Notes containing provisions similar to
those set forth in this Indenture with respect to offers to purchase or redeem
with the proceeds of sales of assets to purchase the maximum principal amount of
Notes and such other pari passu Indebtedness that may be purchased out of the
Excess Proceeds. The offer price in any Asset Sale Offer will be equal to 100%
of principal amount plus accrued and unpaid interest and Liquidated Damages, if
any, to the date of purchase, and will be payable in cash. If any Excess
Proceeds remain after consummation of an Asset Sale Offer, the Company may use
those Excess Proceeds for any purpose not otherwise prohibited by this
Indenture. If the aggregate principal amount of Notes and other pari passu
Indebtedness tendered into such Asset Sale Offer exceeds the amount of Excess
Proceeds, the Trustee will select the Notes and such other pari passu
Indebtedness to be purchased on a pro rata basis. Upon completion of each Asset
Sale Offer, the amount of Excess Proceeds will be reset at zero.

         The Company will comply with the requirements of Rule 14e-1 under the
Exchange Act and any other securities laws and regulations thereunder to the
extent those laws and regulations are applicable in connection with each
repurchase of Notes pursuant to an Asset Sale Offer. To the extent that the
provisions of any securities laws or regulations conflict with the Asset Sale
provisions of this Indenture, the Company shall comply with the applicable
securities laws and regulations and will not be deemed to have breached its
obligations under the Asset Sale provisions of this Indenture by virtue of such
conflict.

                                       52
<PAGE>

         The Company's future agreements may contain prohibitions of certain
events, including events that would constitute a Change of Control or an Asset
Sale and including repurchases of or other prepayments in respect of the Notes.
The exercise by the Holders of Notes of their right to require the Company to
repurchase the Notes upon a Change of Control or an Asset Sale could cause a
default under these other agreements, even if the Change of Control or Asset
Sale itself does not, due to the financial effect of such repurchases on the
Company. In the event a Change of Control or Asset Sale occurs at a time when
the Company is prohibited from purchasing Notes, the Company could seek the
consent of its senior lenders to the purchase of Notes or could attempt to
refinance the borrowings that contain such prohibition. If the Company does not
obtain a consent or repay those borrowings, the Company will remain prohibited
from purchasing Notes. In that case, the Company's failure to purchase tendered
Notes would constitute an Event of Default under this Indenture which may, in
turn, constitute a default under our other future indebtedness. Finally, the
Company's ability to pay cash to the Holders of Notes upon a repurchase may be
limited by the Company's then existing financial resources.

Section 4.11 Transactions with Affiliates.

         The Company shall not, and shall not permit any of its Restricted
Subsidiaries to, make any payment to, or sell, lease, transfer or otherwise
dispose of any of its properties or assets to, or purchase any property or
assets from, or enter into or make or amend any transaction, contract,
agreement, understanding, loan, advance or guarantee with, or for the benefit
of, any Affiliate of the Company (each, an "Affiliate Transaction"), unless:

                  (1) the Affiliate Transaction is on terms that are no less
         favorable to the Company or the relevant Restricted Subsidiary than
         those that would have been obtained in a comparable transaction by the
         Company or such Restricted Subsidiary with an unrelated Person; and

                  (2) the Company delivers to the Trustee:

                           (a) with respect to any Affiliate Transaction or
         series of related Affiliate Transactions involving aggregate
         consideration in excess of $10.0 million, a resolution of the Board of
         Directors set forth in an Officers' Certificate certifying that such
         Affiliate Transaction complies with this Section 4.11 and that such
         Affiliate Transaction has been approved by a majority of the
         disinterested members of the Board of Directors; and

                           (b) with respect to any Affiliate Transaction or
         series of related Affiliate Transactions involving aggregate
         consideration in excess of $25.0 million, an opinion as to the fairness
         to the Company or such Restricted Subsidiary of such Affiliate
         Transaction from a financial point of view issued by an accounting,
         appraisal or investment banking firm of national standing.

         The following items will not be deemed to be Affiliate Transactions
and, therefore, will not be subject to the provisions of the prior paragraph:

                  (1) any employment agreement, employee benefit plan, officer
         and director indemnification agreement or any similar arrangement
         entered into by the Company or any of its Restricted Subsidiaries in
         the ordinary course of business;

                  (2) transactions between or among the Company and/or its
         Restricted Subsidiaries;

                                       53
<PAGE>

                  (3) transactions with a Person (other than an Unrestricted
         Subsidiary of the Company) that is an Affiliate of the Company solely
         because the Company owns, directly or through a Restricted Subsidiary,
         an Equity Interest in, or controls, such Person;

                  (4) payment of reasonable directors' fees;

                  (5) any issuance of Equity Interests (other than Disqualified
         Stock) of the Company to Affiliates of the Company;

                  (6) Restricted Payments that do not violate the provisions of
         this Indenture described in Section 4.07 hereof;

                  (7) loans or advances to employees in the ordinary course of
         business of the Company or a Restricted Subsidiary of the Company not
         to exceed $3.0 million in the aggregate at any one time outstanding;

                  (8) payments under a Tax-Sharing Agreement;

                  (9) payments under the Management Agreement;

                  (10) payments under the Equipment Lease and Switch Sharing
         Agreements;

                  (11) any merger between Escrow Corp. and ACC which is
         permitted by Section 5.01 hereof and transactions reasonably related or
         ancillary thereto as contemplated by the Out-of-Court Exchange Offer or
         the Pre-Packaged Plan, as the case may be; and

                  (12) any Restricted Payment or Permitted Investment permitted
         under the provisions described in Section 4.07 hereof.

Section 4.12 Liens.

         The Company will not, and will not permit any of its Restricted
Subsidiaries to, directly or indirectly, create, incur, assume or suffer to
exist any Lien of any kind on any asset now owned or hereafter acquired, except
Permitted Liens.

Section 4.13 Business Activities.

         The Company will not, and will not permit any of its Restricted
Subsidiaries to, engage in any business other than Permitted Businesses, except
to such extent as would not be material to the Company and its Restricted
Subsidiaries taken as a whole.

Section 4.14 Corporate Existence.

         Subject to Article 5 hereof, the Company shall do or cause to be done
all things necessary to preserve and keep in full force and effect:

                  (1) its corporate existence, and the corporate, partnership or
         other existence of each of its Subsidiaries, in accordance with the
         respective organizational documents (as the same may be amended from
         time to time) of the Company or any such Subsidiary; and

                                       54
<PAGE>

                  (2) the rights (charter and statutory), licenses and
         franchises of the Company and its Subsidiaries; provided, however, that
         the Company shall not be required to preserve any such right, license
         or franchise, or the corporate, partnership or other existence of any
         of its Subsidiaries, if the Board of Directors shall determine that the
         preservation thereof is no longer desirable in the conduct of the
         business of the Company and its Subsidiaries, taken as a whole, and
         that the loss thereof is not adverse in any material respect to the
         Holders of the Notes.

Section 4.15 Offer to Repurchase Upon Change of Control.

         If a Change of Control occurs, each Holder of Notes will have the right
to require the Company to repurchase all or any part (equal to $1,000 or an
integral multiple of $1,000) of that Holder's Notes pursuant to an offer (the
"Change of Control Offer") on the terms set forth in this Indenture. In the
Change of Control Offer, the Company will offer a payment in cash equal to 101%
of the aggregate principal amount of Notes repurchased plus accrued and unpaid
interest and Liquidated Damages, if any, on the Notes repurchased, to the date
of purchase, subject to the rights of Holders of Notes on the relevant record
date to receive interest due on the relevant interest payment date (the "Change
of Control Payment"). Within ten business days following any Change of Control,
the Company will mail a notice to each Holder describing the transaction or
transactions that constitute the Change of Control and offering to repurchase
Notes on the date specified in the notice, which date will be no earlier than 30
days and no later than 60 days from the date such notice is mailed (the "Change
of Control Payment Date"), pursuant to the procedures required by this Indenture
and described in such notice. The Company will comply with the requirements of
Rule 14e-1 under the Exchange Act and any other securities laws and regulations
thereunder to the extent those laws and regulations are applicable in connection
with the repurchase of the Notes as a result of a Change of Control. To the
extent that the provisions of any securities laws or regulations conflict with
the Change of Control provisions of this Indenture, the Company will comply with
the applicable securities laws and regulations and will not be deemed to have
breached its obligations under Section 3.09 hereof or this Section 4.15 by
virtue of such compliance.

         On the Change of Control Payment Date, the Company will, to the extent
lawful:

                  (1) accept for payment all Notes or portions of Notes properly
         tendered pursuant to the Change of Control Offer;

                  (2) deposit with the paying agent an amount equal to the
         Change of Control Payment in respect of all Notes or portions of Notes
         properly tendered; and

                  (3) deliver or cause to be delivered to the Trustee the Notes
         properly accepted together with an officers' certificate stating the
         aggregate principal amount of Notes or portions of Notes being
         purchased by the Company.

         The paying agent will promptly mail to each Holder of Notes properly
tendered the Change of Control Payment for such Notes, and the Trustee will
promptly authenticate and mail (or cause to be transferred by book entry) to
each Holder a new Note equal in principal amount to any unpurchased portion of
the Notes surrendered, if any; provided that each new Note will be in a
principal amount of $1,000 or an integral multiple of $1,000.

         The Company will publicly announce the results of the Change of Control
Offer on or as soon as practicable after the Change of Control Payment Date.

         The provisions described above that require the Company to make a
Change of Control Offer following a Change of Control will be applicable whether
or not any other provisions of this Indenture are

                                       55
<PAGE>

applicable. Except as described above with respect to a Change of Control, this
Indenture does not contain provisions that permit the Holders of the Notes to
require that the Company repurchase or redeem the Notes in the event of a
takeover, recapitalization or similar transaction.

         The Company will not be required to make a Change of Control Offer upon
a Change of Control if (1) a third party makes the Change of Control Offer in
the manner, at the times and otherwise in compliance with the requirements set
forth in this Indenture applicable to a Change of Control Offer made by the
Company and purchases all Notes properly tendered and not withdrawn under the
Change of Control Offer, or (2) notice of redemption has been given pursuant to
this Indenture as described above under Section 3.07 hereof unless and until
there is a default in payment of the applicable redemption price.

Section 4.16 Designation of Restricted and Unrestricted Subsidiaries.

         The Board of Directors may designate any Restricted Subsidiary to be an
Unrestricted Subsidiary if that designation would not cause a Default. If a
Restricted Subsidiary is designated as an Unrestricted Subsidiary, the aggregate
Fair Market Value of all outstanding Investments owned by the Company and its
Restricted Subsidiaries in the Subsidiary designated as Unrestricted will be
deemed to be an Investment made as of the time of the designation and will
reduce the amount available for Restricted Payments under Section 4.07 hereof or
under one or more clauses of the definition of Permitted Investments, as
determined by the Company. That designation will only be permitted if the
Investment would be permitted at that time and if the Restricted Subsidiary
otherwise meets the definition of an Unrestricted Subsidiary. The Board of
Directors may redesignate any Unrestricted Subsidiary to be a Restricted
Subsidiary if that redesignation would not cause a Default.

Section 4.17 Limitation on Issuances and Sales of Capital Stock of Wholly-Owned
Subsidiaries.

         The Company will not, and will not permit any of its Restricted
Subsidiaries to, transfer, convey, sell, lease or otherwise dispose of any
Equity Interests in any Wholly-Owned Restricted Subsidiary of the Company to any
Person (other than the Company or a Wholly-Owned Subsidiary of the Company),
unless:

                  (1) such transfer, conveyance, sale, lease or other
         disposition is of all the Equity Interests in such Wholly-Owned
         Restricted Subsidiary; and

                  (2) the Net Proceeds from such transfer, conveyance, sale,
         lease or other disposition are applied in accordance with Section 4.10
         hereof.

         In addition, the Company will not permit any Wholly-Owned Restricted
Subsidiary of the Company to issue any of its Equity Interests (other than, if
necessary, shares of its Capital Stock constituting directors' qualifying
shares) to any Person other than to the Company or a Wholly-Owned Restricted
Subsidiary of the Company.

Section 4.18 Additional Note Guarantees.

         If the Company or any of its Restricted Subsidiaries acquires or
creates another Domestic Subsidiary after the date of this Indenture, then the
Company will cause that newly acquired or created Domestic Subsidiary to execute
a Note Guarantee pursuant to a supplemental indenture in form and substance
satisfactory to the Trustee and deliver an Opinion of Counsel to the Trustee
within ten Business Days of the date on which it was acquired or created to the
effect that such supplemental indenture has

                                       56
<PAGE>

been duly authorized, executed and delivered by that Domestic Subsidiary and
constitutes a valid and binding agreement of that Domestic Subsidiary,
enforceable in accordance with its terms (subject to customary exceptions). The
form of such Note Guarantee is attached as Exhibit E hereto.

                                   ARTICLE 5.
                                   SUCCESSORS

Section 5.01 Merger, Consolidation, or Sale of Assets.

         The Company shall not, directly or indirectly: (1) consolidate or merge
with or into another Person (whether or not the Company is the surviving
corporation); or (2) sell, assign, transfer, convey or otherwise dispose of all
or substantially all of the properties or assets of the Company and its
Restricted Subsidiaries taken as a whole, in one or more related transactions,
to another Person; unless:

                  (1) either: (a) the Company is the surviving corporation; or
         (b) the Person formed by or surviving any such consolidation or merger
         (if other than the Company) or to which such sale, assignment,
         transfer, conveyance or other disposition has been made is a
         corporation organized or existing under the laws of the United States,
         any state of the United States or the District of Columbia;

                  (2) the Person formed by or surviving any such consolidation
         or merger (if other than the Company) or the Person to which such sale,
         assignment, transfer, conveyance or other disposition has been made
         assumes all the obligations of the Company under the Notes, this
         Indenture and the Registration Rights Agreement pursuant to agreements
         reasonably satisfactory to the Trustee;

                  (3) immediately after such transaction, no Default or Event of
         Default exists; and

                  (4) the Company or the Person formed by or surviving any such
         consolidation or merger (if other than the Company), or to which such
         sale, assignment, transfer, conveyance or other disposition has been
         made will, on the date of such transaction after giving pro forma
         effect thereto and any related financing transactions as if the same
         had occurred at the beginning of the applicable four-quarter period, be
         permitted to incur at least $1.00 of additional Indebtedness pursuant
         to the Debt to Cash Flow Ratio test set forth in the first paragraph of
         Section 4.09 hereof.

         In addition, the Company shall not, directly or indirectly, lease all
or substantially all of its properties or assets, in one or more related
transactions, to any other Person.

         This Section 5.01 shall not apply to:

                  (1) a merger of Escrow Corp. with ACC;

                  (2) a merger of the Company with an Affiliate solely for the
         purpose of reincorporating the Company in another jurisdiction; and

                  (3) any sale, transfer, assignment, conveyance, lease or other
         disposition of assets between or among the Company and its Restricted
         Subsidiaries.

Section 5.02 Successor Corporation Substituted.

                                       57
<PAGE>

         Upon any consolidation or merger, or any sale, assignment, transfer,
lease, conveyance or other disposition of all or substantially all of the assets
of the Company in a transaction that is subject to, and that complies with the
provisions of, Section 5.01 hereof, the successor corporation formed by such
consolidation or into or with which the Company is merged or to which such sale,
assignment, transfer, lease, conveyance or other disposition is made shall
succeed to, and be substituted for (so that from and after the date of such
consolidation, merger, sale, lease, conveyance or other disposition, the
provisions of this Indenture referring to the "Company" shall refer instead to
the successor corporation and not to the Company), and may exercise every right
and power of the Company under this Indenture with the same effect as if such
successor Person had been named as the Company herein; provided, however, that
the predecessor Company shall not be relieved from the obligation to pay the
principal of and interest on the Notes except in the case of a sale of all of
the Company's assets in a transaction that is subject to, and that complies with
the provisions of, Section 5.01 hereof.

                                   ARTICLE 6.
                              DEFAULTS AND REMEDIES

Section 6.01 Events of Default.

         Each of the following is an "Event of Default":

                  (1) the Company defaults for 30 days in the payment when due
         of interest on, or Liquidated Damages with respect to, the Notes;

                  (2) the Company defaults in the payment when due (at maturity,
         upon redemption or otherwise) of the principal of, or premium, if any,
         on the Notes;

                  (3) the Company or any of its Restricted Subsidiaries fails to
         comply with the provisions of Section 3.08, 4.07, 4.09, 4.10, 4.15 or
         5.01 hereof;

                  (4) the Company or any of its Restricted Subsidiaries fail to
         observe or perform any other covenant, representation, warranty or
         other agreement in this Indenture or the Notes for 60 days after notice
         to the Company by the Trustee or the Holders of at least 25% in
         aggregate principal amount of the Notes then outstanding voting as a
         single class;

                  (5) a default occurs under any mortgage, indenture or
         instrument under which there may be issued or by which there may be
         secured or evidenced any Indebtedness for money borrowed by the Company
         or any of its Restricted Subsidiaries (or the payment of which is
         guaranteed by the Company or any of its Restricted Subsidiaries),
         whether such Indebtedness or guarantee now exists, or is created after
         the date of this Indenture, if that default:

                           (A) is caused by a failure to pay principal of, or
                  interest or premium, if any, on such Indebtedness prior to the
                  expiration of the grace period provided in such Indebtedness
                  on the date of such default (a "Payment Default"); or

                           (B) results in the acceleration of such Indebtedness
                  prior to its express maturity,

                  and, in each case, the principal amount of any such
                  Indebtedness, together with the principal amount of any other
                  such Indebtedness under which there has been a Payment Default
                  or the maturity of which has been so accelerated, aggregates
                  $25.0 million or more;

                                       58
<PAGE>

                  (6) a final judgment or final judgments for the payment of
         money are entered by a court or courts of competent jurisdiction
         against the Company or any of its Restricted Subsidiaries or any group
         of Subsidiaries that, taken as a whole, would constitute a Restricted
         Subsidiary, which judgment or judgments are not paid, discharged or
         stayed for a period of 60 days; provided that the aggregate of all such
         undischarged judgments exceeds $35.0 million; and

                  (7) the Company or any of its Significant Subsidiaries or any
         group of Subsidiaries that, taken as a whole, would constitute a
         Significant Subsidiary pursuant to or within the meaning of Bankruptcy
         Law:

                           (A) commences a voluntary case,

                           (B) consents to the entry of an order for relief
                  against it in an involuntary case,

                           (C) consents to the appointment of a custodian of it
                  or for all or substantially all of its property,

                           (D) makes a general assignment for the benefit of its
                  creditors, or

                           (E) generally is not paying its debts as they become
                  due; or

                  (8) a court of competent jurisdiction enters an order or
         decree under any Bankruptcy Law that:

                           (A) is for relief against the Company or any of its
                  Significant Subsidiaries or any group of Subsidiaries that,
                  taken as a whole, would constitute a Significant Subsidiary in
                  an involuntary case;

                           (B) appoints a custodian of the Company or any of its
                  Significant Subsidiaries or any group of Subsidiaries that,
                  taken as a whole, would constitute a Significant Subsidiary or
                  for all or substantially all of the property of the Company or
                  any of its Significant Subsidiaries or any group of
                  Subsidiaries that, taken as a whole, would constitute a
                  Significant Subsidiary; or

                           (C) orders the liquidation of the Company or any of
                  its Significant Subsidiaries or any group of Subsidiaries
                  that, taken as a whole, would constitute a Significant
                  Subsidiary;

                  and the order or decree remains unstayed and in effect for 60
                  consecutive days; or

                  (9) failure of the Escrow Agreement, at any time, to be in
         full force and effect (unless the Escrow Deposit is released by the
         escrow agent) or any contest by the Company or any of its Subsidiaries
         or Parent of the validity or enforceability of the Escrow Agreement;

                  (10) failure by Escrow Corp. to redeem the Notes pursuant to
         the provisions described in Section 3.08 hereof; and

                  (11) except as permitted by this Indenture, any Note Guarantee
         is held in any judicial proceeding to be unenforceable or invalid or
         shall cease for any reason to be in full force and effect or any
         Guarantor, or any Person acting on behalf of any Guarantor, shall deny
         or disaffirm its obligations under its Note Guarantee.

                                       59
<PAGE>

Section 6.02 Acceleration.

         In the case of an Event of Default specified in clause (7), (8) or (9)
of Section 6.01 hereof, with respect to the Company or any of its Significant
Subsidiaries or any group of Subsidiaries that, taken as a whole, would
constitute a Significant Subsidiary, all outstanding Notes will become due and
payable immediately without further action or notice. If any other Event of
Default occurs and is continuing, the Trustee or the Holders of at least 25% in
principal amount of the then outstanding Notes may declare all the Notes to be
due and payable immediately.

         Upon any such declaration, the Notes shall become due and payable
immediately. Notwithstanding the foregoing, if an Event of Default specified in
clause (7) or (8) of Section 6.01 hereof occurs with respect to the Company, any
of its Significant Subsidiaries or any group of Subsidiaries that, taken as a
whole, would constitute a Significant Subsidiary, all outstanding Notes shall be
due and payable immediately without further action or notice. The Holders of a
majority in aggregate principal amount of the then outstanding Notes by written
notice to the Trustee may on behalf of all of the Holders rescind an
acceleration and its consequences if the rescission would not conflict with any
judgment or decree and if all existing Events of Default (except nonpayment of
principal, interest or premium that has become due solely because of the
acceleration) have been cured or waived.

         If an Event of Default occurs on or after August 1, 2007 by reason of
any willful action (or inaction) taken (or not taken) by or on behalf of the
Company with the intention of avoiding payment of the premium that the Company
would have had to pay if the Company then had elected to redeem the Notes
pursuant to Section 3.07 hereof, then, upon acceleration of the Notes, an
equivalent premium shall also become and be immediately due and payable, to the
extent permitted by law, anything in this Indenture or in the Notes to the
contrary notwithstanding. If an Event of Default occurs prior to August 1, 2007
by reason of any willful action (or inaction) taken (or not taken) by or on
behalf of the Company with the intention of avoiding the prohibition on
redemption of the Notes prior to such date, then, upon acceleration of the
Notes, an additional premium shall also become and be immediately due and
payable in an amount, for each of the years beginning on August 1 of the years
set forth below, as set forth below (expressed as a percentage of the principal
amount of the Notes on the date of payment that would otherwise be due but for
the provisions of this sentence):

<Table>
<Caption>
        YEAR                                                                               PERCENTAGE
        ----                                                                               ----------
<S>                                                                                        <C>
        2003.............................................................................    10.000%
        2004.............................................................................     8.750%
        2005.............................................................................     7.500%
        2006.............................................................................     6.250%
</Table>

Section 6.03 Other Remedies.

         If an Event of Default occurs and is continuing, the Trustee may pursue
any available remedy to collect the payment of principal, premium and Liquidated
Damages, if any, and interest on the Notes or to enforce the performance of any
provision of the Notes or this Indenture.

         The Trustee may maintain a proceeding even if it does not possess any
of the Notes or does not produce any of them in the proceeding. A delay or
omission by the Trustee or any Holder of a Note in exercising any right or
remedy accruing upon an Event of Default shall not impair the right or remedy or
constitute a waiver of or acquiescence in the Event of Default. All remedies are
cumulative to the extent permitted by law.

Section 6.04 Waiver of Past Defaults.

                                       60
<PAGE>

         Holders of not less than a majority in aggregate principal amount of
the then outstanding Notes by notice to the Trustee may on behalf of the Holders
of all of the Notes waive an existing Default or Event of Default and its
consequences hereunder, except a continuing Default or Event of Default in the
payment of the principal of, premium and Liquidated Damages, if any, or interest
on, the Notes (including in connection with an offer to purchase); provided,
however, that the Holders of a majority in aggregate principal amount of the
then outstanding Notes may rescind an acceleration and its consequences,
including any related payment default that resulted from such acceleration. Upon
any such waiver, such Default shall cease to exist, and any Event of Default
arising therefrom shall be deemed to have been cured for every purpose of this
Indenture; but no such waiver shall extend to any subsequent or other Default or
impair any right consequent thereon.

Section 6.05 Control by Majority.

         Holders of a majority in principal amount of the then outstanding Notes
may direct the time, method and place of conducting any proceeding for
exercising any remedy available to the Trustee or exercising any trust or power
conferred on it. However, the Trustee may refuse to follow any direction that
conflicts with law or this Indenture that the Trustee determines may be unduly
prejudicial to the rights of other Holders of Notes or that may involve the
Trustee in personal liability.

Section 6.06 Limitation on Suits.

         A Holder of a Note may pursue a remedy with respect to this Indenture
or the Notes only if:

                  (1) the Holder of a Note gives to the Trustee written notice
         of a continuing Event of Default;

                  (2) the Holders of at least 25% in principal amount of the
         then outstanding Notes make a written request to the Trustee to pursue
         the remedy;

                  (3) such Holder of a Note or Holders of Notes offer and, if
         requested, provide to the Trustee indemnity satisfactory to the Trustee
         against any loss, liability or expense;

                  (4) the Trustee does not comply with the request within 60
         days after receipt of the request and the offer and, if requested, the
         provision of indemnity; and

                  (5) during such 60-day period the Holders of a majority in
         principal amount of the then outstanding Notes do not give the Trustee
         a direction inconsistent with the request.

         A Holder of a Note may not use this Indenture to prejudice the rights
of another Holder of a Note or to obtain a preference or priority over another
Holder of a Note.

Section 6.07 Rights of Holders of Notes to Receive Payment.

         Notwithstanding any other provision of this Indenture, the right of any
Holder of a Note to receive payment of principal, premium and Liquidated
Damages, if any, and interest on the Note, on or after the respective due dates
expressed in the Note (including in connection with an offer to purchase), or to
bring suit for the enforcement of any such payment on or after such respective
dates, shall not be impaired or affected without the consent of such Holder.

Section 6.08 Collection Suit by Trustee.

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         If an Event of Default specified in Section 6.01(1) or (2) occurs and
is continuing, the Trustee is authorized to recover judgment in its own name and
as trustee of an express trust against the Company for the whole amount of
principal of, premium and Liquidated Damages, if any, and interest remaining
unpaid on the Notes and interest on overdue principal and, to the extent lawful,
interest and such further amount as shall be sufficient to cover the costs and
expenses of collection, including the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel.

Section 6.09 Trustee May File Proofs of Claim.

         The Trustee is authorized to file such proofs of claim and other papers
or documents as may be necessary or advisable in order to have the claims of the
Trustee (including any claim for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel) and the
Holders of the Notes allowed in any judicial proceedings relative to the Company
(or any other obligor upon the Notes), its creditors or its property and shall
be entitled and empowered to collect, receive and distribute any money or other
property payable or deliverable on any such claims and any custodian in any such
judicial proceeding is hereby authorized by each Holder to make such payments to
the Trustee, and in the event that the Trustee shall consent to the making of
such payments directly to the Holders, to pay to the Trustee any amount due to
it for the reasonable compensation, expenses, disbursements and advances of the
Trustee, its agents and counsel, and any other amounts due the Trustee under
Section 7.07 hereof. To the extent that the payment of any such compensation,
expenses, disbursements and advances of the Trustee, its agents and counsel, and
any other amounts due the Trustee under Section 7.07 hereof out of the estate in
any such proceeding, shall be denied for any reason, payment of the same shall
be secured by a Lien on, and shall be paid out of, any and all distributions,
dividends, money, securities and other properties that the Holders may be
entitled to receive in such proceeding whether in liquidation or under any plan
of reorganization or arrangement or otherwise. Nothing herein contained shall be
deemed to authorize the Trustee to authorize or consent to or accept or adopt on
behalf of any Holder any plan of reorganization, arrangement, adjustment or
composition affecting the Notes or the rights of any Holder, or to authorize the
Trustee to vote in respect of the claim of any Holder in any such proceeding.

Section 6.10 Priorities.

         If the Trustee collects any money pursuant to this Article 6, it shall
pay out the money in the following order:

                  First: to the Trustee, its agents and attorneys for amounts
         due under Section 7.07 hereof, including payment of all compensation,
         expense and liabilities incurred, and all advances made, by the Trustee
         and the costs and expenses of collection;

                  Second: to Holders of Notes for amounts due and unpaid on the
         Notes for principal, premium and Liquidated Damages, if any, and
         interest, ratably, without preference or priority of any kind,
         according to the amounts due and payable on the Notes for principal,
         premium and Liquidated Damages, if any and interest, respectively; and

                  Third: to the Company or to such party as a court of competent
         jurisdiction shall direct.

         The Trustee may fix a record date and payment date for any payment to
Holders of Notes pursuant to this Section 6.10.

Section 6.11 Undertaking for Costs.

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         In any suit for the enforcement of any right or remedy under this
Indenture or in any suit against the Trustee for any action taken or omitted by
it as a Trustee, a court in its discretion may require the filing by any party
litigant in the suit of an undertaking to pay the costs of the suit, and the
court in its discretion may assess reasonable costs, including reasonable
attorneys' fees, against any party litigant in the suit, having due regard to
the merits and good faith of the claims or defenses made by the party litigant.
This Section 6.11 does not apply to a suit by the Trustee, a suit by a Holder of
a Note pursuant to Section 6.07 hereof, or a suit by Holders of more than 10% in
principal amount of the then outstanding Notes.

                                   ARTICLE 7.
                                     TRUSTEE

Section 7.01 Duties of Trustee.

         (a) If an Event of Default has occurred and is continuing, the Trustee
will exercise such of the rights and powers vested in it by this Indenture, and
use the same degree of care and skill in its exercise, as a prudent person would
exercise or use under the circumstances in the conduct of such person's own
affairs.

         (b) Except during the continuance of an Event of Default:

                  (1) the duties of the Trustee will be determined solely by the
         express provisions of this Indenture and the Trustee need perform only
         those duties that are specifically set forth in this Indenture and no
         others, and no implied covenants or obligations shall be read into this
         Indenture against the Trustee; and

                  (2) in the absence of bad faith on its part, the Trustee may
         conclusively rely, as to the truth of the statements and the
         correctness of the opinions expressed therein, upon certificates or
         opinions furnished to the Trustee and conforming to the requirements of
         this Indenture. However, the Trustee will examine the certificates and
         opinions to determine whether or not they conform to the requirements
         of this Indenture.

         (c) The Trustee may not be relieved from liabilities for its own
negligent action, its own negligent failure to act, or its own willful
misconduct, except that:

                  (1) this paragraph does not limit the effect of paragraph (b)
         of this Section 7.01;

                  (2) the Trustee will not be liable for any error of judgment
         made in good faith by a Responsible Officer, unless it is proved that
         the Trustee was negligent in ascertaining the pertinent facts; and

                  (3) the Trustee will not be liable with respect to any action
         it takes or omits to take in good faith in accordance with a direction
         received by it pursuant to Section 6.05 hereof.

         (d) Whether or not therein expressly so provided, every provision of
this Indenture that in any way relates to the Trustee is subject to paragraphs
(a), (b), and (c) of this Section 7.01.

         (e) No provision of this Indenture will require the Trustee to expend
or risk its own funds or incur any liability. The Trustee will be under no
obligation to exercise any of its rights and powers under this Indenture at the
request of any Holders, unless such Holder has offered to the Trustee security
and indemnity satisfactory to it against any loss, liability or expense.

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         (f) The Trustee will not be liable for interest on any money received
by it except as the Trustee may agree in writing with the Company. Money held in
trust by the Trustee need not be segregated from other funds except to the
extent required by law.

Section 7.02 Rights of Trustee.

         (a) The Trustee may conclusively rely upon any document believed by it
to be genuine and to have been signed or presented by the proper Person. The
Trustee need not investigate any fact or matter stated in the document.

         (b) Before the Trustee acts or refrains from acting, it may require an
Officers' Certificate or an Opinion of Counsel or both. The Trustee will not be
liable for any action it takes or omits to take in good faith in reliance on
such Officers' Certificate or Opinion of Counsel. The Trustee may consult with
counsel and the written advice of such counsel or any Opinion of Counsel will be
full and complete authorization and protection from liability in respect of any
action taken, suffered or omitted by it hereunder in good faith and in reliance
thereon.

         (c) The Trustee may act through its attorneys and agents and will not
be responsible for the misconduct or negligence of any agent appointed with due
care.

         (d) The Trustee will not be liable for any action it takes or omits to
take in good faith that it believes to be authorized or within the rights or
powers conferred upon it by this Indenture.

         (e) Unless otherwise specifically provided in this Indenture, any
demand, request, direction or notice from the Company will be sufficient if
signed by an Officer of the Company.

         (f) The Trustee will be under no obligation to exercise any of the
rights or powers vested in it by this Indenture at the request or direction of
any of the Holders unless such Holders have offered to the Trustee reasonable
security or indemnity against the costs, expenses and liabilities that might be
incurred by it in compliance with such request or direction.

Section 7.03 Individual Rights of Trustee.

         The Trustee in its individual or any other capacity may become the
owner or pledgee of Notes and may otherwise deal with the Company or any
Affiliate of the Company with the same rights it would have if it were not
Trustee. However, in the event that the Trustee acquires any conflicting
interest it must eliminate such conflict within 90 days, apply to the SEC for
permission to continue as trustee or resign. Any Agent may do the same with like
rights and duties. The Trustee is also subject to Sections 7.10 and 7.11 hereof.

Section 7.04 Trustee's Disclaimer.

         The Trustee will not be responsible for and makes no representation as
to the validity or adequacy of this Indenture or the Notes, it shall not be
accountable for the Company's use of the proceeds from the Notes or any money
paid to the Company or upon the Company's direction under any provision of this
Indenture, it will not be responsible for the use or application of any money
received by any Paying Agent other than the Trustee, and it will not be
responsible for any statement or recital herein or any statement in the Notes or
any other document in connection with the sale of the Notes or pursuant to this
Indenture other than its certificate of authentication.

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Section 7.05 Notice of Defaults.

         If a Default or Event of Default occurs and is continuing and if it is
known to the Trustee, the Trustee will mail to Holders of Notes a notice of the
Default or Event of Default within 90 days after it occurs. Except in the case
of a Default or Event of Default in payment of principal of, premium or
Liquidated Damages, if any, or interest on any Note, the Trustee may withhold
the notice if and so long as a committee of its Responsible Officers in good
faith determines that withholding the notice is in the interests of the Holders
of the Notes.

Section 7.06 Reports by Trustee to Holders of the Notes.

         (a) Within 60 days after each May 15 beginning with the May 15
following the date of this Indenture, and for so long as Notes remain
outstanding, the Trustee will mail to the Holders of the Notes a brief report
dated as of such reporting date that complies with TIA Section 313(a) (but if no
event described in TIA Section 313(a) has occurred within the twelve months
preceding the reporting date, no report need be transmitted). The Trustee also
will comply with TIA Section 313(b)(2). The Trustee will also transmit by mail
all reports as required by TIA Section 313(c).

         (b) A copy of each report at the time of its mailing to the Holders of
Notes will be mailed by the Trustee to the Company and filed by the Trustee with
the SEC and each stock exchange on which the Notes are listed in accordance with
TIA Section 313(d). The Company will promptly notify the Trustee when the Notes
are listed on any stock exchange.

Section 7.07 Compensation and Indemnity.

         (a) The Company will pay to the Trustee from time to time reasonable
compensation for its acceptance of this Indenture and services hereunder. The
Trustee's compensation will not be limited by any law on compensation of a
trustee of an express trust. The Company will reimburse the Trustee promptly
upon request for all reasonable disbursements, advances and expenses incurred or
made by it in addition to the compensation for its services. Such expenses will
include the reasonable compensation, disbursements and expenses of the Trustee's
agents and counsel.

         (b) The Company and the Guarantors will indemnify the Trustee against
any and all losses, liabilities or expenses incurred by it arising out of or in
connection with the acceptance or administration of its duties under this
Indenture, including the costs and expenses of enforcing this Indenture against
the Company and the Guarantors (including this Section 7.07) and defending
itself against any claim (whether asserted by the Company, the Guarantors or any
Holder or any other Person) or liability in connection with the exercise or
performance of any of its powers or duties hereunder, except to the extent any
such loss, liability or expense may be attributable to its negligence or bad
faith. The Trustee will notify the Company promptly of any claim for which it
may seek indemnity. Failure by the Trustee to so notify the Company will not
relieve the Company or any of the Guarantors of their obligations hereunder. The
Company or such Guarantor will defend the claim and the Trustee will cooperate
in the defense. The Trustee may have separate counsel and the Company will pay
the reasonable fees and expenses of such counsel. Neither the Company nor any
Guarantor need pay for any settlement made without its consent, which consent
will not be unreasonably withheld.

         (c) The obligations of the Company and the Guarantors under this
Section 7.07 will survive the satisfaction and discharge of this Indenture.

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<PAGE>

         (d) To secure the Company's payment obligations in this Section 7.07,
the Trustee will have a Lien prior to the Notes on all money or property held or
collected by the Trustee, except that held in trust to pay principal and
interest on particular Notes. Such Lien will survive the satisfaction and
discharge of this Indenture.

         (e) When the Trustee incurs expenses or renders services after an Event
of Default specified in Section 6.01(7) or (8) hereof occurs, the expenses and
the compensation for the services (including the fees and expenses of its agents
and counsel) are intended to constitute expenses of administration under any
Bankruptcy Law.

         (f) The Trustee will comply with the provisions of TIA Section
313(b)(2) to the extent applicable.

Section 7.08 Replacement of Trustee.

         (a) A resignation or removal of the Trustee and appointment of a
successor Trustee will become effective only upon the successor Trustee's
acceptance of appointment as provided in this Section 7.08.

         (b) The Trustee may resign in writing at any time and be discharged
from the trust hereby created by so notifying the Company. The Holders of a
majority in principal amount of the then outstanding Notes may remove the
Trustee by so notifying the Trustee and the Company in writing. The Company may
remove the Trustee if:

                  (1) the Trustee fails to comply with Section 7.10 hereof;

                  (2) the Trustee is adjudged a bankrupt or an insolvent or an
         order for relief is entered with respect to the Trustee under any
         Bankruptcy Law;

                  (3) a custodian or public officer takes charge of the Trustee
         or its property; or

                  (4) the Trustee becomes incapable of acting.

         (c) If the Trustee resigns or is removed or if a vacancy exists in the
office of Trustee for any reason, the Company will promptly appoint a successor
Trustee. Within one year after the successor Trustee takes office, the Holders
of a majority in principal amount of the then outstanding Notes may appoint a
successor Trustee to replace the successor Trustee appointed by the Company.

         (d) If a successor Trustee does not take office within 60 days after
the retiring Trustee resigns or is removed, the retiring Trustee, the Company,
or the Holders of at least 10% in principal amount of the then outstanding Notes
may petition any court of competent jurisdiction for the appointment of a
successor Trustee.

         (e) If the Trustee, after written request by any Holder who has been a
Holder for at least six months, fails to comply with Section 7.10, such Holder
may petition any court of competent jurisdiction for the removal of the Trustee
and the appointment of a successor Trustee.

         (f) A successor Trustee will deliver a written acceptance of its
appointment to the retiring Trustee and to the Company. Thereupon, the
resignation or removal of the retiring Trustee will become effective, and the
successor Trustee will have all the rights, powers and duties of the Trustee
under this Indenture. The successor Trustee will mail a notice of its succession
to Holders. The retiring Trustee will promptly transfer all property held by it
as Trustee to the successor Trustee, provided all sums owing to the Trustee
hereunder have been paid and subject to the Lien provided for in Section 7.07
hereof.

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Notwithstanding replacement of the Trustee pursuant to this Section 7.08, the
Company's obligations under Section 7.07 hereof will continue for the benefit of
the retiring Trustee.

Section 7.09 Successor Trustee by Merger, etc.

         If the Trustee consolidates, merges or converts into, or transfers all
or substantially all of its corporate trust business to, another corporation,
the successor corporation without any further act will be the successor Trustee.

Section 7.10 Eligibility; Disqualification.

         There will at all times be a Trustee hereunder that is a corporation
organized and doing business under the laws of the United States of America or
of any state thereof that is authorized under such laws to exercise corporate
trustee power, that is subject to supervision or examination by federal or state
authorities and that has a combined capital and surplus of at least $100 million
as set forth in its most recent published annual report of condition.

         This Indenture will always have a Trustee who satisfies the
requirements of TIA Section 310(a)(1), (2) and (5). The Trustee is subject to
TIA Section 310(b).

Section 7.11 Preferential Collection of Claims Against Company.

         The Trustee is subject to TIA Section 311(a), excluding any creditor
relationship listed in TIA Section 311(b). A Trustee who has resigned or been
removed shall be subject to TIA Section 311(a) to the extent indicated therein.

                                   ARTICLE 8.
                    LEGAL DEFEASANCE AND COVENANT DEFEASANCE

Section 8.01 Option to Effect Legal Defeasance or Covenant Defeasance.

         The Company may, at the option of its Board of Directors evidenced by a
resolution set forth in an Officers' Certificate, at any time, elect to have
either Section 8.02 or 8.03 hereof be applied to all outstanding Notes upon
compliance with the conditions set forth below in this Article 8.

Section 8.02 Legal Defeasance and Discharge.

         Upon the Company's exercise under Section 8.01 hereof of the option
applicable to this Section 8.02, the Company and each of the Guarantors will,
subject to the satisfaction of the conditions set forth in Section 8.04 hereof,
be deemed to have been discharged from their obligations with respect to all
outstanding Notes (including the Note Guarantees) on the date the conditions set
forth below are satisfied (hereinafter, "Legal Defeasance"). For this purpose,
Legal Defeasance means that the Company and the Guarantors will be deemed to
have paid and discharged the entire Indebtedness represented by the outstanding
Notes (including the Note Guarantees), which will thereafter be deemed to be
"outstanding" only for the purposes of Section 8.05 hereof and the other
Sections of this Indenture referred to in clauses (1) and (2) below, and to have
satisfied all their other obligations under such Notes, the Note Guarantees and
this Indenture (and the Trustee, on demand of and at the expense of the Company,
shall execute proper instruments acknowledging the same), except for the
following provisions which will survive until otherwise terminated or discharged
hereunder:

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                  (1) the rights of Holders of outstanding Notes to receive
         payments in respect of the principal of, or interest or premium and
         Liquidated Damages, if any, on such Notes when such payments are due
         from the trust referred to in Section 8.04 hereof;

                  (2) the Company's obligations with respect to such Notes under
         Article 2 and Section 4.02 hereof;

                  (3) the rights, powers, trusts, duties and immunities of the
         Trustee hereunder and the Company's and the Guarantors' obligations in
         connection therewith; and

                  (4) this Article 8.

         Subject to compliance with this Article 8, the Company may exercise its
option under this Section 8.02 notwithstanding the prior exercise of its option
under Section 8.03 hereof.

Section 8.03 Covenant Defeasance.

         Upon the Company's exercise under Section 8.01 hereof of the option
applicable to this Section 8.03, the Company and the Guarantors will, subject to
the satisfaction of the conditions set forth in Section 8.04 hereof, be released
from each of their obligations under the covenants contained in Sections 4.07,
4.08, 4.09, 4.10, 4.11, 4.12, 4.13, 4.15, 4.16, 4.17 and 4.18 hereof and clause
(4) of Section 5.01 hereof with respect to the outstanding Notes on and after
the date the conditions set forth in Section 8.04 hereof are satisfied
(hereinafter, "Covenant Defeasance"), and the Notes will thereafter be deemed
not "outstanding" for the purposes of any direction, waiver, consent or
declaration or act of Holders (and the consequences of any thereof) in
connection with such covenants, but will continue to be deemed "outstanding" for
all other purposes hereunder (it being understood that such Notes will not be
deemed outstanding for accounting purposes). For this purpose, Covenant
Defeasance means that, with respect to the outstanding Notes and Note
Guarantees, the Company and the Guarantors may omit to comply with and will have
no liability in respect of any term, condition or limitation set forth in any
such covenant, whether directly or indirectly, by reason of any reference
elsewhere herein to any such covenant or by reason of any reference in any such
covenant to any other provision herein or in any other document and such
omission to comply will not constitute a Default or an Event of Default under
Section 6.01 hereof, but, except as specified above, the remainder of this
Indenture and such Notes and Note Guarantees will be unaffected thereby. In
addition, upon the Company's exercise under Section 8.01 hereof of the option
applicable to this Section 8.03 hereof, subject to the satisfaction of the
conditions set forth in Section 8.04 hereof, Sections 6.01(3) through 6.01(5)
hereof will not constitute Events of Default.

Section 8.04 Conditions to Legal or Covenant Defeasance.

         In order to exercise either Legal Defeasance or Covenant Defeasance
under either Section 8.02 or 8.03 hereof:

                  (1) the Company must irrevocably deposit with the Trustee, in
         trust, for the benefit of the Holders, cash in United States dollars,
         non-callable Government Securities, or a combination thereof, in such
         amounts as will be sufficient, in the opinion of a nationally
         recognized firm of independent public accountants, to pay the principal
         of, premium and Liquidated Damages, if any, and interest on the
         outstanding Notes on the stated date for payment thereof or on the
         applicable redemption date, as the case may be;

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<PAGE>

                  (2) in the case of an election under Section 8.02 hereof, the
         Company has delivered to the Trustee an Opinion of Counsel in the
         United States reasonably acceptable to the Trustee confirming that:

                           (A) the Company has received from, or there has been
                  published by, the Internal Revenue Service a ruling; or

                           (B) since the date of this Indenture, there has been
                  a change in the applicable federal income tax law,

                  in either case to the effect that, and based thereon such
                  Opinion of Counsel shall confirm that, the Holders of the
                  outstanding Notes will not recognize income, gain or loss for
                  federal income tax purposes as a result of such Legal
                  Defeasance and will be subject to federal income tax on the
                  same amounts, in the same manner and at the same times as
                  would have been the case if such Legal Defeasance had not
                  occurred;

                  (3) in the case of an election under Section 8.03 hereof, the
         Company must deliver to the Trustee an Opinion of Counsel in the United
         States reasonably acceptable to the Trustee confirming that the Holders
         of the outstanding Notes will not recognize income, gain or loss for
         federal income tax purposes as a result of such Covenant Defeasance and
         will be subject to federal income tax on the same amounts, in the same
         manner and at the same times as would have been the case if such
         Covenant Defeasance had not occurred;

                  (4) no Default or Event of Default shall have occurred and be
         continuing on the date of such deposit (other than a Default or Event
         of Default resulting from the borrowing of funds to be applied to such
         deposit);

                  (5) such Legal Defeasance or Covenant Defeasance will not
         result in a breach or violation of, or constitute a default under, any
         material agreement or instrument (other than this Indenture) to which
         the Company or any of its Subsidiaries is a party or by which the
         Company or any of its Subsidiaries is bound;

                  (6) the Company must deliver to the Trustee an Officers'
         Certificate stating that the deposit was not made by the Company with
         the intent of preferring the Holders of Notes over the other creditors
         of the Company with the intent of defeating, hindering, delaying or
         defrauding any other creditors of the Company or others; and

                  (7) the Company must deliver to the Trustee an Officers'
         Certificate and an Opinion of Counsel, each stating that all conditions
         precedent provided for or relating to the Legal Defeasance or the
         Covenant Defeasance have been complied with.

Section 8.05 Deposited Money and Government Securities to be Held in Trust;
Other Miscellaneous Provisions.

         Subject to Section 8.06 hereof, all money and non-callable Government
Securities (including the proceeds thereof) deposited with the Trustee (or other
qualifying trustee, collectively for purposes of this Section 8.05, the
"Trustee") pursuant to Section 8.04 hereof in respect of the outstanding Notes
will be held in trust and applied by the Trustee, in accordance with the
provisions of such Notes and this Indenture, to the payment, either directly or
through any Paying Agent (including the Company acting as Paying Agent) as the
Trustee may determine, to the Holders of such Notes of all sums due and to
become

                                       69
<PAGE>

due thereon in respect of principal, premium and Liquidated Damages,if any, and
interest, but such money need not be segregated from other funds except to the
extent required by law.

         The Company will pay and indemnify the Trustee against any tax, fee or
other charge imposed on or assessed against the cash or non-callable Government
Securities deposited pursuant to Section 8.04 hereof or the principal and
interest received in respect thereof other than any such tax, fee or other
charge which by law is for the account of the Holders of the outstanding Notes.

         Notwithstanding anything in this Article 8 to the contrary, the Trustee
will deliver or pay to the Company from time to time upon the request of the
Company any money or non-callable Government Securities held by it as provided
in Section 8.04 hereof which, in the opinion of a nationally recognized firm of
independent public accountants expressed in a written certification thereof
delivered to the Trustee (which may be the opinion delivered under Section
8.04(1) hereof), are in excess of the amount thereof that would then be required
to be deposited to effect an equivalent Legal Defeasance or Covenant Defeasance.

Section 8.06 Repayment to Company.

         Any money deposited with the Trustee or any Paying Agent, or then held
by the Company, in trust for the payment of the principal of, premium or
Liquidated Damages, if any, or interest on any Note and remaining unclaimed for
two years after such principal, premium or Liquidated Damages, if any, or
interest has become due and payable shall be paid to the Company on its request
or (if then held by the Company) will be discharged from such trust; and the
Holder of such Note will thereafter be permitted to look only to the Company for
payment thereof, and all liability of the Trustee or such Paying Agent with
respect to such trust money, and all liability of the Company as trustee
thereof, will thereupon cease; provided, however, that the Trustee or such
Paying Agent, before being required to make any such repayment, may at the
expense of the Company cause to be published once, in the New York Times and The
Wall Street Journal (national edition), notice that such money remains unclaimed
and that, after a date specified therein, which will not be less than 30 days
from the date of such notification or publication, any unclaimed balance of such
money then remaining will be repaid to the Company.

Section 8.07 Reinstatement.

         If the Trustee or Paying Agent is unable to apply any United States
dollars or non-callable Government Securities in accordance with Section 8.02 or
8.03 hereof, as the case may be, by reason of any order or judgment of any court
or governmental authority enjoining, restraining or otherwise prohibiting such
application, then the Company's and the Guarantor's obligations under this
Indenture and the Notes and the Note Guarantees will be revived and reinstated
as though no deposit had occurred pursuant to Section 8.02 or 8.03 hereof until
such time as the Trustee or Paying Agent is permitted to apply all such money in
accordance with Section 8.02 or 8.03 hereof, as the case may be; provided,
however, that, if the Company makes any payment of principal of, premium or
Liquidated Damages, if any, or interest on any Note following the reinstatement
of its obligations, the Company will be subrogated to the rights of the Holders
of such Notes to receive such payment from the money held by the Trustee or
Paying Agent.

                                   ARTICLE 9.
                        AMENDMENT, SUPPLEMENT AND WAIVER

Section 9.01 Without Consent of Holders of Notes.

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         Notwithstanding Section 9.02 of this Indenture, the Company, the
Guarantors and the Trustee may amend or supplement this Indenture, the Note
Guarantees or the Notes without the consent of any Holder of a Note:

                  (1) to cure any ambiguity, defect or inconsistency;

                  (2) to provide for uncertificated Notes in addition to or in
         place of certificated Notes or to alter the provisions of Article 2
         hereof (including the related definitions) in a manner that does not
         materially adversely affect any Holder;

                  (3) to provide for the assumption of the Company's or a
         Guarantor's obligations to the Holders of the Notes by a successor to
         the Company pursuant to Article 5 or Article 10 hereof;

                  (4) to make any change that would provide any additional
         rights or benefits to the Holders of the Notes or that does not
         adversely affect the legal rights hereunder of any Holder of the Note;

                  (5) to comply with requirements of the SEC in order to effect
         or maintain the qualification of this Indenture under the TIA;

                  (6) to provide for the issuance of Additional Notes in
         accordance with the limitations set forth in this Indenture as of the
         date hereof; or

                  (7) to allow any Guarantor to execute a supplemental indenture
         and/or a Note Guarantee with respect to the Notes.

         Upon the request of the Company accompanied by a resolution of its
Board of Directors authorizing the execution of any such amended or supplemental
Indenture, and upon receipt by the Trustee of the documents described in Section
7.02 hereof, the Trustee will join with the Company and the Guarantors in the
execution of any amended or supplemental Indenture authorized or permitted by
the terms of this Indenture and to make any further appropriate agreements and
stipulations that may be therein contained, but the Trustee will not be
obligated to enter into such amended or supplemental Indenture that affects its
own rights, duties or immunities under this Indenture or otherwise.

Section 9.02 With Consent of Holders of Notes.

         Except as provided below in this Section 9.02, the Company and the
Trustee may amend or supplement this Indenture (including, without limitation,
Section 3.09, 4.10 and 4.15 hereof), the Note Guarantees and the Notes with the
consent of the Holders of at least a majority in principal amount of the Notes
(including, without limitation, Additional Notes, if any) then outstanding
voting as a single class (including, without limitation, consents obtained in
connection with a tender offer or exchange offer for, or purchase of, the
Notes), and, subject to Sections 6.04 and 6.07 hereof, any existing Default or
Event of Default (other than a Default or Event of Default in the payment of the
principal of, premium or Liquidated Damages, if any, or interest on the Notes,
except a payment default resulting from an acceleration that has been rescinded)
or compliance with any provision of this Indenture, the Note Guarantees or the
Notes may be waived with the consent of the Holders of a majority in principal
amount of the then outstanding Notes voting as a single class (including
consents obtained in connection with a tender offer or exchange offer for, or
purchase of, the Notes). Without the consent of at least 75% in principal amount
of the Notes then outstanding (including consents obtained in connection with a
tender offer or exchange offer for, or purchase of, such Notes), no waiver or
amendment to this Indenture may make any change in the provisions of Section
3.09, 4.10 or 4.15 hereof that adversely affects the rights of

                                       71
<PAGE>

any Holder of Notes. Section 2.08 hereof shall determine which Notes are
considered to be "outstanding" for purposes of this Section 9.02.

         Upon the request of the Company accompanied by a resolution of its
Board of Directors authorizing the execution of any such amended or supplemental
Indenture, and upon the filing with the Trustee of evidence satisfactory to the
Trustee of the consent of the Holders of Notes as aforesaid, and upon receipt by
the Trustee of the documents described in Section 7.02 hereof, the Trustee will
join with the Company in the execution of such amended or supplemental Indenture
unless such amended or supplemental Indenture directly affects the Trustee's own
rights, duties or immunities under this Indenture or otherwise, in which case
the Trustee may in its discretion, but will not be obligated to, enter into such
amended or supplemental Indenture.

         It is not be necessary for the consent of the Holders of Notes under
this Section 9.02 to approve the particular form of any proposed amendment or
waiver, but it is sufficient if such consent approves the substance thereof.

         After an amendment, supplement or waiver under this Section 9.02
becomes effective, the Company will mail to the Holders of Notes affected
thereby a notice briefly describing the amendment, supplement or waiver. Any
failure of the Company to mail such notice, or any defect therein, will not,
however, in any way impair or affect the validity of any such amended or
supplemental Indenture or waiver. Subject to Sections 6.04 and 6.07 hereof, the
Holders of a majority in aggregate principal amount of the Notes then
outstanding voting as a single class may waive compliance in a particular
instance by the Company with any provision of this Indenture or the Notes.
However, without the consent of each Holder affected, an amendment or waiver
under this Section 9.02 may not (with respect to any Notes held by a
non-consenting Holder):

                  (1) reduce the principal amount of Notes whose Holders must
         consent to an amendment, supplement or waiver;

                  (2) reduce the principal of or change the fixed maturity of
         any Note or alter or waive any of the provisions with respect to the
         redemption of the Notes except as provided above with respect to
         Sections 3.09, 4.10 and 4.15 hereof;

                  (3) reduce the rate of or change the time for payment of
         interest, including default interest, on any Note;

                  (4) waive a Default or Event of Default in the payment of
         principal of or premium or Liquidated Damages, if any, or interest on
         the Notes (except a rescission of acceleration of the Notes by the
         Holders of at least a majority in aggregate principal amount of the
         then outstanding Notes and a waiver of the payment default that
         resulted from such acceleration);

                  (5) make any Note payable in money other than that stated in
         the Notes;

                  (6) make any change in the provisions of this Indenture
         relating to waivers of past Defaults or the rights of Holders of Notes
         to receive payments of principal of, or interest or premium or
         Liquidated Damages, if any, on the Notes;

                  (7) make any change in Section 6.04 or 6.07 hereof or in the
         foregoing amendment and waiver provisions; or

                                       72
<PAGE>

                  (8) release any Guarantor from any of its obligations under
         its Note Guarantee or this Indenture, except in accordance with the
         terms of this Indenture.

Section 9.03 Compliance with Trust Indenture Act.

         Every amendment or supplement to this Indenture or the Notes will be
set forth in a amended or supplemental Indenture that complies with the TIA as
then in effect.

Section 9.04 Revocation and Effect of Consents.

         Until an amendment, supplement or waiver becomes effective, a consent
to it by a Holder of a Note is a continuing consent by the Holder of a Note and
every subsequent Holder of a Note or portion of a Note that evidences the same
debt as the consenting Holder's Note, even if notation of the consent is not
made on any Note. However, any such Holder of a Note or subsequent Holder of a
Note may revoke the consent as to its Note if the Trustee receives written
notice of revocation before the date the waiver, supplement or amendment becomes
effective. An amendment, supplement or waiver becomes effective in accordance
with its terms and thereafter binds every Holder.

Section 9.05 Notation on or Exchange of Notes.

         The Trustee may place an appropriate notation about an amendment,
supplement or waiver on any Note thereafter authenticated. The Company in
exchange for all Notes may issue and the Trustee shall, upon receipt of an
Authentication Order, authenticate new Notes that reflect the amendment,
supplement or waiver.

         Failure to make the appropriate notation or issue a new Note will not
affect the validity and effect of such amendment, supplement or waiver.

Section 9.06 Trustee to Sign Amendments, etc.

         The Trustee will sign any amended or supplemental Indenture authorized
pursuant to this Article 9 if the amendment or supplement does not adversely
affect the rights, duties, liabilities or immunities of the Trustee. The Company
may not sign an amendment or supplemental Indenture until the Board of Directors
approves it. In executing any amended or supplemental indenture, the Trustee
will be entitled to receive and (subject to Section 7.01 hereof) will be fully
protected in relying upon, in addition to the documents required by Section
12.04 hereof, an Officers' Certificate and an Opinion of Counsel stating that
the execution of such amended or supplemental Indenture is authorized or
permitted by this Indenture.

                                  ARTICLE 10.
                                 NOTE GUARANTEES

Section 10.01 Guarantee.

         (a) Subject to this Article 10, each of the Guarantors hereby, jointly
and severally, unconditionally guarantees to each Holder of a Note authenticated
and delivered by the Trustee and to the Trustee and its successors and assigns,
irrespective of the validity and enforceability of this Indenture, the Notes or
the obligations of the Company hereunder or thereunder, that:

                  (1) the principal of, premium and Liquidated Damages, if any,
         and interest on the Notes will be promptly paid in full when due,
         whether at maturity, by acceleration, redemption or

                                       73
<PAGE>

         otherwise, and interest on the overdue principal of and interest on the
         Notes, if any, if lawful, and all other obligations of the Company to
         the Holders or the Trustee hereunder or thereunder will be promptly
         paid in full or performed, all in accordance with the terms hereof and
         thereof; and

                  (2) in case of any extension of time of payment or renewal of
         any Notes or any of such other obligations, that same will be promptly
         paid in full when due or performed in accordance with the terms of the
         extension or renewal, whether at stated maturity, by acceleration or
         otherwise.

         Failing payment when due of any amount so guaranteed or any performance
so guaranteed for whatever reason, the Guarantors will be jointly and severally
obligated to pay the same immediately. Each Guarantor agrees that this is a
guarantee of payment and not a guarantee of collection.

         (b) The Guarantors hereby agree that their obligations hereunder are
unconditional, irrespective of the validity, regularity or enforceability of the
Notes or this Indenture, the absence of any action to enforce the same, any
waiver or consent by any Holder of the Notes with respect to any provisions
hereof or thereof, the recovery of any judgment against the Company, any action
to enforce the same or any other circumstance which might otherwise constitute a
legal or equitable discharge or defense of a guarantor. Each Guarantor hereby
waives diligence, presentment, demand of payment, filing of claims with a court
in the event of insolvency or bankruptcy of the Company, any right to require a
proceeding first against the Company, protest, notice and all demands whatsoever
and covenant that this Note Guarantee will not be discharged except by complete
performance of the obligations contained in the Notes and this Indenture.

         (c) If any Holder or the Trustee is required by any court or otherwise
to return to the Company, the Guarantors or any custodian, trustee, liquidator
or other similar official acting in relation to either the Company or the
Guarantors, any amount paid by either to the Trustee or such Holder, this Note
Guarantee, to the extent theretofore discharged, will be reinstated in full
force and effect.

         (d) Each Guarantor agrees that it will not be entitled to any right of
subrogation in relation to the Holders in respect of any obligations guaranteed
hereby until payment in full of all obligations guaranteed hereby. Each
Guarantor further agrees that, as between the Guarantors, on the one hand, and
the Holders and the Trustee, on the other hand, (1) the maturity of the
obligations guaranteed hereby may be accelerated as provided in Article 6 hereof
for the purposes of this Note Guarantee, notwithstanding any stay, injunction or
other prohibition preventing such acceleration in respect of the obligations
guaranteed hereby, and (2) in the event of any declaration of acceleration of
such obligations as provided in Article 6 hereof, such obligations (whether or
not due and payable) will forthwith become due and payable by the Guarantors for
the purpose of this Note Guarantee. The Guarantors will have the right to seek
contribution from any non-paying Guarantor so long as the exercise of such right
does not impair the rights of the Holders under the Note Guarantee.

Section 10.02 Limitation on Guarantor Liability.

         Each Guarantor, and by its acceptance of Notes, each Holder, hereby
confirms that it is the intention of all such parties that the Note Guarantee of
such Guarantor not constitute a fraudulent transfer or conveyance for purposes
of Bankruptcy Law, the Uniform Fraudulent Conveyance Act, the Uniform Fraudulent
Transfer Act or any similar federal or state law to the extent applicable to any
Note Guarantee. To effectuate the foregoing intention, the Trustee, the Holders
and the Guarantors hereby irrevocably agree that the obligations of such
Guarantor will be limited to the maximum amount that will, after giving effect
to such maximum amount and all other contingent and fixed liabilities of such
Guarantor that are relevant under such laws, and after giving effect to any
collections from, rights to receive contribution

                                       74
<PAGE>

from or payments made by or on behalf of any other Guarantor in respect of the
obligations of such other Guarantor under this Article 10, result in the
obligations of such Guarantor under its Note Guarantee not constituting a
fraudulent transfer or conveyance.

Section 10.03 Execution and Delivery of Note Guarantee.

         To evidence its Note Guarantee set forth in Section 10.01, each
Guarantor hereby agrees that a notation of such Note Guarantee substantially in
the form attached as Exhibit E hereto will be endorsed by an Officer of such
Guarantor on each Note authenticated and delivered by the Trustee and that this
Indenture will be executed on behalf of such Guarantor by one of its Officers.

         Each Guarantor hereby agrees that its Note Guarantee set forth in
Section 10.01 will remain in full force and effect notwithstanding any failure
to endorse on each Note a notation of such Note Guarantee.

         If an Officer whose signature is on this Indenture or on the Note
Guarantee no longer holds that office at the time the Trustee authenticates the
Note on which a Note Guarantee is endorsed, the Note Guarantee will be valid
nevertheless.

         The delivery of any Note by the Trustee, after the authentication
thereof hereunder, will constitute due delivery of the Note Guarantee set forth
in this Indenture on behalf of the Guarantors.

         In the event that the Company creates or acquires any Domestic
Subsidiary after the date of this Indenture, if required by Section 4.18 hereof,
the Company will cause such Domestic Subsidiary to comply with the provisions of
Section 4.18 hereof and this Article 10, to the extent applicable.

Section 10.04 Guarantors May Consolidate, etc., on Certain Terms.

         Except as otherwise provided in Section 10.05, no Guarantor may sell or
otherwise dispose of all or substantially all of its assets to, or consolidate
with or merge with or into (whether or not such Guarantor is the surviving
Person) another Person, other than the Company or another Guarantor, unless:

                  (1) immediately after giving effect to such transaction, no
         Default or Event of Default exists; and

                  (2) either:

                           (a) subject to Section 10.05 hereof, the Person
                  acquiring the property in any such sale or disposition or the
                  Person formed by or surviving any such consolidation or merger
                  unconditionally assumes all the obligations of that Guarantor,
                  pursuant to a supplemental indenture in form and substance
                  reasonably satisfactory to the Trustee, under the Notes, this
                  Indenture and the Note Guarantee on the terms set forth herein
                  or therein; and

                           (b) the Net Proceeds of such sale or other
                  disposition are applied in accordance with the applicable
                  provisions of this Indenture, including without limitation,
                  Section 4.10 hereof.

         In case of any such consolidation, merger, sale or conveyance and upon
the assumption by the successor Person, by supplemental indenture, executed and
delivered to the Trustee and satisfactory in form to the Trustee, of the Note
Guarantee endorsed upon the Notes and the due and punctual performance of all of
the covenants and conditions of this Indenture to be performed by the Guarantor,
such successor Person will succeed to and be substituted for the Guarantor with
the same effect as if it

                                       75
<PAGE>

had been named herein as a Guarantor. Such successor Person thereupon may cause
to be signed any or all of the Note Guarantees to be endorsed upon all of the
Notes issuable hereunder which theretofore shall not have been signed by the
Company and delivered to the Trustee. All the Note Guarantees so issued will in
all respects have the same legal rank and benefit under this Indenture as the
Note Guarantees theretofore and thereafter issued in accordance with the terms
of this Indenture as though all of such Note Guarantees had been issued at the
date of the execution hereof.

         Except as set forth in Articles 4 and 5 hereof, and notwithstanding
clauses (a) and (b) above, nothing contained in this Indenture or in any of the
Notes will prevent any consolidation or merger of a Guarantor with or into the
Company or another Guarantor, or will prevent any sale or conveyance of the
property of a Guarantor as an entirety or substantially as an entirety to the
Company or another Guarantor.

Section 10.05 Releases Following Sale of Assets.

         In the event of any sale or other disposition of all or substantially
all of the assets of any Guarantor, by way of merger, consolidation or
otherwise, or a sale or other disposition of all to the Capital Stock of any
Guarantor, in each case to a Person that is not (either before or after giving
effect to such transactions) a Restricted Subsidiary of the Company, then such
Guarantor (in the event of a sale or other disposition, by way of merger,
consolidation or otherwise, of all of the capital stock of such Guarantor) or
the corporation acquiring the property (in the event of a sale or other
disposition of all or substantially all of the assets of such Guarantor) will be
released and relieved of any obligations under its Note Guarantee; provided that
the Net Proceeds of such sale or other disposition are applied in accordance
with the applicable provisions of this Indenture, including without limitation
Section 4.10 hereof. Upon delivery by the Company to the Trustee of an Officers'
Certificate and an Opinion of Counsel to the effect that such sale or other
disposition was made by the Company in accordance with the provisions of this
Indenture, including without limitation Section 4.10 hereof, the Trustee will
execute any documents reasonably required in order to evidence the release of
any Guarantor from its obligations under its Note Guarantee.

         Any Guarantor not released from its obligations under its Note
Guarantee will remain liable for the full amount of principal of and interest on
the Notes and for the other obligations of any Guarantor under this Indenture as
provided in this Article 10.

                                  ARTICLE 11.
                           SATISFACTION AND DISCHARGE

Section 11.01 Satisfaction and Discharge.

         This Indenture will be discharged and will cease to be of further
effect as to all Notes issued hereunder, when:

                  (1) either:

                           (a) all Notes that have been authenticated (except
         lost, stolen or destroyed Notes that have been replaced or paid and
         Notes for whose payment money has theretofore been deposited in trust
         and thereafter repaid to the Company) have been delivered to the
         Trustee for cancellation; or

                           (b) all Notes that have not been delivered to the
         Trustee for cancellation have become due and payable by reason of the
         making of a notice of redemption or otherwise or will become due and
         payable within one year and the Company or any Guarantor has
         irrevocably

                                       76
<PAGE>

         deposited or caused to be deposited with the Trustee as trust funds in
         trust solely for the benefit of the Holders, cash in U.S. dollars,
         non-callable Government Securities, or a combination thereof, in such
         amounts as will be sufficient without consideration of any reinvestment
         of interest, to pay and discharge the entire indebtedness on the Notes
         not delivered to the Trustee for cancellation for principal, premium
         and Liquidated Damages, if any, and accrued interest to the date of
         maturity or redemption;

                  (2) no Default or Event of Default has occurred and is
         continuing on the date of such deposit or will occur as a result of
         such deposit and such deposit will not result in a breach or violation
         of, or constitute a default under, any other instrument to which the
         Company or any Guarantor is a party or by which the Company or any
         Guarantor is bound;

                  (3) the Company or any Guarantor has paid or caused to be paid
         all sums payable by it under this Indenture; and

                  (4) the Company has delivered irrevocable instructions to the
         Trustee under this Indenture to apply the deposited money toward the
         payment of the Notes at maturity or the redemption date, as the case
         may be.

In addition, the Company must deliver an Officers' Certificate and an Opinion of
Counsel to the Trustee stating that all conditions precedent to satisfaction and
discharge have been satisfied.

         Notwithstanding the satisfaction and discharge of this Indenture, if
money has been deposited with the Trustee pursuant to subclause (b) of clause
(1) of this Section, the provisions of Section 11.02 and Section 8.06 will
survive. In addition, nothing in this Section 11.01 will be deemed to discharge
those provisions of Section 7.07 hereof, that, by their terms, survive the
satisfaction and discharge of this Indenture.

Section 11.02 Application of Trust Money.

         Subject to the provisions of Section 8.06, all money deposited with the
Trustee pursuant to Section 11.01 shall be held in trust and applied by it, in
accordance with the provisions of the Notes and this Indenture, to the payment,
either directly or through any Paying Agent (including the Company acting as its
own Paying Agent) as the Trustee may determine, to the Persons entitled thereto,
of the principal (and premium, if any) and interest for whose payment such money
has been deposited with the Trustee; but such money need not be segregated from
other funds except to the extent required by law.

         If the Trustee or Paying Agent is unable to apply any money or
Government Securities in accordance with Section 11.01 by reason of any legal
proceeding or by reason of any order or judgment of any court or governmental
authority enjoining, restraining or otherwise prohibiting such application, the
Company's and any Guarantor's obligations under this Indenture and the Notes
shall be revived and reinstated as though no deposit had occurred pursuant to
Section 11.01; provided that if the Company has made any payment of principal
of, premium, if any, or interest on any Notes because of the reinstatement of
its obligations, the Company shall be subrogated to the rights of the Holders of
such Notes to receive such payment from the money or Government Securities held
by the Trustee or Paying Agent.

                                  ARTICLE 12.
                                  MISCELLANEOUS

Section 12.01 Trust Indenture Act Controls.

                                       77
<PAGE>

         If any provision of this Indenture limits, qualifies or conflicts with
the duties imposed by TIA Section 318(c), the imposed duties will control.

Section 12.02 Notices.

         Any notice or communication by the Company, any Guarantor or the
Trustee to the others is duly given if in writing and delivered in Person or
mailed by first class mail (registered or certified, return receipt requested),
telex, telecopier or overnight air courier guaranteeing next day delivery, to
the others' address:

         If to the Company and/or any Guarantor:

         ACC Escrow Corp.
         14201 Wireless Way
         Oklahoma City, Oklahoma 73134
         Telecopier No.:  (405) 529-8515
         Attention:  Chief Financial Officer

         With a copy to:

         McAfee & Taft
         211 North Robinson, Suite 1000
         Oklahoma City, OK 73102
         Telecopier No.:  (405) 235-0439
         Attention:  Theodore M. Elam

         If to the Trustee:

         Bank of Oklahoma, National Association
         9520 North May, Suite 110
         Oklahoma City, Oklahoma  73120
         Telecopier No.: (405) 936-3964
         Attention:  Corporate Trust Group

         The Company, any Guarantor or the Trustee, by notice to the others may
designate additional or different addresses for subsequent notices or
communications.

         All notices and communications (other than those sent to Holders) will
be deemed to have been duly given: at the time delivered by hand, if personally
delivered; five Business Days after being deposited in the mail, postage
prepaid, if mailed; when answered back, if telexed; when receipt acknowledged,
if telecopied; and the next Business Day after timely delivery to the courier,
if sent by overnight air courier guaranteeing next day delivery.

         Any notice or communication to a Holder will be mailed by first class
mail, certified or registered, return receipt requested, or by overnight air
courier guaranteeing next day delivery to its address shown on the register kept
by the Registrar. Any notice or communication will also be so mailed to any
Person described in TIA Section 313(c), to the extent required by the TIA.
Failure to mail a notice or communication to a Holder or any defect in it will
not affect its sufficiency with respect to other Holders.

         If a notice or communication is mailed in the manner provided above
within the time prescribed, it is duly given, whether or not the addressee
receives it.

                                       78
<PAGE>

         If the Company mails a notice or communication to Holders, it will mail
a copy to the Trustee and each Agent at the same time.

Section 12.03 Communication by Holders of Notes with Other Holders of Notes.

         Holders may communicate pursuant to TIA Section 312(b) with other
Holders with respect to their rights under this Indenture or the Notes. The
Company, the Trustee, the Registrar and anyone else shall have the protection of
TIA Section 312(c).

Section 12.04 Certificate and Opinion as to Conditions Precedent.

         Upon any request or application by the Company to the Trustee to take
any action under this Indenture, the Company shall furnish to the Trustee:

                  (1) an Officers' Certificate in form and substance reasonably
         satisfactory to the Trustee (which must include the statements set
         forth in Section 12.05 hereof) stating that, in the opinion of the
         signers, all conditions precedent and covenants, if any, provided for
         in this Indenture relating to the proposed action have been satisfied;
         and

                  (2) an Opinion of Counsel in form and substance reasonably
         satisfactory to the Trustee (which must include the statements set
         forth in Section 12.05 hereof) stating that, in the opinion of such
         counsel, all such conditions precedent and covenants have been
         satisfied.

Section 12.05 Statements Required in Certificate or Opinion.

         Each certificate or opinion with respect to compliance with a condition
or covenant provided for in this Indenture (other than a certificate provided
pursuant to TIA Section 314(a)(4)) must comply with the provisions of TIA
Section 314(e) and must include:

                  (1) a statement that the Person making such certificate or
         opinion has read such covenant or condition;

                  (2) a brief statement as to the nature and scope of the
         examination or investigation upon which the statements or opinions
         contained in such certificate or opinion are based;

                  (3) a statement that, in the opinion of such Person, he or she
         has made such examination or investigation as is necessary to enable
         him or her to express an informed opinion as to whether or not such
         covenant or condition has been satisfied; and

                  (4) a statement as to whether or not, in the opinion of such
         Person, such condition or covenant has been satisfied.

Section 12.06 Rules by Trustee and Agents.

         The Trustee may make reasonable rules for action by or at a meeting of
Holders. The Registrar or Paying Agent may make reasonable rules and set
reasonable requirements for its functions.

Section 12.07 No Personal Liability of Directors, Officers, Employees and
Stockholders.

         No past, present or future director, officer, employee, incorporator or
stockholder of the Company or any Guarantor, as such, will have any liability
for any obligations of the Company or the Guarantors

                                       79
<PAGE>

under the Notes, this Indenture, the Note Guarantees or for any claim based on,
in respect of, or by reason of, such obligations or their creation. Each Holder
of Notes by accepting a Note waives and releases all such liability. The waiver
and release are part of the consideration for issuance of the Notes. The waiver
may not be effective to waive liabilities under the federal securities laws.

Section 12.08 Governing Law.

         THE INTERNAL LAW OF THE STATE OF NEW YORK WILL GOVERN AND BE USED TO
CONSTRUE THIS INDENTURE, THE NOTES AND THE NOTE GUARANTEES WITHOUT GIVING EFFECT
TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION
OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY.

Section 12.09     No Adverse Interpretation of Other Agreements.

         This Indenture may not be used to interpret any other indenture, loan
or debt agreement of the Company or its Subsidiaries or of any other Person. Any
such indenture, loan or debt agreement may not be used to interpret this
Indenture.

Section 12.10 Successors.

         All agreements of the Company in this Indenture and the Notes will bind
its successors. All agreements of the Trustee in this Indenture will bind its
successors. All agreements of each Guarantor in this Indenture will bind its
successors, except as otherwise provided in Section 10.05.

Section 12.11 Severability.

         In case any provision in this Indenture or in the Notes is invalid,
illegal or unenforceable, the validity, legality and enforceability of the
remaining provisions will not in any way be affected or impaired thereby.

Section 12.12 Counterpart Originals.

         The parties may sign any number of copies of this Indenture. Each
signed copy will be an original, but all of them together represent the same
agreement.

Section 12.13 Table of Contents, Headings, etc.

         The Table of Contents, Cross-Reference Table and Headings of the
Articles and Sections of this Indenture have been inserted for convenience of
reference only, are not to be considered a part of this Indenture and will in no
way modify or restrict any of the terms or provisions hereof.

                         [Signatures on following page]

                                       80
<PAGE>

                                   SIGNATURES

Dated as of August 8, 2003
                                      ACC ESCROW CORP.

                                      By:   /s/ BRUCE R. KNOOIHUIZEN
                                            -----------------------------------
                                            Name: Bruce R. Knooihuizen
                                            Title: Vice President

Attest:

/s/ RONALD L. RIPLEY
-----------------------------------
Name: Ronald L. Ripley
Title: Vice President

                                      BANK OF OKLAHOMA, NATIONAL ASSOCIATION

                                      By:   /s/ TIM COOK
                                            -----------------------------------
                                            Name: Tim Cook
                                            Title: Vice President

Attest:

/s/ RACHEL WRIGHT
-----------------------------------
Authorized Signatory
Date: August 8, 2003

                                       81
<PAGE>

                                   SCHEDULE I

                             SCHEDULE OF GUARANTORS

         The following schedule lists each Guarantor under the Indenture as of
the date of the Indenture:

                                       I-1
<PAGE>

                                                                      EXHIBIT A1

                                 [Face of Note]
-------------------------------------------------------------------------------

                                                        CUSIP/CINS
                                                                   ------------

                 10% [Series A] [Series B] Senior Notes due 2011

No.                                                               $
    ---                                                            ------------

                                ACC ESCROW CORP.

promises to pay to CEDE & CO.

or registered assigns,

the principal sum of
                     ----------------------------------------------------------

Dollars on              , 2011.
           -------------

Interest Payment Dates:               and
                         ------------     ------------

Record Dates:               and
               ------------     ------------

Dated:  August 8, 2003

                                        ACC ESCROW CORP.

                                        By:
                                              ---------------------------------
                                              Name:
                                              Title:

                                        By:
                                              ---------------------------------
                                              Name:
                                              Title:

This is one of the Notes referred to
in the within-mentioned Indenture:

BANK OF OKLAHOMA, NATIONAL ASSOCIATION
  as Trustee

By:
     --------------------------------------------
                Authorized Signatory

--------------------------------------------------------------------------------

                                      A1-1
<PAGE>

                                 [Back of Note]
                 10% [Series A] [Series B] Senior Notes due 2011

[Insert the Global Note Legend, if applicable pursuant to the provisions of the
Indenture]

[Insert the Private Placement Legend, if applicable pursuant to the provisions
of the Indenture]

         Capitalized terms used herein have the meanings assigned to them in the
Indenture referred to below unless otherwise indicated.

                  (1) INTEREST. ACC Escrow Corp., a Delaware corporation (the
         "Company"), promises to pay interest on the principal amount of this
         Note at 10% per annum from August 8, 2003 until maturity and shall pay
         the Liquidated Damages, if any, payable pursuant to Section 5 of the
         Registration Rights Agreement referred to below. The Company will pay
         interest and Liquidated Damages, if any, semi-annually in arrears on
         February 1 and August 1 of each year, or if any such day is not a
         Business Day, on the next succeeding Business Day (each, an "Interest
         Payment Date"). Interest on the Notes will accrue from the most recent
         date to which interest has been paid or, if no interest has been paid,
         from the date of issuance; provided that if there is no existing
         Default in the payment of interest, and if this Note is authenticated
         between a record date referred to on the face hereof and the next
         succeeding Interest Payment Date, interest shall accrue from such next
         succeeding Interest Payment Date; provided, further, that the first
         Interest Payment Date shall be February 1, 2004. The Company will pay
         interest (including post-petition interest in any proceeding under any
         Bankruptcy Law) on overdue principal and premium, if any, from time to
         time on demand at a rate that is 1% per annum in excess of the rate
         then in effect; it will pay interest (including post-petition interest
         in any proceeding under any Bankruptcy Law) on overdue installments of
         interest and Liquidated Damages, if any, (without regard to any
         applicable grace periods) from time to time on demand at the same rate
         to the extent lawful. Interest will be computed on the basis of a
         360-day year of twelve 30-day months.

                  (2) METHOD OF PAYMENT. The Company will pay interest on the
         Notes (except defaulted interest) and Liquidated Damages, if any, to
         the Persons who are registered Holders of Notes at the close of
         business on the January 15 or July 15 next preceding the Interest
         Payment Date, even if such Notes are canceled after such record date
         and on or before such Interest Payment Date, except as provided in
         Section 2.12 of the Indenture with respect to defaulted interest. The
         Notes will be payable as to principal, premium and Liquidated Damages,
         if any, and interest at the office or agency of the Company maintained
         for such purpose within or without the City and State of New York, or,
         at the option of the Company, payment of interest and Liquidated
         Damages, if any, may be made by check mailed to the Holders at their
         addresses set forth in the register of Holders; provided that payment
         by wire transfer of immediately available funds will be required with
         respect to principal of and interest, premium and Liquidated Damages,
         if any, on, all Global Notes and all other Notes the Holders of which
         will have provided wire transfer instructions to the Company or the
         Paying Agent. Such payment will be in such coin or currency of the
         United States of America as at the time of payment is legal tender for
         payment of public and private debts.

                  (3) PAYING AGENT AND REGISTRAR. Initially, Bank of Oklahoma,
         National Association, the Trustee under the Indenture, will act as
         Paying Agent and Registrar. The Company may change any Paying Agent or
         Registrar without notice to any Holder. The Company or any of its
         Subsidiaries may act in any such capacity.

                                      A1-2
<PAGE>

                  (4) INDENTURE. The Company issued the Notes under an Indenture
         dated as of August 8, 2003 (the "Indenture") between the Company and
         the Trustee. The terms of the Notes include those stated in the
         Indenture and those made part of the Indenture by reference to the
         Trust Indenture Act of 1939, as amended (15 U.S. Code Sections
         77aaa-77bbbb). The Notes are subject to all such terms, and Holders are
         referred to the Indenture and such Act for a statement of such terms.
         To the extent any provision of this Note conflicts with the express
         provisions of the Indenture, the provisions of the Indenture shall
         govern and be controlling. The Notes are general unsecured obligations
         of the Company limited in aggregate principal amount to $900,000,000
         issued on the Issue Date (the "Initial Notes") and an unlimited
         aggregate additional principal amount issuable thereafter under the
         terms of the Indenture.

                  (5) OPTIONAL REDEMPTION.

         (a) Except as set forth in subparagraph (b) of this Paragraph 5, the
Company will not have the option to redeem the Notes prior to August 1, 2007.
Thereafter, the Company will have the option to redeem the Notes, in whole or in
part, upon not less than 30 nor more than 60 days' notice, at the redemption
prices (expressed as percentages of principal amount) set forth below plus
accrued and unpaid interest and Liquidated Damages, if any, on the notes
redeemed, to the applicable redemption date, if redeemed during the twelve-month
period beginning on August 1 of the years indicated below, subject to the rights
of noteholders on the relevant record date to receive interest on the relevant
interest payment date:

<Table>
<Caption>
        Year                                                                                  Percentage
        ----                                                                                  ----------
<S>                                                                                           <C>
        2007.............................................................................       105.000%
        2008.............................................................................       102.500%
        2009 and thereafter..............................................................       100.000%
</Table>

         (b) Notwithstanding the provisions of subparagraph (a) of this
Paragraph 5, at any time prior to August 1, 2007, the Company may redeem a
portion of the outstanding Notes, so long as at least $600.0 million in
aggregate principal amount of Notes (including any additional Notes subsequently
issued under the Indenture) remains outstanding after the redemption, at a
redemption price equal to 110.000% of the principal amount, plus accrued and
unpaid interest and Liquidated Damages, if any, to the redemption date, with the
net cash proceeds of one or more Equity Offerings (other than Disqualified
Stock); provided that the redemption occurs within 60 days of the date of the
closing of such Equity Offering.

                  (6) MANDATORY REDEMPTION.

                           (a) Except as set forth in subparagraph (b) of this
         Paragraph 6 or under Sections 4.10 and 4.15 of the Indenture, the
         Company shall not be required to make mandatory redemption or sinking
         fund payments with respect to the Notes.

                           (b) In accordance with the terms and conditions of
         the Escrow Agreement, and using the Deposit, Escrow Corp. shall redeem
         all and not less than all of the Initial Notes on November 8, 2003, or
         such earlier date as Escrow Corp. shall elect (the "Special Mandatory
         Redemption Date"), if the Escrow Corp. Merger has not occurred on or
         prior to the Special Mandatory Redemption Date, at a redemption price
         equal to 100% of the aggregate principal amount of the Notes, plus
         accrued and unpaid interest thereon through and including the Special
         Mandatory Redemption Date or through November 6, 2003 in the event the
         Special Mandatory Redemption Date is November 7 or November 8, 2003.
         Upon the closing of the Escrow Corp. Merger on or before the Special
         Mandatory Redemption Date, the foregoing provisions of this

                                      A1-3
<PAGE>

         subparagraph (b) shall be null and void. The Special Mandatory
         Redemption Date shall be no more than two days after the date on which
         the parties to the Escrow Agreement decide to terminate the Escrow
         Agreement.

                  (7) REPURCHASE AT OPTION OF HOLDER.

                           (a) If there is a Change of Control, the Company will
         be required to make an offer (a "Change of Control Offer") to
         repurchase all or any part (equal to $1,000 or an integral multiple
         thereof) of each Holder's Notes at a purchase price equal to 101% of
         the aggregate principal amount of Notes repurchased plus accrued and
         unpaid interest and Liquidated Damages, if any, on the Notes
         repurchased, to the date of purchase, subject to the rights of
         noteholders on the relevant record date to receive interest due on the
         relevant interest payment date (the "Change of Control Payment").
         Within 10 business days following any Change of Control, the Company
         will mail a notice to each Holder setting forth the procedures
         governing the Change of Control Offer as required by the Indenture.

                           (b) If the Company or a Restricted Subsidiary
         consummates any Asset Sales, which the aggregate amount of Excess
         Proceeds exceeds $25.0 million, the Company will commence an offer to
         all Holders of Notes and all holders of other Indebtedness that is pari
         passu with the Notes containing provisions similar to those set forth
         in the Indenture with respect to offers to purchase or redeem with the
         proceeds of sales of assets (an "Asset Sale Offer") pursuant to Section
         3.09 of the Indenture to purchase the maximum principal amount of Notes
         (including any Additional Notes) and other pari passu Indebtedness that
         may be purchased out of the Excess Proceeds at an offer price in cash
         in an amount equal to 100% of principal amount plus accrued and unpaid
         interest and Liquidated Damages, if any, to the date of purchase, in
         accordance with the procedures set forth in the Indenture. To the
         extent that the aggregate amount of Notes (including any Additional
         Notes) and other pari passu Indebtedness tendered pursuant to an Asset
         Sale Offer is less than the Excess Proceeds, the Company may use such
         excess for any purpose not otherwise prohibited by the Indenture. If
         the aggregate principal amount of Notes and other pari passu
         Indebtedness surrendered by holders thereof exceeds the amount of
         Excess Proceeds, the Trustee shall select the Notes and other pari
         passu Indebtedness to be purchased on a pro rata basis. Holders of
         Notes that are the subject of an offer to purchase will receive an
         Asset Sale Offer from the Company prior to any related purchase date
         and may elect to have such Notes purchased by completing the form
         entitled "Option of Holder to Elect Purchase" on the reverse of the
         Notes.

                  (8) NOTICE OF REDEMPTION. Notice of redemption will be mailed
         at least 30 days but not more than 60 days before the redemption date
         to each Holder whose Notes are to be redeemed at its registered
         address. Notes in denominations larger than $1,000 may be redeemed in
         part but only in whole multiples of $1,000, unless all of the Notes
         held by a Holder are to be redeemed. On and after the redemption date
         interest ceases to accrue on Notes or portions thereof called for
         redemption.

                  (9) DENOMINATIONS, TRANSFER, EXCHANGE. The Notes are in
         registered form without coupons in denominations of $1,000 and integral
         multiples of $1,000. The transfer of Notes may be registered and Notes
         may be exchanged as provided in the Indenture. The Registrar and the
         Trustee may require a Holder, among other things, to furnish
         appropriate endorsements and transfer documents and the Company may
         require a Holder to pay any taxes and fees required by law or permitted
         by the Indenture. The Company need not exchange or register the
         transfer of any Note or portion of a Note selected for redemption,
         except for the unredeemed portion of any Note being redeemed in part.
         Also, the Company need not exchange or register the transfer of

                                      A1-4
<PAGE>

         any Notes for a period of 15 days before a selection of Notes to be
         redeemed or during the period between a record date and the
         corresponding Interest Payment Date.

                  (10) PERSONS DEEMED OWNERS. The registered Holder of a Note
         may be treated as its owner for all purposes.

                  (11) AMENDMENT, SUPPLEMENT AND WAIVER. Subject to certain
         exceptions, the Indenture, the Note Guarantees or the Notes may be
         amended or supplemented with the consent of the Holders of at least a
         majority in principal amount of the then outstanding Notes and
         Additional Notes, if any, voting as a single class, and any existing
         default or compliance with any provision of the Indenture, the Note
         Guarantees or the Notes may be waived with the consent of the Holders
         of a majority in principal amount of the then outstanding Notes and
         Additional Notes, if any, voting as a single class. Without the consent
         of any Holder of a Note, the Indenture, the Note Guarantees or the
         Notes may be amended or supplemented to cure any ambiguity, defect or
         inconsistency, to provide for uncertificated Notes in addition to or in
         place of certificated Notes, to provide for the assumption of the
         Company's or any Guarantor's obligations to Holders of the Notes in
         case of a merger or consolidation, to make any change that would
         provide any additional rights or benefits to the Holders of the Notes
         or that does not adversely affect the legal rights under the Indenture
         of any such Holder, to comply with the requirements of the SEC in order
         to effect or maintain the qualification of the Indenture under the
         Trust Indenture Act, to provide for the Issuance of Additional Notes in
         accordance with the limitations set forth in the Indenture, or to allow
         any Guarantor to execute a supplemental indenture to the Indenture
         and/or a Note Guarantee with respect to the Notes.

                  (12) DEFAULTS AND REMEDIES. Events of Default include: (i)
         default for 30 days in the payment when due of interest on, or
         Liquidated Damages with respect to, the Notes; (ii) default in payment
         when due of principal of or premium, if any, on the Notes, (iii)
         failure by the Company or any of its Restricted Subsidiaries to comply
         with Section 3.08, 4.07, 4.09, 4.10, 4.15 or 5.01 of the Indenture;
         (iv) failure by the Company or any of its Restricted Subsidiaries for
         60 days after notice to the Company by the Trustee or the Holders of at
         least 25% in principal amount of the Notes then outstanding voting as a
         single class to observe or perform any other covenant, representation,
         warranty or other agreement in the Indenture or the Notes; (v) default
         under any mortgage, indenture or instrument under which there may be
         issued or by which there may be secured or evidenced any Indebtedness
         for money borrowed by the Company or any of its Restricted Subsidiaries
         (or the payment of which is guaranteed by the Company or any of its
         Restricted Subsidiaries), whether such Indebtedness or guarantee now
         exists, or is created after the date of the Indenture, if that default
         (A) is caused by a failure to pay principal of, or interest or premium,
         if any, on such Indebtedness prior to the expiration of the grace
         period provided in such Indebtedness on the date of such default (a
         "Payment Default"); or (B) results in the acceleration of such
         Indebtedness prior to its express maturity, and in each case, the
         principal amount of any such Indebtedness, together with the principal
         amount of any other such Indebtedness under which there has been a
         Payment Default or the maturity of which has been so accelerated,
         aggregates $25.0 million or more; (vi) a final judgment or final
         judgments for the payment of money are entered by a court or courts of
         competent jurisdiction against the Company or any of its Restricted
         Subsidiaries or any group of Subsidiaries that, taken as a whole, would
         constitute a Restricted Subsidiary, which judgment or judgments are not
         paid, discharged or stayed for a period of 60 days; provided that the
         aggregate of all such undischarged judgments exceeds $35.0 million;
         (vii) certain events of bankruptcy or insolvency with respect to the
         Company or any of its Significant Subsidiaries, or any group of
         Subsidiaries, that, taken as a whole, would constitute a Significant
         Subsidiary pursuant to or within the meaning of Bankruptcy Law; (viii)
         failure of the Escrow Agreement, at any time, to be in full force and
         effect (unless the Escrow Deposit is

                                      A1-5
<PAGE>

         released by the escrow agent) or any contest by the Company or any of
         its Subsidiaries or Parent of the validity or enforceability of the
         Escrow Agreement; (ix) failure by Escrow Corp. to redeem the Notes
         pursuant to the provisions described in Section 3.08 of the Indenture
         and (x) except as permitted by the Indenture, any Note Guarantee shall
         be held in any judicial proceeding to be unenforceable or invalid or
         shall cease for any reason to be in full force and effect or any
         Guarantor or any Person acting on its behalf shall deny or disaffirm
         its obligations under such Guarantor's Note Guarantee. If any Event of
         Default occurs and is continuing, the Trustee or the Holders of at
         least 25% in principal amount of the then outstanding Notes may declare
         all the Notes to be due and payable. Notwithstanding the foregoing, in
         the case of an Event of Default arising from certain events of
         bankruptcy or insolvency, all outstanding Notes will become due and
         payable without further action or notice. Holders may not enforce the
         Indenture or the Notes except as provided in the Indenture. Subject to
         certain limitations, Holders of a majority in principal amount of the
         then outstanding Notes may direct the Trustee in its exercise of any
         trust or power. The Trustee may withhold from Holders of the Notes
         notice of any continuing Default or Event of Default (except a Default
         or Event of Default relating to the payment of principal or interest)
         if it determines that withholding notice is in their interest. The
         Holders of a majority in aggregate principal amount of the Notes then
         outstanding by notice to the Trustee may on behalf of the Holders of
         all of the Notes waive any existing Default or Event of Default and its
         consequences under the Indenture except a continuing Default or Event
         of Default in the payment of interest on, or the principal of, the
         Notes. The Company is required to deliver to the Trustee annually a
         statement regarding compliance with the Indenture, and the Company is
         required upon becoming aware of any Default or Event of Default, to
         deliver to the Trustee a statement specifying such Default or Event of
         Default.

                  (13) TRUSTEE DEALINGS WITH COMPANY. The Trustee, in its
         individual or any other capacity, may make loans to, accept deposits
         from, and perform services for the Company or its Affiliates, and may
         otherwise deal with the Company or its Affiliates, as if it were not
         the Trustee.

                  (14) NO RECOURSE AGAINST OTHERS. A director, officer,
         employee, incorporator or stockholder, of the Company or any of the
         Guarantors, as such, will not have any liability for any obligations of
         the Company or such Guarantor under the Notes, the Note Guarantees or
         the Indenture or for any claim based on, in respect of, or by reason
         of, such obligations or their creation. Each Holder by accepting a Note
         waives and releases all such liability. The waiver and release are part
         of the consideration for the issuance of the Notes.

                  (15) AUTHENTICATION. This Note will not be valid until
         authenticated by the manual signature of the Trustee or an
         authenticating agent.

                  (16) ABBREVIATIONS. Customary abbreviations may be used in the
         name of a Holder or an assignee, such as: TEN COM (= tenants in
         common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants
         with right of survivorship and not as tenants in common), CUST (=
         Custodian), and U/G/M/A (= Uniform Gifts to Minors Act).

                  (17) ADDITIONAL RIGHTS OF HOLDERS OF RESTRICTED GLOBAL NOTES
         AND RESTRICTED DEFINITIVE NOTES. In addition to the rights provided to
         Holders of Notes under the Indenture, Holders of Restricted Global
         Notes and Restricted Definitive Notes will have all the rights set
         forth in the Registration Rights Agreement dated as of August 8, 2003,
         among the Company, the Guarantors and the other parties named on the
         signature pages thereof or, in the case of Additional Notes, Holders of
         Restricted Global Notes and Restricted Definitive Notes will have the
         rights set forth in one or more registration rights agreements, if any,
         among the Company, the

                                      A1-6
<PAGE>

         Guarantors and the other parties thereto, relating to rights given by
         the Company and the Guarantors to the purchasers of any Additional
         Notes (collectively, the "Registration Rights Agreement").

                  (18) CUSIP NUMBERS. Pursuant to a recommendation promulgated
         by the Committee on Uniform Security Identification Procedures, the
         Company has caused CUSIP numbers to be printed on the Notes and the
         Trustee may use CUSIP numbers in notices of redemption as a convenience
         to Holders. No representation is made as to the accuracy of such
         numbers either as printed on the Notes or as contained in any notice of
         redemption and reliance may be placed only on the other identification
         numbers placed thereon.

         The Company will furnish to any Holder upon written request and without
charge a copy of the Indenture and/or the Registration Rights Agreement.
Requests may be made to:

ACC Escrow Corp.
14201 Wireless Way
Oklahoma City, Oklahoma 73134

Attention:
            --------------

                                      A1-7
<PAGE>
                                 ASSIGNMENT FORM

         To assign this Note, fill in the form below:

(I) or (we) assign and transfer this Note to:
                                             ---------------------------------
                                               (Insert assignee's legal name)

--------------------------------------------------------------------------------
                  (Insert assignee's soc. sec. or tax I.D. no.)

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
              (Print or type assignee's name, address and zip code)

and irrevocably appoint
                        -------------------------------------------------------
to transfer this Note on the books of the Company. The agent may substitute
another to act for him.

Date:
       ---------------
                              Your Signature:
                                             ----------------------------------
                                             (Sign exactly as your name appears
                                             on the face of this Note)

Signature Guarantee*:
                       -------------------------

* Participant in a recognized Signature Guarantee Medallion Program (or other
signature guarantor acceptable to the Trustee).

                                      A1-8
<PAGE>

                       OPTION OF HOLDER TO ELECT PURCHASE

         If you want to elect to have this Note purchased by the Company
pursuant to Section 4.10 or 4.15 of the Indenture, check the appropriate box
below:

                Section 4.10              Section 4.15

         If you want to elect to have only part of the Note purchased by the
Company pursuant to Section 4.10 or Section 4.15 of the Indenture, state the
amount you elect to have purchased:

                                $
                                 ---------------
Date:
       ---------------
                              Your Signature:
                                             ----------------------------------
                                             (Sign exactly as your name appears
                                             on the face of this Note)

                              Tax Identification No.:
                                                     --------------------------

Signature Guarantee*:
                       -------------------------

* Participant in a recognized Signature Guarantee Medallion Program (or other
signature guarantor acceptable to the Trustee).

                                      A1-9
<PAGE>

             SCHEDULE OF EXCHANGES OF INTERESTS IN THE GLOBAL NOTE*

         The following exchanges of a part of this Global Note for an interest
in another Global Note or for a Definitive Note, or exchanges of a part of
another Global Note or Definitive Note for an interest in this Global Note, have
been made:

<Table>
<Caption>
                                                                           Principal Amount
                           Amount of decrease    Amount of increase in    of this Global Note       Signature of
                           in Principal Amount      Principal Amount        following such       authorized officer
                                   of                      of                  decrease             of Trustee or
    Date of Exchange        this Global Note        this Global Note         (or increase)            Custodian
    ----------------       -------------------   ---------------------    -------------------    ------------------
<S>                         <C>                     <C>                    <C>                   <C>
</Table>

* This schedule should be included only if the Note is issued in global form.

                                      A1-10
<PAGE>

                                                                     EXHIBIT A2

                  [Face of Regulation S Temporary Global Note]
--------------------------------------------------------------------------------

                                                           CUSIP/CINS
                                                                      ----------

                 10% [Series A] [Series B] Senior Notes due 2011

No.                                                                  $
    ---                                                               ----------

                                ACC ESCROW CORP.

promises to pay to CEDE & CO.

or registered assigns,

the principal sum of
                     ----------------------------------------------------------

Dollars on                , 20   .
           ---------------    ---

Interest Payment Dates:               and
                         ------------     ------------
Record Dates:               and
               ------------     ------------

Dated:  August 8, 2003

                                        ACC ESCROW CORP.

                                        By:
                                              ---------------------------------
                                              Name:
                                              Title:

                                        By:
                                              ---------------------------------
                                              Name:
                                              Title:

                                                        (SEAL)

This is one of the Notes referred to
in the within-mentioned Indenture:

BANK OF OKLAHOMA, NATIONAL ASSOCIATION
  as Trustee

By:
     ----------------------------------
          Authorized Signatory

--------------------------------------------------------------------------------

<PAGE>

                  [Back of Regulation S Temporary Global Note]
                 10% [Series A] [Series B] Senior Notes due 2011

THE RIGHTS ATTACHING TO THIS REGULATION S TEMPORARY GLOBAL NOTE, AND THE
CONDITIONS AND PROCEDURES GOVERNING ITS EXCHANGE FOR CERTIFICATED NOTES, ARE AS
SPECIFIED IN THE INDENTURE (AS DEFINED HEREIN). NEITHER THE HOLDER NOR THE
BENEFICIAL OWNERS OF THIS REGULATION S TEMPORARY GLOBAL NOTE SHALL BE ENTITLED
TO RECEIVE PAYMENT OF INTEREST HEREON.

THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE
GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL
OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES
EXCEPT THAT (1) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED
PURSUANT TO SECTION 2.06 OF THE INDENTURE, (2) THIS GLOBAL NOTE MAY BE EXCHANGED
IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.06(a) OF THE INDENTURE, (3) THIS
GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION
2.11 OF THE INDENTURE AND (IV) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A
SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF ACC ESCROW CORP.

UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR NOTES IN DEFINITIVE
FORM, THIS NOTE MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A
NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR
ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A
SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY. UNLESS THIS
CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST
COMPANY (55 WATER STREET, NEW YORK, NEW YORK) ("DTC"), TO THE COMPANY OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE
ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS MAY BE
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO
CEDE & CO. OR SUCH OTHER ENTITY AS MAY BE REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

THE SECURITY (OR ITS PREDECESSOR) EVIDENCED HEREBY WAS ORIGINALLY ISSUED IN A
TRANSACTION EXEMPT FROM REGISTRATION UNDER SECTION 5 OF THE UNITED STATES
SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND THE SECURITY
EVIDENCED HEREBY MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE
ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH
PURCHASER OF THE SECURITY EVIDENCED HEREBY IS HEREBY NOTIFIED THAT THE SELLER
MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE
SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER. THE HOLDER OF THE SECURITY
EVIDENCED HEREBY AGREES FOR THE BENEFIT OF THE ISSUER THAT (A) SUCH SECURITY MAY
BE RESOLD, PLEDGED OR OTHERWISE TRANSFERRED ONLY (1)(a) IN THE UNITED STATES TO
A PERSON WHO THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER
(AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) IN A TRANSACTION MEETING THE
REQUIREMENTS OF RULE 144A, (b) OUTSIDE THE UNITED STATES IN AN OFFSHORE

                                      A2-2
<PAGE>

TRANSACTION IN ACCORDANCE WITH RULE 904 UNDER THE SECURITIES ACT, (c) IN A
TRANSACTION MEETING THE REQUIREMENTS OF RULE 144 UNDER THE SECURITIES ACT, (d)
TO AN INSTITUTIONAL "ACCREDITED INVESTOR" (AS DEFINED IN RULE 501 (a)(1), (2),
(3) OR (7) OF THE SECURITIES ACT (AN "INSTITUTIONAL ACCREDITED INVESTOR")) THAT,
PRIOR TO SUCH TRANSFER, FURNISHES THE TRUSTEE A SIGNED LETTER CONTAINING CERTAIN
REPRESENTATIONS AND AGREEMENTS (THE FORM OF WHICH CAN BE OBTAINED FROM THE
TRUSTEE) AND, IF SUCH TRANSFER IS IN RESPECT OF AN AGGREGATE PRINCIPAL AMOUNT OF
NOTES LESS THAN $250,000, AN OPINION OF COUNSEL ACCEPTABLE TO THE ISSUER THAT
SUCH TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT OR (e) IN ACCORDANCE WITH
ANOTHER EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT (AND
BASED UPON AN OPINION OF COUNSEL IF THE ISSUER SO REQUESTS), (2) TO THE ISSUER
OR (3) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT AND, IN EACH CASE, IN
ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES
OR ANY OTHER APPLICABLE JURISDICTION AND (B) THE HOLDER WILL, AND EACH
SUBSEQUENT HOLDER IS REQUIRED TO, NOTIFY ANY PURCHASER FROM IT OF THE SECURITY
EVIDENCED HEREBY OF THE RESALE RESTRICTIONS SET FORTH IN (A) ABOVE.

         Capitalized terms used herein have the meanings assigned to them in the
Indenture referred to below unless otherwise indicated.

                  (1) INTEREST. ACC Escrow Corp., a Delaware corporation (the
         "Company"), promises to pay interest on the principal amount of this
         Note at 10% per annum from August 8, 2003 until maturity and shall pay
         the Liquidated Damages, if any, payable pursuant to Section 5 of the
         Registration Rights Agreement referred to below. The Company will pay
         interest and Liquidated Damages, if any, semi-annually in arrears on
         February 1 and August 1 of each year, or if any such day is not a
         Business Day, on the next succeeding Business Day (each, an "Interest
         Payment Date"). Interest on the Notes will accrue from the most recent
         date to which interest has been paid or, if no interest has been paid,
         from the date of issuance; provided that if there is no existing
         Default in the payment of interest, and if this Note is authenticated
         between a record date referred to on the face hereof and the next
         succeeding Interest Payment Date, interest shall accrue from such next
         succeeding Interest Payment Date; provided, further, that the first
         Interest Payment Date shall be February 1, 2004. The Company will pay
         interest (including post-petition interest in any proceeding under any
         Bankruptcy Law) on overdue principal and premium, if any, from time to
         time on demand at a rate that is 1% per annum in excess of the rate
         then in effect; it will pay interest (including post-petition interest
         in any proceeding under any Bankruptcy Law) on overdue installments of
         interest and Liquidated Damages, if any, (without regard to any
         applicable grace periods) from time to time on demand at the same rate
         to the extent lawful. Interest will be computed on the basis of a
         360-day year of twelve 30-day months.

         Until this Regulation S Temporary Global Note is exchanged for one or
more Regulation S Permanent Global Notes, the Holder hereof shall not be
entitled to receive payments of interest hereon; until so exchanged in full,
this Regulation S Temporary Global Note shall in all other respects be entitled
to the same benefits as other Notes under the Indenture.

                  (2) METHOD OF PAYMENT. The Company will pay interest on the
         Notes (except defaulted interest) and Liquidated Damages, if any, to
         the Persons who are registered Holders of Notes at the close of
         business on the January 15 or July 15 next preceding the Interest
         Payment Date, even if such Notes are canceled after such record date
         and on or before such Interest Payment Date, except as provided in
         Section 2.12 of the Indenture with respect to defaulted interest. The
         Notes will be payable as to principal, premium, interest and Liquidated
         Damages, if

                                      A2-3
<PAGE>

         any, at the office or agency of the Company maintained for such purpose
         within or without the City and State of New York, or, at the option of
         the Company, payment of interest and Liquidated Damages, if any, may be
         made by check mailed to the Holders at their addresses set forth in the
         register of Holders; provided that payment by wire transfer of
         immediately available] funds will be required with respect to principal
         of and interest, premium and Liquidated Damages, if any, on, all Global
         Notes and all other Notes the Holders of which will have provided wire
         transfer instructions to the Company or the Paying Agent. Such payment
         will be in such coin or currency of the United States of America as at
         the time of payment is legal tender for payment of public and private
         debts.

                  (3) PAYING AGENT AND REGISTRAR. Initially, Bank of Oklahoma,
         National Association, the Trustee under the Indenture, will act as
         Paying Agent and Registrar. The Company may change any Paying Agent or
         Registrar without notice to any Holder. The Company or any of its
         Subsidiaries may act in any such capacity.

                  (4) INDENTURE. The Company issued the Notes under an Indenture
         dated as of August 8, 2003 (the "Indenture") between the Company and
         the Trustee. The terms of the Notes include those stated in the
         Indenture and those made part of the Indenture by reference to the
         Trust Indenture Act of 1939, as amended (15 U.S. Code Sections
         77aaa-77bbbb). The Notes are subject to all such terms, and Holders are
         referred to the Indenture and such Act for a statement of such terms.
         To the extent any provision of this Note conflicts with the express
         provisions of the Indenture, the provisions of the Indenture shall
         govern and be controlling. The Notes are general unsecured obligations
         of the Company limited in aggregate principal amount to $900,000,000
         issued on the Issue Date (the "Initial Notes") and an unlimited
         aggregate additional principal amount issuable thereafter under the
         terms of the Indenture.

                  (5) OPTIONAL REDEMPTION.

         (c) Except as set forth in subparagraph (b) of this Paragraph 5, the
Company will not have the option to redeem the Notes prior to August 1, 2007.
Thereafter, the Company will have the option to redeem the Notes, in whole or in
part, upon not less than 30 nor more than 60 days' notice, at the redemption
prices (expressed as percentages of principal amount) set forth below plus
accrued and unpaid interest and Liquidated Damages, if any, on the notes
redeemed, to the applicable redemption date, if redeemed during the twelve-month
period beginning on August 1 of the years indicated below, subject to the rights
of noteholders on the relevant record date to receive interest on the relevant
interest payment date:

<Table>
<Caption>
        Year                                                                                  Percentage
        ----                                                                                  ----------
<S>                                                                                           <C>
        2007.............................................................................     105.000%
        2008.............................................................................     102.500%
        2009 and thereafter..............................................................     100.000%
</Table>

         (d) Notwithstanding the provisions of subparagraph (a) of this
Paragraph 5, at any time prior to August 1, 2007, the Company may redeem a
portion of the outstanding Notes, so long as at least $600.0 million in
aggregate principal amount of Notes (including any additional Notes subsequently
issued under the Indenture) remains outstanding after the redemption, at a
redemption price equal to 110.000% of the principal amount, plus accrued and
unpaid interest and Liquidated Damages, if any, to the redemption date, with the
net cash proceeds of one or more Equity Offerings (other than Disqualified
Stock); provided that the redemption occurs within 60 days of the date of the
closing of such Equity Offering.

                                      A2-4
<PAGE>

         (6) MANDATORY REDEMPTION.

                  (a) Except as set forth in subparagraph (b) of this Paragraph
         6 or under Sections 4.10 and 4.15 of the Indenture, the Company shall
         not be required to make mandatory redemption or sinking fund payments
         with respect to the Notes.

                  (b) In accordance with the terms and conditions of the Escrow
         Agreement, and using the Deposit, Escrow Corp. shall redeem all and not
         less than all of the Initial Notes on November 8, 2003, or such earlier
         date as Escrow Corp. shall elect (the "Special Mandatory Redemption
         Date"), if the Escrow Corp. Merger has not occurred on or prior to the
         Special Mandatory Redemption Date, at a redemption price equal to 100%
         of the aggregate principal amount of the Notes, plus accrued and unpaid
         interest thereon through and including the Special Mandatory Redemption
         Date or through November 6, 2003 in the event the Special Mandatory
         Redemption Date is November 7 or November 8, 2003. Upon the closing of
         the Escrow Corp. Merger on or before the Special Mandatory Redemption
         Date, the foregoing provisions of this subparagraph (b) shall be null
         and void. The Special Mandatory Redemption Date shall be no more than
         two days after the date on which the parties to the Escrow Agreement
         decide to terminate the Escrow Agreement.

         (7) REPURCHASE AT OPTION OF HOLDER.

                  (a) If there is a Change of Control, the Company will be
         required to make an offer (a "Change of Control Offer") to repurchase
         all or any part (equal to $1,000 or an integral multiple thereof) of
         each Holder's Notes at a purchase price equal to 101% of the aggregate
         principal amount of Notes repurchased plus accrued and unpaid interest
         and Liquidated Damages, if any, on the Notes repurchased, to the date
         of purchase, subject to the rights of noteholders on the relevant
         record date to receive interest due on the relevant interest payment
         date (the "Change of Control Payment"). Within 10 business days
         following any Change of Control, the Company will mail a notice to each
         Holder setting forth the procedures governing the Change of Control
         Offer as required by the Indenture.

                  (b) If the Company or a Restricted Subsidiary consummates any
         Asset Sales, which the aggregate amount of Excess Proceeds exceeds
         $25.0 million, the Company will commence an offer to all Holders of
         Notes and all holders of other Indebtedness that is pari passu with the
         Notes containing provisions similar to those set forth in the Indenture
         with respect to offers to purchase or redeem with the proceeds of sales
         of assets (an "Asset Sale Offer") pursuant to Section 3.09 of the
         Indenture to purchase the maximum principal amount of Notes (including
         any Additional Notes) and other pari passu Indebtedness that may be
         purchased out of the Excess Proceeds at an offer price in cash in an
         amount equal to 100% of principal amount plus accrued and unpaid
         interest and Liquidated Damages, if any, to the date of purchase, in
         accordance with the procedures set forth in the Indenture. To the
         extent that the aggregate amount of Notes (including any Additional
         Notes) and other pari passu Indebtedness tendered pursuant to an Asset
         Sale Offer is less than the Excess Proceeds, the Company may use such
         excess for any purpose not otherwise prohibited by the Indenture. If
         the aggregate principal amount of Notes and other pari passu
         Indebtedness surrendered by holders thereof exceeds the amount of
         Excess Proceeds, the Trustee shall select the Notes and other pari
         passu Indebtedness to be purchased on a pro rata basis. Holders of
         Notes that are the subject of an offer to purchase will receive an
         Asset Sale Offer from the Company prior to any related purchase date
         and may elect to have such Notes purchased by completing the form
         entitled "Option of Holder to Elect Purchase" on the reverse of the
         Notes.

                                      A2-5
<PAGE>

                  (8) NOTICE OF REDEMPTION. Notice of redemption will be mailed
         at least 30 days but not more than 60 days before the redemption date
         to each Holder whose Notes are to be redeemed at its registered
         address. Notes in denominations larger than $1,000 may be redeemed in
         part but only in whole multiples of $1,000, unless all of the Notes
         held by a Holder are to be redeemed. On and after the redemption date
         interest ceases to accrue on Notes or portions thereof called for
         redemption.

                  (9) DENOMINATIONS, TRANSFER, EXCHANGE. The Notes are in
         registered form without coupons in denominations of $1,000 and integral
         multiples of $1,000. The transfer of Notes may be registered and Notes
         may be exchanged as provided in the Indenture. The Registrar and the
         Trustee may require a Holder, among other things, to furnish
         appropriate endorsements and transfer documents and the Company may
         require a Holder to pay any taxes and fees required by law or permitted
         by the Indenture. The Company need not exchange or register the
         transfer of any Note or portion of a Note selected for redemption,
         except for the unredeemed portion of any Note being redeemed in part.
         Also, the Company need not exchange or register the transfer of any
         Notes for a period of 15 days before a selection of Notes to be
         redeemed or during the period between a record date and the
         corresponding Interest Payment Date.

         This Regulation S Temporary Global Note is exchangeable in whole or in
part for one or more Global Notes only (i) on or after the termination of the
40-day restricted period (as defined in Regulation S) and (ii) upon presentation
of certificates (accompanied by an Opinion of Counsel, if applicable) required
by Article 2 of the Indenture. Upon exchange of this Regulation S Temporary
Global Note for one or more Global Notes, the Trustee shall cancel this
Regulation S Temporary Global Note.

                  (10) PERSONS DEEMED OWNERS. The registered Holder of a Note
         may be treated as its owner for all purposes.

                  (11) AMENDMENT, SUPPLEMENT AND WAIVER. Subject to certain
         exceptions, the Indenture, the Note Guarantees or the Notes may be
         amended or supplemented with the consent of the Holders of at least a
         majority in principal amount of the then outstanding Notes and
         Additional Notes, if any, voting as a single class, and any existing
         default or compliance with any provision of the Indenture, the Note
         Guarantees or the Notes may be waived with the consent of the Holders
         of a majority in principal amount of the then outstanding Notes and
         Additional Notes, if any, voting as a single class. Without the consent
         of any Holder of a Note, the Indenture, the Note Guarantees or the
         Notes may be amended or supplemented to cure any ambiguity, defect or
         inconsistency, to provide for uncertificated Notes in addition to or in
         place of certificated Notes, to provide for the assumption of the
         Company's or any Guarantor's obligations to Holders of the Notes in
         case of a merger or consolidation, to make any change that would
         provide any additional rights or benefits to the Holders of the Notes
         or that does not adversely affect the legal rights under the Indenture
         of any such Holder, to comply with the requirements of the SEC in order
         to effect or maintain the qualification of the Indenture under the
         Trust Indenture Act , to provide for the Issuance of Additional Notes
         in accordance with the limitations set forth in the Indenture, or to
         allow any Guarantor to execute a supplemental indenture to the
         Indenture and/or a Note Guarantee with respect to the Notes.

                  (12) DEFAULTS AND REMEDIES. Events of Default include: (i)
         default for 30 days in the payment when due of interest on, or
         Liquidated Damages with respect to, the Notes; (ii) default in payment
         when due of principal of or premium, if any, on the Notes, (iii)
         failure by the Company or any of its Restricted Subsidiaries to comply
         with Section 3.08, 4.07, 4.09, 4.10, 4.15 or 5.01 of the Indenture;
         (iv) failure by the Company or any of its Restricted Subsidiaries for
         60 days after notice to the Company by the Trustee or the Holders of at
         least 25% in principal

                                      A2-6
<PAGE>

         amount of the Notes then outstanding voting as a single class to
         observe or perform any other covenant, representation, warranty or
         other agreement in the Indenture or the Notes; (v) default under any
         mortgage, indenture or instrument under which there may be issued or by
         which there may be secured or evidenced any Indebtedness for money
         borrowed by the Company or any of its Restricted Subsidiaries (or the
         payment of which is guaranteed by the Company or any of its Restricted
         Subsidiaries), whether such Indebtedness or guarantee now exists, or is
         created after the date of the Indenture, if that default (A) is caused
         by a failure to pay principal of, or interest or premium, if any, on
         such Indebtedness prior to the expiration of the grace period provided
         in such Indebtedness on the date of such default (a "Payment Default");
         or (B) results in the acceleration of such Indebtedness prior to its
         express maturity, and in each case, the principal amount of any such
         Indebtedness, together with the principal amount of any other such
         Indebtedness under which there has been a Payment Default or the
         maturity of which has been so accelerated, aggregates $25.0 million or
         more; (vi) a final judgment or final judgments for the payment of money
         are entered by a court or courts of competent jurisdiction against the
         Company or any of its Restricted Subsidiaries or any group of
         Subsidiaries that, taken as a whole, would constitute a Restricted
         Subsidiary, which judgment or judgments are not paid, discharged or
         stayed for a period of 60 days; provided that the aggregate of all such
         undischarged judgments exceeds $35.0 million; (vii) certain events of
         bankruptcy or insolvency with respect to the Company or any of its
         Significant Subsidiaries, or any group of Subsidiaries, that, taken as
         a whole, would constitute a Significant Subsidiary pursuant to or
         within the meaning of Bankruptcy Law; (viii) failure of the Escrow
         Agreement, at any time, to be in full force and effect (unless the
         Escrow Deposit is released by the escrow agent) or any contest by the
         Company or any of its Subsidiaries or Parent of the validity or
         enforceability of the Escrow Agreement; (ix) failure by Escrow Corp. to
         redeem the Notes pursuant to the provisions described in Section 3.08
         of the Indenture and (x) except as permitted by the Indenture, any Note
         Guarantee shall be held in any judicial proceeding to be unenforceable
         or invalid or shall cease for any reason to be in full force and effect
         or any Guarantor or any Person acting on its behalf shall deny or
         disaffirm its obligations under such Guarantor's Note Guarantee. If any
         Event of Default occurs and is continuing, the Trustee or the Holders
         of at least 25% in principal amount of the then outstanding Notes may
         declare all the Notes to be due and payable. Notwithstanding the
         foregoing, in the case of an Event of Default arising from certain
         events of bankruptcy or insolvency, all outstanding Notes will become
         due and payable without further action or notice. Holders may not
         enforce the Indenture or the Notes except as provided in the Indenture.
         Subject to certain limitations, Holders of a majority in principal
         amount of the then outstanding Notes may direct the Trustee in its
         exercise of any trust or power. The Trustee may withhold from Holders
         of the Notes notice of any continuing Default or Event of Default
         (except a Default or Event of Default relating to the payment of
         principal or interest) if it determines that withholding notice is in
         their interest. The Holders of a majority in aggregate principal amount
         of the Notes then outstanding by notice to the Trustee may on behalf of
         the Holders of all of the Notes waive any existing Default or Event of
         Default and its consequences under the Indenture except a continuing
         Default or Event of Default in the payment of interest on, or the
         principal of, the Notes. The Company is required to deliver to the
         Trustee annually a statement regarding compliance with the Indenture,
         and the Company is required upon becoming aware of any Default or Event
         of Default, to deliver to the Trustee a statement specifying such
         Default or Event of Default.

                  (13) TRUSTEE DEALINGS WITH COMPANY. The Trustee, in its
         individual or any other capacity, may make loans to, accept deposits
         from, and perform services for the Company or its Affiliates, and may
         otherwise deal with the Company or its Affiliates, as if it were not
         the Trustee.

                                      A2-7
<PAGE>

                  (14) NO RECOURSE AGAINST OTHERS. A director, officer,
         employee, incorporator or stockholder, of the Company or any of the
         Guarantors, as such, will not have any liability for any obligations of
         the Company or such Guarantor under the Notes, the Note Guarantees or
         the Indenture or for any claim based on, in respect of, or by reason
         of, such obligations or their creation. Each Holder by accepting a Note
         waives and releases all such liability. The waiver and release are part
         of the consideration for the issuance of the Notes.

                  (15) AUTHENTICATION. This Note will not be valid until
         authenticated by the manual signature of the Trustee or an
         authenticating agent.

                  (16) ABBREVIATIONS. Customary abbreviations may be used in the
         name of a Holder or an assignee, such as: TEN COM (= tenants in
         common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants
         with right of survivorship and not as tenants in common), CUST (=
         Custodian), and U/G/M/A (= Uniform Gifts to Minors Act).

                  (17) ADDITIONAL RIGHTS OF HOLDERS OF RESTRICTED GLOBAL NOTES
         AND RESTRICTED DEFINITIVE NOTES. In addition to the rights provided to
         Holders of Notes under the Indenture, Holders of Restricted Global
         Notes and Restricted Definitive Notes will have all the rights set
         forth in the Registration Rights Agreement dated as of August 8, 2003,
         among the Company, the Guarantors and the other parties named on the
         signature pages thereof or, in the case of Additional Notes, Holders of
         Restricted Global Notes and Restricted Definitive Notes will have the
         rights set forth in one or more registration rights agreements, if any,
         among the Company, the Guarantors and the other parties thereto,
         relating to rights given by the Company and the Guarantors to the
         purchasers of any Additional Notes (collectively, the "Registration
         Rights Agreement").

                  (18) CUSIP NUMBERS. Pursuant to a recommendation promulgated
         by the Committee on Uniform Security Identification Procedures, the
         Company has caused CUSIP numbers to be printed on the Notes and the
         Trustee may use CUSIP numbers in notices of redemption as a convenience
         to Holders. No representation is made as to the accuracy of such
         numbers either as printed on the Notes or as contained in any notice of
         redemption and reliance may be placed only on the other identification
         numbers placed thereon.

         The Company will furnish to any Holder upon written request and without
charge a copy of the Indenture and/or the Registration Rights Agreement.
Requests may be made to:

ACC Escrow Corp.
14201 Wireless Way
Oklahoma City, Oklahoma 73134

Attention:
            --------------

                                      A2-8

<PAGE>

                                 ASSIGNMENT FORM

         To assign this Note, fill in the form below:

(I) or (we) assign and transfer this Note to:
                                             ----------------------------------
                                               (Insert assignee's legal name)

--------------------------------------------------------------------------------
                  (Insert assignee's soc. sec. or tax I.D. no.)

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
              (Print or type assignee's name, address and zip code)

and irrevocably appoint
                        -------------------------------------------------------
to transfer this Note on the books of the Company. The agent may substitute
another to act for him.

Date:
       ---------------
                              Your Signature:
                                             ----------------------------------
                                             (Sign exactly as your name appears
                                             on the face of this Note)

Signature Guarantee*:
                       ---------------------

* Participant in a recognized Signature Guarantee Medallion Program (or other
signature guarantor acceptable to the Trustee).

                                      A2-9
<PAGE>

                       OPTION OF HOLDER TO ELECT PURCHASE

         If you want to elect to have this Note purchased by the Company
pursuant to Section 4.10 or 4.15 of the Indenture, check the appropriate box
below:

                Section 4.10                    Section 4.15

         If you want to elect to have only part of the Note purchased by the
Company pursuant to Section 4.10 or Section 4.15 of the Indenture, state the
amount you elect to have purchased:

                                $
                                 ------------

Date:
       ---------------
                              Your Signature:
                                             ----------------------------------
                                             (Sign exactly as your name appears
                                             on the face of this Note)

                              Tax Identification No.:
                                                     --------------------------

Signature Guarantee*:
                       ---------------------

* Participant in a recognized Signature Guarantee Medallion Program (or other
signature guarantor acceptable to the Trustee).

                                      A2-10
<PAGE>

           SCHEDULE OF EXCHANGES OF REGULATION S TEMPORARY GLOBAL NOTE

         The following exchanges of a part of this Regulation S Temporary Global
Note for an interest in another Global Note, or of other Restricted Global Notes
for an interest in this Regulation S Temporary Global Note, have been made:

<Table>
<Caption>
                                                                           Principal Amount
                           Amount of decrease    Amount of increase in    of this Global Note       Signature of
                           in Principal Amount      Principal Amount        following such       authorized officer
                                   of                      of                  decrease            of Trustee or
    Date of Exchange        this Global Note        this Global Note         (or increase)            Custodian
    ----------------       -------------------   ---------------------    -------------------    ------------------
<S>                        <C>                   <C>                      <C>                    <C>
</Table>

                                      A2-11
<PAGE>

                                                                       EXHIBIT B

                         FORM OF CERTIFICATE OF TRANSFER

ACC Escrow Corp.
14201 Wireless Way
Oklahoma City, Oklahoma 73134

Bank of Oklahoma, National Association
9520 North May, Suite 110
Oklahoma City, Oklahoma  73120
Attention:  Corporate Trust Group

         Re:  10% Senior Notes due 2011

         Reference is hereby made to the Indenture, dated as of August 8, 2003
(the "Indenture"), between ACC Escrow Corp., as issuer (the "Company") and Bank
of Oklahoma, National Association, as trustee. Capitalized terms used but not
defined herein shall have the meanings given to them in the Indenture.

         ___________________, (the "Transferor") owns and proposes to transfer
the Note[s] or interest in such Note[s] specified in Annex A hereto, in the
principal amount of $___________ in such Note[s] or interests (the "Transfer"),
to ___________________________ (the "Transferee"), as further specified in Annex
A hereto. In connection with the Transfer, the Transferor hereby certifies that:

                             [CHECK ALL THAT APPLY]

         1. [ ] CHECK IF TRANSFEREE WILL TAKE DELIVERY OF A BENEFICIAL INTEREST
IN THE 144A GLOBAL NOTE OR A DEFINITIVE NOTE PURSUANT TO RULE 144A. The Transfer
is being effected pursuant to and in accordance with Rule 144A under the
Securities Act of 1933, as amended (the "Securities Act"), and, accordingly, the
Transferor hereby further certifies that the beneficial interest or Definitive
Note is being transferred to a Person that the Transferor reasonably believed
and believes is purchasing the beneficial interest or Definitive Note for its
own account, or for one or more accounts with respect to which such Person
exercises sole investment discretion, and such Person and each such account is a
"qualified institutional buyer" within the meaning of Rule 144A in a transaction
meeting the requirements of Rule 144A and such Transfer is in compliance with
any applicable blue sky securities laws of any state of the United States. Upon
consummation of the proposed Transfer in accordance with the terms of the
Indenture, the transferred beneficial interest or Definitive Note will be
subject to the restrictions on transfer enumerated in the Private Placement
Legend printed on the 144A Global Note and/or the Definitive Note and in the
Indenture and the Securities Act.

         2. [ ] CHECK IF TRANSFEREE WILL TAKE DELIVERY OF A BENEFICIAL INTEREST
IN THE REGULATION S TEMPORARY GLOBAL NOTE, THE REGULATION S PERMANENT GLOBAL
NOTE OR A DEFINITIVE NOTE PURSUANT TO REGULATION S. The Transfer is being
effected pursuant to and in accordance with Rule 903 or Rule 904 under the
Securities Act and, accordingly, the Transferor hereby further certifies that
(i) the Transfer is not being made to a Person in the United States and (x) at
the time the buy order was originated, the Transferee was outside the United
States or such Transferor and any Person acting on its behalf reasonably
believed and believes that the Transferee was outside the United States or (y)
the transaction was executed in, on or through the facilities of a designated
offshore securities market and neither such Transferor nor any Person acting on
its behalf knows that the transaction was prearranged with a buyer in the United
States, (ii) no directed selling efforts have been made in contravention of the
requirements of Rule 903(b) or Rule 904(b) of Regulation S under the Securities
Act, (iii) the transaction is not part of a plan or scheme to evade the
registration requirements of the Securities Act and (iv) if the proposed
transfer is being made prior to the expiration of the Restricted Period, the
transfer is not being made to a U.S. Person or for the account or benefit of a

                                       B-1
<PAGE>

U.S. Person (other than an Initial Purchaser). Upon consummation of the proposed
transfer in accordance with the terms of the Indenture, the transferred
beneficial interest or Definitive Note will be subject to the restrictions on
Transfer enumerated in the Private Placement Legend printed on the Regulation S
Permanent Global Note, the Regulation S Temporary Global Note and/or the
Definitive Note and in the Indenture and the Securities Act.

         3. [ ] CHECK AND COMPLETE IF TRANSFEREE WILL TAKE DELIVERY OF A
BENEFICIAL INTEREST IN THE IAI GLOBAL NOTE OR A DEFINITIVE NOTE PURSUANT TO ANY
PROVISION OF THE SECURITIES ACT OTHER THAN RULE 144A OR REGULATION S. The
Transfer is being effected in compliance with the transfer restrictions
applicable to beneficial interests in Restricted Global Notes and Restricted
Definitive Notes and pursuant to and in accordance with the Securities Act and
any applicable blue sky securities laws of any state of the United States, and
accordingly the Transferor hereby further certifies that (check one):

                  (a) [ ] such Transfer is being effected pursuant to and in
         accordance with Rule 144 under the Securities Act;

                                       or

                  (b) [ ] such Transfer is being effected to the Company or a
         subsidiary thereof;

                                       or

                  (c) [ ] such Transfer is being effected pursuant to an
         effective registration statement under the Securities Act and in
         compliance with the prospectus delivery requirements of the Securities
         Act;

                                       or

                  (d) [ ] such Transfer is being effected to an Institutional
         Accredited Investor and pursuant to an exemption from the registration
         requirements of the Securities Act other than Rule 144A, Rule 144 or
         Rule 904, and the Transferor hereby further certifies that it has not
         engaged in any general solicitation within the meaning of Regulation D
         under the Securities Act and the Transfer complies with the transfer
         restrictions applicable to beneficial interests in a Restricted Global
         Note or Restricted Definitive Notes and the requirements of the
         exemption claimed, which certification is supported by (1) a
         certificate executed by the Transferee in the form of Exhibit D to the
         Indenture and (2) if such Transfer is in respect of a principal amount
         of Notes at the time of transfer of less than $250,000, an Opinion of
         Counsel provided by the Transferor or the Transferee (a copy of which
         the Transferor has attached to this certification), to the effect that
         such Transfer is in compliance with the Securities Act. Upon
         consummation of the proposed transfer in accordance with the terms of
         the Indenture, the transferred beneficial interest or Definitive Note
         will be subject to the restrictions on transfer enumerated in the
         Private Placement Legend printed on the IAI Global Note and/or the
         Definitive Notes and in the Indenture and the Securities Act.

         4. [ ] CHECK IF TRANSFEREE WILL TAKE DELIVERY OF A BENEFICIAL INTEREST
IN AN UNRESTRICTED GLOBAL NOTE OR OF AN UNRESTRICTED DEFINITIVE NOTE.

         (a) [ ] CHECK IF TRANSFER IS PURSUANT TO RULE 144. (i) The Transfer is
being effected pursuant to anD in accordance with Rule 144 under the Securities
Act and in compliance with the transfer restrictions contained in the Indenture
and any applicable blue sky securities laws of any state of the United States
and (ii) the restrictions on transfer contained in the Indenture and the Private
Placement

                                      B-2
<PAGE>

Legend are not required in order to maintain compliance with the Securities Act.
Upon consummation of the proposed Transfer in accordance with the terms of the
Indenture, the transferred beneficial interest or Definitive Note will no longer
be subject to the restrictions on transfer enumerated in the Private Placement
Legend printed on the Restricted Global Notes, on Restricted Definitive Notes
and in the Indenture.

         (b) [ ] CHECK IF TRANSFER IS PURSUANT TO REGULATION S. (i) The Transfer
is being effected pursuant tO and in accordance with Rule 903 or Rule 904 under
the Securities Act and in compliance with the transfer restrictions contained in
the Indenture and any applicable blue sky securities laws of any state of the
United States and (ii) the restrictions on transfer contained in the Indenture
and the Private Placement Legend are not required in order to maintain
compliance with the Securities Act. Upon consummation of the proposed Transfer
in accordance with the terms of the Indenture, the transferred beneficial
interest or Definitive Note will no longer be subject to the restrictions on
transfer enumerated in the Private Placement Legend printed on the Restricted
Global Notes, on Restricted Definitive Notes and in the Indenture.

         (c) [ ] CHECK IF TRANSFER IS PURSUANT TO OTHER EXEMPTION. (i) The
Transfer is being effected pursuanT to and in compliance with an exemption from
the registration requirements of the Securities Act other than Rule 144, Rule
903 or Rule 904 and in compliance with the transfer restrictions contained in
the Indenture and any applicable blue sky securities laws of any State of the
United States and (ii) the restrictions on transfer contained in the Indenture
and the Private Placement Legend are not required in order to maintain
compliance with the Securities Act. Upon consummation of the proposed Transfer
in accordance with the terms of the Indenture, the transferred beneficial
interest or Definitive Note will not be subject to the restrictions on transfer
enumerated in the Private Placement Legend printed on the Restricted Global
Notes or Restricted Definitive Notes and in the Indenture.

         This certificate and the statements contained herein are made for your
benefit and the benefit of the Company.

                                       ---------------------------------------
                                        [Insert Name of Transferor]

                                       By:
                                          ------------------------------------
                                          Name:
                                          Title:

         Dated:
                ---------------------

                                      B-3
<PAGE>

                       ANNEX A TO CERTIFICATE OF TRANSFER

         1. The Transferor owns and proposes to transfer the following:

                            [CHECK ONE OF (a) OR (b)]

                  (a) [ ]a beneficial interest in the:

                           (i) [ ] 144A Global Note (CUSIP _________), or

                           (ii)[ ] Regulation S Permanent Global Note (CUSIP
                                   _________), or

                           (iii)[ ] Regulation S Temporary Global Note (CUSIP
                                   _________), or

                           (iv)[ ] IAI Global Note (CUSIP _________); or

                  (b) [ ] a Restricted Definitive Note.

         2. After the Transfer the Transferee will hold:

                                   [CHECK ONE]

                  (a) [ ]a beneficial interest in the:

                           (i) [ ] 144A Global Note (CUSIP _________), or

                           (ii)[ ] Regulation S Permanent Global Note (CUSIP
                                   _________), or

                           (ii)[ ] Regulation S Temporary Global Note
                                   (CUSIP _________), or

                           (iv)[ ] IAI Global Note (CUSIP _________); or

                           (v) [ ] Unrestricted Global Note
                                   (CUSIP _________); or

                  (b) [ ] a Restricted Definitive Note; or

                  (c) [ ]an Unrestricted Definitive Note,

                  in accordance with the terms of the Indenture.

                                      B-1
<PAGE>

                                                                       EXHIBIT C

                         FORM OF CERTIFICATE OF EXCHANGE

ACC Escrow Corp.
14201 Wireless Way
Oklahoma City, Oklahoma 73134

Bank of Oklahoma, National Association
9520 North May, Suite 110
Oklahoma City, Oklahoma  73120
Attention:  Corporate Trust Group

         Re:  10% Senior Notes due 2011

                              (CUSIP            )
                                     -----------

         Reference is hereby made to the Indenture, dated as of August 8, 2003
(the "Indenture"), between ACC Escrow Corp., as issuer (the "Company") and Bank
of Oklahoma, National Association, as trustee. Capitalized terms used but not
defined herein shall have the meanings given to them in the Indenture.

         __________________________, (the "Owner") owns and proposes to exchange
the Note[s] or interest in such Note[s] specified herein, in the principal
amount of $____________ in such Note[s] or interests (the "Exchange"). In
connection with the Exchange, the Owner hereby certifies that:

         1. EXCHANGE OF RESTRICTED DEFINITIVE NOTES OR BENEFICIAL INTERESTS IN A
RESTRICTED GLOBAL NOTE FOR UNRESTRICTED DEFINITIVE NOTES OR BENEFICIAL INTERESTS
IN AN UNRESTRICTED GLOBAL NOTE

         (a) [ ] CHECK IF EXCHANGE IS FROM BENEFICIAL INTEREST IN A RESTRICTED
GLOBAL NOTE TO BENEFICIAL INTEREST IN AN UNRESTRICTED GLOBAL NOTE. In connection
with the Exchange of the Owner's beneficial interest in a Restricted Global Note
for a beneficial interest in an Unrestricted Global Note in an equal principal
amount, the Owner hereby certifies (i) the beneficial interest is being acquired
for the Owner's own account without transfer, (ii) such Exchange has been
effected in compliance with the transfer restrictions applicable to the Global
Notes and pursuant to and in accordance with the Securities Act of 1933, as
amended (the "Securities Act"), (iii) the restrictions on transfer contained in
the Indenture and the Private Placement Legend are not required in order to
maintain compliance with the Securities Act and (iv) the beneficial interest in
an Unrestricted Global Note is being acquired in compliance with any applicable
blue sky securities laws of any state of the United States.

         (b) [ ] CHECK IF EXCHANGE IS FROM BENEFICIAL INTEREST IN A RESTRICTED
GLOBAL NOTE TO UNRESTRICTED DEFINITIVE NOTE. In connection with the Exchange of
the Owner's beneficial interest in a Restricted Global Note for an Unrestricted
Definitive Note, the Owner hereby certifies (i) the Definitive Note is being
acquired for the Owner's own account without transfer, (ii) such Exchange has
been effected in compliance with the transfer restrictions applicable to the
Restricted Global Notes and pursuant to and in accordance with the Securities
Act, (iii) the restrictions on transfer contained in the Indenture and the
Private Placement Legend are not required in order to maintain compliance with
the Securities Act and (iv) the Definitive Note is being acquired in compliance
with any applicable blue sky securities laws of any state of the United States.

         (c) [ ] CHECK IF EXCHANGE IS FROM RESTRICTED DEFINITIVE NOTE TO
BENEFICIAL INTEREST IN AN UNRESTRICTED GLOBAL NOTE. In connection with the
Owner's Exchange of a Restricted Definitive Note for

                                      C-1
<PAGE>

a beneficial interest in an Unrestricted Global Note, the Owner hereby certifies
(i) the beneficial interest is being acquired for the Owner's own account
without transfer, (ii) such Exchange has been effected in compliance with the
transfer restrictions applicable to Restricted Definitive Notes and pursuant to
and in accordance with the Securities Act, (iii) the restrictions on transfer
contained in the Indenture and the Private Placement Legend are not required in
order to maintain compliance with the Securities Act and (iv) the beneficial
interest is being acquired in compliance with any applicable blue sky securities
laws of any state of the United States.

         (d) [ ] CHECK IF EXCHANGE IS FROM RESTRICTED DEFINITIVE NOTE TO
UNRESTRICTED DEFINITIVE NOTE. In connection with the Owner's Exchange of a
Restricted Definitive Note for an Unrestricted Definitive Note, the Owner hereby
certifies (i) the Unrestricted Definitive Note is being acquired for the Owner's
own account without transfer, (ii) such Exchange has been effected in compliance
with the transfer restrictions applicable to Restricted Definitive Notes and
pursuant to and in accordance with the Securities Act, (iii) the restrictions on
transfer contained in the Indenture and the Private Placement Legend are not
required in order to maintain compliance with the Securities Act and (iv) the
Unrestricted Definitive Note is being acquired in compliance with any applicable
blue sky securities laws of any state of the United States.

         2. EXCHANGE OF RESTRICTED DEFINITIVE NOTES OR BENEFICIAL INTERESTS IN
RESTRICTED GLOBAL NOTES FOR RESTRICTED DEFINITIVE NOTES OR BENEFICIAL INTERESTS
IN RESTRICTED GLOBAL NOTES

         (a) [ ] CHECK IF EXCHANGE IS FROM BENEFICIAL INTEREST IN A RESTRICTED
GLOBAL NOTE TO RESTRICTED DEFINITIVE NOTE. In connection with the Exchange of
the Owner's beneficial interest in a Restricted Global Note for a Restricted
Definitive Note with an equal principal amount, the Owner hereby certifies that
the Restricted Definitive Note is being acquired for the Owner's own account
without transfer. Upon consummation of the proposed Exchange in accordance with
the terms of the Indenture, the Restricted Definitive Note issued will continue
to be subject to the restrictions on transfer enumerated in the Private
Placement Legend printed on the Restricted Definitive Note and in the Indenture
and the Securities Act.

         (b) [ ] CHECK IF EXCHANGE IS FROM RESTRICTED DEFINITIVE NOTE TO
BENEFICIAL INTEREST IN A RESTRICTED GLOBAL NOTE. In connection with the Exchange
of the Owner's Restricted Definitive Note for a beneficial interest in the
[CHECK ONE] [ ]144A Global Note, [ ]Regulation S Global Note, [ ]IAI Global Note
with an equal princIpAL amount, the Owner hereby certifies (i) the beneficial
interest is being acquired for the Owner's own account without transfer and (ii)
such Exchange has been effected in compliance with the transfer restrictions
applicable to the Restricted Global Notes and pursuant to and in accordance with
the Securities Act, and in compliance with any applicable blue sky securities
laws of any state of the United States. Upon consummation of the proposed
Exchange in accordance with the terms of the Indenture, the beneficial interest
issued will be subject to the restrictions on transfer enumerated in the Private
Placement Legend printed on the relevant Restricted Global Note and in the
Indenture and the Securities Act.

         This certificate and the statements contained herein are made for your
benefit and the benefit of the Company.

                                         -------------------------------------
                                              [Insert Name of Transferor]

                                         By:
                                            -----------------------------------
                                            Name:
                                            Title:

Dated:
        ----------------------

                                       C-2
<PAGE>

                                                                       EXHIBIT D

                            FORM OF CERTIFICATE FROM
                   ACQUIRING INSTITUTIONAL ACCREDITED INVESTOR

ACC Escrow Corp.
14201 Wireless Way
Oklahoma City, Oklahoma 73174

Bank of Oklahoma, National Association
9520 North May, Suite 110
Oklahoma City, Oklahoma  73120
Attention:  Corporate Trust Group

                  Re:  10% Senior Notes due 2011

         Reference is hereby made to the Indenture, dated as of August 8, 2003
(the "Indenture"), between ACC Escrow Corp., as issuer (the "Company") and Bank
of Oklahoma, National Association, as trustee. Capitalized terms used but not
defined herein shall have the meanings given to them in the Indenture.

         In connection with our proposed purchase of $____________ aggregate
principal amount of:

         (a)[ ] a beneficial interest in a Global Note, or

         (b)[ ] a Definitive Note,

         we confirm that:

         1. We understand that any subsequent transfer of the Notes or any
interest therein is subject to certain restrictions and conditions set forth in
the Indenture and the undersigned agrees to be bound by, and not to resell,
pledge or otherwise transfer the Notes or any interest therein except in
compliance with, such restrictions and conditions and the Securities Act of
1933, as amended (the "Securities Act").

         2. We understand that the offer and sale of the Notes have not been
registered under the Securities Act, and that the Notes and any interest therein
may not be offered or sold except as permitted in the following sentence. We
agree, on our own behalf and on behalf of any accounts for which we are acting
as hereinafter stated, that if we should sell the Notes or any interest therein,
we will do so only (A) to the Company or any subsidiary thereof, (B) in
accordance with Rule 144A under the Securities Act to a "qualified institutional
buyer" (as defined therein), (C) to an institutional "accredited investor" (as
defined below) that, prior to such transfer, furnishes (or has furnished on its
behalf by a U.S. broker-dealer) to you and to the Company a signed letter
substantially in the form of this letter and, if such Transfer is in respect of
a principal amount of Notes at the time of transfer of less than $250,000, an
Opinion of Counsel in form reasonably acceptable to the Company to the effect
that such transfer is in compliance with the Securities Act, (D) outside the
United States in accordance with Rule 904 of Regulation S under the Securities
Act, (E) pursuant to the provisions of Rule 144(k) under the Securities Act or
(F) pursuant to an effective registration statement under the Securities Act,
and we further agree to provide to any Person purchasing the Definitive Note or
beneficial interest in a Global Note from us in a transaction meeting the
requirements of clauses (A) through (E) of this paragraph a notice advising such
purchaser that resales thereof are restricted as stated herein.

                                      D-1
<PAGE>

         3. We understand that, on any proposed resale of the Notes or
beneficial interest therein, we will be required to furnish to you and the
Company such certifications, legal opinions and other information as you and the
Company may reasonably require to confirm that the proposed sale complies with
the foregoing restrictions. We further understand that the Notes purchased by us
will bear a legend to the foregoing effect.

         4. We are an institutional "accredited investor" (as defined in Rule
501(a)(1), (2), (3) or (7) of Regulation D under the Securities Act) and have
such knowledge and experience in financial and business matters as to be capable
of evaluating the merits and risks of our investment in the Notes, and we and
any accounts for which we are acting are each able to bear the economic risk of
our or its investment.

         5. We are acquiring the Notes or beneficial interest therein purchased
by us for our own account or for one or more accounts (each of which is an
institutional "accredited investor") as to each of which we exercise sole
investment discretion.

         You and the Company are entitled to rely upon this letter and are
irrevocably authorized to produce this letter or a copy hereof to any interested
party in any administrative or legal proceedings or official inquiry with
respect to the matters covered hereby.

                                       ----------------------------------------
                                         [Insert Name of Accredited Investor]

                                       By:
                                          -------------------------------------
                                          Name:
                                          Title:

Dated:
        -----------------------

                                      D-1
<PAGE>

                                                                      EXHIBIT E

                            [FORM OF NOTE GUARANTEE]

         For value received, each Guarantor (which term includes any successor
Person under the Indenture) has, jointly and severally, unconditionally
guaranteed, to the extent set forth in the Indenture and subject to the
provisions in the Indenture dated as of August 8, 2003 (the "Indenture") between
ACC Escrow Corp., (the "Company") and Bank of Oklahoma, National Association, as
trustee (the "Trustee"), (a) the due and punctual payment of the principal of,
premium and Liquidated Damages, if any, and interest on the Notes (as defined in
the Indenture), whether at maturity, by acceleration, redemption or otherwise,
the due and punctual payment of interest on overdue principal of and interest on
the Notes, if any, if lawful, and the due and punctual performance of all other
obligations of the Company to the Holders or the Trustee all in accordance with
the terms of the Indenture and (b) in case of any extension of time of payment
or renewal of any Notes or any of such other obligations, that the same will be
promptly paid in full when due or performed in accordance with the terms of the
extension or renewal, whether at stated maturity, by acceleration or otherwise.
The obligations of the Guarantors to the Holders of Notes and to the Trustee
pursuant to the Note Guarantee and the Indenture are expressly set forth in
Article 10 of the Indenture and reference is hereby made to the Indenture for
the precise terms of the Note Guarantee. Each Holder of a Note, by accepting the
same, (a) agrees to and shall be bound by such provisions, (b) authorizes and
directs the Trustee, on behalf of such Holder, to take such action as may be
necessary or appropriate to effectuate the subordination as provided in the
Indenture and (c) appoints the Trustee attorney-in-fact of such Holder for such
purpose; provided, however, that the Indebtedness evidenced by this Note
Guarantee shall cease to be so subordinated and subject in right of payment upon
any defeasance of this Note in accordance with the provisions of the Indenture.

                                        By:
                                            -----------------------------------
                                        Name:
                                        Title:

                                      E-1
<PAGE>

                                                                       EXHIBIT F

                         [FORM OF SUPPLEMENTAL INDENTURE
                    TO BE DELIVERED BY SUBSEQUENT GUARANTORS]

         SUPPLEMENTAL INDENTURE (this "Supplemental Indenture"), dated as of
________________, 200__, among __________________ (the "Guaranteeing
Subsidiary"), a subsidiary of ACC Escrow Corp. (or its permitted successor), a
Delaware corporation (the "Company"), the Company, the other Guarantors (as
defined in the Indenture referred to herein) and Bank of Oklahoma, National
Association, as trustee under the indenture referred to below (the "Trustee").

                                   WITNESSETH

         WHEREAS, the Company has heretofore executed and delivered to the
Trustee an indenture (the "Indenture"), dated as of August 8, 2003 providing for
the issuance of an unlimited aggregate principal amount of up of 10% Senior
Notes due 2011 (the "Notes");

         WHEREAS, the Indenture provides that under certain circumstances the
Guaranteeing Subsidiary shall execute and deliver to the Trustee a supplemental
indenture pursuant to which the Guaranteeing Subsidiary shall unconditionally
guarantee all of the Company's Obligations under the Notes and the Indenture on
the terms and conditions set forth herein (the "Note Guarantee"); and

         WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee is
authorized to execute and deliver this Supplemental Indenture.

         NOW THEREFORE, in consideration of the foregoing and for other good and
valuable consideration, the receipt of which is hereby acknowledged, the
Guaranteeing Subsidiary and the Trustee mutually covenant and agree for the
equal and ratable benefit of the Holders of the Notes as follows:

         1. CAPITALIZED TERMS. Capitalized terms used herein without definition
shall have the meanings assigned to them in the Indenture.

         2. AGREEMENT TO GUARANTEE. The Guaranteeing Subsidiary hereby agrees as
follows:

                  (a) Along with all Guarantors named in the Indenture, to
         jointly and severally Guarantee to each Holder of a Note authenticated
         and delivered by the Trustee and to the Trustee and its successors and
         assigns, the Notes or the obligations of the Company hereunder or
         thereunder, that:

                  (i) the principal of, and premium and Liquidated Damages, if
         any, and interest on the Notes will be promptly paid in full when due,
         whether at maturity, by acceleration, redemption or otherwise, and
         interest on the overdue principal of and interest on the Notes, if any,
         if lawful, and all other obligations of the Company to the Holders or
         the Trustee hereunder or thereunder will be promptly paid in full or
         performed, all in accordance with the terms hereof and thereof; and

                  (ii) in case of any extension of time of payment or renewal of
         any Notes or any of such other obligations, that same will be promptly
         paid in full when due or performed in accordance with the terms of the
         extension or renewal, whether at stated maturity, by acceleration or
         otherwise. Failing payment when due of any amount so

                                      F-1
<PAGE>

         guaranteed or any performance so guaranteed for whatever reason, the
         Guarantors shall be jointly and severally obligated to pay the same
         immediately.

                  (b) The obligations hereunder shall be unconditional,
         irrespective of the validity, regularity or enforceability of the Notes
         or the Indenture, the absence of any action to enforce the same, any
         waiver or consent by any Holder of the Notes with respect to any
         provisions hereof or thereof, the recovery of any judgment against the
         Company, any action to enforce the same or any other circumstance which
         might otherwise constitute a legal or equitable discharge or defense of
         a Guarantor.

                  (c) The following is hereby waived: diligence, presentment,
         demand of payment, filing of claims with a court in the event of
         insolvency or bankruptcy of the Company, any right to require a
         proceeding first against the Company, protest, notice and all demands
         whatsoever.

                  (d) This Note Guarantee shall not be discharged except by
         complete performance of the obligations contained in the Notes and the
         Indenture, and the Guaranteeing Subsidiary accepts all obligations of a
         Guarantor under the Indenture.

                  (e) If any Holder or the Trustee is required by any court or
         otherwise to return to the Company, the Guarantors, or any custodian,
         trustee, liquidator or other similar official acting in relation to
         either the Company or the Guarantors, any amount paid by either to the
         Trustee or such Holder, this Note Guarantee, to the extent theretofore
         discharged, shall be reinstated in full force and effect.

                  (f) The Guaranteeing Subsidiary shall not be entitled to any
         right of subrogation in relation to the Holders in respect of any
         obligations guaranteed hereby until payment in full of all obligations
         guaranteed hereby.

                  (g) As between the Guarantors, on the one hand, and the
         Holders and the Trustee, on the other hand, (x) the maturity of the
         obligations guaranteed hereby may be accelerated as provided in Article
         6 of the Indenture for the purposes of this Note Guarantee,
         notwithstanding any stay, injunction or other prohibition preventing
         such acceleration in respect of the obligations guaranteed hereby, and
         (y) in the event of any declaration of acceleration of such obligations
         as provided in Article 6 of the Indenture, such obligations (whether or
         not due and payable) shall forthwith become due and payable by the
         Guarantors for the purpose of this Note Guarantee.

                  (h) The Guarantors shall have the right to seek contribution
         from any non-paying Guarantor so long as the exercise of such right
         does not impair the rights of the Holders under the Note Guarantee.

                  (i) Pursuant to Section 10.02 of the Indenture, after giving
         effect to any maximum amount and all other contingent and fixed
         liabilities that are relevant under any applicable Bankruptcy or
         fraudulent conveyance laws, and after giving effect to any collections
         from, rights to receive contribution from or payments made by or on
         behalf of any other Guarantor in respect of the obligations of such
         other Guarantor under Article 10 of the Indenture, this new Note
         Guarantee shall be limited to the maximum amount permissible such that
         the obligations of such Guarantor under this Note Guarantee will not
         constitute a fraudulent transfer or conveyance.

                                      F-2
<PAGE>

         3. EXECUTION AND DELIVERY. Each Guaranteeing Subsidiary agrees that the
Note Guarantees shall remain in full force and effect notwithstanding any
failure to endorse on each Note a notation of such Note Guarantee.

         4. GUARANTEEING SUBSIDIARY MAY CONSOLIDATE, ETC. ON CERTAIN TERMS.

                  (a) The Guaranteeing Subsidiary may not sell or otherwise
         dispose of all substantially all of its assets to, or consolidate with
         or merge with or into (whether or not such Guarantor is the surviving
         Person) another Person, other than the Company or another Guarantor
         unless:

                  (i) immediately after giving effect to such transaction, no
         Default or Event of Default exists; and

                  (ii) either (A) subject to Sections 10.04 and 10.05 of the
         Indenture, the Person acquiring the property in any such sale or
         disposition or the Person formed by or surviving any such consolidation
         or merger unconditionally assumes all the obligations of that
         Guarantor, pursuant to a supplemental indenture in form and substance
         reasonably satisfactory to the Trustee, under the Notes, the Indenture
         and the Note Guarantee on the terms set forth herein or therein; or (B)
         the Net Proceeds of such sale or other disposition are applied in
         accordance with the applicable provisions of the Indenture, including
         without limitation, Section 4.10 thereof.

                  (b) In case of any such consolidation, merger, sale or
         conveyance and upon the assumption by the successor Person, by
         supplemental indenture, executed and delivered to the Trustee and
         satisfactory in form to the Trustee, of the Note Guarantee endorsed
         upon the Notes and the due and punctual performance of all of the
         covenants and conditions of the Indenture to be performed by the
         Guarantor, such successor Person shall succeed to and be substituted
         for the Guarantor with the same effect as if it had been named herein
         as a Guarantor. Such successor Person thereupon may cause to be signed
         any or all of the Note Guarantees to be endorsed upon all of the Notes
         issuable under the Indenture which theretofore shall not have been
         signed by the Company and delivered to the Trustee. All the Note
         Guarantees so issued shall in all respects have the same legal rank and
         benefit under the Indenture as the Note Guarantees theretofore and
         thereafter issued in accordance with the terms of the Indenture as
         though all of such Note Guarantees had been issued at the date of the
         execution hereof.

                  (c) Except as set forth in Articles 4 and 5 and Section 10.05
         of Article 10 of the Indenture, and notwithstanding clauses (a) and (b)
         above, nothing contained in the Indenture or in any of the Notes shall
         prevent any consolidation or merger of a Guarantor with or into the
         Company or another Guarantor, or shall prevent any sale or conveyance
         of the property of a Guarantor as an entirety or substantially as an
         entirety to the Company or another Guarantor.

         5. RELEASES.

                  (a) In the event of any sale or other disposition of all or
         substantially all of the assets of any Guarantor, by way of merger,
         consolidation or otherwise, or a sale or other disposition of all of
         the capital stock of any Guarantor, in each case to a Person that is
         not (either before or after giving effect to such transaction) a
         Restricted Subsidiary of the Company, then such Guarantor (in the event
         of a sale or other disposition, by way of

                                      F-3
<PAGE>

         merger, consolidation or otherwise, of all of the capital stock of such
         Guarantor) or the corporation acquiring the property (in the event of a
         sale or other disposition of all or substantially all of the assets of
         such Guarantor) will be released and relieved of any obligations under
         its Note Guarantee; provided that the Net Proceeds of such sale or
         other disposition are applied in accordance with the applicable
         provisions of the Indenture, including without limitation Section 4.10
         of the Indenture. Upon delivery by the Company to the Trustee of an
         Officers' Certificate and an Opinion of Counsel to the effect that such
         sale or other disposition was made by the Company in accordance with
         the provisions of the Indenture, including without limitation Section
         4.10 of the Indenture, the Trustee shall execute any documents
         reasonably required in order to evidence the release of any Guarantor
         from its obligations under its Note Guarantee.

                  (b) Any Guarantor not released from its obligations under its
         Note Guarantee shall remain liable for the full amount of principal of
         and interest on the Notes and for the other obligations of any
         Guarantor under the Indenture as provided in Article 10 of the
         Indenture.

         6. NO RECOURSE AGAINST OTHERS. No past, present or future director,
officer, employee, incorporator, stockholder or agent of the Guaranteeing
Subsidiary, as such, shall have any liability for any obligations of the Company
or any Guaranteeing Subsidiary under the Notes, any Note Guarantees, the
Indenture or this Supplemental Indenture or for any claim based on, in respect
of, or by reason of, such obligations or their creation. Each Holder of the
Notes by accepting a Note waives and releases all such liability. The waiver and
release are part of the consideration for issuance of the Notes. Such waiver may
not be effective to waive liabilities under the federal securities laws and it
is the view of the SEC that such a waiver is against public policy.

         7. NEW YORK LAW TO GOVERN. THE INTERNAL LAW OF THE STATE OF NEW YORK
SHALL GOVERN AND BE USED TO CONSTRUE THIS SUPPLEMENTAL INDENTURE BUT WITHOUT
GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT
THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY.

         8. COUNTERPARTS. The parties may sign any number of copies of this
Supplemental Indenture. Each signed copy shall be an original, but all of them
together represent the same agreement.

         9. EFFECT OF HEADINGS. The Section headings herein are for convenience
only and shall not affect the construction hereof.

         10. THE TRUSTEE. The Trustee shall not be responsible in any manner
whatsoever for or in respect of the validity or sufficiency of this Supplemental
Indenture or for or in respect of the recitals contained herein, all of which
recitals are made solely by the Guaranteeing Subsidiary and the Company.

                                      F-4
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Supplemental
Indenture to be duly executed and attested, all as of the date first above
written.

         Dated:                , 20
                ---------------    ---
                                           [GUARANTEEING SUBSIDIARY]

                                           By:
                                              ---------------------------------
                                           Name:
                                           Title:

                                           [COMPANY]

                                           By:
                                              ---------------------------------
                                           Name:
                                           Title:

                                           [EXISTING GUARANTORS]

                                           By:
                                              ---------------------------------
                                           Name:
                                           Title:

                                           [TRUSTEE],
                                             as Trustee

                                           By:
                                              ---------------------------------
                                                 Authorized Signatory

                                      F-5

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