Document:

<PAGE>

                              AMENDED AND RESTATED
                           REVOLVING CREDIT AGREEMENT

                                      among

                        LOGIX COMMUNICATIONS CORPORATION,
                                    BORROWER

                         BANC OF AMERICA SECURITIES LLC,
                       SOLE LEAD ARRANGER AND BOOK MANAGER

                             BANK OF AMERICA, N.A.,
                              ADMINISTRATIVE AGENT

                            CIBC WORLD MARKETS CORP.,
                                SYNDICATION AGENT

                                       and

                         TORONTO DOMINION (TEXAS), INC.,
                               DOCUMENTATION AGENT

                                       and

                            THE LENDERS NAMED HEREIN,
                                     LENDERS

                                   $50,000,000

                         DATED AS OF SEPTEMBER 13, 1999

<PAGE>

                                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                            Page
<S>            <C>                                                                                          <C>

SECTION 1      DEFINITIONS AND TERMS...........................................................................1
      1.1      Definitions.....................................................................................1
      1.2      Number and Gender of Words; Other References...................................................22
      1.3      Accounting Principles..........................................................................22

SECTION 2      BORROWING PROVISIONS...........................................................................22
      2.1      Commitments....................................................................................22
      2.2      LC Subfacility.................................................................................22
      2.3      Terminations or Reductions of Commitments......................................................26
      2.4      Borrowing Procedure............................................................................28

SECTION 3      TERMS OF PAYMENT...............................................................................29
      3.1      Loan Accounts, Notes, and Payments.............................................................29
      3.2      Interest and Principal Payments................................................................29
      3.3      Prepayments....................................................................................29
      3.4      Interest Options...............................................................................30
      3.5      Quotation of Rates.............................................................................30
      3.6      Default Rate...................................................................................30
      3.7      Interest Recapture.............................................................................30
      3.8      Interest Calculations..........................................................................31
      3.9      Maximum Rate...................................................................................31
      3.10     Interest Periods...............................................................................31
      3.11     Conversions....................................................................................32
      3.12     Order of Application...........................................................................32
      3.13     Sharing of Payments, Etc.......................................................................33
      3.14     Offset.........................................................................................33
      3.15     Booking Borrowings.............................................................................33

SECTION 4      CHANGE IN CIRCUMSTANCES........................................................................33
      4.1      Increased Cost and Reduced Return..............................................................33
      4.2      Limitation on Types of Loans...................................................................34
      4.3      Illegality.....................................................................................35
      4.4      Treatment of Affected Loans....................................................................35
      4.5      Compensation...................................................................................36
      4.6      Taxes..........................................................................................36

SECTION 5      FEES...........................................................................................38
      5.1      Treatment of Fees..............................................................................38
      5.2      Administrative and Up-front Fees...............................................................38
      5.3      LC Fees........................................................................................38
      5.4      LC Issuance and Fronting Fees..................................................................38
      5.5      Commitment Fees................................................................................38

SECTION 6.     SECURITY.......................................................................................39
      6.1      Collateral.....................................................................................39
      6.2      Existing Collateral Documents..................................................................39

                                                       (i)

<PAGE>

      6.3      Guaranties.....................................................................................39
      6.4      Future Liens...................................................................................39
      6.5      Release of Collateral..........................................................................40
      6.6      Negative Pledge................................................................................40
      6.7      DCCLP Guaranty.  ..............................................................................40
      6.8      Capital Contribution Agreement.................................................................40
      6.9      Control; Limitation of Rights. ................................................................40

SECTION 7      CONDITIONS PRECEDENT...........................................................................41
      7.1      Conditions Precedent to Closing................................................................41
      7.2      Conditions Precedent to a Permitted Acquisition................................................41
      7.3      Conditions Precedent to Each Borrowing.........................................................41
      7.4      Conditions Precedent to Additional Borrower....................................................42

SECTION 8      REPRESENTATIONS AND WARRANTIES.................................................................42
      8.1      Purpose of Credit..............................................................................42
      8.2      Existence, Good Standing, Authority, and Authorizations........................................42
      8.3      Subsidiaries; Capital Stock....................................................................42
      8.4      Authorization and Contravention................................................................43
      8.5      Binding Effect.................................................................................43
      8.6      Financial Statements...........................................................................43
      8.7      Litigation, Claims, Investigations.............................................................44
      8.8      Taxes..........................................................................................44
      8.9      Environmental Matters..........................................................................44
      8.10     Employee Benefit Plans.........................................................................44
      8.11     Properties; Liens..............................................................................45
      8.12     Government Regulations.........................................................................45
      8.13     Transactions with Affiliates...................................................................45
      8.14     Debt...........................................................................................45
      8.15     Material Agreements; Management Agreements.....................................................45
      8.16     Insurance......................................................................................45
      8.17     Labor Matters..................................................................................45
      8.18     Solvency.......................................................................................46
      8.19     Intellectual Property..........................................................................46
      8.20     Compliance with Laws...........................................................................46
      8.21     Permitted Acquisitions.........................................................................46
      8.22     Regulation U...................................................................................46
      8.23     Tradenames.....................................................................................47
      8.24     Year 2000 Compliance...........................................................................47
      8.25     No Default.....................................................................................47
      8.26     Full Disclosure................................................................................47
      8.27     Senior Notes...................................................................................47
      8.28     Benchmark Budget...............................................................................47

SECTION 9      COVENANTS......................................................................................47
      9.1      Use of Proceeds................................................................................48
      9.2      Books and Records..............................................................................48
      9.3      Items to be Furnished..........................................................................48
      9.4      Inspections....................................................................................51

                                                       (ii)

<PAGE>

      9.5      Taxes..........................................................................................51
      9.6      Payment of Obligations.........................................................................51
      9.7      Maintenance of Existence, Assets, and Business.................................................51
      9.8      Insurance......................................................................................52
      9.9      Preservation and Protection of Rights..........................................................52
      9.10     Employee Benefit Plans.........................................................................52
      9.11     Environmental Laws.............................................................................52
      9.12     Debt and Guaranties............................................................................53
      9.13     Liens..........................................................................................53
      9.14     Transactions with Affiliates...................................................................54
      9.15     Compliance with Laws and Documents.............................................................54
      9.16     Permitted Acquisitions, Subsidiary Guaranties, and Collateral Documents........................54
      9.17     Assignment.....................................................................................54
      9.18     Fiscal Year and Accounting Methods.............................................................54
      9.19     Government Regulations.........................................................................55
      9.20     Loans, Advances, and Investments...............................................................55
      9.21     Distributions..................................................................................55
      9.22     Restrictions on Subsidiaries...................................................................56
      9.23     Sale of Assets.................................................................................56
      9.24     Sale-Leaseback Financings......................................................................56
      9.25     Mergers and Dissolutions; Sale of Capital Stock................................................56
      9.26     New Business...................................................................................56
      9.27     Affiliate Subordination Agreements.............................................................56
      9.28     Amendments to Documents........................................................................57
      9.29     Financial Covenants............................................................................57
      9.30     Year 2000......................................................................................60
      9.31     Cash Balances..................................................................................60
      9.32     ...............................................................................................60
      Covenants of Parent.....................................................................................60

SECTION 10     DEFAULT........................................................................................62
      10.1     Payment of Obligation..........................................................................62
      10.2     Covenants......................................................................................62
      10.3     Debtor Relief..................................................................................62
      10.4     Judgments and Attachments......................................................................63
      10.5     Government Action..............................................................................63
      10.6     Misrepresentation..............................................................................63
      10.7     Change of Control..............................................................................63
      10.8     Authorizations.................................................................................63
      10.9     Default Under Other Debt and Agreements........................................................64
      10.10    Employee Benefit Plans.........................................................................64
      10.11    LCs............................................................................................64
      10.12    Validity and Enforceability of Loan Papers.....................................................64
      10.13    Material Adverse Effect........................................................................65
      10.14    Environmental Liability........................................................................65
      10.15    Pledged Stock..................................................................................65
      10.16    Dissolution....................................................................................65
      10.17    Payment of Certain Other Agreements............................................................65
      10.18    Default or Acceleration under Certain Other Agreements.........................................65

                                                      (iii)

<PAGE>

      10.19    Redemption of Certain Other Debt or Obligation.................................................65
      10.20    Certain Deliveries.............................................................................65
      10.21    New Capital....................................................................................66

SECTION 11     RIGHTS AND REMEDIES............................................................................66
      11.1     Remedies Upon Default..........................................................................66
      11.2     Company Waivers................................................................................66
      11.3     Performance by Administrative Agent............................................................67
      11.4     Delegation of Duties and Rights................................................................67
      11.5     Not in Control.................................................................................67
      11.6     Course of Dealing..............................................................................67
      11.7     Cumulative Rights..............................................................................67
      11.8     Application of Proceeds........................................................................68
      11.9     Certain Proceedings............................................................................68
      11.10    Limitation of Rights...........................................................................68
      11.11    Expenditures by Lenders........................................................................68
      11.12    INDEMNIFICATION................................................................................68

SECTION 12     AGREEMENT AMONG LENDERS........................................................................69
      12.1     Administrative Agent...........................................................................69
      12.2     Expenses.......................................................................................71
      12.3     Proportionate Absorption of Losses.............................................................71
      12.4     Delegation of Duties; Reliance.................................................................71
      12.5     Limitation of Liability........................................................................71
      12.6     Default; Collateral............................................................................72
      12.7     Limitation of Liability........................................................................74
      12.8     Relationship of Lenders........................................................................74
      12.9     Benefits of Agreement..........................................................................74
      12.10    Agents.........................................................................................74
      12.11    Obligations Several............................................................................74
      12.12    Financial Hedges...............................................................................74

SECTION 13     MISCELLANEOUS..................................................................................75
      13.1     Headings.......................................................................................75
      13.2     Nonbusiness Days...............................................................................75
      13.3     Communications.................................................................................75
      13.4     Form and Number of Documents...................................................................75
      13.5     Exceptions to Covenants........................................................................75
      13.6     Survival.......................................................................................75
      13.7     Governing Law..................................................................................76
      13.8     Invalid Provisions.............................................................................76
      13.9     Entirety.......................................................................................76
      13.10    Jurisdiction; Venue; Service of Process; Jury Trial............................................76
      13.11    Amendments, Consents, Conflicts, and Waivers...................................................77
      13.12    Multiple Counterparts..........................................................................78
      13.13    Successors and Assigns; Assignments and Participations.........................................78
      13.14    Discharge Only Upon Payment in Full; Reinstatement in Certain Circumstances....................80
      13.15    Restatement of Existing Agreement..............................................................80

</TABLE>

                                                       (iv)

<PAGE>

                             SCHEDULES AND EXHIBITS

<TABLE>
<S>                       <C>     <C>
Schedule 1.1              -       Benchmark Budget
Schedule 2.1              -       Lenders and Commitments
Schedule 6.6              -       Assets Subject to Negative Pledge
Schedule 7.1              -       Conditions Precedent to Closing
Schedule 7.2              -       Conditions Precedent to Permitted Acquisition
Schedule 7.4              -       Conditions Precedent to Additional Borrower
Schedule 8.2              -       FCC and PUC Authorizations
Schedule 8.3              -       Corporate Stock and Partnership Interests
Schedule 8.15             -       Material Agreements
Schedule 8.19             -       Intellectual Property
Schedule 8.23             -       Tradenames
Schedule 9.14             -       Transactions with Affiliates

Exhibit A                 -        Form of Amended and Restated Note
Exhibit B-1               -        Form of Notice of Borrowing
Exhibit B-2               -        Form of Notice of Conversion
Exhibit B-3               -        Form of Notice of LC
Exhibit C-1               -        Form of Guaranty
Exhibit C-2               -        Form of Limited Guaranty for DCCLP
Exhibit C-3               -        Form of Capital Contribution and Subordinated Loan Agreement
Exhibit D-1               -        Form of Pledge, Assignment, and Security
                                   Agreement for Companies
Exhibit D-2               -        Form of Pledge, Assignment, and Security
                                   Agreement for Parent
Exhibit E-1               -        Form of Compliance Certificate
Exhibit E-2               -        Form of Permitted Acquisition Compliance Certificate
Exhibit E-3               -        Form of Permitted Acquisition Loan Closing Certificate
Exhibit E-4               -        Form of Borrowing Base Report
Exhibit E-5               -        Form of Monthly Management Report
Exhibit F                 -        Form of Assignment and Acceptance Agreement
Exhibit G                 -        Form of Opinion of Counsel of Borrower
Exhibit H                 -        Form of Affiliate Subordination Agreement
Exhibit I                 -        Form of Mortgage, Deed of Trust, Security
                                   Agreement, Assignment of Rents, and Financing Statement
Exhibit J                 -        Form of Landlord Consent and Estoppel Certificate

</TABLE>

                                                      (v)

<PAGE>

                              AMENDED AND RESTATED
                           REVOLVING CREDIT AGREEMENT

         THIS AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT is entered into as
of September 13, 1999, among LOGIX COMMUNICATIONS CORPORATION, an Oklahoma
corporation ("BORROWER"), LOGIX COMMUNICATIONS ENTERPRISES, INC., an Oklahoma
corporation ("PARENT"), BANC OF AMERICA SECURITIES LLC, as Arranger (defined
below), Lenders (defined below), CANADIAN IMPERIAL BANK OF COMMERCE, as
Syndication Agent (defined below), TORONTO DOMINION (TEXAS), INC., as
Documentation Agent (defined below), and BANK OF AMERICA, N.A., as
Administrative Agent (defined below), for itself and the other Lenders. Parent
has executed this Credit Agreement for the limited purpose of making the
representations and warranties set forth in SECTION 8 and agreeing to the
covenants set forth in SECTION 9 and the indemnification provisions of SECTION
11.12.

                                    RECITALS

         A. Borrower has entered into the Credit Agreement (as amended on June
29, 1999, and as further renewed, extended, or amended to date, the "EXISTING
AGREEMENT") dated as of April 7, 1999, with Bank of America, N.A., formerly
known as Bank of America National Trust and Savings Association, successor by
merger to Bank of America, N.A., formerly known as NationsBank, N.A. (in its
capacity as "ADMINISTRATIVE AGENT" thereunder and as a Lender) and certain other
Lenders party thereto (together with Bank of America, N.A., the "EXISTING
LENDERS"), providing for, among other things, a revolving credit facility in the
aggregate principal amount of $50,000,000.

         B. Subject to the terms and conditions set forth below, Borrower and
Lenders desire to entirely amend, modify, and restate the Existing Agreement.

         C. The amendment and restatement of the Existing Agreement hereunder is
not intended by the parties to constitute either a novation or a discharge or
satisfaction of the indebtedness and obligations under the Existing Agreement,
which indebtedness and obligations under the Existing Agreement shall remain
outstanding hereunder on the terms and conditions hereinafter provided.

         In consideration of the foregoing and the mutual covenants contained
herein, Borrower, Bank of America, N.A. (in its capacity as Administrative Agent
under this Agreement and the Existing Agreement), and Lenders agree that,
effective upon the Closing Date, the Existing Agreement is amended and restated
in its entirety, as follows:

SECTION 1 DEFINITIONS AND TERMS.

         1.1 DEFINITIONS.  As used herein:

         ACCESS LINE means each installed, activated, and in-service
telecommunications or data line that (a) provides service to a customer of
Logix, (b) is subject to a valid and enforceable contractual agreement entered
into with a business customer for a period of time of not less than twelve
months, (c) is provided to business customers receiving treatment substantially
similar to other business customers offered such services by Logix, and (d) is
reasonably expected to generate revenue within at least three months and one day
after activation; PROVIDED THAT, CLAUSES (b) and (c) preceding shall not apply
to up to one thousand residential customers of Logix; and CLAUSE (b) preceding
shall not apply to up to one thousand business customers of Logix.

<PAGE>

         ACQUISITION means any transaction or series of related transactions for
the purpose of, or resulting in, directly or indirectly, (a) the acquisition by
any Person or substantially all of the assets of another Person or of any
business or division of another Person, (b) the acquisition by any Person of
more than 50% of any class of Voting Stock (or similar ownership interests) of
another Person (PROVIDED THAT, formation or organization of any entity shall not
constitute an "ACQUISITION" to the extent that the amount of the loan, advance,
investment, or capital contribution in such entity constitutes a permitted
investment under SECTION 9.20); or (c) a merger, consolidation, amalgamation, or
other combination by any Person with another Person; PROVIDED THAT in any merger
or consolidation involving any Company, that Company must be the surviving
entity, and in any merger or consolidation involving Borrower, Borrower must be
the surviving entity.

         ADDITIONAL ASSETS is defined in SECTION 6.4.

         ADDITIONAL BORROWER means any Subsidiary of Parent (a) that is
acceptable to Required Lenders in their sole discretion (PROVIDED THAT, solely
in the case of Dobson Telephone, such approval of Required Lenders shall not be
unreasonably withheld); (b) that enters into appropriate supplemental agreements
to the Loan Papers to become a Borrower under this Agreement; (c) whose
outstanding capital stock is pledged to Administrative Agent for the ratable
benefit of Lenders; (d) who grants and conveys to, and creates in favor of
Administrative Agent for the ratable benefit of Lenders, first priority Liens
in, to, and on all of its assets, and (e) who, prior to or concurrently with
becoming an Additional Borrower, satisfies all conditions and requirements set
forth in SECTION 7.4 and on SCHEDULE 7.4.

         ADJUSTED EURODOLLAR RATE means, for any Eurodollar Rate Borrowing for
any Interest Period therefor, the rate per annum (rounded upwards, if necessary,
to the nearest 1/100 of 1%) determined by the Administrative Agent to be equal
to the quotient obtained by dividing (a) the Eurodollar Rate for such Eurodollar
Rate Borrowing for such Interest Period by (b) 1 MINUS the Reserve Requirement
for such Eurodollar Rate Borrowing for such Interest Period.

         ADMINISTRATIVE AGENT means Bank of America, N.A., and its permitted
successors or assigns as "ADMINISTRATIVE AGENT" for Lenders under this
Agreement.

         AFFILIATE of any Person means any other individual or entity who
directly or indirectly controls, or is controlled by, or is under common control
with, such Person, and, for purposes of this definition only, "CONTROL,"
"CONTROLLED BY," and "UNDER COMMON CONTROL WITH" mean possession, directly or
indirectly, of the power to direct or cause the direction of management or
policies (whether through ownership of voting securities, by contract, or
otherwise).

         AGENTS means, collectively, the Administrative Agent, the Syndication
Agent, and the Documentation Agent.

         AGREEMENT means this Amended and Restated Revolving Credit Agreement
(as the same may hereafter be amended, modified, supplemented, or restated from
time to time).

         APPLICABLE LENDING OFFICE means, for each Lender and for each Type of
Borrowing, the "LENDING OFFICE" of such Lender (or an Affiliate of such Lender)
designated on SCHEDULE 2.1 or such other office that such Lender (or an
Affiliate of such Lender) may from time to time specify to Administrative Agent
and Borrower by written notice in accordance with the terms hereof.

                                       2

<PAGE>

         APPLICABLE MARGIN means (a) on any date of determination on and after
the Closing Date until (but not including) the Phase II Notice Date, 4.00% for
Eurodollar Rate Borrowings and 3.00% for Base Rate Borrowings; and (b) on any
date of determination on or after the Phase II Notice Date, with respect to each
Base Rate Borrowing or Eurodollar Rate Borrowing, the percentage per annum set
forth in the table below that corresponds with the Consolidated Leverage Ratio
at such date of determination, as calculated based on the quarterly Compliance
Certificate of Parent most recently delivered pursuant to SECTION 9.3:

<TABLE>
<CAPTION>

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

               CONSOLIDATED                                           APPLICABLE MARGIN
              LEVERAGE RATIO
                                           -------------------------------------------------------------------------
                                                  BASE RATE BORROWINGS             EURODOLLAR RATE BORROWINGS
<S>                                        <C>                                     <C>
--------------------------------------------------------------------------------------------------------------------
     Less than or equal to 4.50:1.00                     1.50%                                2.50%
--------------------------------------------------------------------------------------------------------------------
     Less than or equal to 6.00:1.00,
        but greater than 4.50:1.00                       2.00%                                3.00%
--------------------------------------------------------------------------------------------------------------------
     Less than or equal to 7.50:1.00,
        but greater than 6.00:1.00                       2.50%                                3.50%
--------------------------------------------------------------------------------------------------------------------
          Greater than 7.50:1.00                         3.00%                                4.00%
--------------------------------------------------------------------------------------------------------------------

</TABLE>

The provisions in ITEMS (a) and (b) are further subject to the following:

                           (i) With respect to any adjustments in the Applicable
                  Margin as a result of changes in the Consolidated Leverage
                  Ratio, such adjustment shall be effective commencing on the
                  second Business Day after the delivery of Financial Statements
                  (and the related Compliance Certificate) pursuant to SECTION
                  9.3(a), SECTION 9.3(c), or the most recent Permitted
                  Acquisition Compliance Certificate for a Permitted
                  Acquisition, as the case may be.

                           (ii) On and after the Phase II Notice Date, if
                  Borrower fails to timely furnish to Lenders the Financial
                  Statements and related Compliance Certificates as required to
                  be delivered pursuant to SECTIONS 9.3(a) and (c), and such
                  failure shall not be remedied within five days after written
                  notice thereof from the Administrative Agent or any Lender,
                  then the Applicable Margin shall be the maximum Applicable
                  Margin specified above.

         APPLICABLE MARGIN FOR COMMITMENT FEES means, (a) on any date of
determination on or after the Closing Date until (but not including) the Phase
II Notice Date, 1.50%, and (b) at any date of determination occurring on and
after the Phase II Notice Date, the percentage set forth in the table below
which corresponds with the ratio (expressed as a percentage) of (i) the average
daily Commitment Usage for any period of determination to (ii) the Commitment at
such date of determination:

<TABLE>
<CAPTION>

---------------------------------------------- -----------------------------------
              COMMITMENT USAGE/                 APPLICABLE MARGIN FOR COMMITMENT
                 COMMITMENT                                   FEES
<S>                                            <C>
---------------------------------------------- -----------------------------------
          Less than or equal to 33%                          1.50%
---------------------------------------------- -----------------------------------
         Less than or equal to 67%,
            but greater than 33%                             1.125%
---------------------------------------------- -----------------------------------
              Greater than 67%                               0.75%
---------------------------------------------- -----------------------------------

</TABLE>

                                       3

<PAGE>

         APPLICABLE PERCENTAGE means, with respect to each Lender on any date of
determination, the percentage stated opposite such Lender's name as set forth on
SCHEDULE 2.1 or on the most recently-amended SCHEDULE 2.1, if any, prepared by
Administrative Agent pursuant to SECTION 13.13 (to reflect assignments by
Lenders).

         ARRANGER means Banc of America Securities LLC, and its permitted
successors or assigns, in its capacity as sole lead arranger and book manager
under the Loan Papers.

         ASSUMED TAXES means, (a) with respect to any Equity Issuance by Parent
or any Company, an amount equal to such incremental annual increase in franchise
Taxes as such Person estimates in good faith to be payable by such Person as a
result of such Equity Issuance, and (b) with respect to any Significant Sale by
any Company, an amount equal to such percentage as such Person estimates in good
faith to be its effective rate of the taxable gain for federal and state income
tax purposes with respect to such Significant Sale.

         AUTHORIZATIONS means all filings, recordings, and registrations with,
and all validations or exemptions, approvals, orders, authorizations, consents,
franchises, licenses, certificates of compliance and other certificates,
permits, qualifications, adjudications, or orders from, any Governmental
Authority (including, without limitation, the FCC and applicable PUCs),
including, without limitation, any of the foregoing authorizing or permitting
the acquisition, construction, or operation of any network facility or any other
telecommunication system.

         AVAILABLE COMMITMENT means, at any date of determination, an amount
(subject to reduction or cancellation in accordance with the terms of the Loan
Papers) equal to the LESSER of (a) the Maximum Availability, (b) the Borrowing
Base Availability, or (c) the Commitment.

         BANK OF AMERICA, N.A. means Bank of America, N.A., in its individual
capacity as a Lender, and its successors and assigns.

         BASE RATE means, for any day, the rate per annum equal to the HIGHER of
(a) the Federal Funds Rate for such day PLUS one-half of one percent (.5%) and
(b) the Prime Rate for such day. Any change in the Base Rate due to a change in
the Prime Rate or the Federal Funds Rate shall be effective on the effective
date of such change in the Prime Rate or the Federal Funds Rate.

         BASE RATE BORROWING means a Borrowing bearing interest at the SUM of
the Base Rate PLUS the Applicable Margin for Base Rate Borrowings.

         BENCHMARK BUDGET means, collectively, (a) the budgets dated August 31,
1999, set forth on SCHEDULE 1.1, reflecting the projected income and expenses on
a monthly basis from the Closing Date through the Termination Date for the
following entities: (i) Parent and its Subsidiaries; (ii) the Logix Group,
itemizing separate budget projections for the Fiber Business and the CLEC
Business; and (iii) Dobson Telephone and its Subsidiaries; and (b) subject to
the prior consent of Required Lenders, any adjustments or modifications to all
or any portion of the Benchmark Budgets, including, without limitation, any
adjustments required to reflect any Permitted Acquisitions.

         BORROWER, whether one or more, means Logix, any Additional Borrower,
and their respective permitted successors or assigns under the Loan Papers.

                                       4

<PAGE>

         BORROWING means any amount disbursed (a) by one or more Lenders to
Borrower under the Loan Papers, whether such amount constitutes an original
disbursement of funds, the continuation of an amount outstanding, or payment of
a draft under an LC, or (b) by any Lender in accordance with, and to satisfy the
obligations of any Company under, any Loan Paper.

         BORROWING BASE AVAILABILITY means, at any date of determination, an
amount equal to the SUM of (a) the CLEC Availability, (b) the Dobson Telephone
Availability, and (c) the Fiber Availability.

         BORROWING BASE REPORT means a report certified by a Responsible
Officer, substantially in the form of EXHIBIT E-4.

         BORROWING DATE is defined in SECTION 2.5(a).

         BUSINESS DAY means (a) for all purposes, any day OTHER THAN Saturday,
Sunday, and any other day on which commercial banking institutions are required
or authorized by Law to be closed in Dallas, Texas, and (b) in addition to the
foregoing, in respect of any Eurodollar Rate Borrowing, a day on which dealings
in United States dollars are conducted in the London interbank market and
commercial banks are open for international business in London.

         CAPITAL CONTRIBUTION means any capital contribution or common equity
contribution paid by Parent in cash to Borrower after the Closing Date.

         CAPITAL CONTRIBUTION AGREEMENT means the Capital Contribution and
Subordinated Loan Agreement in substantially the form of EXHIBIT C-3, dated
September 13, 1999, among Logix, Parent, DCCLP, and Administrative Agent, as
amended, modified, supplemented, or restated in accordance with the Loan Papers.

         CAPITAL EXPENDITURES means an expenditure for any fixed asset having a
useful life of more than one year, or any improvements or additions thereto,
including the direct or indirect acquisition of such assets, and including any
obligations to pay rent or other amounts under a Capital Lease; PROVIDED,
HOWEVER, such Capital Expenditures shall not include acquisitions of stock or
assets which are made in accordance with SECTION 9.20.

         CAPITAL LEASE means any capital lease or sublease which should be
capitalized on a balance sheet in accordance with GAAP.

         CASH EQUIVALENTS means:

                  (a) Readily marketable, direct, full faith and credit
         obligations of the United States of America, or obligations guaranteed
         by the full faith and credit of the United States of America, maturing
         within not more than one year from the date of acquisition;

                  (b) Short term certificates of deposit and time deposits,
         which mature within one year from the date of issuance and which are
         fully insured by the Federal Deposit Insurance Corporation;

                  (c) Commercial paper maturing in 365 days or less from the
         date of issuance and rated either "P-1" by Moody's Investors Service,
         Inc. ("MOODY'S"), or "A-1" by Standard and Poor's Rating Group (a
         division of McGraw-Hill, Inc., "S&P");

                                       5

<PAGE>

                  (d) Debt instruments of a domestic issuer which mature in one
         year or less and which are rated "A" or better by Moody's or S&P on the
         date of acquisition of such investment; and

                  (e) Demand deposit accounts which are maintained in the
ordinary course of business.

         CLEC ACCESS LINES means, on any date of determination, collectively
(without duplication) CLEC Resale Access Lines, CLEC UNE-P Access Lines, and
CLEC On-Switch Access Lines.

         CLEC AVAILABILITY means, for CLEC Business, as calculated at any date
of determination with respect to the calendar month most recently-ended for
which a Borrowing Base Report has been delivered, the SUM of (a) the PRODUCT of
the number of CLEC Resale Access Lines MULTIPLIED by $250; PLUS (b) the PRODUCT
of the number of CLEC UNE-P Access Lines MULTIPLIED by $750; PLUS (c) the
PRODUCT of the number of CLEC On-Switch Access Lines MULTIPLIED by $975; MINUS
(d) the amount of all accounts receivable for the CLEC Business that are 90 or
more days past due; PROVIDED THAT, no Access Line may be used to support more
than one of the calculations set forth in CLAUSES (a), (b), or (c) preceding.

         CLEC BUSINESS means that certain line of business conducted by Logix
relating to the provision of (a) local exchange services, (b) enhanced data
services, (c) internet, intranet, and extranet services, (d) interexchange, long
distance services, (e) private line services, and (f) integration services.

         CLEC INTEREST EXPENSE means, at any date of determination, (a) with
respect to the first fiscal quarter immediately following the Qualifying Period,
the Interest Expense of the CLEC Business for such period MULTIPLIED by four;
(b) with respect to the second fiscal quarter immediately following the
Qualifying Period, the Interest Expense of the CLEC Business for the first and
second fiscal quarters immediately following the Qualifying Period MULTIPLIED by
two; (c) with respect to the third fiscal quarter immediately following the
Qualifying Period, the Interest Expense of the CLEC Business for the first,
second, and third fiscal quarters immediately following the Qualifying Period
MULTIPLIED by 4/3; and (d) thereafter, the Interest Expense of the CLEC Business
for the Rolling Period then most recently ended; PROVIDED THAT if the Phase II
Commencement Date has not occurred prior to July 1, 2001, then the CLEC Interest
Expense shall be calculated on any date of determination for the Rolling Period
then most recently ended; PROVIDED FURTHER THAT CLEC INTEREST EXPENSE shall also
include, in any relevant period of calculation, the aggregate amount of cash
interest paid on the Senior Notes to the extent Borrower makes loans, advances,
investments, or Distributions to Parent to service regularly-scheduled cash
interest payments on such Senior Notes during such period.

         CLEC ON-SWITCH ACCESS LINE means an Access Line of the CLEC Business
leased by Logix from another carrier, which Access Line is not a CLEC Resale
Access Line or a CLEC UNE-P Access Line and over which Logix provides switched
services on its network to customers of the CLEC Business.

         CLEC OPERATING CASH FLOW means, at any date of determination, (a) with
respect to the first fiscal quarter immediately following the Qualifying Period,
the Operating Cash Flow of the CLEC Business for such period MULTIPLIED by four;
(b) with respect to the second fiscal quarter immediately following the
Qualifying Period, the Operating Cash Flow of the CLEC Business for the first
and second fiscal quarters immediately following the Qualifying Period
MULTIPLIED by two; (c) with respect to the third fiscal quarter immediately
following the Qualifying Period, the Operating Cash Flow of the CLEC Business
for the first, second, and third fiscal quarters immediately following the
Qualifying Period MULTIPLIED by 4/3; and (d) thereafter, the Operating Cash Flow
of the CLEC Business calculated for the Rolling Period then most recently ended;
PROVIDED THAT (i) if the Phase II Commencement Date has not occurred prior to
July 1, 2001, then the CLEC Operating Cash Flow shall be calculated on any date
of determination for the Rolling Period then most recently ended, (ii) in
calculating CLEC Operating Cash Flow, adjustments for Interest Expense

                                       6

<PAGE>

shall be made on the basis of CLEC Interest Expense, and (iii) for any date
of determination occurring on or after the Phase II Commencement Date, but
prior to the first date after the Qualifying Period on which Financial
Statements are delivered pursuant to EITHER SECTION 9.3(a) or 9.3(c), CLEC
Operating Cash Flow shall be the Operating Cash Flow of the CLEC Business for
the Qualifying Period MULTIPLIED by 2.

         CLEC RESALE ACCESS LINE means an Access Line that is leased by Logix
from another carrier at a price OTHER THAN a "UNE-P" RATE and which Access Line
is resold by Logix to customers of the CLEC Business.

         CLEC UNE-P ACCESS LINE means an Access Line that is leased by Logix
from an ILEC as part of the unbundled network elements provided by such ILEC to
Logix at a "UNE-P" RATE and which Access Line is resold by Logix to customers of
the CLEC Business.

         CLOSING DATE means the date upon which (a) this Agreement has been
executed by Logix, Lenders, and Agents, and (b) all conditions precedent
specified in SECTION 7.1 have been satisfied or waived, which date must be, if
at all, a Business Day occurring no later than September , 1999.

         CODE means the INTERNAL REVENUE CODE OF 1986, as amended, TOGETHER WITH
the rules and regulations promulgated thereunder.

         COLLATERAL has the meaning set forth in SECTION 6.1.

         COLLATERAL DOCUMENTS means all security agreements, pledge agreements,
mortgages, deeds of trust, financing statements, assignments of partnership
interests, and Guaranties at any time delivered to Administrative Agent to
create or evidence Liens securing the Obligation, TOGETHER WITH all
reaffirmations, amendments, and modifications thereof or supplements thereto
made in accordance with the Loan Papers.

         COMMENCEMENT DATE is defined in SECTION 9.29(g).

         COMMITMENT means, on any date of determination, an amount equal to
$50,000,000 (as the same may be reduced, canceled, or increased in accordance
with the terms of the Loan Papers).

         COMMITMENT FEE is defined in SECTION 5.5.

         COMMITMENT REDUCTION AMOUNT is defined in SECTION 2.3(b).

         COMMITMENT USAGE means, at the time of any determination thereof, the
SUM of (a) the aggregate Principal Debt PLUS, WITHOUT DUPLICATION, (b) the LC
Exposure.

         COMMITTED SUM means, for any Lender, on any date of determination, an
amount equal to such Lender's Applicable Percentage of the Commitment.

         COMMON STOCK is defined in SECTION 10.7.

         COMMUNICATIONS means Dobson Communications Corporation, an Oklahoma
corporation.

         COMMUNICATIONS ACT means, collectively, The Federal Communications Act
of 1934, as amended from time to time, and the rules and regulations in effect
at any time thereunder.

                                       7

<PAGE>

         COMPANIES means, at any date of determination thereof, Borrower and
each of its Subsidiaries; and COMPANY means, on any date of determination,
Borrower or any of its Subsidiaries.

         COMPLIANCE CERTIFICATE means a certificate signed by a Responsible
Officer, substantially in the form of EXHIBIT E-1.

         CONSEQUENTIAL LOSS means any loss, cost, or expense (including loss of
anticipated profit) which any Lender may reasonably incur in respect of a
Eurodollar Rate Borrowing as a consequence of any event described in SECTION
4.5.

         CONSOLIDATED LEVERAGE RATIO means, on any date of determination, the
ratio of (a) the Debt of Parent and its Subsidiaries EXCEPT Fiber/FORTE
(calculated on a consolidated basis) to (b) Operating Cash Flow of Parent and
its Subsidiaries EXCEPT Fiber/FORTE (calculated on a consolidated basis).

         CONTRIBUTION COMPLIANCE DATE means (a) the earlier of January 31, 2000,
or the date upon which the Principal Debt equals the Available Commitment (after
giving effect to all prepayments on such date) if Parent has not commenced to
make Capital Contributions pursuant to, and in accordance with, the Capital
Contribution Agreement prior to such date; or (b) March 31, 2000, if Parent has
commenced to make Capital Contributions pursuant to, and in accordance with, the
Capital Contribution Agreement prior to the date described in CLAUSE (a)
preceding.

         CURRENT FINANCIALS means, on any date of determination, the most
recently delivered to Lenders of (a) the Financial Statements for the fiscal
year ended December 31, 1998, prepared for each of (i) Parent and its
Subsidiaries, calculated on a consolidated and consolidating basis, (ii) the
Logix Group, calculated on a consolidated basis, but also separately detailing
(in form and substance satisfactory to Agents) balance sheets and statements of
operations and cash flows for each of the Fiber Business and the CLEC Business,
and (iii) Dobson Telephone and its Subsidiaries, or (b) the Financial Statements
required to be delivered under SECTIONS 9.3(a), 9.3(b), and 9.3(c), as the case
may be.

         DARK FIBER means installed fiber optic cable not carrying a signal
(through which no light is transmitted).

         DCCLP means Dobson CC Limited Partnership, an Oklahoma limited
partnership.

         DCCLP LIMITED GUARANTY means a limited Guaranty in substantially the
form and upon the terms of EXHIBIT C-2, executed and delivered by DCCLP pursuant
to the requirements of the Loan Papers, as amended, modified, supplemented,
restated, ratified, or reaffirmed in accordance with the Loan Papers.

         DEBT means, WITHOUT DUPLICATION, for any Person, the SUM of the
following: (a) all liabilities, obligations, and indebtedness of such Person
which in accordance with GAAP should be classified upon such Person's balance
sheet as liabilities in respect of (i) money borrowed, including, without
limitation, the Principal Debt, (ii) obligations of such Person under Capital
Leases, (iii) obligations of such Person under non-compete agreements, and (iv)
obligations of such Person issued or assumed as the deferred purchase price of
property, all conditional sale obligations, and obligations under any title
retention agreement (but excluding trade accounts payable arising in the
ordinary course of business not more than 90 days past due); (b) all obligations
of the type referred to in CLAUSES (a)(i) through (a)(iii) preceding of other
Persons for the payment of which such Person is responsible or liable as
obligor, guarantor, or otherwise; (c) all obligations of the type referred to in
CLAUSES (a)(i) through CLAUSE (a)(iii) and CLAUSE (b) preceding of other Persons
secured by any Lien on any property or asset of such Person (whether or not such
obligation is assumed by such Person), the amount of such obligation being
deemed to be the LESSER of the value of such property or

                                       8

<PAGE>

assets or the amount of the obligation so secured; (d) the face amount of all
letters of credit and banker's acceptances issued for the account of such
Person, and WITHOUT DUPLICATION, all drafts drawn and unpaid thereunder; and
(e) all obligations and liabilities of such Person in connection with
Financial Hedges.

         DEBT ISSUANCE means Debt of any Loan Party for borrowed money issued or
incurred after the Closing Date, OTHER THAN Permitted Debt.

         DEBT SERVICE means, at any date of determination, calculated for the
fiscal quarter then most recently ended, for the Companies or Dobson Telephone
and its Subsidiaries, as the case may be, the SUM of (a) Interest Expense during
such period, PLUS (b) the amount of scheduled principal payments paid, or
required to be paid, on Debt during such period PLUS (c) with respect to the
Obligation, the amount by which the Commitment is required to be reduced during
such period.

         DEBTOR RELIEF LAWS means the BANKRUPTCY CODE OF THE UNITED STATES OF
AMERICA and all other applicable liquidation, conservatorship, bankruptcy,
moratorium, rearrangement, receivership, insolvency, reorganization, fraudulent
transfer or conveyance, suspension of payments, or similar Laws from time to
time in effect affecting the Rights of creditors generally.

         DEFAULT is defined in SECTION 10.

         DEFAULT RATE means a per annum rate of interest equal from day to day
to the LESSER of (a) the SUM of the Base Rate PLUS the highest Applicable Margin
for Base Rate Borrowings PLUS 2.0% AND (b) the Maximum Rate.

         DISTRIBUTION for any Person means, with respect to any shares of any
capital stock or other equity securities issued by such Person, (a) the
retirement, redemption, purchase, or other acquisition for value of any such
securities, (b) the declaration or payment of any dividend on or with respect to
any such securities, and (c) any other payment by such Person with respect to
such securities.

         DOBSON TELEPHONE means Dobson Telephone Company, Inc., an Oklahoma
corporation and a Wholly-owned Subsidiary of Parent.

         DOBSON TELEPHONE AVAILABILITY means, at any date of determination, (a)
the PRODUCT of the Operating Cash Flow of Dobson Telephone and its Subsidiaries
for the most recently-ended twelve-calendar month period as reported on the most
recently-delivered Borrowing Base Report, MULTIPLIED by 5, MINUS (b) the
outstanding principal balance under the RUS/RTB Debt at such date of
determination.

         DOCUMENTATION AGENT means Toronto Dominion (Texas), Inc., and its
permitted successors or assigns as "DOCUMENTATION AGENT" under this Agreement.

         DOLLARS and the symbol $ means lawful money of the United States of
America.

         ELIGIBLE ASSIGNEE means (a) a Lender; (b) an Affiliate of a Lender (SO
LONG AS such assignment is not made in conjunction with the sale of such
Affiliate); and (c) any other Person approved by Administrative Agent (which
approval will not be unreasonably withheld or delayed by Administrative Agent)
and, UNLESS a Default or Potential Default has occurred and is continuing at the
time any assignment is effected in accordance with SECTION 13.13, Borrower, such
approval not to be unreasonably withheld or delayed by Borrower and such
approval to be deemed given by Borrower if no objection is received by the
assigning Lender and the Administrative Agent from Borrower within five Business
Days after notice of such proposed

                                       9

<PAGE>

assignment has been provided by the assigning Lender to Borrower; PROVIDED,
HOWEVER, that neither Borrower nor any Affiliate of Borrower shall qualify as
an Eligible Assignee.

         EMPLOYEE PLAN means an employee pension benefit plan covered by TITLE
IV of ERISA and established or maintained by a Loan Party or any ERISA
Affiliate, but not including any Multiemployer Plan.

         ENVIRONMENTAL LAW means any applicable Law that relates to (a) the
condition or protection of air, groundwater, surface water, soil, or other
environmental media, (b) the environment, including natural resources or any
activity which affects the environment, (c) the regulation of any pollutants,
contaminants, wastes, substances, and Hazardous Substances, including,
without limitation, the Comprehensive Environmental Response, Compensation,
and Liability Act (42 U.S.C. Section 9601 ET SEQ.) ("CERCLA"), the Clean Air
Act (42 U.S.C. Section 7401 ET SEQ.), the Federal Water Pollution Control
Act, as amended by the Clean Water Act (33 U.S.C. Section 1251 ET SEQ.), the
Federal Insecticide, Fungicide, and Rodenticide Act (7 U.S.C. Section 136 ET
SEQ.), the Emergency Planning and Community Right to Know Act of 1986 (42
U.S.C. Section 11001 ET SEQ.), the Hazardous Materials Transportation Act (49
U.S.C. Section 1801 ET SEQ.), the National Environmental Policy Act of 1969
(42 U.S.C. Section 4321 ET SEQ.), the Oil Pollution Act (33 U.S.C. Section
2701 ET SEQ.), the Resource Conservation and Recovery Act (42 U.S.C. Section
6901 ET SEQ.), the Rivers and Harbors Act (33 U.S.C. Section 401 ET SEQ.),
the Safe Drinking Water Act (42 U.S.C. Section 201 and Section 300f ET SEQ.),
the Solid Waste Disposal Act, as amended by the Resource Conservation and
Recovery Act of 1976 and the Hazardous and Solid Waste Amendments of 1984 (42
U.S.C. Section 6901 ET SEQ.), the Toxic Substances Control Act (15 U.S.C.
Section 2601 ET SEQ.), and analogous state and local Laws, as any of the
foregoing may have been and may be amended or supplemented from time to time,
and any analogous future enacted or adopted Law, or (d) the Release or
threatened Release of Hazardous Substances.

         EQUITY ISSUANCE means the issuance on and after the Closing Date by
Parent or any Company of any shares of any class of stock, warrants, or other
equity interests, OTHER THAN present and future shares of stock, options, or
warrants issued to employees, directors, or consultants of the issuing entity or
stock issued upon their exercise.

         ERISA means the EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, as
amended, and the regulations and rulings thereunder.

         ERISA AFFILIATE means any company or trade or business (whether or not
incorporated) which, for purposes of TITLE IV of ERISA, is a member of a Loan
Party's controlled group or which is under common control with such Person
within the meaning of SECTION 414(b), (c), (m), or (o) of the Code.

         EURODOLLAR RATE means, for any Eurodollar Rate Borrowing for any
Interest Period therefor, the rate per annum (rounded upwards, if necessary, to
the nearest 1/100 of 1%) appearing on Dow Jones Markets Page 3750 (or any
successor page) as the London interbank offered rate for deposits in Dollars at
approximately 11:00 a.m. (London time) two Business Days prior to the first day
of such Interest Period for a term comparable to such Interest Period. If for
any reason such rate is not available, the term "EURODOLLAR RATE" shall mean,
for any Eurodollar Rate Borrowing for any Interest Period therefor, the rate per
annum (rounded upwards, if necessary, to the nearest 1/100 of 1%) appearing on
Reuters Screen LIBO Page as the London interbank offered rate for deposits in
Dollars at approximately 11:00 a.m. (London time) two Business Days prior to the
first day of such Interest Period for a term comparable to such Interest Period;
PROVIDED, HOWEVER, if more than one rate is specified on Reuters Screen LIBO
Page, the applicable rate shall be the arithmetic mean of all such rates
(rounded upwards, if necessary, to the nearest 1/100 of 1%).

                                       10
<PAGE>

         EURODOLLAR RATE BORROWING means a Borrowing bearing interest at the SUM
of the Adjusted Eurodollar Rate PLUS the Applicable Margin for Eurodollar Rate
Borrowings.

         EXHIBIT means an exhibit to this Agreement unless otherwise specified.

         EXISTING AGREEMENT is defined in the Recitals to this Agreement.

         EXISTING COLLATERAL DOCUMENTS is defined in SECTION 6.2.

         EXISTING LENDERS is defined in the Recitals to this Agreement.

         FCC means the Federal Communications Commission and any successor
regulatory body.

         FEDERAL FUNDS RATE means, for any day, the rate per annum (rounded
upwards, if necessary, to the nearest 1/100 of 1%) determined (which
determination shall be conclusive and binding, absent manifest error) by
Administrative Agent to be equal to the weighted average of the rates on
overnight Federal funds transactions with member banks of the Federal Reserve
System arranged by Federal funds brokers on such day, as published by the
Federal Reserve Bank of New York on the Business Day next succeeding such day;
PROVIDED THAT (a) if such day is not a Business Day, the Federal Funds Rate for
such day shall be such rate on such transactions on the next preceding Business
Day as so published on the next succeeding Business Day, and (b) if no such rate
is so published on such next succeeding Business Day, the Federal Funds Rate for
such day shall be the average rate charged to the Administrative Agent (in its
individual capacity) on such day on such transactions as determined by the
Administrative Agent (which determination shall be conclusive and binding,
absent manifest error).

         FIBER AVAILABILITY means, at any date of determination, the PRODUCT of
the revenue earned by the Fiber Business for the most recently-ended twelve
calendar month period, as reported on the most recently-delivered Borrowing Base
Report, MULTIPLIED by 2.5.

         FIBER BUSINESS means all business conducted by Logix (OTHER THAN the
CLEC Business), including, without limitation, the business relating to the
provision of "LONG-HAUL" telecommunications transport services in Texas,
Oklahoma, and Colorado on a wholesale basis to private, business, and government
end-users.

         FIBER/FORTE means Dobson Fiber/FORTE of Colorado, Inc., an Oklahoma
corporation and a Wholly-owned Subsidiary of Parent.

         FINANCIAL HEDGE means (a) a swap, collar, floor, cap, or other contract
which is intended to reduce or eliminate the risk of fluctuations in interest
rates, or (b) any other currency swap or hedging arrangement acceptable to
Administrative Agent in its sole discretion, SO LONG AS, in either case, any
such Financial Hedge obtained by any Loan Party satisfies the following
requirements: (i) any Lender or financial institution issuing such Financial
Hedge shall calculate its credit exposure in a reasonable and customary manner;
(ii) all documentation for such Financial Hedge shall conform to ISDA standards
and must be acceptable to Administrative Agent with respect to any intercreditor
issues; (iii) if issued by any Lender or any Affiliate of a Lender to Borrower,
the credit exposure under such Financial Hedge shall be secured by Liens in and
to the Collateral as evidence by the Collateral Documents on a PARI PASSU basis
with the Liens of Administrative Agent (held for the benefit of Lenders), and
such Lender or Affiliate issuing a Financial Hedge shall, by acceptance of the
benefits of such Liens in the Collateral agree to the provisions of SECTION
12.12; and (iv) such Financial Hedge shall be incurred in the ordinary course of
business and consistent with prior business practices of the Companies and not
for speculative purposes.

                                       11

<PAGE>

         FINANCIAL STATEMENTS means balance sheets, income statements,
statements of operations, statements of shareholders' equity, and statements of
cash flows prepared in accordance with GAAP, which statements of operations and
statements of cash flows shall be in comparative form to the corresponding
period of the preceding fiscal year, and which balance sheets and statements of
shareholders' equity shall be in comparative form to the prior fiscal year-end
figures.

         FIRST CAPITAL DATE means the date upon which: (a) Borrower has received
one or more Capital Contributions after the Closing Date in an aggregate amount
of not less than $50,000,000 from sources OTHER THAN (i) DCCLP or Parent
pursuant to the Capital Contribution Agreement, or (ii) otherwise from DCCLP,
directly or indirectly (which Capital Contributions shall be in form and
substance acceptable to Required Lenders in their reasonable sole discretion);
(b) no Default or Potential Default then exists or arises; and (c) all mandatory
prepayments required pursuant to SECTION 3.3(a)(ii) have been paid.

         GAAP means generally accepted accounting principles of the Accounting
Principles Board of the American Institute of Certified Public Accountants and
the Financial Accounting Standards Board which are applicable from time to time.

         GOVERNMENTAL AUTHORITY means any (a) local, state, municipal, or
federal judicial, executive, or legislative instrumentality, (b) private
arbitration board or panel, or (c) central bank.

         GUARANTOR means any Person, including, but not limited to, Parent,
DCCLP (if prior to the Second Capital Date), and any direct or indirect
Subsidiary of Borrower, who undertakes to be liable for all or any part of the
Obligation by execution of a Guaranty or otherwise.

         GUARANTY means, individually, each of the following, and GUARANTIES
means collectively: (a) a Guaranty in substantially the form and upon the terms
of EXHIBIT C-1, executed and delivered by any Person pursuant to the
requirements of the Loan Papers, as amended, modified, supplemented, restated,
ratified, or reaffirmed in accordance with the Loan Papers, and (b) if prior to
the Second Capital Date, the DCCLP Limited Guaranty.

         HAZARDOUS SUBSTANCE means (a) any substance that is designated,
defined, or classified as a hazardous waste, hazardous material, pollutant,
contaminant, or toxic or hazardous substance under any Environmental Law,
including without limitation, any hazardous substance within the meaning of
SECTION 101(14) of CERCLA, (b) petroleum, oil, gasoline, natural gas, fuel oil,
motor oil, waste oil, diesel fuel, jet fuel, and other petroleum hydrocarbons,
(c) regulated asbestos and asbestos-containing materials in any form, (d)
polychlorinated biphenyls, or (e) urea formaldehyde foam.

         ILEC means an incumbent local exchange carrier.

         INTEREST COVERAGE RATIO means, on any date of determination, calculated
for the fiscal quarter then most recently ended, the ratio of (a) the SUM of the
Operating Cash Flow for the CLEC Business PLUS the Operating Cash Flow of the
Fiber Business PLUS the Operating Cash Flow of Dobson Telephone and its
Subsidiaries to (b) the SUM (without duplication) of the Interest Expense for
the CLEC Business PLUS the Interest Expense of the Fiber Business PLUS the
Interest Expense of Dobson Telephone and its Subsidiaries MINUS the amount of
cash interest paid on the Senior Notes during such fiscal quarter to the extent
such interest payments were made with proceeds of the Pledged Government
Securities.

                                       12

<PAGE>

         INTEREST EXPENSE, calculated at any date of determination with respect
to the most recently ended Rolling Period (unless otherwise indicated), means
for any Person or line of business, the aggregate amount of all interest
(including commitment fees) on all Debt of such Person, whether paid in cash or
accrued as a liability and payable in cash during such period (including,
without limitation, imputed interest on Capital Lease obligations; the
amortization of any original issue discount on any Debt; the interest portion of
any deferred payment obligation; all commissions, discounts, and other fees and
charges owed with respect to letters of credit or bankers' acceptance financing;
net costs associated with Financial Hedges; the interest component of any Debt
that is guaranteed or secured by such Person), and all cash premiums or
penalties for the repayment, redemption, or repurchase of Debt.

         INTEREST PERIOD is determined in accordance with SECTION 3.10.

         LAWS means all applicable statutes, laws, treaties, ordinances, tariff
requirements, rules, regulations, orders, writs, injunctions, decrees,
judgments, opinions, or interpretations of any Governmental Authority.

         LC means any standby letter of credit issued hereunder by
Administrative Agent pursuant to an LC Agreement.

         LC AGREEMENT means a letter of credit application and agreement (in
form and substance satisfactory to Administrative Agent) submitted by Borrower
to Administrative Agent for an LC for its own account (and for its benefit or
the benefit of any other Company); PROVIDED THAT this Agreement shall control
any conflict between this Agreement and any such LC Agreement.

         LC EXPOSURE means, at any time and WITHOUT DUPLICATION, the SUM of (a)
the aggregate undrawn portion of all uncancelled and unexpired LCs PLUS (b) the
aggregate unpaid reimbursement obligations of Borrower in respect of drawings of
drafts under any LC.

         LC SUBFACILITY means a subfacility for the issuance of LCs (the LC
Exposure in connection with which may never exceed $5,000,000), as described in
and subject to the limitations of SECTION 2.2.

         LENDERS means, on any date of determination, the financial institutions
named on SCHEDULE 2.1 (as the same may be amended from time to time by
Administrative Agent to reflect the assignments made in accordance with SECTION
13.13(b)), and subject to the terms and conditions of this Agreement, and their
respective successors and assigns (but not any Participant who is not otherwise
a party to this Agreement); PROVIDED THAT, solely for purposes of the Collateral
Documents and SECTIONS 12, 3.13, and 3.14, "LENDERS" shall also include any
Lender or Affiliate of a Lender who is party to a Financial Hedge with Borrower
and their respective successors and assigns (for purposes hereof, each Lender
shall be deemed to have entered into this Agreement for and on behalf of any
Affiliate now or hereafter party to a Financial Hedge with Borrower).

         LIEN means any lien, mortgage, security interest, pledge, assignment,
charge, title retention agreement, or encumbrance of any kind, and any other
Right of or arrangement with any creditor (OTHER THAN under or relating to
subordination or other intercreditor arrangements) to have its claim satisfied
out of any property or assets, or the proceeds therefrom, prior to the general
creditors of the owner thereof.

         LITIGATION means any action by or before any Governmental Authority.

         LOAN PAPERS means (a) this Agreement, the Notes, the Collateral
Documents, LCs, the Capital Contribution Agreement, and LC Agreements, (b) all
agreements, documents, or instruments in favor of

                                       13

<PAGE>

Agents or Lenders ever delivered pursuant to this Agreement or otherwise
delivered in connection with all or any part of the Obligation, and (c) all
future renewals, extensions, restatements, reaffirmations, or amendments of,
or supplements to, all or any part of the foregoing.

         LOAN PARTIES means Parent, the Companies, and all other Guarantors
(OTHER THAN DCCLP).

         LOGIX means Logix Communications Corporation, an Oklahoma corporation,
(i) formerly known as Dobson Wireless, Inc., the successor by merger with the
former Logix Communications Corporation, and (ii) successor by statutory merger
with American Telco, Inc., American Telco Network Services, Inc., Dobson Fiber
Company, and Dobson Network Management, Inc.

         LOGIX GROUP means, at any date of determination thereof, Logix and each
of its Subsidiaries.

         MATERIAL ADVERSE EVENT means any set of one or more circumstances or
events which, individually or collectively, could reasonably be expected to
result in any (a) material impairment of the ability of any Loan Party (or, if
prior to the Second Capital Date, DCCLP) to perform any of their respective
payment or other material obligations under the Loan Papers or the ability of
Administrative Agent or any Lender to enforce any such obligations or any of
their respective Rights under the Loan Papers, (b) material and adverse effect
on the business, properties, condition (financial or otherwise), or results of
operations of any Loan Party (or, if prior to the Second Capital Date, DCCLP),
either singly or in the aggregate, or (c) Default or Potential Default.

         MATERIAL AGREEMENT means any contract material to the respective
business of any Loan Party (including with respect to any telecommunications
systems thereof).

         MAXIMUM AMOUNT and MAXIMUM RATE respectively mean, for each Lender, the
maximum non-usurious amount and the maximum non-usurious rate of interest which,
under applicable Law, such Lender is permitted to contract for, charge, take,
reserve, or receive on the Obligation.

         MAXIMUM AVAILABILITY means, at any date of determination, the amount
shown in the table below that corresponds with the applicable date of
determination:

<TABLE>
<CAPTION>

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

            DATE OF DETERMINATION                        MAXIMUM AMOUNT
<S>                                            <C>
---------------------------------------------- -----------------------------------
On the Closing Date to and including 09/30/99             $37,000,000
---------------------------------------------- -----------------------------------
        On 10/01/99 to and including                      $42,500,000
                  10/31/99
---------------------------------------------- -----------------------------------
         On 11/01/99 and thereafter                       $50,000,000
---------------------------------------------- -----------------------------------

</TABLE>

         MULTIEMPLOYER PLAN means a multiemployer plan as defined in SECTIONS
3(37) or 4001(a)(3) of ERISA or SECTION 414(f) of the Code to which any Loan
Party or any ERISA Affiliate is making, or has made, or is accruing, or has
accrued, an obligation to make contributions.

         NET CASH PROCEEDS means (a) with respect to any Significant Sale, cash
(freely convertible into Dollars) received, on or after the date of consummation
of such Significant Sale, by any Company from such Significant Sale, after (i)
deduction of Assumed Taxes, (ii) payment of all usual and customary brokerage

                                       14

<PAGE>

commissions and all other reasonable fees and expenses related to such
Significant Sale (including, without limitation, reasonable attorneys' fees and
closing costs incurred in connection with such Significant Sale), (iii)
deduction of appropriate amounts to be provided by Borrower or any Company as a
reserve, in accordance with GAAP, against any liabilities retained by any
Company after such Significant Sale, which liabilities are associated with the
asset or assets being sold, including, without limitation, pension and other
post-employment benefit liabilities and liabilities related to environmental
matters or against any indemnification obligations associated with such
Significant Sale, and (iv) deduction for the amount of any Debt (OTHER THAN the
Obligation) secured by the respective asset or assets being sold, which Debt is
required to be repaid as a result of such Significant Sale; (b) with respect to
any incurrence of Debt, cash (freely convertible in to Dollars) received, on or
after the date of incurrence of such Debt, by any Company from the incurrence of
such Debt after (i) payment of all reasonable attorneys' fees and usual and
customary underwriting commissions, closing costs, and other reasonable expenses
associated with such incurrence of Debt, (ii) deduction of all deposits, escrow
amounts, or other reserves required to be maintained by any Company in
connection with such Debt, and (iii) deductions for the amount of any other Debt
(OTHER THAN the Obligation) which is required to be repaid concurrently with or
otherwise as a result of the incurrence of such Debt; and (c) with respect to
any Equity Issuance, cash (freely convertible into Dollars) (including any cash
received by way of deferred payment pursuant to a promissory note, or otherwise,
but only as and when received) received, on or after the date of such Equity
Issuance, by Borrower from such Equity Issuance, net of usual and customary
transaction costs and expenses and Assumed Taxes.

         NOTE means a promissory note in substantially the form of EXHIBIT A,
and all renewals and extensions of all or any part thereof.

         NOTICE OF BORROWING is defined in SECTION 2.4(a).

         NOTICE OF CONVERSION is defined in SECTION 3.11.

         NOTICE OF LC is defined in SECTION 2.2(a).

         OBLIGATION means all present and future indebtedness, liabilities, and
obligations, and all renewals and extensions thereof, or any part thereof, now
or hereafter owed to Administrative Agent, any other Agent, any Lender, or any
Affiliate of any Lender by any Company arising from, by virtue of, or pursuant
to any Loan Paper, TOGETHER WITH all interest accruing thereon, fees, costs, and
expenses (including, without limitation, all attorneys' fees and expenses
incurred in the enforcement or collection thereof) payable under the Loan
Papers.

         OPERATING CASH FLOW means, for any Person or line of business, as
calculated at any date of determination with respect to the most recently ended
Rolling Period (unless otherwise indicated), the SUM (without duplication and
without giving effect to any extraordinary losses or gains during such period)
of (a) net income or deficit during such period, PLUS (b) to the extent already
deducted in computing such net income (i) income Tax expense, (ii) Interest
Expense during such period, and (iii) depreciation, amortization, and other
non-cash-expense items during such period, LESS (c) interest and dividend
income, LESS (d) other non-cash components of income, adjusted as required to
take into account any minority ownership interest. The provision for income
taxes and reductions in deferred taxes shall be adjusted in accordance with the
Tax Sharing Agreement (to the extent the Tax Sharing Agreement applies). In
determining Operating Cash Flow for any Person such amount shall be calculated
after giving effect to Acquisitions and divestitures of such Person (to the
extent permitted by the Loan Papers in the case of the Companies) during such
period as if such transactions had occurred on the first day of such period,
regardless of whether the effect is positive or negative.

                                       15

<PAGE>

         OTHER TAXES is defined in 4.6(b).

         PARENT means Logix Communications Enterprises, Inc., an Oklahoma
corporation, formerly known as Dobson Wireline Company, and a Wholly-owned
Subsidiary of Dobson Operating Company, an Oklahoma corporation and a
Wholly-owned Subsidiary of Communications.

         PARTICIPANT is defined in SECTION 13.13(e).

         PBGC means the Pension Benefit Guaranty Corporation, or any successor
thereof, established pursuant to ERISA.

         PERMITTED ACQUISITION means:

                  (a) An Acquisition by Logix or any Subsidiary of Logix of
         businesses which are engaged in the Telecommunications Business, with
         respect to which each of the following requirements shall have been
         satisfied:

                           (i)      the Acquisition occurs after the last day of
                  the Qualifying Period;

                           (ii) the purchase price for such Acquisition must be
                  less than or equal to $1,000,000 and when aggregated with the
                  purchase price of each other Acquisition consummated after the
                  Closing Date, may not exceed $10,000,000 in the aggregate;

                           (iii) as of the closing of any Acquisition, the
                  Acquisition has been approved and recommended by the board of
                  directors of the Person to be acquired or from which such
                  business is to be acquired;

                           (iv)     the Acquisition shall be made on terms and
                  conditions satisfactory to Agents;

                           (v) not less than 30 Business Days prior to the
                  closing of any Acquisition, Logix shall have delivered to
                  Administrative Agent a Permitted Acquisition Compliance
                  Certificate, demonstrating pro forma compliance with the terms
                  and conditions of the Loan Papers, after giving effect to the
                  Acquisition, including (A) a pro forma income and balance
                  sheet for the Companies (after giving effect to the
                  Acquisition); (B) three year cash flow projections for the
                  Companies (after giving effect to the Acquisition),
                  demonstrating compliance with the Companies' applicable
                  financial covenants and debt amortization schedules; (C) to
                  the extent available, audited financial statements for the
                  acquired assets or entity and its business for the three
                  fiscal years immediately preceding the date of such
                  Acquisition; (D) a description of the acquired assets or
                  entity and its business; and (E) such other information
                  regarding the Acquisition as Lenders may reasonably request;

                           (vi) the financial condition of the entity or assets
                  to be acquired must be satisfactory to Agents, including,
                  without limitation, evidence that the projected Operating Cash
                  Flow (attributable to the assets or entity being acquired
                  pursuant to such Acquisition) for the 12 month period
                  following such Acquisition will be greater than NEGATIVE
                  $100,000;

                                       16

<PAGE>

                           (vii) each Authorization issued by the FCC or any PUC
                  to be acquired by any Company shall be valid, binding,
                  enforceable, and subsisting without any defaults thereunder or
                  enforceable adverse limitations thereon and shall not be
                  subject to any proceedings or claims opposing the issuance,
                  development, or use thereof or contesting the validity
                  thereof, UNLESS such Company has entered into an agreement
                  with the seller of such Authorization protecting such Company
                  from such adverse limitations, proceedings, or claims, which
                  agreement shall be on terms and conditions satisfactory to
                  Agents;

                           (viii) prior to consummation of any Acquisition,
                  Logix shall have satisfied the conditions precedent set forth
                  in SECTION 7.2;

                           (ix) as of the closing of any Acquisition, after
                  giving effect to such Acquisition, the acquiring party must be
                  Solvent and the Logix Group, on a consolidated basis, must be
                  Solvent;

                           (x) as of the closing of any Acquisition, no Default
                  or Potential Default shall exist or occur as a result of, and
                  after giving effect to, such Acquisition; and

                           (xi) as of the closing of any Acquisition, (A) if
                  such Acquisition is structured as a merger, Logix, (or if such
                  merger is with any Subsidiary of Logix, then such Subsidiary)
                  must be the surviving entity after giving effect to such
                  merger; and (B) if such Acquisition is structured as a
                  stock/equity acquisition, the acquiring Company shall own not
                  less than a 100% interest in the entity being acquired; or

                  (b) any other Acquisition for which the prior written consent
         of Required Lenders has been obtained.

         PERMITTED ACQUISITION COMPLIANCE CERTIFICATE means a certificate signed
by a Responsible Officer of Borrower, substantially in the form of EXHIBIT E-2.

         PERMITTED ACQUISITION LOAN CLOSING CERTIFICATE means a certificate
signed by a Responsible Officer of Borrower, substantially in the form of
EXHIBIT E-3.

         PERMITTED DEBT means Debt permitted under SECTION 9.12 as described in
such Section.

         PERMITTED LIENS means Liens permitted under SECTION 9.13 as described
in such Section.

         PERSON means any individual, entity, or Governmental Authority.

         PHASE I LEVERAGE RATIO means, on any determination the ratio of (a) the
SUM (without duplication) of (i) the Debt of the Companies (calculated on a
consolidated basis) PLUS (ii) the Debt of Dobson Telephone and its Subsidiaries
to (b) the SUM of the Operating Cash Flow of the Fiber Business PLUS the
Operating Cash Flow of Dobson Telephone and its Subsidiaries; PROVIDED THAT, if
the Obligation is prepaid pursuant to SECTION 3.3(a)(ii) from Capital
Contributions made under the Capital Contribution Agreement during the period
after the end of the applicable period of determination but prior to the date
Borrower is required to deliver Financial Statements pursuant to SECTION 9.3(b)
for such period of determination, then in determining the Phase I Leverage
Ratio, the calculation of the Debt of the Companies may be reduced by the amount
of such prepayment of the Obligation.

                                       17

<PAGE>

         PHASE II COMMENCEMENT DATE means a date which is the EARLIER of either
(a) the first day of the fiscal quarter immediately following the Qualifying
Period or (b) July 1, 2001.

         PHASE II LEVERAGE RATIO means, on any date of determination, the ratio
of (a) the SUM (without duplication) of the Debt of the Companies (calculated on
a consolidated basis) PLUS the Debt of Dobson Telephone and its Subsidiaries to
(b) the SUM of the CLEC Operating Cash Flow PLUS the Operating Cash Flow of the
Fiber Business PLUS the Operating Cash Flow of Dobson Telephone and its
Subsidiaries.

         PHASE II NOTICE DATE means the second Business Day after Borrower
delivers to Administrative Agent the Compliance Certificates (and related
Financial Statements) demonstrating to Administrative Agent's satisfaction
compliance with the Phase II Leverage Ratio for each of the fiscal quarters in
the Qualifying Period.

         PLEDGED GOVERNMENT SECURITIES means the portfolio of United States
government securities that were purchased with proceeds of the Senior Notes and
which are pledged as security for the first six interest payments on the Senior
Notes.

         POTENTIAL DEFAULT means the occurrence of any event or existence of any
circumstance which, with the giving of notice or lapse of time or both, would
become a Default.

         PRIME RATE means the per annum rate of interest established from time
to time by Bank of America, N.A., as its prime rate, which rate may not be the
lowest rate of interest charged by Bank of America, N.A. to its customers.

         PRINCIPAL DEBT means, on any date of determination, the aggregate
unpaid principal balance of all Borrowings, TOGETHER WITH the aggregate unpaid
reimbursement obligations of Borrower in respect of drawings of drafts under any
LC.

         PRO RATA or PRO RATA PART, for each Lender on any date of
determination, means (a) for purposes of any commitment to fund any Borrowing or
to purchase participations pursuant to SECTION 2.2 in respect of the LC
Subfacility, such Lender's Applicable Percentage then in effect, (b) for
purposes of sharing any amount or fee payable to any Lender, the proportion
which the portion of the Principal Debt owed to such Lender (whether held
directly or through a participation in respect of the LC Subfacility and
determined after giving effect thereto) bears to the Principal Debt then
outstanding, and (c) for all other purposes, the proportion which the portion of
the Obligation owed to such Lender bears to the Obligation owed to all Lenders
at the time in question, or if no Obligation is outstanding, then the proportion
that such Lender's Committed Sum bears to the Commitment then in effect.

         PUBLIC MARKET is defined in SECTION 10.7.

         PUC means any state or local regulatory agency or Governmental
Authority that exercises jurisdiction over the rates or services or the
ownership, construction, or operation of network facilities or
telecommunications systems or over Persons who own, construct, or operate
network facilities or telecommunications systems.

         QUALIFYING PERIOD means the first two consecutive fiscal quarters
occurring after the Closing Date but prior to July 1, 2001, with respect to
which Borrower has delivered Compliance Certificates and related Financial
Statements (in form and substance satisfactory to Administrative Agent)
demonstrating positive

                                       18

<PAGE>

Operating Cash Flow for the CLEC Business calculated with respect to such two
consecutive fiscal quarters and for which period no Default or Potential
Default exists or arises.

         REGISTER is defined in SECTION 13.13(c).

         REGULATION D means Regulation D of the Board of Governors of the
Federal Reserve System, as amended.

         REGULATION U means Regulation U of the Board of Governors of the
Federal Reserve System, as amended.

         RELEASE means any spilling, leaking, pumping, pouring, emitting,
emptying, discharging, injecting, escaping, leaching, dumping, disposal,
deposit, dispersal, migrating, or other movement into the air, ground, or
surface water, or soil.

         REPORTABLE EVENT shall have the meaning specified in SECTION 4043 of
ERISA or the regulations issued thereunder in connection with an Employee Plan,
excluding events for which the notice requirement is waived under applicable
PBGC regulations OTHER THAN those events described in SECTIONS 4043.21, 4043.24
and 4043.28 of such regulations, including each such provision as it may
subsequently be renumbered.

         REPORTED PERIOD is defined in SECTION 8.28.

         REPRESENTATIVES means representatives, officers, directors, employees,
attorneys, and agents.

         REQUIRED LENDERS means (a) on any date of determination PRIOR TO the
Termination Date, (i) if there are three or fewer Lenders under the Loan Papers
on any such date of determination, all Lenders; (ii) if there are only four
Lenders under the Loan Papers on any such date of determination, those Lenders
holding 51% or more of the Commitment then in effect, BUT NOT LESS THAN three
Lenders; (iii) if there are only five Lenders under the Loan Papers on any such
date of determination, those Lenders holding 66 2/3% or more of the Commitment
then in effect; or (iv) if there are six or more Lenders under the Loan Papers
on any such date of determination, those Lenders holding 51% or more of the
Commitment then in effect; and (b) on any date of determination ON OR AFTER the
Termination Date; (i) if there are three or fewer Lenders under the Loan Papers
on any such date of determination, all Lenders; (ii) if there are only four
Lenders under the Loan Papers on any such date of determination, those Lenders
holding 51% or more of the Principal Debt, BUT NOT LESS THAN three Lenders;
(iii) if there are only five Lenders under the Loan Papers on any such date of
determination, those Lenders holding 66 2/3% or more of the Principal Debt; or
(iv) if there are six or more Lenders on any such date of determination, those
Lenders holding 51% or more of the Principal Debt.

         RESERVE REQUIREMENT means, at any time, the maximum rate at which
reserves (including, without limitation, any marginal, special, supplemental, or
emergency reserves) are required to be maintained under regulations issued from
time to time by the Board of Governors of the Federal Reserve System (or any
successor) by member banks of the Federal Reserve System against, in the case of
Eurodollar Rate Borrowings, "EUROCURRENCY LIABILITIES" (as such term is used in
Regulation D). Without limiting the effect of the foregoing, the Reserve
Requirement shall reflect any other reserves required to be maintained by such
member banks with respect to (a) any category of liabilities which includes
deposits by reference to which the Adjusted Eurodollar Rate is to be determined,
or (b) any category of extensions of credit or other assets which include
Eurodollar Rate Borrowings. The Adjusted Eurodollar Rate shall be adjusted
automatically on and as of the effective date of any change in the Reserve
Requirement.

                                       19

<PAGE>

         RESPONSIBLE OFFICER means the chairman, president, chief executive
officer, chief financial officer, or treasurer of a Person, or, for all purposes
under the Loan Papers, any other officer designated from time to time by the
Board of Directors of such Person, which designated officer is acceptable to
Administrative Agent.

         RIGHTS means rights, remedies, powers, privileges, and benefits.

         ROLLING PERIOD means, at any date of determination, (a) occurring on or
after the Closing Date until (but not including) the Phase II Commencement Date,
the most recently-ended twelve calendar months and (b) occurring on and after
the Phase II Commencement Date, the most recent four fiscal quarters ended on
March 31, June 30, September 30, or December 31 (as the case may be).

         RUS/RTB DEBT means all Debt owed by Dobson Telephone or by its
predecessor McLoud Telephone Company to the United States of America (acting
through the Administrator of the Rural Utilities Services or its predecessor,
the Rural Electrification Administration), and the Rural Telephone Bank,
including without limitation, that Debt evidenced by that certain Telephone Loan
Contract dated November 7, 1958, among Dobson Telephone, the United States of
America, and the Rural Telephone Bank, and that certain Telephone Loan Contract
dated March 19, 1956, between McLoud Telephone Company and the United States of
America and all other agreements evidencing or securing such Debt (each as
amended, restated, supplemented, or modified, including without limitation, by
that certain Amending Telephone Loan Contract dated as of August 13, 1998).

         SCHEDULE means, UNLESS specified otherwise, a schedule attached to this
Agreement, as the same may be supplemented and modified from time to time in
accordance with the terms of the Loan Papers.

         SECOND CAPITAL DATE means the date upon which: (a) Borrower has
received one or more Capital Contributions after the Closing Date in an
aggregate amount of not less than $100,000,000 (inclusive of all Capital
Contributions made on or prior to the First Capital Date) from sources OTHER
THAN pursuant to the Capital Contribution Agreement (which Capital Contributions
shall be in form and substance, and from sources, acceptable to Required Lenders
in their sole discretion), (b) no Default or Potential Default then exists or
arises, (c) all mandatory prepayments required pursuant to SECTION 3.3(a)(ii)
have been paid, and (d) Borrower can demonstrate compliance with the applicable
Phase I Leverage Ratio after giving effect to such Capital Contribution and
related mandatory prepayments.

         SECURITIES ACT is defined in SECTION 10.7.

         SECURITY AGREEMENT means, individually, and SECURITY AGREEMENTS means,
collectively, (a) the Pledge, Assignment, and Security Agreement of each
Company, substantially in the form and upon the terms of EXHIBIT D-1, executed
and delivered by any Person pursuant to the requirements of the Loan Papers; (b)
the Pledge, Assignment, and Security Agreement of Parent, substantially in the
form and upon the terms of EXHIBIT D-2, executed and delivered by Parent
pursuant to the requirements of the Loan Papers; and (c) any amendments,
modifications, supplements, ratifications, or restatements of any Security
Agreement made in accordance with the Loan Papers.

         SENIOR NOTES means the 12 1/4% Senior Notes due 2008, issued by Parent
pursuant to an Indenture dated as of June 12, 1998, between Parent's predecessor
in interest Dobson Wireline, Inc., as issuer, and United States Trust Company of
New York, as trustee.

                                       20

<PAGE>

         SIGNIFICANT SALE means any sale, lease, transfer, or other
disposition of any property or assets (tangible or intangible) by any Company
to any other Person (OTHER THAN any sale, lease, transfer, or other
disposition contemplated by SECTIONS 9.23(a) through (f)) with respect to
which the Net Cash Proceeds realized by the Companies for such asset
disposition (or when aggregated with the Net Cash Proceeds from all such
other asset dispositions occurring in the same calendar year) equals or
exceeds $100,000.

         SOLVENT means, as to a Person, that (a) the aggregate fair market
value of such Person's assets exceeds its liabilities (whether contingent,
subordinated, unmatured, unliquidated, or otherwise), (b) such Person has
sufficient cash flow to enable it to pay its Debts as they mature, and (c)
such Person does not have unreasonably small capital to conduct such Person's
businesses.

         SUBJECT MONTH is defined in SECTION 9.3(k).

         SUBSIDIARY of any Person means (a) any entity of which an aggregate
of more than 50% (in number of votes) of the stock is owned of record or
beneficially, directly or indirectly, by such Person, or (b) any partnership
(limited or general) of which such Person shall at any time be the general
partner or own 50% or more of the issued and outstanding partnership
interests.

         SYNDICATION AGENT means CIBC World Markets Corp. and its permitted
successors or assigns as "SYNDICATION AGENT" under this Agreement.

         TAX SHARING AGREEMENT means that certain consolidated income tax
payment agreement dated February 28, 1997, entered into between
Communications and its Subsidiaries.

         TAXES means, for any Person, taxes, assessments, or other
governmental charges or levies imposed upon such Person, its income, or any
of its properties, franchises, or assets.

         TELECOMMUNICATIONS ASSETS means all assets, rights (contractual or
otherwise), and properties, whether tangible or intangible, used in
connection with a Telecommunications Business.

         TELECOMMUNICATIONS BUSINESS means the business of (a) transmitting
or providing services related to the transmission of voice, video, or data
through owned or leased transmission facilities; (b) creating, developing, or
marketing communications related network equipment, software, and other
services for use in a Telecommunications Business; or (c) evaluating,
participating, or pursuing any other activity or opportunity that is related
to those identified in CLAUSES (a) or (b) above; PROVIDED THAT, the
determination of what constitutes a Telecommunications Business shall be made
in good faith by the Board of Directors of the Company.

         TERMINATION DATE means the EARLIER of either (a) June 30, 2005, or
(b) the effective date of any other termination, cancellation, or
acceleration of Lenders' commitments to lend under, and in accordance with,
this Agreement.

         TYPE means any type of Borrowing determined with respect to the
interest option applicable thereto.

         UNRESTRICTED CASH means, solely with respect to the Logix Group, on
any date of determination, the aggregate Dollar amount of all
immediately-available cash owned by such Person, which cash is not subject to
any Liens or claims of third Persons and is unconditionally available for
payment of the Obligation.

                                      21
<PAGE>

         VOTING STOCK means securities (as such term is defined in SECTION
2(1) of the Securities Act of 1933, as amended) of any class or classes, the
holders of which are ordinarily, in the absence of contingencies, entitled to
elect a majority of the corporate directors (or Persons performing similar
functions).

         WHOLLY-OWNED when used in connection with any Subsidiary shall mean
a Subsidiary of which all of the issued and outstanding shares of stock
(EXCEPT shares required as directors' qualifying shares) shall be owned by
Borrower or one or more of its Wholly-owned Subsidiaries.

         WORKING CAPITAL means the SUM of all current assets OTHER THAN cash,
LESS the SUM of all current liabilities OTHER THAN the current portion of
long term Debt, all as determined in accordance with GAAP.

         1.2 NUMBER AND GENDER OF WORDS; OTHER REFERENCES. UNLESS otherwise
specified in the Loan Papers, (a) where appropriate, the singular includes
the plural and VICE VERSA, and words of any gender include each other gender,
(b) heading and caption references may not be construed in interpreting
provisions, (c) monetary references are to currency of the United States of
America, (d) section, paragraph, annex, schedule, exhibit, and similar
references are to the particular Loan Paper in which they are used, (e)
references to "TELECOPY," "FACSIMILE," "FAX," or similar terms are to
facsimile or telecopy transmissions, (f) references to "INCLUDING" mean
including without limiting the generality of any description preceding that
word, (g) the rule of construction that references to general items that
follow references to specific items are limited to the same type or character
of those specific items is not applicable in the Loan Papers, (h) references
to any Person include that Person's heirs, personal representatives,
successors, trustees, receivers, and permitted assigns, (i) references to any
Law include every amendment or supplement to it, rule and regulation adopted
under it, and successor or replacement for it, and (j) references to any Loan
Paper or other document include every renewal and extension of it, amendment
and supplement to it, and replacement or substitution for it.

         1.3 ACCOUNTING PRINCIPLES. All accounting and financial terms used
in the Loan Papers and the compliance with each financial covenant therein
shall be determined in accordance with GAAP, and, all accounting principles
shall be applied on a consistent basis so that the accounting principles in a
current period are comparable in all material respects to those applied
during the preceding comparable period. If Borrower or any Lender determines
that a change in GAAP from that in effect on the date hereof has altered the
treatment of certain financial data to its detriment under this Agreement,
such party may, by written notice to the others and Administrative Agent not
later than ten days after the effective date of such change in GAAP, request
renegotiation of the financial covenants affected by such change. If Borrower
and Required Lenders have not agreed on revised covenants within 30 days
after delivery of such notice, then, for purposes of this Agreement, GAAP
will mean generally accepted accounting principles on the date just prior to
the date on which the change that gave rise to the renegotiation occurred.

SECTION 2 BORROWING PROVISIONS.

         2.1 COMMITMENTS. Subject to and in reliance upon the terms,
conditions, representations, and warranties in the Loan Papers, each Lender
severally and not jointly agrees to lend to Borrower such Lender's Pro Rata
Part of one or more Borrowings not to exceed such Lender's Committed Sum,
which may be repaid and reborrowed from time to time in accordance with the
terms and provisions of the Loan Papers; PROVIDED THAT, (a) each such
Borrowing must occur on a Business Day and no later than the Business Day
immediately preceding the Termination Date; (b) prior to the Second Capital
Date, only one Borrowing may be made in any calendar week; (c) each such
Borrowing shall be in an amount not less than $2,000,000 or a greater
integral multiple of $500,000; (d) on any date of determination, the
Commitment Usage shall never exceed

                                      22
<PAGE>

the Available Commitment then in effect; and (e) no Default or Potential
Default exists or arises as a result of such Borrowing.

         2.2 LC SUBFACILITY.

             (a Subject to the terms and conditions of this Agreement and
         applicable Law, Administrative Agent agrees to issue LCs upon
         Borrower's application therefor (denominated in Dollars) by
         delivering to Administrative Agent a properly completed notice (a
         "NOTICE OF LC," substantially in the form of EXHIBIT B-3) and an LC
         Agreement with respect thereto no later than 10:00 a.m. Dallas,
         Texas time three Business Days before such LC is to be issued;
         PROVIDED THAT, (i) on any date of determination and after giving
         effect to any LC to be issued on such date, the Commitment Usage
         shall never exceed the Available Commitment then in effect, (ii) on
         any date of determination and after giving effect to any LC to be
         issued on such date, the LC Exposure shall never exceed $5,000,000,
         (iii) at the time of issuance of such LC, no Default or Potential
         Default shall have occurred and be continuing, and (iv) each LC must
         expire NO LATER than the EARLIER of the 30th day prior to the
         Termination Date or one year from its issuance; PROVIDED THAT, any
         LC may provide for automatic renewal for successive twelve month
         periods (but no renewal period may extend beyond the 30th day prior
         to the Termination Date) unless Administrative Agent has given prior
         notice to the applicable beneficiary of its election not to extend
         such LC.

             (b Immediately upon the issuance by Administrative Agent of any
         LC, Administrative Agent shall be deemed to have sold and
         transferred to each other Lender, and each other such Lender shall
         be deemed irrevocably and unconditionally to have purchased and
         received from Administrative Agent, without recourse or warranty, an
         undivided interest and participation, to the extent of such Lender's
         Pro Rata Part, in such LC, and all Rights of Administrative Agent in
         respect thereof (OTHER THAN Rights to receive certain fees provided
         for in SECTION 2.2(c)). Upon the issuance, renewal, or extension of
         an LC, Administrative Agent shall provide copies of such LC to each
         other Lender.

             (c In order to induce Administrative Agent to issue and maintain
         LCs and Lenders to participate therein, Borrower agrees to pay or
         reimburse Administrative Agent (i) on the date on which any draft is
         presented under any LC, the amount of any draft paid or to be paid
         by Administrative Agent and (ii) promptly, upon demand, the amount
         of any fees (in addition to the fees described in SECTION 5) which
         Administrative Agent customarily charges to a Person similarly
         situated in the ordinary course of its business for amending LC
         Agreements, for honoring drafts, and taking similar action in
         connection with letters of credit; PROVIDED THAT, (x) if Borrower
         has not reimbursed Administrative Agent for any drafts paid or to be
         paid within 24 hours of demand therefor by Administrative Agent,
         Administrative Agent is hereby irrevocably authorized to fund such
         reimbursement obligations as a Borrowing to the extent of
         availability, and the proceeds of such Borrowing shall be advanced
         directly to Administrative Agent in payment of Borrower's
         reimbursement obligation with respect to the draft under the LC; and
         (y) if for any reason, funds are not advanced, then Borrower's
         reimbursement obligation shall continue to be due and payable.
         Borrower's obligations under this SECTION 2.2(c) shall be absolute
         and unconditional under any and all circumstances and irrespective
         of any setoff, counterclaim, or defense to payment which Borrower
         may have at any time against Administrative Agent or any other
         Person, and shall be made in accordance with the terms and
         conditions of this Agreement under all circumstances, including,
         without limitation, any of the following circumstances: (A) any lack
         of validity or enforceability of this Agreement or any of the Loan
         Papers; (B) the existence of any claim, setoff, defense, or other
         Right which Borrower may have at any time against a beneficiary
         named in a LC, any transferee of

                                       23

<PAGE>

         any LC (or any Person for whom any such transferee may be acting),
         Administrative Agent, any Lender, or any other Person, whether in
         connection with this Agreement, any LC, the transactions
         contemplated herein, or any unrelated transactions (including any
         underlying transaction between Borrower and the beneficiary named in
         any such LC); (C) any draft, certificate, or any other document
         presented under the LC proving to be forged, fraudulent, invalid, or
         insufficient in any respect or any statement therein being untrue or
         inaccurate in any respect; and (D) the occurrence of any Potential
         Default or Default. To the extent any funding of a draft has been
         made by Lenders pursuant to SECTION 2.2(e) or otherwise under this
         Agreement, Administrative Agent shall promptly distribute any such
         payments received from Borrower with respect to such draft to all
         Lenders funding such draft according to their ratable share.
         Interest on any amounts remaining unpaid by Borrower (and unfunded
         by a Borrowing) under this clause at any time from and after the
         date such amounts become payable until paid in full shall be payable
         by Borrower to Administrative Agent at the Default Rate. In the
         event any payment by Borrower received by Administrative Agent with
         respect to an LC and distributed to Lenders on account of their
         participations therein is thereafter set aside, avoided, or
         recovered from Administrative Agent in connection with any
         receivership, liquidation, or bankruptcy proceeding, each Lender
         which received such distribution shall, upon demand by
         Administrative Agent, contribute such Lender's ratable portion of
         the amount set aside, avoided, or recovered, TOGETHER WITH interest
         at the rate required to be paid by Administrative Agent upon the
         amount required to be repaid by it.

             (d If any draft shall be presented for honor under any LC,
         Administrative Agent shall promptly notify Borrower of the date and
         amount of such draft; PROVIDED THAT, failure to give any such notice
         shall not affect the obligations of Borrower hereunder. Administrative
         Agent shall make payment upon presentment of a draft for honor unless
         it appears that presentment on its face does not comply with the terms
         of such LC, regardless of whether (i) any default or potential default
         under any other agreement has occurred and (ii) the obligations under
         any other agreement have been performed by the beneficiary or any other
         Person (and Administrative Agent shall not be liable for any obligation
         of any Person thereunder). Administrative Agent and Lenders shall not
         be responsible for, and Borrower's reimbursement obligations for
         honored drafts shall not be affected by, any matter or event whatsoever
         (including, without limitation, the validity or genuineness of
         documents or of any endorsements thereof, even if such documents should
         in fact prove to be in any respect invalid, fraudulent, or forged), or
         any dispute among any Company, the beneficiary of any LC, or any other
         Person to whom any LC may be transferred, or any claims whatsoever of
         any Company against any beneficiary of any LC or any such transferee;
         PROVIDED THAT, nothing in this Agreement shall constitute a waiver of
         Borrower's Rights to assert any claim based upon the gross negligence
         or wilful misconduct of Administrative Agent or any Lender.

             (e If Borrower fails to reimburse Administrative Agent as
         provided in SECTION 2.2(c) within 24 hours of the demand therefor by
         Administrative Agent, Administrative Agent shall promptly notify each
         Lender of such failure, of the date and amount of the draft paid, and
         of such Lender's Pro Rata Part thereof. Each Lender shall promptly and
         unconditionally make available to Administrative Agent in immediately
         available funds such Lender's Pro Rata Part of such unpaid
         reimbursement obligation, which funds shall be paid to Administrative
         Agent on or before the close of business on the Business Day on which
         such notice was given by Administrative Agent (if given prior to 1:00
         p.m., Dallas, Texas time) or on the next succeeding Business Day (if
         notice was given after 1:00 p.m., Dallas, Texas time). All such amounts
         payable by any such Lender shall include interest thereon accruing at
         the Federal Funds Rate from the day the applicable draft is paid by
         Administrative Agent to (but not including) the date such amount is
         paid by such Lender to Administrative Agent. The obligations of Lenders
         to make payments to Administrative Agent with

                                      24
<PAGE>

         respect to LCs shall be irrevocable and not subject to any
         qualification or exception whatsoever (OTHER THAN the gross
         negligence or wilful misconduct of Administrative Agent) and shall
         be made in accordance with the terms and conditions of this
         Agreement under all circumstances, including, without limitation,
         any of the following circumstances: (i) any lack of validity or
         enforceability of this Agreement or any of the Loan Papers; (ii) the
         existence of any claim, setoff, defense, or other Right which
         Borrower may have at any time against a beneficiary named in a LC,
         any transferee of any LC (or any Person for whom any such transferee
         may be acting), Administrative Agent, any Lender, or any other
         Person, whether in connection with this Agreement, any LC, the
         transactions contemplated herein, or any unrelated transactions
         (including any underlying transaction between Borrower and the
         beneficiary named in any such LC); (iii) any draft, certificate, or
         any other document presented under the LC proving to be forged,
         fraudulent, invalid, or insufficient in any respect or any statement
         therein being untrue or inaccurate in any respect; and (iv) the
         occurrence of any Potential Default or Default.

             (f Borrower acknowledges that each LC will be deemed issued upon
         delivery to its beneficiary or Borrower. If Borrower requests any LC
         be delivered to Borrower rather than the beneficiary, and Borrower
         subsequently cancels such LC, Borrower agrees to return it to
         Administrative Agent TOGETHER WITH Borrower's written certification
         that it has never been delivered to such beneficiary. If any LC is
         delivered to its beneficiary pursuant to Borrower's instructions, no
         cancellation thereof by Borrower shall be effective without written
         consent of such beneficiary to Administrative Agent and return of
         such LC to Administrative Agent. Borrower hereby agrees that if
         Administrative Agent becomes involved in any dispute as a result of
         Borrower's cancellation of any LC, it shall indemnify Administrative
         Agent and Lenders for all losses, costs, damages, expenses, and
         reasonable attorneys' fees suffered or incurred by Administrative
         Agent and Lenders as a direct result thereof.

             (g Administrative Agent agrees with each Lender that it will
         exercise and give the same care and attention to each LC as it gives
         to its other letters of credit, and Administrative Agent's sole
         liability to each Lender with respect to such LCs (OTHER THAN
         liability arising from the gross negligence or willful misconduct of
         Administrative Agent) shall be to distribute promptly to each Lender
         who has acquired a participating interest therein such Lender's
         ratable portion of any payments made to Administrative Agent by
         Borrower pursuant to SECTION 2.2(c). Each Lender and Borrower agree
         that, in paying any draw under any LC, Administrative Agent shall
         not have any responsibility to obtain any document (OTHER THAN any
         documents required by the respective LC) or to ascertain or inquire
         as to the validity or accuracy of any such document or the authority
         of the Person delivering any such document. Administrative Agent,
         Lenders, and their respective Representatives shall not be liable to
         any other Lender or any Company for the use which may be made of any
         LC or for any acts or omissions of any beneficiary thereof in
         connection therewith. Any action, inaction, error, delay, or
         omission taken or suffered by Administrative Agent or any of its
         Representatives under or in connection with any LC, the draws,
         drafts, or documents relating thereto, or the transmission,
         dispatch, or delivery of any message or advice related thereto, if
         in good faith and in conformity with such Laws as Administrative
         Agent or any of its Representatives may deem applicable and in
         accordance with the standards of care specified in the UNIFORM
         CUSTOMS AND PRACTICE FOR DOCUMENTARY CREDITS issued by the
         International Chamber of Commerce, as in effect on the date of issue
         of such LC, shall be binding upon the Companies and Lenders and
         shall not place Administrative Agent or any of its Representatives
         under any resulting liability to any Company or any Lender. Any
         action taken or omitted to be taken by Administrative Agent under or
         in connection with any LC if taken or omitted in the absence of
         gross negligence or wilful misconduct shall not create for
         Administrative Agent any resulting liability to any Lender or any
         Company.

                                      25
<PAGE>

             (h On the Termination Date or upon any demand by Administrative
         Agent upon the occurrence and during continuance of a Default,
         Borrower shall provide to Administrative Agent, for the benefit of
         Lenders, (i) cash collateral in an amount equal to 110% of the LC
         Exposure existing on such date, such cash and all interest thereon
         shall constitute cash collateral for all LCs, and (ii) such
         additional cash collateral as Administrative Agent may from time to
         time require, so that the cash collateral amount shall at all times
         equal or exceed 110% the LC Exposure.

             (i Any cash collateral deposited under CLAUSE (h) above, and all
         interest earned thereon, shall be held by Administrative Agent and
         invested and reinvested at the expense and the written direction of
         Borrower, in U.S. Treasury Bills with maturities of no more than 90
         days from the date of investment

             (j IN ADDITION TO AMOUNTS PAYABLE AS ELSEWHERE PROVIDED IN THIS
         AGREEMENT, BORROWER HEREBY AGREES TO PROTECT, INDEMNIFY, PAY, AND
         SAVE ADMINISTRATIVE AGENT AND EACH LENDER HARMLESS FROM AND AGAINST
         ANY AND ALL CLAIMS, DEMANDS, LIABILITIES, DAMAGES, OR LOSSES OF, OR
         OWED TO THIRD PARTIES (INCLUDING ANY OF THE FOREGOING ARISING FROM
         THE NEGLIGENCE OF ADMINISTRATIVE AGENT, LENDERS, OR THEIR RESPECTIVE
         REPRESENTATIVES), AND ANY AND ALL RELATED COSTS, CHARGES, AND
         EXPENSES (INCLUDING REASONABLE ATTORNEYS' FEES, INCLUDING ALLOCATED
         COSTS OF INTERNAL COUNSEL), WHICH ADMINISTRATIVE AGENT, OR ANY
         LENDER MAY INCUR OR BE SUBJECT TO AS A CONSEQUENCE, DIRECT OR
         INDIRECT, OF (A) THE ISSUANCE OF ANY LC, OR (B) THE FAILURE OF
         ADMINISTRATIVE AGENT TO HONOR A DRAFT UNDER SUCH LC AS A RESULT OF
         ANY ACT OR OMISSION, WHETHER RIGHTFUL OR WRONGFUL, OF ANY PRESENT OR
         FUTURE GOVERNMENTAL AUTHORITY; PROVIDED THAT, BORROWER SHALL HAVE NO
         LIABILITY TO INDEMNIFY ADMINISTRATIVE AGENT OR ANY LENDER IN RESPECT
         OF ANY LIABILITY ARISING OUT OF THE GROSS NEGLIGENCE OR WILFUL
         MISCONDUCT OF SUCH PARTY OR ANY REPRESENTATIVES OF SUCH PARTY. THE
         PROVISIONS OF AND UNDERTAKINGS AND INDEMNIFICATIONS SET FORTH IN
         THIS SECTION 2.2(j) SHALL SURVIVE THE SATISFACTION AND PAYMENT OF
         THE OBLIGATION AND TERMINATION OF THIS AGREEMENT.

             (k Although referenced in any LC, terms of any particular
         agreement or other obligation to the beneficiary are not in any
         manner incorporated herein. The fees and other amounts payable with
         respect to each LC shall be as provided in this Agreement, drafts
         under any LC shall be deemed part of the Obligation, and in the
         event of any conflict between the terms of this Agreement and any LC
         Agreement, the terms of this Agreement shall be controlling.

         2.3 TERMINATIONS OR REDUCTIONS OF COMMITMENTS.

             (a VOLUNTARY COMMITMENT REDUCTIONS. Without premium or penalty,
         and upon giving not less than ten Business Days prior written and
         irrevocable notice to Administrative Agent, Borrower may terminate
         in whole or in part the unused portion of the Commitment; PROVIDED
         THAT: (i) each partial termination shall be in an amount of not less
         than $5,000,000 or a greater integral multiple of $1,000,000; (ii)
         the amount of the Commitment may not be reduced below the Commitment
         Usage; and (iii) each reduction shall be allocated ratably among
         Lenders in accordance with their respective Committed Sums. Promptly
         after receipt of such notice of termination or reduction,
         Administrative Agent shall notify Lenders of the proposed
         cancellation or reduction. Such termination or partial reduction of
         the Commitment shall be effective on the Business Day specified in
         Borrower's notice (which date must be at least ten Business Days
         after Borrower's delivery of

                                      26
<PAGE>

         such notice). In the event that the Commitment is reduced to zero
         at a time when there is no LC Exposure or Principal Debt
         outstanding, this Agreement shall be terminated to the extent
         specified in SECTION 13.14, and all commitment fees and other fees
         then earned and unpaid hereunder and all other amounts of the
         Obligation then due and owing shall be immediately due and payable,
         without notice or demand by Administrative Agent or any Lender.

             (b SCHEDULED MANDATORY COMMITMENT REDUCTIONS. Until such time as
         the Principal Debt has been repaid in full, the Commitment shall be
         automatically and permanently reduced (and the Principal Debt shall
         be prepaid for the ratable account of Lenders to the extent required
         by SECTION 3.3(a)(i)), on the dates shown in the table below by the
         "COMMITMENT REDUCTION AMOUNT" corresponding to such date of
         reduction:

<TABLE>
<CAPTION>
         -----------------------------------------------------------------------
             DATE OF REDUCTION                    COMMITMENT REDUCTION AMOUNT
         -----------------------------------------------------------------------
         <S>                                      <C>
             September 30, 2002                           $1,250,000
         -----------------------------------------------------------------------
             December 31, 2002                            $1,250,000
         -----------------------------------------------------------------------
               March 31, 2003                             $1,250,000
         -----------------------------------------------------------------------
               June 30, 2003                              $1,250,000
         -----------------------------------------------------------------------
             September 30, 2003                           $5,000,000
         -----------------------------------------------------------------------
             December 31, 2003                            $5,000,000
         -----------------------------------------------------------------------
               March 31, 2004                             $5,000,000
         -----------------------------------------------------------------------
               June 30, 2004                              $5,000,000
         -----------------------------------------------------------------------
             September 30, 2004                           $6,250,000
         -----------------------------------------------------------------------
             December 31, 2004                            $6,250,000
         -----------------------------------------------------------------------
               March 31, 2005                             $6,250,000
         -----------------------------------------------------------------------
               June 30, 2005                              $6,250,000
         -----------------------------------------------------------------------
</TABLE>

         The Commitment shall be reduced to zero (and all outstanding Principal
         Debt, TOGETHER WITH accrued and unpaid interest shall be paid in full)
         on the Termination Date. The amount of any commitment reductions
         required by this SECTION 2.3(b) shall be further reduced as a result of
         the application of commitment reductions and prepayments in accordance
         with SECTIONS 2.3 and 3.3.

             (c OTHER MANDATORY COMMITMENT REDUCTIONS. Until such time as the
         Principal Debt has been repaid in full, the Commitment shall be
         reduced (and the Principal Debt shall be prepaid to the extent
         required by SECTION 3.3(a)(i)) in the amounts and upon the
         occurrence of the following events:

                (i    Concurrently with any Debt Issuance by any Company, the
             Commitment shall be permanently reduced (and the Principal Debt
             shall be prepaid to the extent required

                                      27
<PAGE>

             by SECTION 3.3(a)(i)) by an amount equal to 100% of the Net Cash
             Proceeds realized by such Company from such Debt Issuance;

                (ii   Concurrently with the consummation of any Significant
             Sale by any Company (which Significant Sale must be otherwise
             permitted under the Loan Papers or shall have been consented to
             by Required Lenders), the Commitment shall be permanently
             reduced (and the Principal Debt shall be prepaid to the extent
             required by SECTION 3.3(a)(i)) by an amount equal to 100% of the
             Net Cash Proceeds if such Net Cash Proceeds or any portion
             thereof have not been reinvested in Telecommunications Assets of
             the Companies within six months from the date of consummation of
             such Significant Sale;

                (iii  If a Default or Potential Default exists at the time of
             any prepayment made pursuant to SECTION 3.3(a)(ii), then the
             Commitment shall be reduced by the amount of such prepayment.

             (d APPLICATION OF COMMITMENT REDUCTION. All Commitment
         reductions shall be applied ratably to each Lender's Committed Sum,
         and shall be applied to the regularly-scheduled Commitment
         reductions under SECTION 2.3(b) in inverse order of maturities; and
         if required pursuant to SECTION 3.3(a)(i), Borrower shall also make
         a mandatory prepayment of the Principal Debt, TOGETHER WITH (x) all
         accrued and unpaid interest on the principal amount so prepaid and
         (y) any Consequential Loss arising as a result thereof.

         2.4 BORROWING PROCEDURE.  The following procedures apply to all
             Borrowings:

             (a Each Borrowing shall be made on Borrower's notice (a "NOTICE
         OF BORROWING," substantially in the form of EXHIBIT B-1) to
         Administrative Agent requesting that Lenders fund a Borrowing on a
         certain date (the "BORROWING DATE"), which notice (i) shall be
         irrevocable and binding on Borrower, (ii) shall specify the
         Borrowing Date (which may not occur more frequently than once each
         calendar week prior to the Second Capital Date), amount, Type, and
         (for a Borrowing comprised of Eurodollar Rate Borrowings) Interest
         Period, (iii) must be received by Administrative Agent no later than
         10:00 a.m. Dallas, Texas time on the third Business Day preceding
         the Borrowing Date for any Eurodollar Rate Borrowing or on the same
         Business Day for any Base Rate Borrowing, and (iv) shall specify the
         purpose(s) for which Borrower is requesting such Borrowing, which
         purposes must be consistent with the uses, projections, and terms
         set forth in the Benchmark Budget; (PROVIDED THAT if $2,000,000 or
         more of any requested Borrowing is to be used for Capital
         Expenditures, Borrower shall attach copies of the invoices
         supporting such Capital Expenditures to the related Notice of
         Borrowing). Administrative Agent shall timely notify each Lender
         with respect to each Notice of Borrowing;

             (b Each Lender shall remit its Pro Rata Part of each requested
         Borrowing to Administrative Agent's principal office in Dallas,
         in funds which are or will be available for immediate use by
         Administrative Agent by 1:00 p.m. Dallas time on the Borrowing Date
         therefor. Subject to receipt of such funds, Administrative Agent shall
         (unless to its actual knowledge any of the conditions precedent
         therefor have not been satisfied by Borrower or waived by Required
         Lenders) make such funds available to Borrower by causing such funds to
         be deposited to Borrower's account as designated to Administrative
         Agent by Borrower. Notwithstanding the foregoing, UNLESS Administrative
         Agent shall have been notified by a Lender prior to a Borrowing Date
         that such Lender does not intend to make available to Administrative
         Agent such Lender's Pro Rata Part of the applicable Borrowing,
         Administrative Agent may assume that such Lender has made such proceeds
         available to Administrative Agent on such date, as required herein, and
         Administrative

                                      28
<PAGE>

         Agent may (unless to its actual knowledge any of the conditions
         precedent therefor have not been satisfied by Borrower or waived by
         Required Lenders), in reliance upon such assumption (but shall not
         be required to), make available to Borrower a corresponding amount
         in accordance with the foregoing terms, but, if such corresponding
         amount is not in fact made available to Administrative Agent by such
         Lender on such Borrowing Date, Administrative Agent shall be
         entitled to recover such corresponding amount on demand (i) from
         such Lender, TOGETHER WITH interest at the Federal Funds Rate during
         the period commencing on the date such corresponding amount was made
         available to Borrower and ending on (but excluding) the date
         Administrative Agent recovers such corresponding amount from such
         Lender, or (ii) if such Lender fails to pay such corresponding
         amount forthwith upon such demand, then from Borrower, TOGETHER WITH
         interest at a rate per annum equal to the applicable rate for such
         Borrowing during the period commencing on such Borrowing Date and
         ending on (but excluding) the date Administrative Agent recovers
         such corresponding amount from Borrower. No Lender shall be
         responsible for the failure of any other Lender to make its Pro Rata
         Part of any Borrowing.

SECTION 3    TERMS OF PAYMENT.

         3.1 LOAN ACCOUNTS, NOTES, AND PAYMENTS.

             (a The Principal Debt owed to each Lender by each Borrower shall
         be evidenced by the Notes, one payable to each Lender in the maximum
         stated principal amount equal to such Lender's Applicable Percentage
         of the Commitment as of the Closing Date, or, in the case of an
         Additional Borrower, as of the date such Additional Borrower
         satisfies the requirements of SECTION 7.4 and SCHEDULE 7.4.

             (b Each payment or prepayment on the Obligation is due and must
         be paid at Administrative Agent's principal office in Dallas in
         funds which are or will be available for immediate use by
         Administrative Agent by 12:00 noon Dallas, Texas time on the day due
         without setoff, deduction, or counterclaim. Subject to SECTION 3.9
         and the definition of "INTEREST PERIOD," whenever any payment under
         the Loan Papers shall be stated to be due on a day that is not a
         Business Day, such payment may be made on the next succeeding
         Business Day, and such extension of time in such case shall be
         included in the computation of interest and fees, as applicable.
         Payments made after 12:00 noon, Dallas, Texas, time shall be deemed
         made on the Business Day next following. Administrative Agent shall
         pay to each Lender any payment or prepayment to which such Lender is
         entitled hereunder on the same day Administrative Agent shall have
         received the same from Borrower; PROVIDED such payment or prepayment
         is received by Administrative Agent prior to 12:00 noon Dallas,
         Texas time, and otherwise before 12:00 noon Dallas time on the
         Business Day next following. If and to the extent Administrative
         Agent shall not make such payments to Lenders when due as set forth
         in the preceding sentence, such unpaid amounts shall accrue
         interest, payable by Administrative Agent, at the Federal Funds Rate
         from the due date until (but not including) the date on which
         Administrative Agent makes such payments to Lenders.

         3.2 INTEREST AND PRINCIPAL PAYMENTS.

             (a Interest on each Eurodollar Rate Borrowing shall be due and
         payable as it accrues on the last day of its respective Interest Period
         and on the Termination Date; PROVIDED THAT, (i) with respect to
         Eurodollar Rate Borrowings having an Interest Period in excess of three
         months, Borrower shall pay interest in arrears on the three month
         anniversary of the date on which such Interest Period commences, on
         each three month anniversary thereafter, and on the expiration of each
         Interest

                                      29
<PAGE>

         Period. Interest on each Base Rate Borrowing shall be due and payable
         as it accrues on each March 31, June 30, September 30, and December 31,
         and on the Termination Date.

             (b On the Termination Date, the aggregate Principal Debt
         then-outstanding shall be due and payable.

         3.3 PREPAYMENTS.

             (a  MANDATORY PREPAYMENTS.

                 (i  On any date of determination if the SUM of the Principal
             Debt PLUS (without duplication) the LC Exposure, exceeds the
             Available Commitment then in effect, then Borrower shall make a
             mandatory prepayment of the Principal Debt in at least the amount
             of such excess, TOGETHER WITH (x) all accrued and unpaid interest
             on the principal amount so prepaid and (y) any Consequential Loss
             arising as a result thereof.

                 (ii Concurrently with any Equity Issuance or Borrower's receipt
             of Capital Contribution proceeds, by Borrower, the Principal Debt
             shall be prepaid by an amount equal to 100% of the proceeds
             received by Borrower from such Equity Issuance or other Capital
             Contribution.

         All mandatory prepayments hereunder shall be applied Pro Rata to each
         Lender's Committed Sum and shall be applied to the regularly-scheduled
         reductions of the Commitment hereunder in inverse order of maturity.

             (b OPTIONAL PREPAYMENTS. EXCEPT as set forth herein, after
         giving Administrative Agent advance written notice of the intent to
         prepay, Borrower may voluntarily prepay all or any part of the
         Principal Debt PROVIDED THAT: (i) such notice must be received by
         Administrative Agent by 12:00 noon Dallas, Texas time on the third
         Business Day preceding the date of prepayment of any Borrowing, (ii)
         each such partial prepayment must be in a minimum amount of at least
         $3,000,000 or a greater integral multiple of $1,000,000 thereof; and
         (iii) Borrower shall pay any related Consequential Loss within ten days
         after demand therefor. Each notice of prepayment shall specify the
         prepayment date and the Type of Borrowing(s) and amount(s) of such
         Borrowing(s) to be prepaid and shall constitute a binding obligation of
         Borrower to make a prepayment on the date stated therein, TOGETHER WITH
         (unless such prepayment is made with respect to a Base Rate Borrowing)
         accrued and unpaid interest to the date of such payment on the
         aggregate principal amount prepaid. UNLESS a Default or Potential
         Default has occurred and is continuing (or would arise as a result
         thereof), any payment or prepayment of the Principal Debt may be
         reborrowed by Borrower, subject to the terms and conditions hereof.

         3.4 INTEREST OPTIONS. EXCEPT where specifically otherwise provided,
Borrowings shall bear interest at a rate per annum equal to the LESSER of (a) as
to the respective Type of Borrowing (as designated by Borrower in accordance
with this Agreement), the Base Rate PLUS the Applicable Margin for Base Rate
Borrowings or the Adjusted Eurodollar Rate PLUS the Applicable Margin for
Eurodollar Rate Borrowings, AND (b) the Maximum Rate. Each change in the Base
Rate or the Maximum Rate, subject to the terms of this Agreement, will become
effective, without notice to Borrower or any other Person, upon the effective
date of such change.

         3.5 QUOTATION OF RATES. It is hereby acknowledged that a Responsible
Officer or other appropriately designated officer of Borrower may call
Administrative Agent on or before the date on which

                                       30
<PAGE>

a Notice of Borrowing is to be delivered by Borrower in order to receive an
indication of the rates then in effect, but such indicated rates shall
neither be binding upon Administrative Agent or Lenders nor affect the rate
of interest which thereafter is actually in effect when the Notice of
Borrowing is given.

         3.6 DEFAULT RATE. At the option of Required Lenders and to the
extent permitted by Law, all past-due Principal Debt and accrued interest
thereon shall bear interest from maturity (stated or by acceleration) at the
Default Rate until paid, regardless whether such payment is made before or
after entry of a judgment.

         3.7 INTEREST RECAPTURE. If the designated rate applicable to any
Borrowing exceeds the Maximum Rate, the rate of interest on such Borrowing
shall be limited to the Maximum Rate, but any subsequent reductions in such
designated rate shall not reduce the rate of interest thereon below the
Maximum Rate until the total amount of interest accrued thereon equals the
amount of interest which would have accrued thereon if such designated rate
had at all times been in effect. In the event that at maturity (stated or by
acceleration), or at final payment of the Principal Debt, the total amount of
interest paid or accrued is less than the amount of interest which would have
accrued if such designated rates had at all times been in effect, then, at
such time and to the extent permitted by Law, Borrower shall pay an amount
equal to the difference between (a) the LESSER of the amount of interest
which would have accrued if such designated rates had at all times been in
effect AND the amount of interest which would have accrued if the Maximum
Rate had at all times been in effect, and (b) the amount of interest actually
paid or accrued on the Principal Debt.

         3.8 INTEREST CALCULATIONS.

             (a) All payments of interest shall be calculated on the basis
         of actual number of days (including the first day but excluding the
         last day) elapsed but computed as if each calendar year consisted of
         360 days in the case of a Eurodollar Rate Borrowing (unless such
         calculation would result in the interest on the Borrowings exceeding
         the Maximum Rate, in which event such interest shall be calculated on
         the basis of a year of 365 or 366 days, as the case may be), and 365 or
         366 days, as the case may be, in the case of a Base Rate Borrowing. All
         interest rate determinations and calculations by Administrative Agent
         shall be conclusive and binding absent manifest error.

             (b) The provisions of this Agreement relating to the
         calculation of the Base Rate and the Adjusted Eurodollar Rate are
         included only for the purpose of determining the rate of interest or
         other amounts to be paid hereunder that are based upon such rate.

         3.9 MAXIMUM RATE. Regardless of any provision contained in any Loan
Paper, neither Administrative Agent nor any Lender shall ever be entitled to
contract for, charge, take, reserve, receive, or apply, as interest on the
Obligation, or any part thereof, any amount in excess of the Maximum Rate,
and, if Lenders ever do so, then such excess shall be deemed a partial
prepayment of principal and treated hereunder as such and any remaining
excess shall be refunded to Borrower. In determining if the interest paid or
payable exceeds the Maximum Rate, Borrower and Lenders shall, to the maximum
extent permitted under applicable Law, (a) treat all Borrowings as but a
single extension of credit (and Lenders and Borrower agree that such is the
case and that provision herein for multiple Borrowings is for convenience
only), (b) characterize any nonprincipal payment as an expense, fee, or
premium rather than as interest, (c) exclude voluntary prepayments and the
effects thereof, and (d) amortize, prorate, allocate, and spread the total
amount of interest throughout the entire contemplated term of the Obligation;
PROVIDED THAT, if the Obligation is paid and performed in full prior to the
end of the full contemplated term thereof, and if the interest received for
the actual period of existence thereof exceeds the Maximum Amount, Lenders
shall refund such excess, and,

                                       31
<PAGE>

in such event, Lenders shall not, to the extent permitted by Law, be subject
to any penalties provided by any Laws for contracting for, charging, taking,
reserving, or receiving interest in excess of the Maximum Amount.

         3.10 INTEREST PERIODS. When Borrower requests any Eurodollar Rate
Borrowing, Borrower may elect the interest period (each an "INTEREST PERIOD")
applicable thereto, which shall be, at Borrower's option, one, two, three, or
six months (or other periods, if requested by Borrower and agreed to by all
Lenders); PROVIDED, HOWEVER, that: (a) the initial Interest Period for a
Eurodollar Rate Borrowing shall commence on the date of such Borrowing
(including the date of any conversion thereto), and each Interest Period
occurring thereafter in respect of such Borrowing shall commence on the day
on which the next preceding Interest Period applicable thereto expires; (b)
if any Interest Period for a Eurodollar Rate Borrowing begins on a day for
which there is no numerically corresponding Business Day in the calendar
month at the end of such Interest Period, such Interest Period shall end on
the next Business Day immediately following what otherwise would have been
such numerically corresponding day in the calendar month at the end of such
Interest Period (UNLESS such date would be in a different calendar month from
what would have been the month at the end of such Interest Period, or UNLESS
there is no numerically corresponding day in the calendar month at the end of
the Interest Period; whereupon, such Interest Period shall end on the last
Business Day in the calendar month at the end of such Interest Period); (c)
no Interest Period may be chosen with respect to any portion of the Principal
Debt which would extend beyond the scheduled repayment date (including any
dates on which mandatory prepayments are required to be made) for such
portion of the Principal Debt; and (d) no more than an aggregate of five
Interest Periods shall be in effect at one time.

         3.11 CONVERSIONS. Borrower may (a) convert a Eurodollar Rate
Borrowing on the last day of an Interest Period to a Base Rate Borrowing, (b)
convert a Base Rate Borrowing at any time to a Eurodollar Rate Borrowing, and
(c) elect a new Interest Period (in the case of a Eurodollar Rate Borrowing),
by giving notice (a "NOTICE OF CONVERSION," substantially in the form of
EXHIBIT B-2) of such intent no later than 10:00 a.m. Dallas, Texas time on
the third Business Day prior to the date of conversion or the last day of the
Interest Period, as the case may be (in the case of a conversion to a
Eurodollar Rate Borrowing or an election of a new Interest Period), and no
later than 10:00 a.m. Dallas, Texas time one Business Day prior to the last
day of the Interest Period (in the case of a conversion to a Base Rate
Borrowing); PROVIDED THAT, the principal amount converted to, or continued
as, a Eurodollar Rate Borrowing shall be in an amount not less than
$2,000,000 or a greater integral multiple of $1,000,000. Administrative Agent
shall timely notify each Lender with respect to each Notice of Conversion.
Absent Borrower's Notice of Conversion or election of a new Interest Period,
a Eurodollar Rate Borrowing shall be deemed converted to a Base Rate
Borrowing effective as of the expiration of the Interest Period applicable
thereto. No Eurodollar Rate Borrowing may be either made or continued as a
Eurodollar Rate Borrowing, and no Base Rate Borrowing may be converted to a
Eurodollar Rate Borrowing, if the interest rate for such Eurodollar Rate
Borrowing would exceed the Maximum Rate. The right to convert from a Base
Rate Borrowing to a Eurodollar Rate Borrowing, or to continue as a Eurodollar
Rate Borrowing, shall not be available during the occurrence of a Default or
a Potential Default.

         3.12 ORDER OF APPLICATION.

              (a) Payments and prepayments of the Obligation shall be applied
         in the order and manner specified in this Agreement; PROVIDED,
         HOWEVER, if no order is otherwise specified and no Default or
         Potential Default has occurred and is continuing, payments and
         prepayments of the Obligation shall be applied first to fees, second
         to accrued interest then due and payable on the Principal Debt,
         third to the Principal Debt, and then to the remaining Obligation in
         the order and manner as Borrower may direct.

                                      32
<PAGE>

             (b) If a Default or Potential Default has occurred and is
         continuing (or if Borrower fails to give directions as permitted under
         SECTION 3.12(a)), any payment or prepayment (including proceeds from
         the exercise of any Rights) shall be applied to the Obligation in the
         following order: (i) to the ratable payment of all fees, expenses, and
         indemnities for which Agents or Lenders have not been paid or
         reimbursed in accordance with the Loan Papers (as used in this SECTION
         3.12(b)(i), a "RATABLE PAYMENT" for any Lender or any Agent shall be,
         on any date of determination, that proportion which the portion of the
         total fees, expenses, and indemnities owed to such Lender or such Agent
         bears to the total aggregate fees and indemnities owed to all Lenders
         and Agents on such date of determination); (ii) to the ratable payment
         of accrued and unpaid interest on the Principal Debt (as used in this
         SECTION 3.12(b)(ii), "RATABLE PAYMENT" means, for any Lender, on any
         date of determination, that proportion which the accrued and unpaid
         interest on the Principal Debt owed to such Lender bears to the total
         accrued and unpaid interest under the Loan Papers owed to all Lenders);
         (iii) to the ratable payment of any reimbursement obligation with
         respect to any LC issued pursuant to the Agreement which is due and
         payable and which remains unfunded by any Borrowing, PROVIDED THAT,
         such payments shall be allocated ratably among Bank of America, N.A.,
         and the Lenders which have funded their participations in such LC; (iv)
         to the ratable payment of the Principal Debt (as used in this SECTION
         3.12(b)(iv), "RATABLE PAYMENT" means for any Lender, on any date of
         determination, that proportion which the Principal Debt owed to such
         Lender bears to the SUM of the Principal Debt owed to all Lenders; (v)
         as a deposit with Administrative Agent, for the benefit of Lenders, as
         security for, and to provide for the payment of, any reimbursement
         obligations, if any, thereafter arising with respect to any issued and
         outstanding LCs issued pursuant to the Agreement; and (vi) to the
         payment of the remaining Obligation in the order and manner Required
         Lenders deem appropriate.

Subject to the provisions of SECTION 12 and PROVIDED THAT Administrative Agent
shall not in any event be bound to inquire into or to determine the validity,
scope, or priority of any interest or entitlement of any Lender and may suspend
all payments or seek appropriate relief (including, without limitation,
instructions from Required Lenders or an action in the nature of interpleader)
in the event of any doubt or dispute as to any apportionment or distribution
contemplated hereby, Administrative Agent shall promptly distribute such amounts
to each Lender in accordance with the Agreement and the related Loan Papers.

         3.13 SHARING OF PAYMENTS, ETC. If any Lender shall obtain any payment
(whether voluntary, involuntary, or otherwise, including, without limitation, as
a result of exercising its Rights under Section 3.14) which is in excess of its
ratable share of any such payment, such Lender shall purchase from the other
Lenders such participations as shall be necessary to cause such purchasing
Lender to share the excess payment ratably with each of them; PROVIDED, HOWEVER,
that if all or any portion of such excess payment is thereafter recovered from
such purchasing Lender, the purchase shall be rescinded and the purchase price
restored to the extent of such recovery. Borrower agrees that any Lender so
purchasing a participation from another Lender pursuant to this Section may, to
the fullest extent permitted by Law, exercise all of its Rights of payment
(including the Right of offset) with respect to such participation as fully as
if such Lender were the direct creditor of Borrower in the amount of such
participation.

         3.14 OFFSET. Upon the occurrence and during the continuance of a
Default, each Lender shall be entitled to exercise (for the benefit of all
Lenders in accordance with SECTION 3.13) the Rights of offset and/or banker's
Lien against each and every account and other property, or any interest therein,
which any Company or any other Guarantor, may now or hereafter have with, or
which is now or hereafter in the possession of, such Lender to the extent of the
full amount of the Obligation.

                                      33
<PAGE>

         3.15 BOOKING BORROWINGS. To the extent permitted by Law, any Lender may
make, carry, or transfer its Borrowings at, to, or for the account of any of its
branch offices or the office of any of its Affiliates; PROVIDED THAT, no
Affiliate shall be entitled to receive any greater payment under SECTION 4 than
the transferor Lender would have been entitled to receive with respect to such
Borrowings.

SECTION 4 CHANGE IN CIRCUMSTANCES.

         4.1 INCREASED COST AND REDUCED RETURN.

                  (a) If, after the date hereof, the adoption of any applicable
         Law or any change in any applicable Law or any change in the
         interpretation or administration thereof by any Governmental Authority,
         or compliance by any Lender (or its Applicable Lending Office) with any
         request or directive (whether or not having the force of law) of any
         such Governmental Authority:

                           (i) shall subject such Lender (or its Applicable
                  Lending Office) to any Tax or other charge with respect to any
                  Eurodollar Rate Borrowing, its Notes, or its obligation to
                  loan Eurodollar Rate Borrowings, or change the basis of
                  taxation of any amounts payable to such Lender (or its
                  Applicable Lending Office) under this Agreement or its Notes
                  in respect of any Eurodollar Rate Borrowings (OTHER THAN taxes
                  imposed on the overall net income of such Lender by the
                  jurisdiction in which such Lender has its principal office or
                  such Applicable Lending Office);

                           (ii) shall impose, modify, or deem applicable any
                  reserve, special deposit, assessment, or similar requirement
                  (OTHER THAN the Reserve Requirement utilized in the
                  determination of the Adjusted Eurodollar Rate) relating to any
                  extensions of credit or other assets of, or any deposits with
                  or other liabilities or commitments of, such Lender (or its
                  Applicable Lending Office), including the commitment of such
                  Lender hereunder; or

                           (iii) shall impose on such Lender (or its Applicable
                  Lending Office) or the London interbank market any other
                  condition affecting this Agreement or its Notes or any of such
                  extensions of credit or liabilities or commitments;

         and the result of any of the foregoing is to increase the cost to such
         Lender (or its Applicable Lending Office) of making, converting into,
         continuing, or maintaining any Eurodollar Rate Borrowings or to reduce
         any sum received or receivable by such Lender (or its Applicable
         Lending Office) under this Agreement or its Notes with respect to any
         Eurodollar Rate Borrowing, then Borrower shall pay to such Lender on
         demand such amount or amounts as will compensate such Lender for such
         increased cost or reduction. If any Lender requests compensation by
         Borrower under this SECTION 4.1(a), Borrower may, by notice to such
         Lender (with a copy to Administrative Agent), suspend the obligation of
         such Lender to loan or continue Borrowings of the Type with respect to
         which such compensation is requested, or to convert Borrowings of any
         other Type into Borrowings of such Type, until the event or condition
         giving rise to such request ceases to be in effect (in which case the
         provisions of SECTION 4.4 shall be applicable); PROVIDED, THAT such
         suspension shall not affect the right of such Lender to receive the
         compensation so requested.

                  (b) If, after the date hereof, any Lender shall have
         determined that the adoption of any applicable Law regarding capital
         adequacy or any change therein or in the interpretation or
         administration thereof by any Governmental Authority charged with the
         interpretation or administration thereof, or any request or directive
         regarding capital adequacy (whether or not having

                                       34

<PAGE>

         the force of law) of any such Governmental Authority has or would
         have the effect of reducing the rate of return on the capital of
         such Lender or any corporation controlling such Lender as a
         consequence of such Lender's obligations hereunder to a level below
         that which such Lender or such corporation could have achieved but
         for such adoption, change, request, or directive (taking into
         consideration its policies with respect to capital adequacy), then
         from time to time upon demand Borrower shall pay to such Lender
         such additional amount or amounts as will compensate such Lender
         for such reduction.

                  (c) Each Lender shall promptly notify Borrower and
         Administrative Agent of any event of which it has knowledge, occurring
         after the date hereof, which will entitle such Lender to compensation
         pursuant to this Section and will designate a different Applicable
         Lending Office if such designation will avoid the need for, or reduce
         the amount of, such compensation and will not, in the judgment of such
         Lender, be otherwise disadvantageous to it. Any Lender claiming
         compensation under this Section shall furnish to Borrower and
         Administrative Agent a statement setting forth the additional amount or
         amounts to be paid to it hereunder which shall be conclusive in the
         absence of manifest error. In determining such amount, such Lender may
         use any reasonable averaging and attribution methods.

         4.2 LIMITATION ON TYPES OF LOANS. If on or prior to the first day of
any Interest Period for any Eurodollar Rate Borrowing:

                  (a) Administrative Agent determines (which determination shall
         be conclusive) that by reason of circumstances affecting the relevant
         market, adequate and reasonable means do not exist for ascertaining the
         Eurodollar Rate for such Interest Period; or

                  (b) Required Lenders determine (which determination shall be
         conclusive) and notify Administrative Agent that the Adjusted
         Eurodollar Rate will not adequately and fairly reflect the cost to
         Lenders of funding Eurodollar Rate Borrowings for such Interest Period;

then Administrative Agent shall give Borrower prompt notice thereof specifying
the relevant amounts or periods, and SO LONG AS such condition remains in
effect, Lenders shall be under no obligation to fund additional Eurodollar Rate
Borrowings, continue Eurodollar Rate Borrowings, or to convert Base Rate
Borrowings into Eurodollar Rate Borrowings, and Borrower shall, on the last
day(s) of the then current Interest Period(s) for the outstanding Eurodollar
Rate Borrowings, either prepay such Borrowings or convert such Borrowings into
Base Rate Borrowings in accordance with the terms of this Agreement.

         4.3 ILLEGALITY. Notwithstanding any other provision of this Agreement,
in the event that it becomes unlawful for any Lender or its Applicable Lending
Office to make, maintain, or fund Eurodollar Rate Borrowings hereunder, then
such Lender shall promptly notify Borrower thereof and such Lender's obligation
to make or continue Eurodollar Rate Borrowings and to convert other Base Rate
Borrowings into Eurodollar Rate Borrowings shall be suspended until such time as
such Lender may again make, maintain, and fund Eurodollar Rate Borrowings (in
which case the provisions of SECTION 4.4 shall be applicable).

         4.4 TREATMENT OF AFFECTED LOANS. If the obligation of any Lender to
fund Eurodollar Rate Borrowings or to continue, or to convert Base Rate
Borrowings into Eurodollar Rate Borrowings, shall be suspended pursuant to
SECTIONS 4.1, 4.2, or 4.3, such Lender's Eurodollar Rate Borrowings shall be
automatically converted into Base Rate Borrowings on the last day(s) of the then
current Interest Period(s) for Eurodollar Rate Borrowings (or, in the case of a
conversion required by SECTION 4.3, on such earlier date as such Lender may
specify to Borrower with a copy to Administrative Agent) and, UNLESS and until
such

                                       35

<PAGE>

Lender gives notice as provided below that the circumstances specified in
SECTIONS 4.1, 4.2, or 4.3 that gave rise to such conversion no longer exist:

                  (a) to the extent that such Lender's Eurodollar Rate
         Borrowings have been so converted, all payments and prepayments of
         principal that would otherwise be applied to such Lender's Eurodollar
         Rate Borrowings shall be applied instead to its Base Rate Borrowings;
         and

                  (b) all Borrowings that would otherwise be made or continued
         by such Lender as Eurodollar Rate Borrowings shall be made or continued
         instead as Base Rate Borrowings, and all Borrowings of such Lender that
         would otherwise be converted into Eurodollar Rate Borrowings shall be
         converted instead into (or shall remain as) Base Rate Borrowings.

If such Lender gives notice to Borrower (with a copy to Administrative Agent)
that the circumstances specified in SECTIONS 4.1, 4.2, or 4.3 that gave rise to
the conversion of such Lender's Eurodollar Rate Borrowings pursuant to this
SECTION 4.4 no longer exist (which such Lender agrees to do promptly upon such
circumstances ceasing to exist) at a time when Eurodollar Rate Borrowings made
by other Lenders are outstanding, such Lender's Base Rate Borrowings shall be
automatically converted, on the first day(s) of the next succeeding Interest
Period(s) for such outstanding Eurodollar Rate Borrowings, to the extent
necessary so that, after giving effect thereto, all Eurodollar Rate Borrowings
held by Lenders and by such Lender are held ratably (as to principal amounts,
Types, and Interest Periods) in accordance with their respective Committed Sums.

         4.5 COMPENSATION. Upon the request of any Lender, Borrower shall pay to
such Lender such amount or amounts as shall be sufficient (in the reasonable
opinion of such Lender) to compensate it for any loss, cost, or expense
(including loss of anticipated profits) incurred by it as a result of:

                  (a) any payment, prepayment, or conversion of a Eurodollar
         Rate Borrowing for any reason (including, without limitation, the
         acceleration of the loan pursuant to SECTION 11.1) on a date OTHER THAN
         the last day of the Interest Period for such Borrowing; or

                  (b) any failure by Borrower for any reason (including, without
         limitation, the failure of any condition precedent specified in SECTION
         7.3 to be satisfied) to borrow, convert, continue, or prepay a
         Eurodollar Rate Borrowing on the date for such borrowing, conversion,
         continuation, or prepayment specified in the relevant notice of
         borrowing, prepayment, continuation, or conversion under this
         Agreement.

         4.6 TAXES.

                  (a) Any and all payments by Borrower to or for the account of
         any Lender or Administrative Agent hereunder or under any other Loan
         Paper shall be made free and clear of and without deduction for any and
         all present or future Taxes, EXCLUDING, in the case of each Lender and
         Administrative Agent, Taxes imposed on its income and franchise Taxes
         imposed on it by the jurisdiction under the Laws of which such Lender
         (or its Applicable Lending Office) or Administrative Agent (as the case
         may be) is organized, or any political subdivision thereof. If Borrower
         shall be required by Law to deduct any Taxes from or in respect of any
         sum payable under this Agreement or any other Loan Paper to any Lender
         or Administrative Agent, (i) the sum payable shall be increased as
         necessary so that after making all required deductions (including
         deductions applicable to additional sums payable under this SECTION
         4.6) such Lender or Administrative Agent receives an amount equal to
         the sum it would have received had no such deductions been made, (ii)

                                       36

<PAGE>

         Borrower shall make such deductions, (iii) Borrower shall pay the full
         amount deducted to the relevant taxation authority or other authority
         in accordance with applicable Law, and (iv) Borrower shall furnish to
         Administrative Agent, at its address listed in SCHEDULE 2.1, the
         original or a certified copy of a receipt evidencing payment thereof.

                  (b) In addition, Borrower agrees to pay any and all present or
         future stamp or documentary taxes and any other excise or property
         taxes or charges or similar levies which arise from any payment made
         under this Agreement or any other Loan Paper or from the execution or
         delivery of, or otherwise with respect to, this Agreement or any other
         Loan Paper (hereinafter referred to as "OTHER TAXES").

                  (c) Borrower agrees to indemnify each Lender and
         Administrative Agent for the full amount of Taxes and Other Taxes
         (including, without limitation, any Taxes or other Taxes imposed or
         asserted by any jurisdiction on amounts payable under this SECTION 4.6)
         paid by such Lender or Administrative Agent (as the case may be) and
         any liability (including penalties, interest, and expenses) arising
         therefrom or with respect thereto.

                  (d) Each Lender organized under the Laws of a jurisdiction
         outside the United States, on or prior to the date of its execution and
         delivery of this Agreement in the case of each Lender listed on the
         signature pages hereof and on or prior to the date on which it becomes
         a Lender in the case of each other Lender, and from time to time
         thereafter if requested in writing by Borrower or Administrative Agent
         (but only SO LONG AS such Lender remains lawfully able to do so), shall
         provide Borrower and Administrative Agent with (i) if such Lender is a
         "BANK" within the meaning of SECTION 881(c)(3)(a) of the Code, Internal
         Revenue Service Form 1001 or 4224, as appropriate, or any successor
         form prescribed by the Internal Revenue Service, certifying that such
         Lender is entitled to benefits under an income tax treaty to which the
         United States is a party which reduces the rate of withholding tax on
         payments of interest or certifying that the income receivable pursuant
         to this Agreement is effectively connected with the conduct of a trade
         or business in the United States, or (ii) if such Lender is not a
         "BANK" within the meaning of SECTION 881(c)(3)(a) of the Code and
         intends to claim an exemption from United States withholding tax under
         SECTION 871(h) or 881(c) of the Code with respect to payments of
         "PORTFOLIO INTEREST," a Form W-8, or any successor form prescribed by
         the Internal Revenue Service, and a certificate representing that such
         Lender is not a bank for purposes of SECTION 881(c) of the Code, is not
         a 10-percent shareholder (within the meaning of SECTION 871(h)(3)(b) of
         the Code) of Borrower, and is not a controlled foreign corporation
         related to Borrower (within the meaning of SECTION 864(d)(4) of the
         Code). Each Lender which so delivers a W-8, Form 1001, or 4224 further
         undertakes to deliver to Borrower and Administrative Agent additional
         forms (or a successor form) on or before the date such form expires or
         becomes obsolete or after the occurrence of any event requiring a
         change in the most recent form so delivered by it, in each case
         certifying that such Lender is entitled to receive payments from
         Borrower under any Loan Paper without deduction or withholding of any
         United States federal income taxes, unless an event (including without
         limitation any change in treaty, law or regulation) has occurred prior
         to the date on which any such delivery would otherwise be required
         which renders all such forms inapplicable or which would prevent such
         Lender from duly completing and delivering any such form with respect
         to it and such Lender advises Borrower and Administrative Agent that it
         is not capable of receiving such payments without any deduction or
         withholding of United States federal income tax.

                  (e) For any period with respect to which a Lender has failed
         to provide Borrower and Administrative Agent with the appropriate form
         pursuant to SECTION 4.6(d) (unless such failure is due

                                       37

<PAGE>

         to a change in Law occurring subsequent to the date on which a form
         originally was required to be provided), such Lender shall not be
         entitled to indemnification under SECTION 4.6(a) or 4.6(b) with
         respect to Taxes imposed by the United States; PROVIDED, HOWEVER,
         that should a Lender, which is otherwise exempt from or subject to
         a reduced rate of withholding tax, become subject to Taxes because
         of its failure to deliver a form required hereunder, Borrower shall
         take such steps as such Lender shall reasonably request to assist
         such Lender to recover such Taxes.

                  (f) If Borrower is required to pay additional amounts to or
         for the account of any Lender pursuant to this SECTION 4.6, then such
         Lender will agree to use reasonable efforts to change the jurisdiction
         of its Applicable Lending Office so as to eliminate or reduce any such
         additional payment which may thereafter accrue if such change, in the
         judgment of such Lender, is not otherwise disadvantageous to such
         Lender.

                  (g) Within 30 days after the date of any payment of Taxes,
         Borrower shall furnish to Administrative Agent the original or a
         certified copy of a receipt evidencing such payment.

                  (h) Without prejudice to the survival of any other agreement
         of Borrower hereunder, the agreements and obligations of Borrower
         contained in this SECTION 4.6 shall survive the termination of the
         Commitment and the payment in full of the Obligation.

SECTION 5 FEES.

         5.1 TREATMENT OF FEES. EXCEPT as otherwise provided by Law, the fees
described in this SECTION 5: (a) do not constitute compensation for the use,
detention, or forbearance of money, (b) are in addition to, and not in lieu of,
interest and expenses otherwise described in this Agreement, (c) shall be
payable in accordance with SECTION 3.1, (d) shall be non-refundable, (e) shall,
to the fullest extent permitted by Law, bear interest, if not paid when due, at
the Default Rate, and (f) shall be calculated on the basis of actual number of
days (including the first day but excluding the last day) elapsed, but computed
as if each calendar year consisted of 360 days, UNLESS such computation would
result in interest being computed in excess of the Maximum Rate in which event
such computation shall be made on the basis of a year of 365 or 366 days, as the
case may be.

         5.2 ADMINISTRATIVE AND UP-FRONT FEES. Borrower shall pay Administrative
Agent and each Lender, as the case may be, solely for their respective accounts,
the fees described in that certain separate letter agreement dated as of
September 13, 1999.

         5.3 LC FEES. Borrower shall pay to Administrative Agent, for the
ratable benefit of Lenders, in accordance with their respective Pro Rata Parts,
a fee for each LC, payable in installments in arrears, SO LONG as such LC
remains outstanding. Such installments shall be paid for the period from and
including the date of issuance of the applicable LC, to but excluding the next
quarterly payment date (as hereinafter specified), and thereafter for the period
from and including such quarterly payment date to but excluding the next
quarterly payment date or (if earlier) the expiry date of such LC. Such
installments shall be paid on each March 31, June 30, September 30, and December
31. Each such installment shall be in an amount equal to the product of (a) the
Applicable Margin for Eurodollar Rate Borrowings in effect on the date of
payment of such fee (and applied on a per annum basis) MULTIPLIED BY (b) the
face amount of such LC, and pro rated (in accordance with SECTION 5.1(f)) for
the period for which such installment is due.

         5.4 LC ISSUANCE AND FRONTING FEES. Borrower shall pay Administrative
Agent, as the issuer of LCs and for the individual account of Administrative
Agent, an LC issuance and fronting fee for each LC,

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<PAGE>

payable in installments in arrears, SO LONG AS such LC remains outstanding.
Such installments shall be paid for the period from and including the date of
issuance of the applicable LC, to but excluding the next quarterly payment
date (as hereinafter specified), and thereafter for the period from and
including such quarterly payment date to but excluding the next quarterly
payment date or (if earlier) the expiry date of such LC. Such installments
shall be paid on each March 31, June 30, September 30, and December 31. Each
such installment shall be in an amount equal to the product of (a) 0.125% per
annum MULTIPLIED BY (b) the face amount of such LC, and pro rated (in
accordance with SECTION 5.1(f)) for the period for which such installment is
due. In addition, Borrower shall pay to Administrative Agent, for its
individual account, standard administrative charges for LC amendments
provided for in SECTION 2.2(c).

         5.5 COMMITMENT FEES. Following the Closing Date, Borrower shall pay to
Administrative Agent, for the ratable account of Lenders, a commitment fee
("COMMITMENT FEE"), payable in installments in arrears, on each March 31, June
30, September 30, and December 31, and on the Termination Date, commencing
September 30, 1999. Each installment shall be, in an amount equal to (a) the
Applicable Margin for Commitment Fees MULTIPLIED BY (b) the amount by which (i)
the average daily Commitment exceeds (ii) the average daily Commitment Usage, in
each case during the period from and including the last payment date to and
excluding the payment date for such installment; PROVIDED THAT, each such
installment shall be calculated in accordance with SECTION 5.1(f). Any change in
the Commitment Fees due to a change in the Applicable Margin for Commitment Fees
shall be effective on the effective date of such change in the Applicable Margin
for Commitment Fees. Solely for the purposes of this SECTION 5.5, "RATABLE"
shall mean, for any period of calculation, with respect to any Lender, that
proportion which (x) the average daily unused Committed Sum of such Lender
during such period bears to (y) the amount of the average daily unused
Commitment during such period.

SECTION 6. SECURITY; GUARANTIES.

         6.1 COLLATERAL. To the extent permitted by applicable Law, to secure
full and complete payment and performance of the Obligation, (a) Borrower shall,
and shall cause all its present and future direct and indirect Subsidiaries to,
grant and convey to, and create in favor of Administrative Agent for the ratable
benefit of Lenders, first priority Liens in, to, and on all assets of the
Companies as more particularly described in the Collateral Documents, and (b)
Parent shall grant and convey to, and create in favor of Administrative Agent
for the ratable benefit of Lenders, first priority Liens in, to, and on all
capital stock of all its present and future direct Subsidiaries, including
Borrower, Dobson Telephone, and Fiber/FORTE, as more particularly described in
the Collateral Documents (collectively, the "COLLATERAL"); PROVIDED THAT, no
Agent or any Lender hereby assumes or is made the transferee of any obligations
of any Company or any other Person regarding any of the Collateral.

         6.2 EXISTING COLLATERAL DOCUMENTS. With respect to the Collateral
Documents (as amended through the date hereof, the "EXISTING COLLATERAL
DOCUMENTS"), executed by Borrower in favor of Administrative Agent for the
ratable benefit of Lenders pursuant to the Existing Agreement, Borrower (i)
agrees that the execution and delivery of the Loan Papers shall in no way
release, diminish, impair, reduce, or otherwise affect the liens and security
interests created by the Existing Collateral Documents, (ii) acknowledges and
confirms the continuing existence and effectiveness of the Existing Collateral
Documents, and (iii) agrees that the "OBLIGATION" secured by the Existing
Collateral Documents shall include the Obligation hereunder.

         6.3 GUARANTIES. As an inducement to Agents and Lenders to enter into
this Agreement, Borrower shall cause its direct and indirect Subsidiaries to,
and Parent shall, execute and deliver to

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Administrative Agent a Guaranty substantially in the form and upon the terms
of EXHIBIT C-1, providing for the guarantee of payment and performance of the
Obligation.

         6.4 FUTURE LIENS. Promptly after (a) the acquisition of any assets
(real, personal, tangible, or intangible) by any Company, but no later than 30
days after such acquisition of assets has, or should have, been reported
pursuant to SECTION 9.3(f), (b) the removal, termination, or expiration of any
prohibitions upon the granting of a Lien in any asset (real, personal, tangible,
or intangible) of any Company, or (c) upon the designation, formation, or
acquisition of any new Subsidiary (the assets and stock of such new Subsidiary
and the assets described in CLAUSES (a) and (b) hereof are referred to herein as
the "ADDITIONAL ASSETS"), Borrower shall (or shall cause such other Company to)
execute and deliver to Administrative Agent all further instruments and
documents (including, without limitation, Collateral Documents and all
certificates and instruments representing shares of stock or evidencing Debt and
any realty appraisals as Administrative Agent may require with respect to any
such Additional Assets), and shall take all further action that may be necessary
or desirable, or that Administrative Agent may reasonably request, to grant,
perfect, and protect Liens in favor of Administrative Agent for the benefit of
Lenders in such Additional Assets, as security for the Obligation, including,
without limitation, any Landlord Consent and Estoppel Certificates in
substantially the form of EXHIBIT J that Administrative Agent may request; IT
BEING EXPRESSLY UNDERSTOOD that the granting of such additional security for the
Obligation is a material inducement to the execution and delivery of this
Agreement by each Lender. Upon satisfying the terms and conditions hereof, such
Additional Assets shall be included in the "COLLATERAL" for all purposes under
the Loan Papers, and all references to the "COLLATERAL" in the Loan Papers shall
include the Additional Assets.

         6.5 RELEASE OF COLLATERAL. Upon any sale, transfer, or disposition of
Collateral which is expressly permitted pursuant to the Loan Papers (or is
otherwise authorized by Required Lenders or Lenders, as the case may be), and
upon ten Business Days' prior written request by Borrower (which request must be
accompanied by true and correct copies of (a) all documents of transfer or
disposition, including any contract of sale, (b) a preliminary closing statement
and instructions to the title company, if any, and (c) all requested release
instruments), Administrative Agent shall (and is hereby irrevocably authorized
by Lenders to) execute such documents as may be necessary to evidence the
release of Liens granted to Administrative Agent for the benefit of Lenders
pursuant hereto in such Collateral; PROVIDED THAT, (i) no such release of Lien
shall be granted if any Default or Potential Default has occurred and is
continuing, including, without limitation, the failure to make certain mandatory
prepayments in accordance with SECTIONS 2.3(c) and 3.3 in conjunction with the
sale or transfer of such Collateral; (ii) Administrative Agent shall not be
required to execute any such document on terms which, in Administrative Agent's
opinion, would expose Administrative Agent to liability or create any obligation
or entail any consequence OTHER THAN the release of such Liens without recourse
or warranty; and (iii) such release shall not in any manner discharge, affect,
or impair the Obligation, or Liens upon (or obligations of any Company in
respect of) all interests retained by the Companies, including (without
limitation) the proceeds of any sale, all of which shall continue to constitute
Collateral.

         6.6 NEGATIVE PLEDGE. To the extent Administrative Agent and Required
Lenders agree to delay, for whatever reason, the perfection or attachment of any
Lien granted pursuant to SECTION 6.1, including, without limitation Liens on the
assets described on SCHEDULE 6.6, the Companies hereby covenant and agree not to
directly create, incur, grant, suffer, or permit to be created or incurred any
Lien on any such assets, OTHER THAN Permitted Liens; IT BEING EXPRESSLY
UNDERSTOOD that the provisions of this negative pledge are a material inducement
to the execution and delivery of this Agreement by each Lender.

         6.7 DCCLP GUARANTY. As an inducement to Agents and Lenders to enter
into this Agreement, DCCLP shall execute and deliver to Administrative Agent the
DCCLP Limited Guaranty (substantially in the form and upon the terms of EXHIBIT
C-2), guaranteeing up to $50,000,000 of the Obligation; PROVIDED THAT, if no
Default or Potential Default then exists or arises, (i) the amount of the
Obligation guaranteed by

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DCCLP under the DCCLP Limited Guaranty may be reduced to $20,000,000 on the
First Capital Date, and (ii) the DCCLP Limited Guaranty may terminate on the
Second Capital Date.

         6.8 CAPITAL CONTRIBUTION AGREEMENT. DCCLP, Logix, Parent, and
Administrative Agent (on behalf of Lenders) shall enter into a Capital
Contribution Agreement (substantially in the form and upon the terms of EXHIBIT
C-3) providing for, among other things, (i) Parent's agreement to make certain
Capital Contributions to Logix in an aggregate amount of up to $20,000,000 upon
the occurrence of certain events described in the Capital Contribution
Agreement; which Capital Contributions shall be in increments of at least
$5,000,000 and, once commenced to be paid, shall continue to be contributed to
Borrower no less frequently than every 60 days, (ii) DCCLP's agreement to lend
up to $20,000,000 to Parent to facilitate Parent's obligations to make the
Capital Contributions described in CLAUSE (i) preceding, and (iii) the
subordination of the loan from DCCLP to Parent to the prior payment and
performance of Parent's obligations under the Loan Papers.

         6.9 CONTROL; LIMITATION OF RIGHTS. Notwithstanding anything herein or
in any other Loan Paper to the contrary, (a) the transactions contemplated
hereby (i) do not and will not constitute, create, or have the effect of
constituting or creating, directly or indirectly, actual or practical ownership
of the Companies by Agents or Lenders, or control, affirmative or negative,
direct or indirect, by Agents or Lenders over the management or any other aspect
of the operation of the Companies, which ownership or control remains
exclusively and at all times in the Companies, and (ii) do not and will not
constitute the transfer, assignment, or disposition in any manner, voluntary or
involuntary, directly or indirectly, of any Authorization at any time issued by
the FCC or any PUC to the Companies, or the transfer of control of the Companies
within the meaning of SECTION 310(d) of the Communications Act; and (b)
Administrative Agent shall not, without first obtaining the approval of the FCC
or any applicable PUC, take any action pursuant to this Agreement or any other
Loan Paper that would constitute or result in any assignment of any
Authorization or any change of control of the Companies, if such assignment or
change of control would require, under then existing Law (including the written
rules and regulations promulgated by the FCC or any such PUC), the prior
approval of the FCC or any such PUC.

SECTION 7 CONDITIONS PRECEDENT.

         7.1 CONDITIONS PRECEDENT TO CLOSING. This Agreement shall not become
effective, and Lenders shall not be obligated to advance any Borrowing or issue
any LC, UNLESS Administrative Agent has received all of the agreements,
documents, instruments, and other items described on SCHEDULE 7.1.

         7.2 CONDITIONS PRECEDENT TO A PERMITTED ACQUISITION. On or prior to the
consummation of any Acquisition (whether or not the purchase price for such
Acquisition is funded by Borrowings), Borrower shall have satisfied the
conditions and delivered, or caused to be delivered, to Administrative Agent,
all documents and certificates set forth on SCHEDULE 7.2 by no later than the
dates specified for satisfaction of such conditions on SCHEDULE 7.2. Promptly
upon receipt of each Permitted Acquisition Compliance Certificate and each
Permitted Acquisition Loan Closing Certificate, Administrative Agent shall
provide copies of such certificates to Lenders. All documentation delivered and
satisfaction of conditions pursuant to the requirements of SECTION 7.2 must be
satisfactory to Administrative Agent. To the extent any Borrowing is being
requested in connection with the consummation of the Acquisition, the conditions
set forth in SECTIONS 7.2 and 7.3 must be satisfied prior to the making of any
such Borrowing.

         7.3 CONDITIONS PRECEDENT TO EACH BORROWING. In addition to the
conditions stated in SECTIONS 7.1 and 7.2, Lenders will not be obligated to fund
any Borrowing, and Administrative Agent will not be obligated to issue any LC,
as the case may be, UNLESS on the date of such Borrowing (and after giving

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<PAGE>

effect thereto): (a) Administrative Agent shall have timely received therefor a
Notice of Borrowing or a Notice of LC (TOGETHER WITH the applicable LC
Agreement), as the case may be; (b) Administrative Agent shall have received, as
applicable, the LC fees provided for in SECTIONS 5.3 AND 5.4; (c) all of the
representations and warranties of any Loan Party (and, if prior to the Second
Capital Date, DCCLP) set forth in the Loan Papers are true and correct in all
material respects (EXCEPT to the extent that (i) the representations and
warranties speak to a specific date or (ii) the facts on which such
representations and warranties are based have been changed by transactions
permitted by the Loan Papers); (d) no change in the financial condition,
business operations, or prospects of any Loan Party (and, if prior to the Second
Capital Date, DCCLP) which could be a Material Adverse Event shall have
occurred; (e) no Default or Potential Default shall have occurred and be
continuing; (f) the funding of such Borrowings and issuance of such LC, as the
case may be, are permitted by Law; (g) evidence satisfactory to Administrative
Agent that such Borrowing may be made without violating the terms of the Senior
Notes; (h) in the event all or any part of the proceeds of the Borrowing will be
used to finance a loan, advance, or Distribution to Parent to the extent
permitted by SECTIONS 9.20 or 9.21, Administrative Agent shall have received all
such certifications, financial information, and projections as Administrative
Agent may reasonably request; and (i) all matters related to such Borrowing must
be satisfactory to Required Lenders and their respective counsel in their
reasonable determination, and upon the reasonable request of Administrative
Agent, Borrower shall deliver to Administrative Agent evidence substantiating
any of the matters in the Loan Papers which are necessary to enable Borrower to
qualify for such Borrowing. Each Notice of Borrowing and LC Agreement delivered
to Administrative Agent shall constitute the representation and warranty by
Borrower to Administrative Agent that the statements above are true and correct
in all respects. Each condition precedent in this Agreement is material to the
transactions contemplated in this Agreement, and time is of the essence in
respect of each thereof. Subject to the prior approval of Required Lenders,
Lenders may fund any Borrowing, and Administrative Agent may issue any LC,
without all conditions being satisfied, but, to the extent permitted by Law, the
same shall not be deemed to be a waiver of the requirement that each such
condition precedent be satisfied as a prerequisite for any subsequent funding or
issuance, UNLESS Required Lenders specifically waive each such item in writing.

         7.4 CONDITIONS PRECEDENT TO ADDITIONAL BORROWER. No Person shall become
an Additional Borrower until (a) such proposed Additional Borrower has been
approved in writing by Required Lenders and has entered into all such
supplemental agreements to the Loan Papers as are required by Administrative
Agent, (b) such Additional Borrower and each other Loan Party (and, if prior to
the Second Capital Date, DCCLP) shall have satisfied the conditions and
delivered, or caused to be delivered, to Administrative Agent, all documents and
certificates set forth on SCHEDULE 7.4 by no later than the dates specified for
satisfaction of such conditions on SCHEDULE 7.4. All documentation delivered and
satisfaction of conditions pursuant to the requirements of SECTION 7.4 must be
satisfactory to Administrative Agent. To the extent any Borrowing is being
requested in connection with any Person becoming an Additional Borrower, the
conditions set forth in SECTION 7.3 must be satisfied prior to the making of any
such Borrowing.

SECTION 8 REPRESENTATIONS AND WARRANTIES. Borrower and each other Loan
Party jointly and severally (as to themselves and their respective
Subsidiaries) represent and warrant to Administrative Agent and Lenders as
follows:

         8.1 PURPOSE OF CREDIT. Borrower will use (or will loan such proceeds to
its Companies to so use) all proceeds of Borrowings for one or more of the
following: (a) to finance Permitted Acquisitions; (b) to finance Capital
Expenditures contemplated by and incurred consistently with the Benchmark
Budget; (c) for working capital and general corporate purposes of the Companies
contemplated by and incurred consistently with the Benchmark Budget; (d) to make
certain Distributions and loans and advances to Parent to the extent permitted
by SECTIONS 9.20 and 9.21; (e) if Dobson Telephone becomes an Additional
Borrower, to repay the

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<PAGE>

RUS/RTB Debt; and (f) for other lawful general corporate purposes to the
extent consistent with the Benchmark Budget. No Company is engaged
principally, or as one of its important activities, in the business of
extending credit for the purpose of purchasing or carrying any "MARGIN STOCK"
within the meaning of REGULATION U. No part of the proceeds of any Borrowing
will be used, directly or indirectly, for a purpose which violates any Law,
including, without limitation, the provisions of REGULATIONS T, U, and X (as
enacted by the Board of Governors of the Federal Reserve System, as amended).

         8.2 EXISTENCE, GOOD STANDING, AUTHORITY, AND AUTHORIZATIONS. Each Loan
Party is duly organized, validly existing, and in good standing under the Laws
of its jurisdiction of organization (such jurisdictions being identified on
SCHEDULE 8.3, as supplemented and modified in writing from time to time to
reflect any changes to such Schedule as a result of transactions permitted by
the Loan Papers). Each Loan Party is duly qualified to transact business and is
in good standing in (i) Texas and Oklahoma and (ii) in each other jurisdiction
where the nature and extent of its business and properties require the same.
Each Loan Party possesses all Authorizations, and grants of authority,
including, without limitation, any Authorization issued by the FCC or any PUC
(all of which are described on SCHEDULE 8.2) which are necessary or required in
the conduct of its respective business(es), and the same are valid, binding,
enforceable, and subsisting without any defaults thereunder or enforceable
adverse limitations thereon and are not subject to any proceedings or claims
opposing the issuance, development, or use thereof, or contesting the validity
thereof, EXCEPT where failure could not be a Material Adverse Event.

         8.3 SUBSIDIARIES; CAPITAL STOCK. The Loan Parties have no Subsidiaries
EXCEPT as disclosed on SCHEDULE 8.3 (as supplemented and modified in writing
from time to time to reflect any changes to such Schedule as a result of
transactions permitted by the Loan Papers). All of the outstanding shares of
capital stock (or similar voting interests) of each Subsidiary are duly
authorized, validly issued, fully paid, and nonassessable and are owned of
record and beneficially as set forth on SCHEDULE 8.3 (as supplemented and
modified in writing from time to time to reflect any changes to such Schedule as
a result of transactions permitted by the Loan Papers), free and clear of any
Liens, restrictions, claims, or rights of another Person, OTHER THAN Permitted
Liens, and none of such shares owned by any Party is subject to any restriction
on transfer thereof EXCEPT for restrictions imposed by securities Laws and
general corporate Laws. No Loan Party has outstanding any warrant, option, or
other right of any Person to acquire any of its capital stock or similar equity
interests.

         8.4 AUTHORIZATION AND CONTRAVENTION. The execution and delivery by each
Loan Party of each Loan Paper to which it is a party and the performance by such
Loan Party of its obligations thereunder (a) are within the corporate or
partnership power of such Loan Party, (b) will have been duly authorized by all
necessary corporate or partnership action on the part of such Loan Party when
such Loan Paper is executed and delivered, (c) require no Authorization, waiver,
formal exemption from, or other action by or in respect of, or filing with, any
Governmental Authority, which action or filing has not been taken or made on or
prior to the Closing Date (or if later, the date of execution and delivery of
such Loan Paper), EXCEPT such actions which if not taken could not be a Material
Adverse Event, (d) will not violate any provision of the charter, bylaws, or
partnership agreement of such Loan Party, (e) will not violate any provision of
Law applicable to it, OTHER THAN such violations which individually or
collectively could not be a Material Adverse Event, (f) will not violate any
material written or oral agreements, contracts, commitments, or understandings
to which it is a party, OTHER THAN such violations which could not be a Material
Adverse Event, or (g) will not result in the creation or imposition of any Lien
on any asset of any Loan Party, OTHER THAN as contemplated by this Agreement.
The Companies have (or will have upon consummation thereof) all necessary
Authorizations, exemptions, filings, declarations, regulations, consents, and
approvals of any Person or Governmental Authority required to be obtained in
order to effect any Permitted Acquisition, asset transfer, change of control,
merger, or consolidation permitted by the Loan Papers, EXCEPT those consents,
approvals,

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<PAGE>

Authorizations, exemptions, filings, declarations, or registrations, the
failure of which to obtain would not be a Material Adverse Event and would
not reasonably be expected to impair the value of the Companies or the
benefit to be derived from any such transaction.

         8.5 BINDING EFFECT. Upon execution and delivery by all parties thereto,
each Loan Paper will constitute a legal, valid, and binding obligation of each
Loan Party thereto, enforceable against each such Loan Party in accordance with
its terms, EXCEPT as enforceability may be limited by applicable Debtor Relief
Laws and general principles of equity.

         8.6 FINANCIAL STATEMENTS. The Current Financials were prepared in
accordance with GAAP and present fairly, in all material respects, the
consolidated financial condition, results of operations, and cash flows of the
Parent and its Subsidiaries, the Logix Group, Dobson Telephone and its
Subsidiaries, the Fiber Business, and the CLEC Business, as the case may be, as
of and for the portion of the fiscal year ending on the date or dates thereof
(subject only to normal year-end audit adjustments). There were no material
liabilities, direct or indirect, fixed or contingent, of Parent or any
Subsidiary of Parent, Logix or any Subsidiary of Logix, or Dobson Telephone or
any Subsidiary of Dobson Telephone, as of the date or dates of their respective
Current Financials which are required under GAAP to be reflected therein or in
the notes thereto, and are not so reflected. EXCEPT for transactions directly
related to, or specifically contemplated by, the Loan Papers, there have been no
changes in the consolidated financial condition of Parent or any Subsidiary of
Parent, Logix or any Subsidiary of Logix, Dobson Telephone or any Subsidiary of
Dobson Telephone, the Fiber Business, or the CLEC Business from that shown in
their respective Current Financials after such date which could be a Material
Adverse Event, nor has Parent, any Subsidiary of Parent, Logix, any Subsidiary
of Logix, Dobson Telephone, or any Subsidiary of Dobson Telephone incurred any
liability (including, without limitation, any liability under any Environmental
Law), direct or indirect, fixed or contingent, after such date which could be a
Material Adverse Event.

         8.7 LITIGATION, CLAIMS, INVESTIGATIONS. No Loan Party is subject to, or
aware of the threat of, any Litigation which is reasonably likely to be
determined adversely to any Loan Party, and, if so adversely determined, could
(individually or collectively with other Litigation) be a Material Adverse
Event. There are no outstanding orders or judgments for the payment of money in
excess of $1,000,000 (individually or collectively) or any warrant of
attachment, sequestration, or similar proceeding against the assets of any Loan
Party having a value (individually or collectively) of $1,000,000 or more which
is not either (a) stayed on appeal or (b) being diligently contested in good
faith by appropriate proceedings and adequate reserves have been set aside on
the books of such Loan Party in accordance with GAAP. There are no formal
complaints, suits, claims, investigations, or proceedings initiated at or by any
Governmental Authority pending or threatened by or against any Loan Party, or
which could be a Material Adverse Event, nor any judgments, decrees, or orders
of any Governmental Authority outstanding against any Loan Party that could be a
Material Adverse Event.

         8.8 TAXES. All Tax returns of each Loan Party required to be filed have
been filed (or extensions have been granted) prior to delinquency, and all Taxes
imposed upon each Loan Party which are due and payable have been paid prior to
delinquency, OTHER THAN Taxes for which the criteria for Permitted Liens (as
specified in SECTION 9.13(b)(vi)) have been satisfied or for which nonpayment
thereof could not constitute a Material Adverse Event.

         8.9 ENVIRONMENTAL MATTERS. No Loan Party (a) knows of any environmental
condition or circumstance, such as the presence or Release of any Hazardous
Substance, on any property presently or previously owned by any Loan Party that
could be a Material Adverse Event, (b) knows of any violation by any Loan Party
of any Environmental Law, EXCEPT for such violations that could not be a
Material Adverse

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Event, or (c) knows that any Loan Party is under any obligation to remedy any
violation of any Environmental Law, EXCEPT for such obligations that could
not be a Material Adverse Event; PROVIDED, HOWEVER, that each Loan Party (x)
to the best of its knowledge, has in full force and effect all environmental
permits, licenses, and approvals required to conduct its operations and is
operating in substantial compliance thereunder, and (y) has taken prudent
steps to determine that its properties and operations are not in violation of
any Environmental Law.

         8.10 EMPLOYEE BENEFIT PLANS. (a) No Employee Plan has incurred an
accumulated funding deficiency, as defined in SECTION 302 of ERISA and SECTION
412 of the Code, (b) neither Parent nor Borrower nor any ERISA Affiliate has
incurred material liability which is currently due and remains unpaid under
TITLE IV of ERISA to the PBGC or to an Employee Plan in connection with any such
Employee Plan, (c) neither Parent nor Borrower nor any ERISA Affiliate has
withdrawn in whole or in part from participation in a Multiemployer Plan, (d)
neither Parent nor Borrower has engaged in any "PROHIBITED TRANSACTION" (as
defined in SECTION 406 of ERISA or SECTION 4975 of the Code) which would be a
Material Adverse Event, and (e) no Reportable Event has occurred which is likely
to result in the termination of an Employee Plan. The present value of all
benefit liabilities within the meaning of TITLE IV of ERISA under each Employee
Plan (based on those actuarial assumptions used to fund such Employee Plan) did
not, as of the last annual valuation date for the 1998 plan year of such Plan,
exceed the value of the assets of such Employee Plan, and the total present
values of all benefit liabilities within the meaning of TITLE IV of ERISA of all
Employee Plans (based on the actuarial assumptions used to fund each such Plan)
did not, as of the respective annual valuation dates for the 1998 plan year of
each such Plan, exceed the value of the assets of all such plans. The present
value of accrued benefits under each Employee Plan (based on PBGC actuarial
assumptions used for plan termination) does not exceed the value of the assets
of such Employee Plan.

         8.11 PROPERTIES; LIENS. Each Loan Party has good and marketable title
to all its property reflected on the Current Financials, EXCEPT (a) for (i)
property that is obsolete, (ii) property that has been disposed of in the
ordinary course of business, or (iii) property with title defects or failures in
title which, when considered in the aggregate, would not be a Material Adverse
Event, or (b) as otherwise permitted by the Loan Papers. Notwithstanding any
terms in that certain agreement entered into on or about March 9, 1990, between
AT&T Communications, Inc., and Dobson Fiber Company, Inc., to the contrary,
Logix has good and marketable title to the fiber-optic cable described in that
agreement without the need for any conveyance of title or further agreement or
action by AT&T or otherwise. As of the Closing Date, no less than sixty-five
percent of the revenues of Logix are generated from the Houston, Texas, market.
EXCEPT for Permitted Liens, there is no Lien on any property of any Loan Party,
and the execution, delivery, performance, or observance of the Loan Papers will
not require or result in the creation of any Lien on such property. The CLEC
Business utilizes the fiber-optic cable extending from Amarillo, Texas, to
Oklahoma City, Oklahoma in its operations.

         8.12 GOVERNMENT REGULATIONS. No Loan Party is subject to regulation
under the INVESTMENT COMPANY ACT OF 1940, as amended, the PUBLIC UTILITY HOLDING
COMPANY ACT OF 1935, as amended, or any other Law (OTHER THAN REGULATIONS T, U,
and X of the Board of Governors of the Federal Reserve System and the
requirements of any PUC or public service commission) which regulates the
incurrence of Debt.

         8.13 TRANSACTIONS WITH AFFILIATES. EXCEPT as permitted in SECTION 9.14,
no Loan Party is a party to a material transaction with any of its Affiliates
(excluding transactions between or among Companies), OTHER THAN transactions in
the ordinary course of business and upon fair and reasonable terms not
materially less favorable than such Loan Party could obtain or could become
entitled to in an arm's-length transaction with a Person that was not its
Affiliate.

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<PAGE>

         8.14 DEBT. No Company is an obligor on any Debt OTHER THAN Permitted
Debt. Parent is not an obligor on any Debt, OTHER THAN Debt disclosed in its
audited Financial Statements for fiscal year ended December 31, 1998, which
Financial Statements were delivered to Lenders on or prior to the Closing Date.
As of the Closing Date, the outstanding principal amount of the RUS/RTB Debt
does not exceed $37,500,000.

         8.15 MATERIAL AGREEMENTS; MANAGEMENT AGREEMENTS. SCHEDULE 8.15 sets
forth a list of all Material Agreements, and there exists no material default
under any of such contracts. There are no failures of any material written or
oral agreements, contracts, commitments, or understandings to which any Loan
Party is a party to be in full force and effect which could be a Material
Adverse Event, and no default or potential default exists on the part of any
Loan Party thereunder which could be a Material Adverse Event. No Loan Party is
a party to any management or consulting agreement for the provision of services
to it, EXCEPT as described on SCHEDULE 8.15.

         8.16 INSURANCE. Each Loan Party maintains, with financially sound,
responsible, and reputable insurance companies or associations, insurance
concerning its properties and businesses against such casualties and
contingencies and of such types and in such amounts (and with co-insurance and
deductibles) as is customary in the case of same or similar businesses.

         8.17 LABOR MATTERS. There are no actual or threatened strikes, labor
disputes, slow downs, walkouts, or other concerted interruptions of operations
by the employees of any Loan Party that could be a Material Adverse Event. Hours
worked by and payment made to employees of the Loan Parties have not been in
violation of the FAIR LABOR STANDARDS ACT or any other applicable Law dealing
with such matters, OTHER THAN any such violations, individually or collectively,
which could not constitute a Material Adverse Event. All payments due from any
Loan Party on account of employee health and welfare insurance have been paid or
accrued as a liability on its books, OTHER THAN any such nonpayments which could
not, individually or collectively, constitute a Material Adverse Event.

         8.18 SOLVENCY. At the time of each Borrowing hereunder, and on the
dates of each Permitted Acquisition, each Loan Party is (and after giving effect
to the transactions contemplated by the Loan Papers, any Permitted Acquisition,
and any incurrence of additional Debt, will be) Solvent.

         8.19 INTELLECTUAL PROPERTY. Each Company owns or has sufficient and
legally enforceable rights to use all material licenses, patents, patent
applications, copyrights, service marks, trademarks, trademark applications, and
trade names necessary to continue to conduct its businesses as heretofore
conducted by it, now conducted by it, and now proposed to be conducted by it. A
list of all the intellectual property rights of each Company is set forth in
ANNEX B to each Security Agreement executed by such Company pursuant to the Loan
Papers. Each Company is conducting its business without infringement or claim of
infringement of any license, patent, copyright, service mark, trademark, trade
name, trade secret, or other intellectual property right of others, OTHER THAN
any such infringements or claims which, if successfully asserted against or
determined adversely to any Company, could not, individually or collectively,
constitute a Material Adverse Event, EXCEPT as described on SCHEDULE 8.19.

         8.20 COMPLIANCE WITH LAWS. No Loan Party is in violation of any Laws
(including, without limitation, the Communications Act, Environmental Laws, and
those Laws administered by the FCC and any PUC), OTHER THAN such violations
which could not, individually or collectively, be a Material Adverse Event. No
Loan Party has received notice alleging any noncompliance with any Laws, EXCEPT
for such noncompliance which no longer exists, or which could not constitute a
Material Adverse Event.

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         8.21     PERMITTED ACQUISITIONS.

                  (a) VALIDITY. With respect to any Permitted Acquisitions, each
         Company party thereto has the power and authority under the Laws of its
         state of incorporation and under its articles of incorporation and
         bylaws or partnership agreement, as applicable, to enter into and
         perform the related Acquisition agreement to which it is a party and
         all other agreements, documents, and actions required thereunder; and
         all actions (corporate or otherwise) necessary or appropriate by such
         Companies (as the case may be) for the execution and performance of
         said Acquisition agreements, and all other documents, agreements, and
         actions required thereunder, have been taken, and, upon their
         execution, such Acquisition agreements will constitute the valid and
         binding obligation of the Companies party thereto, enforceable in
         accordance with their respective terms.

                  (b) NO VIOLATIONS. With respect to any Permitted Acquisition,
         the making and performance of the related Acquisition agreements, and
         all other agreements, documents, and actions required thereunder, will
         not violate any provision of any Law, including, without limitation,
         all state corporate Laws and judicial precedents of the states of
         incorporation or formation of the Companies, and will not violate any
         provisions of the articles of incorporation and bylaws or partnership
         agreements of the Companies, or constitute a default under any
         agreement by which any Company or its respective property may be bound.

         8.22 REGULATION U. "MARGIN STOCK" (as defined in REGULATION U)
constitutes less than 25% of those assets of any Loan Party which is subject to
any limitation on sale, pledge, or other restrictions hereunder.

         8.23 TRADENAMES. EXCEPT as disclosed on SCHEDULE 8.23, no Loan Party
has used or transacted business under any other corporate or trade name in the
five-year period preceding the date hereof.

         8.24 YEAR 2000 COMPLIANCE. The Loan Parties have (i) initiated a review
and assessment of all areas within their business and operations that could be
adversely affected by the "YEAR 2000 PROBLEM" (that is, the risk that computer
applications used by the Loan Parties may be unable to recognize and perform
properly date-sensitive functions involving certain dates prior to and any date
after December 31, 1999), (ii) developed a plan and time line for addressing the
Year 2000 Problem on a timely basis, and (iii) to date, implemented in all
material respects that plan in accordance with that timetable.

         8.25 NO DEFAULT. No Default or Potential Default exists or will arise
as a result of any Borrowing hereunder.

         8.26 FULL DISCLOSURE. There is no material fact or condition relating
to the Loan Papers or the financial condition, business, or property of any Loan
Party or their respective Subsidiaries which could be a Material Adverse Event
and which has not been related, in writing, to Administrative Agent. All
information heretofore furnished by any Company to any Lender or Administrative
Agent in connection with the Loan Papers was, and all such information hereafter
furnished by any Company to any Lender or Administrative Agent will be, true and
accurate in all material respects or based on reasonable estimates on the date
as of which such information is stated or certified.

         8.27 SENIOR NOTES. Parent has used proceeds of the Senior Notes solely
for the following purposes: Capital Contributions to Logix, the purchase of the
Pledged Government Securities, and the payment of fees and expenses incurred in
connection with the issuance of the Senior Notes.

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         8.28 BENCHMARK BUDGET. The Benchmark Budget for each Loan Party has
been prepared for the period from the Closing Date through the Termination Date
(the "REPORTED PERIOD") and includes (i) projected revenues for each calendar
month during the Reported Period and (ii) all estimated costs and expenses
during each calendar month in the Reported Period which are incident directly or
indirectly to the construction, development, and operation of the Fiber
Business, the CLEC Business, or the rural telephone business of Dobson Telephone
(as the case may be). After taking into account the requirements of the Loan
Papers, the Benchmark Budget for the CLEC Business includes all costs and
expenses incident to the construction, development, and operation of fiber optic
telecommunications systems to be owned and operated by the Logix Group as a
competitive local exchange carrier in designated metropolitan areas. Each
Benchmark Budget has been prepared by the appropriate entity based on
assumptions which have been disclosed to Lenders and which, in light of
historical performance of such entity and its Subsidiaries and their prospects
for the future, are realistic and achievable.

SECTION 9    COVENANTS. Each of Loan Party covenants, and agrees, (and agrees to
cause its ERISA Affiliates with respect to SECTION 9.10) to perform, observe,
and comply with each of the following covenants, from the Closing Date and SO
LONG THEREAFTER AS Lenders are committed to fund Borrowings and Administrative
Agent is committed to issue LCs under this Agreement and thereafter until the
payment in full of the Principal Debt (and termination of outstanding LCs, if
any) and payment in full of all other interest, fees, and other amounts of the
Obligation then due and owing, UNLESS Borrower receives a prior written consent
to the contrary by Administrative Agent as authorized by Required Lenders:

         9.1 USE OF PROCEEDS. Each Borrower shall use (and shall cause each
other Company to use) the proceeds of Borrowings only for the purposes
represented herein and, where required, in a manner contemplated by, and
consistent with, the applicable Benchmark Budget.

         9.2 BOOKS AND RECORDS. Parent and the Companies shall maintain books,
records, and accounts necessary to prepare financial statements in accordance
with GAAP.

         9.3 ITEMS TO BE FURNISHED. Parent and each Borrower shall cause the
following to be furnished to Administrative Agent for delivery to Lenders:

                  (a) Promptly after preparation, and (UNLESS otherwise
         specified) no later than 90 days after the last day of each fiscal year
         of Parent, Logix, Dobson Telephone, and each other Additional Borrower,
         Financial Statements showing the consolidated (and, in the case of
         Parent and its Subsidiaries, EXCEPT with respect to the cash flow
         statements, consolidating) financial condition and results of
         operations calculated separately for each of (w) Parent and its
         Subsidiaries, (x) the Logix Group (including separate balance sheets
         and statements of operations for each of the Fiber Business and the
         CLEC Business, in form and substance satisfactory to Agents), (y)
         Dobson Telephone and its Subsidiaries, and (z) each Additional Borrower
         and its Subsidiaries as of, and for the year ended on, such day, each
         accompanied by:

                           (i) the unqualified opinion of a firm of
                  nationally-recognized independent certified public
                  accountants, based on an audit using generally accepted
                  auditing standards, that the Financial Statements calculated
                  with respect to Parent and its Subsidiaries were prepared in
                  accordance with GAAP and present fairly the consolidated
                  financial condition and results of operations of Parent and
                  its Subsidiaries;

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                           (ii) any management letter prepared by such
                  accounting firm (PROVIDED THAT, such letter shall be furnished
                  to Administrative Agents when received, but in no event later
                  than 150 days after the last day of the applicable fiscal
                  year);

                           (iii) a certificate from such accounting firm to
                  Administrative Agent, indicating that during its audit it
                  obtained no knowledge of any Default or Potential Default or,
                  if it obtained such knowledge, the nature and period of
                  existence thereof; and

                           (iv) with respect to the Financial Statements of
                  Parent, The Logix Group, Dobson Telephone and its
                  Subsidiaries, and each Additional Borrower delivered pursuant
                  to this SECTION 9.3(a), a Compliance Certificate.

                  (b) From the Closing Date until the Phase II Notice Date,
         promptly after preparation thereof, and no later than 30 days after the
         last day of each calendar month, Financial Statements of Parent, Logix,
         Dobson Telephone, and any other Additional Borrower, showing the
         consolidated (and, in the case of Parent and its Subsidiaries, EXCEPT
         with respect to the cash flow statements, consolidating) financial
         condition and results of operations calculated for the Parent and its
         Subsidiaries, the Logix Group (including separate balance sheets and
         statements of operations for the Fiber Business and for the CLEC
         Business, in form and substance satisfactory to Agents), Dobson
         Telephone and its Subsidiaries, and each other Additional Borrower and
         its Subsidiaries (as the case may be), for such calendar month and for
         the period from the beginning of the then-current fiscal year to, such
         last day, accompanied by a (y) Compliance Certificate with respect to
         such Financial Statements, executed by a Responsible Officer of Parent,
         Logix, Dobson Telephone, and each Additional Borrower (if any).

                  (c) Promptly after preparation, and no later than 45 days
         after the last day of each of the first three fiscal quarters of each
         fiscal year of Parent, Logix, Dobson Telephone, and any other
         Additional Borrower, Financial Statements showing the consolidated
         (and, in the case of Parent and its Subsidiaries, EXCEPT with respect
         to the cash flow statements, consolidating) financial condition and
         results of operations calculated for the Parent and its Subsidiaries,
         the Logix Group (including separate balance sheets and statements of
         operations for the Fiber Business and for the CLEC Business, in form
         and substance satisfactory to Agents), Dobson Telephone and its
         Subsidiaries, and each other Additional Borrower and its Subsidiaries
         (as the case may be), for such fiscal quarter and for the period from
         the beginning of the then-current fiscal year to, such last day,
         accompanied by a (y) Compliance Certificate with respect to such
         Financial Statements, executed by a Responsible Officer of Parent,
         Logix, Dobson Telephone, and each Additional Borrower (if any).

                  (d) (i) With respect to all statements of operation delivered
         pursuant to SECTION 9.3(a), (b), or (c) preceding, a comparison to the
         Benchmark Budget for each such period and an explanation of any
         variances from the applicable Benchmark Budget; and (ii) additionally,
         on or prior to March 31 of each fiscal year of Parent, Logix, Dobson
         Telephone, and any other Additional Borrower, an operating budget (in
         form and substance satisfactory to Agents) for each such entity and its
         Subsidiaries for such fiscal year (including separate operating budgets
         for the Fiber Business and for the CLEC Business), each accompanied by
         a certificate executed by a Responsible Officer of the appropriate
         entity, certifying that such operating budget was prepared by such
         entity based on assumptions which, in light of the historical
         performance of such entity and its Subsidiaries and their prospects for
         the future, are realistic and achievable; PROVIDED THAT,
         notwithstanding the delivery of such operating budgets, no Benchmark
         Budget may be amended or modified (or amounts thereunder reallocated)
         without the prior written consent of Required Lenders.

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<PAGE>

                  (e) Promptly upon receipt thereof, copies of all auditor's
         annual management letters delivered to Parent.

                  (f) Notice, promptly after Parent or any Borrower knows or has
         reason to know of (i) the existence and status of any Litigation which
         could be a Material Adverse Event, or of any order or judgment for the
         payment of money which (individually or collectively) is in excess of
         $1,000,000, or any warrant of attachment, sequestration, or similar
         proceeding against the assets of any Loan Party or Subsidiary of Parent
         having a value (individually or collectively) of $1,000,000, (ii) any
         material change in any material fact or circumstance represented or
         warranted in any Loan Paper, (iii) a Default or Potential Default
         specifying the nature thereof and what action any Loan Party (or, if
         prior to the Second Capital Date, DCCLP) has taken, is taking, or
         proposes to take with respect thereto, (iv) the receipt by any Loan
         Party or Subsidiary of Parent of any notice from any Governmental
         Authority of the expiration without renewal, termination, material
         modification, or suspension of, or institution of any proceedings to
         terminate, materially modify, or suspend, any Authorization granted by
         the FCC or any applicable PUC, or any other Authorization which any
         Loan Party or Subsidiary of Parent is required to hold in order to
         operate its business in compliance with all applicable Laws, OTHER THAN
         such expirations, terminations, suspensions, or modifications which
         individually or in the aggregate would not constitute a Material
         Adverse Event, (v) any federal, state, or local statute, regulation, or
         ordinance or judicial or administrative order limiting or controlling
         the operations of any Loan Party or Subsidiary of Parent (or, if prior
         to the Second Capital Date, DCCLP) which has been issued or adopted
         hereafter and which is of material adverse importance or effect in
         relation to the operation of any Loan Party or Subsidiary of Parent,
         (vi) the receipt by any Loan Party or Subsidiary of Parent of notice of
         any violation or alleged violation of any Environmental Law, which
         violation or alleged violation could individually or collectively with
         other such violations or allegations, constitute a Material Adverse
         Event, (vii) (A) the occurrence of a Reportable Event that, alone or
         TOGETHER WITH any other Reportable Event, could reasonably be expected
         to result in liability of any Loan Party or Subsidiary of Parent to the
         PBGC in an aggregate amount exceeding $1,000,000; (B) any expressed
         statement in writing on the part of the PBGC of its intention to
         terminate any Employee Plan or Plans; (C) any Loan Party's or their
         ERISA Affiliate's becoming obligated to file with the PBGC a notice of
         failure to make a required installment or other payment with respect to
         an Employee Plan; (D) the receipt by any Loan Party or an ERISA
         Affiliate or any Loan Party from the sponsor of a Multiemployer Plan of
         either a notice concerning the imposition of withdrawal liability in an
         aggregate amount exceeding $1,000,000 or of the impending termination
         or reorganization of such Multiemployer Plan; or (E) the occurrence of
         any condition (under ERISA, the Code, or otherwise) for the imposition
         of a Lien in favor of the PBGC on the assets of any Loan Party; or
         (viii) any material, or potentially material, inaccuracy in any
         Benchmark Budget.

                  (g) Promptly (but in no event later than the last Business Day
         of the calendar month in which such change occurs) after any of the
         information or disclosures provided on any of the Schedules delivered
         pursuant to this Agreement or any annexes to any of the Collateral
         Documents becomes outdated or incorrect or requires supplementation in
         any material respect, such revised or updated Schedule(s) or annexes as
         may be necessary or appropriate to update or correct such information
         or disclosures; PROVIDED THAT, (i) no deletions may be made to any
         annexes describing Collateral in any of the Collateral Documents or to
         SCHEDULE 8.15 to this Agreement describing Material Agreements UNLESS
         approved by Required Lenders and (ii) in the case of SCHEDULES 6.6,
         8.19, 9.13, and 9.14, the information thereon shall not be deemed
         accepted for purposes of the Loan Papers and shall not become part of
         the Loan Papers unless approved by Required Lenders.

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<PAGE>

                  (h) Promptly after preparation, true, correct, and complete
         copies of all material reports or filings filed by or on behalf of any
         Loan Party or any Subsidiary of a Loan Party with any Governmental
         Authority (including the FCC and the Securities and Exchange
         Commission).

                  (i) Promptly after the filing thereof, a true, correct, and
         complete copy of each FORM 10-K, FORM 10-Q, and FORM 8-K filed by or on
         behalf of any Loan Party or any Subsidiary of a Loan Party with the
         Securities and Exchange Commission.

                  (j) Promptly upon request therefor by Administrative Agent or
         Lenders, such information (not otherwise required to be furnished under
         the Loan Papers) respecting the business affairs, assets, and
         liabilities of any Loan Party or any Subsidiary of a Loan Party
         (including, without limitation, status reports concerning progress of
         implementation of its plan for addressing the Year 2000 Problem), and
         such opinions, certifications, and documents, in addition to those
         mentioned in this Agreement, as reasonably requested.

                  (k) Promptly after preparation, and no later than 30 days
         after the last day of each calendar month (the "SUBJECT MONTH"), a
         management report (substantially in the form of EXHIBIT E-5),
         discussing the financial results, comparing actual performance results
         to the Benchmark Budget for the Subject Month and outlining principal
         changes in trends affecting each market, and separately detailing as of
         the last day of the Subject Month, among other things, (i) the total
         number of Access Lines, CLEC Resale Access Lines, CLEC UNE-P Access
         Lines, and CLEC On-Switch Access Lines; (ii) average gross margins for
         each long distance, data transmission, and local business segment;
         (iii) Operating Cash Flow for each market served by each business
         segment; (iv) sales employee turnover during such period and for the
         Subject Month from the beginning of the then-current fiscal year to
         such last day; (v) descriptions of all Capital Expenditures made during
         the Subject Month; and (vi) a status report of Companies' efforts to
         raise the necessary capital to satisfy the requirements of the First
         Capital Date and the Second Capital Date.

                  (l) Promptly after preparation, but no later than 30 days
         after the last day of each calendar month, a Borrowing Base Report.

         9.4 INSPECTIONS. Upon reasonable notice, each Loan Party shall allow
Administrative Agent or any Lender (or their respective Representatives) to
inspect any of their properties, to review reports, files, and other records and
to make and take away copies thereof, to conduct tests or investigations, and to
discuss any of their affairs, conditions, and finances with other creditors,
directors, officers, employees, other representatives, and independent
accountants of such Loan Party, from time to time, during reasonable business
hours.

         9.5 TAXES. Each Loan Party (a) shall promptly pay when due any and all
Taxes OTHER THAN Taxes the applicability, amount, or validity of which is being
contested in good faith by lawful proceedings diligently conducted, and against
which reserve or other provision required by GAAP has been made, and in respect
of which levy and execution of any Lien securing same have been and continue to
be stayed, (b) shall not, directly or indirectly, use any portion of the
proceeds of any Borrowing to pay the wages of employees UNLESS a timely payment
to or deposit with the appropriate Governmental Authorities of all amounts of
Tax required to be deducted and withheld with respect to such wages is also
made, and (c) notify Lenders immediately if the Internal Revenue Service or any
other taxing authority commences or notifies any Loan Party of its intention to
commence an audit or investigation with respect to any Taxes of any kind due or
alleged to be due from any Loan Party.

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         9.6 PAYMENT OF OBLIGATIONS. Each Borrower, jointly and severally,
agrees to pay the Obligation in accordance with the terms and provisions of the
Loan Papers. Each Loan Party (a) shall promptly pay (or renew and extend) all of
its material obligations as the same become due (unless such obligations--OTHER
THAN the Obligation--are being contested in good faith by appropriate
proceedings), and (b) shall not (i) make any voluntary prepayment of principal
of, or interest on, any other Debt (OTHER THAN the Obligation), whether
subordinate to the Obligation or not or (ii) use proceeds from the Borrowings to
make any payment or prepayment of principal of, or interest on, or sinking fund
payment in respect of any other Debt of any Loan Party, EXCEPT as permitted in
SECTIONS 9.21 and 9.22. No Loan Party shall make any payment on any subordinated
debt when it violates the subordination provisions thereof.

         9.7 MAINTENANCE OF EXISTENCE, ASSETS, AND BUSINESS. EXCEPT as otherwise
permitted by SECTION 9.25, each Loan Party shall at all times: (a) maintain its
existence and good standing in the jurisdiction of its organization and its
authority to transact business in all other jurisdictions where the failure to
so maintain its authority to transact business could be a Material Adverse
Event; (b) maintain all licenses, permits, and franchises necessary for its
business where the failure to so maintain could be a Material Adverse Event; (c)
keep all of its assets which are useful in and necessary to its business in good
working order and condition (ordinary wear and tear excepted) and make all
necessary repairs thereto and replacements thereof; and (d) do all things
necessary to obtain, renew, extend, and continue in effect all Authorizations
issued by the FCC or any applicable PUC which may at any time and from time to
time be necessary for the Loan Parties to operate their businesses in compliance
with applicable Law, where the failure to so renew, extend, or continue in
effect could be a Material Adverse Event.

         9.8 INSURANCE. The Loan Parties shall, at their sole cost and expense,
keep and maintain the Collateral owned by each such Loan Party insured for its
actual cash value against loss or damage by fire, theft, explosion, flood, and
all other hazards and risks ordinarily insured against by other owners or users
of such properties in similar businesses of comparable size and notify
Administrative Agent promptly of any occurrence causing a material loss or
decline in value of the Collateral and the estimated (or actual, if available)
amount of such loss or decline. All policies of insurance on the Collateral
shall be in a form, with such deductibles, and with insurers recognized as
adequate by prudent business Persons in the same businesses as the Loan Parties
and acceptable to Administrative Agent, and all such policies shall be in such
amount as may be satisfactory to Administrative Agent. On the Closing Date and
thereafter as each policy is renewed and extended, the Loan Parties shall
deliver to Administrative Agent a certificate of insurance for each policy of
insurance and evidence of payment of all premiums therefor. Such policies of
insurance and the certificates evidencing the same shall contain an endorsement,
in form and substance acceptable to Administrative Agent, showing loss payable
to Administrative Agent for the benefit of Lenders. Such endorsement, or an
independent instrument furnished to Administrative Agent, shall provide that the
insurance companies will give Administrative Agent at least 30 days prior
written notice before any such policy or policies of insurance shall be altered
or canceled and that no act or default of any Loan Party or any other Person
shall affect the Right of Administrative Agent to recover under such policy or
policies of insurance in case of loss or damage. Upon the payment by the insurer
of the proceeds of any such policy of insurance and if no Default has occurred
and is continuing, the Loan Party so insured may retain such insurance if such
proceeds are used to repair or replace the property the damage or destruction of
which gave rise to the payment of such insurance proceeds; PROVIDED, HOWEVER,
that any insurance proceeds not used for repair or replacement in accordance
herewith, UNLESS paid as reimbursement of expenses incurred and business losses
suffered in connection with the loss or damage to the Collateral, shall be paid
to or retained by Administrative Agent for application as a mandatory prepayment
on the Obligation.

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         9.9 PRESERVATION AND PROTECTION OF RIGHTS. Each Loan Party shall
perform such acts and duly authorize, execute, acknowledge, deliver, file, and
record any additional agreements, documents, instruments, and certificates as
Administrative Agent or Required Lenders may reasonably deem necessary or
appropriate in order to preserve and protect the Rights of Administrative Agent
and Lenders under any Loan Paper.

         9.10 EMPLOYEE BENEFIT PLANS. No Loan Party shall, directly or
indirectly, engage in any "PROHIBITED TRANSACTION" (as defined in SECTION 406 of
ERISA or SECTION 4975 of the Code), and the Loan Parties, and their respective
ERISA Affiliates shall not, directly or indirectly, (a) incur any "ACCUMULATED
FUNDING DEFICIENCY" as such term is defined in SECTION 302 of ERISA with respect
to any Employee Plan, (b) permit any Employee Plan to be subject to involuntary
termination proceedings pursuant to TITLE IV of ERISA, (c) fully or partially
withdraw from any Multiemployer Plan, if such prohibited transaction,
accumulated funding deficiency, termination proceeding, or withdrawal would
result in liability on the part of any Loan Party (individually or collectively)
in excess of $1,000,000, or (d) the occurrence of any condition for the
imposition of a Lien in favor of the PBGC on the assets of the Company.

         9.11 ENVIRONMENTAL LAWS. Each Loan Party shall (a) conduct its business
so as to comply with all applicable Environmental Laws and shall promptly take
corrective action to remedy any non-compliance with any Environmental Law, (b)
promptly investigate and remediate any known Release or threatened Release of
any Hazardous Substance on any property owned by any Loan Party or at any
facility operated by any Loan Party to the extent and degree necessary to comply
with Law and to assure that any Release or threatened Release does not result in
a substantial endangerment to human health or the environment, and (c) establish
and maintain a management system designed to ensure compliance with applicable
Environmental Laws and minimize financial and other risks to each Loan Party
arising under applicable Environmental Laws or as a result of
environmentally-related injuries to Persons or property.

         9.12 DEBT AND GUARANTIES.

                  (a) No Company shall, directly or indirectly, create, incur,
         or suffer to exist any direct, indirect, fixed, or contingent liability
         for any Debt, OTHER THAN:

                           (i)   The Obligation;

                           (ii)  Debt incurred by Borrower under any Financial
                  Hedge with any Lender or any Affiliate of Lender;

                           (iii) Trade accounts payable which are for goods
                  furnished or services rendered in the ordinary course of
                  business and are payable in accordance with customary trade
                  terms that are not more than 90 days past due;

                           (iv)  Debt between Companies; and

                           (v)   Other Debt arising not to exceed $5,000,000 in
                  the aggregate on any date of determination.

                  (b) No Company shall guarantee or assume or agree to become
         liable in any way, either directly or indirectly, for any Debt of
         others, EXCEPT (i) endorsements of checks or drafts in the ordinary
         course of business, and (ii) the obligations of the Companies under the
         Guaranties.

         9.13 LIENS.  No Company will, directly or indirectly:

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                  (a) enter into or permit to exist any arrangement or agreement
         which directly or indirectly prohibits any Company from creating or
         incurring any Lien on any of its assets, OTHER THAN the Loan Papers, or

                  (b) create, incur, or suffer or permit to be created or
         incurred or to exist any Lien upon any of its assets, EXCEPT:

                           (i)  Liens securing the Obligation;

                           (ii) Pledges or deposits made to secure payment of
                  worker's compensation, or to participate in any fund in
                  connection with worker's compensation, unemployment insurance,
                  pensions, or other social security programs;

                           (iii) Good-faith pledges or deposits made to secure
                  performance of bids, tenders, insurance or other contracts
                  (OTHER THAN for the repayment of borrowed money), or leases,
                  or to secure statutory obligations, surety or appeal bonds, or
                  indemnity, performance, or other similar bonds as all such
                  Liens arise in the ordinary course of business of the
                  Companies;

                           (iv) Encumbrances consisting of zoning restrictions,
                  easements, or other restrictions on the use of real property,
                  none of which impair in any material respect the use of such
                  property by the Person in question in the operation of its
                  business, and none of which is violated by existing or
                  proposed structures or land use;

                           (v) Liens of landlords or of mortgagees of landlords,
                  arising solely by operation of law, on fixtures and movable
                  property located on premises leased in the ordinary course of
                  business; and

                           (vi) The following, SO LONG AS the validity or amount
                  thereof is being contested in good faith and by appropriate
                  and lawful proceedings diligently conducted, reserve or other
                  appropriate provisions (if any) required by GAAP shall have
                  been made, levy and execution thereon have been stayed and
                  continue to be stayed, and they do not in the aggregate
                  materially detract from the value of the property of the
                  Person in question, or materially impair the use thereof in
                  the operation of its business: (A) claims and Liens for Taxes
                  (OTHER THAN Liens relating to Environmental Laws or ERISA);
                  (B) claims and Liens upon, and defects of title to, real or
                  personal property, including any attachment of personal or
                  real property or other legal process prior to adjudication of
                  a dispute of the merits; and (C) claims and Liens of
                  mechanics, materialmen, warehousemen, carriers, landlords, or
                  other like Liens.

         9.14 TRANSACTIONS WITH AFFILIATES. EXCEPT as set forth on SCHEDULE
9.14, no Loan Party shall enter into any material transaction with any of its
Affiliates (excluding transactions among or between Loan Parties), OTHER THAN
(a) transactions in the ordinary course of business and upon fair and reasonable
terms not materially less favorable than such Loan Party could obtain or could
become entitled to in an arm's-length transaction with a Person that was not its
Affiliate, or (b) transactions between the Loan Parties on terms of the kind
customarily employed to allocate charges among members of a consolidated group
of entities, in each such case, that are fair and reasonable to the Loan
Parties, PROVIDED THAT, with respect to such transactions permitted in CLAUSE
(b), the aggregate consideration for such transactions for all Loan Parties does
not exceed $1,000,000 in any calendar year.

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         9.15 COMPLIANCE WITH LAWS AND DOCUMENTS. No Loan Party shall violate
the provisions of any Laws applicable to it, including, without limitation, all
rules and regulations promulgated by the FCC or any applicable PUC, or any
material written or oral agreement, contract, commitment, or understanding to
which it is a party, if such violation alone, or when aggregated with all other
such violations, could be a Material Adverse Event; no Loan Party shall violate
the provisions of its charter, bylaws, or partnership agreement, or modify,
repeal, replace, or amend any provision of its charter, bylaws, or partnership
agreement, if such action could adversely affect the Rights of Lenders.

         9.16 PERMITTED ACQUISITIONS, SUBSIDIARY GUARANTIES, AND COLLATERAL
DOCUMENTS. In connection with each Permitted Acquisition, Borrower shall
deliver, or cause to be delivered to, Administrative Agent each of the items
described on SCHEDULE 7.2, on or before the date specified on such Schedule for
each such item. Borrower shall cause each Subsidiary that becomes a Subsidiary
of any Company after the Closing Date (whether as a result of acquisition,
merger, creation, or otherwise), (a) to execute a Guaranty on the date such
entity becomes a Subsidiary of a Company and promptly deliver (but in no event
later than ten days following consummation of such creation, acquisition, or
merger) such Guaranty to Administrative Agent and (b) to execute and deliver to
Administrative Agent all required Collateral Documents creating Liens in favor
of Administrative Agent on all the assets of such Subsidiary.

         9.17 ASSIGNMENT. No Loan Party shall assign or transfer any of its
Rights, duties, or obligations under any of the Loan Papers.

         9.18 FISCAL YEAR AND ACCOUNTING METHODS. No Loan Party will change its
fiscal year for book accounting purposes or its method of accounting, OTHER THAN
(a) immaterial changes in methods or as required by GAAP, or (b) in connection
with a Permitted Acquisition, such changes to the newly-acquired entity so as to
conform its fiscal year and its method of accounting to those of the Companies.

         9.19 GOVERNMENT REGULATIONS. No Loan Party will conduct its business in
such a way that it will become subject to regulation under the INVESTMENT
COMPANY ACT OF 1940, as amended, the PUBLIC UTILITY HOLDING COMPANY ACT OF 1935,
as amended, or any other Law (OTHER THAN REGULATIONS T, U, and X of the Board of
Governors of the Federal Reserve System and the requirements of any PUC or
public service commission) which regulates the incurrence of Debt.

         9.20 LOANS, ADVANCES, AND INVESTMENTS. No Company shall make any loan,
advance, extension of credit, or capital contribution to, make any investment
in, or purchase or commit to purchase any stock or other securities or evidences
of Debt of, or interests in, any other Person, OTHER THAN:

                  (a) Cash Equivalents;

                  (b) Permitted Acquisitions;

                  (c) Trade accounts receivable which are for goods furnished or
         services rendered in the ordinary course of business and are payable in
         accordance with customary trade terms; and

                  (d) Loans, advances, extensions of credit, capital
         contributions, and other investments between Loan Parties or to any
         "RESTRICTED SUBSIDIARY" (as such term is defined in the Senior Notes)
         of Parent; PROVIDED THAT, no such loans, advances, extensions of
         credit, capital contributions, or investments to Parent or any such
         Restricted Subsidiary of Parent (OTHER THAN the Companies) may be made
         if a Potential Default or Default then exists or arises as a result of
         any failure to make

                                       55

<PAGE>

         required payments (whether by its terms, by acceleration, or
         otherwise) under, or any noncompliance with any financial covenant
         in, any Loan Paper.

         9.21 DISTRIBUTIONS. No Loan Party may directly or indirectly declare,
make, or pay any Distribution, OTHER THAN:

                  (a) Distributions  declared,  made, or paid by Parent or
         any Borrower  wholly in the form of its capital stock;

                  (b) Distributions to another Loan Party or to any "RESTRICTED
         SUBSIDIARY" (as such term is defined in the Senior Notes) of Parent;
         PROVIDED THAT, no such Distributions to Parent or any such Restricted
         Subsidiary of Parent (OTHER THAN the Companies) may be made if a
         Potential Default or Default then exists or arises as a result of any
         failure to make required payments (whether by its terms, by
         acceleration, or otherwise) under, or any noncompliance with any
         financial covenant in, any Loan Paper; or

                  (c) The repurchase of non-voting stock or equity securities of
         Parent upon the termination, death, disability, or retirement of any
         employee of any Loan Party, SO LONG AS the amount paid by all Loan
         Parties for such stock repurchases consummated on or after the Closing
         Date shall not exceed $1,000,000 in the aggregate.

Notwithstanding the foregoing, Distributions are permitted hereunder only to the
extent such Distribution is made in accordance with applicable Law and
constitutes a valid, non-voidable transaction.

         9.22 RESTRICTIONS ON SUBSIDIARIES. No Subsidiary of any Borrower or of
any Guarantor (OTHER THAN DCCLP) shall enter into or permit to exist any
material arrangement or agreement (OTHER THAN the Loan Papers and the Senior
Notes) which directly or indirectly prohibits any such Subsidiary from (a)
declaring, making, or paying, directly or indirectly, any Distribution to
Borrower or any other Company, (b) paying any Debt owed to Borrower or any other
Company, (c) making loans, advances, or investments to Borrower or any other
Company, or (d) transferring any of its property or assets to Borrower or any
other Company.

         9.23 SALE OF ASSETS. No Company shall sell, assign, transfer, or
otherwise dispose of any of its assets, OTHER THAN (a) sales of inventory in the
ordinary course of business, (b) the sale, discount, or transfer of delinquent
accounts receivable in the ordinary course of business for purposes of
collection, (c) occasional sales of immaterial assets for consideration not less
than the fair market value thereof, (d) dispositions of obsolete assets, (e)
sale, leases, or other disposition among Companies to a Company; (f) if no
Default or Potential Default then exists or arises as a result thereof, sales of
assets other than those in CLAUSES (a) through (e) and CLAUSE (g) (PROVIDED
THAT, the fair market value of all assets sold pursuant to this CLAUSE (f) (i)
does not exceed $5,000,000 in the aggregate from the Closing Date to any date of
determination, and (ii) does not exceed $750,000 in any calendar year); and (g)
sales by Logix of the indefeasible right to use up to 12 strands of any 18
strands of Dark Fiber under commercially reasonable terms (PROVIDED THAT, (i)
the total sales price for all assets sold pursuant to this CLAUSE (g) does not
exceed $8,000,000 from the Closing Date to any date of determination, and (ii)
up to $500,000 in Capital Expenditures for "MAKE READY" costs in connection with
such sales shall not be considered in the calculation of Capital Expenditures
for determining compliance with SECTION 9.29(b)).

         9.24 SALE-LEASEBACK FINANCINGS. No Company will enter into any
sale-leaseback arrangement with any Person pursuant to which such Company shall
lease any asset (whether now owned or hereafter acquired) if such asset has been
or is to be sold or transferred by any Company to any other Person.

                                       56

<PAGE>

         9.25 MERGERS AND DISSOLUTIONS; SALE OF CAPITAL STOCK. No Company
will, directly or indirectly, merge or consolidate with any other Person,
OTHER THAN (a) as a result of a Permitted Acquisition, (b) mergers or
consolidations involving any Borrower if such Borrower is the surviving
entity, (c) mergers among Wholly-owned Companies; PROVIDED THAT, with respect
to CLAUSE (a), (b), and (c), in any merger involving Logix (including a
Permitted Acquisition effected as a merger), Logix must be the surviving
entity, and in any merger involving any other Company OTHER THAN Logix
(including a Permitted Acquisition effected as a merger), a Company must be
the surviving entity. Neither Parent or Dobson Telephone will, directly or
indirectly, merge or consolidate with any other Person OTHER THAN Logix. No
Loan Party shall liquidate, wind up, or dissolve (or suffer any liquidation
or dissolution), OTHER THAN liquidations, wind ups, or dissolutions incident
to mergers permitted under this SECTION 9.25. No Loan Party may sell, assign,
lease, transfer, or otherwise dispose of the capital stock (or other
ownership interests) of any Subsidiary of such entity, EXCEPT for sales,
leases, transfers, or other such distributions to another Loan Party.

         9.26 NEW BUSINESS. No Loan Party will, directly or indirectly,
permit or suffer to exist any material change in the type of businesses in
which it is engaged from the businesses of the Companies as conducted on the
Closing Date.

         9.27 AFFILIATE SUBORDINATION AGREEMENTS. The Companies shall,
simultaneously with the creation of any and all future Debt of any Loan Party
to any one or more Affiliates, cause the appropriate Affiliate or Affiliates
to execute and deliver to Administrative Agent an agreement, substantially in
the form of EXHIBIT H, subordinating the payment of such Debt to the payment
of the Obligation.

         9.28 AMENDMENTS TO DOCUMENTS. No Company shall (a) amend or permit
any amendments to any Company's Articles of Incorporation or Bylaws or any
Partnership Agreement as in effect on the date of this Agreement, if such
action could adversely affect the Rights of Lenders; (b) amend any existing
credit arrangement or enter into any new credit arrangement (to the extent
permitted by the Loan Papers), if such amended or new credit arrangements
contain any provisions which are materially more restrictive (as reasonably
determined by Administrative Agent) than the provisions of the Loan Papers;
or (c) amend or permit any amendments to (i) any lease agreement relating to
any switch sites or network operation facilities, (ii) the agreement entered
into on or about March 9, 1990, between AT&T Communications, Inc., and Dobson
Fiber Company, Inc., (iii) any agreements between ACE*COM Corporation and
Logix, if any such amendments to the agreements described in CLAUSES (i),
(ii), and (iii) could adversely affect any Rights of any Lender, any Liens of
any Lender on the Collateral, or any Rights to assign such agreements, or
(iv) the Capital Contribution Agreement, including but not limited to any
provisions concerning the subordinated loan evidenced thereby.

         9.29 FINANCIAL COVENANTS.

              (a) BENCHMARK BUDGET COVENANTS. At all times (calculated at
         any date of determination [each a "COMPLIANCE DATE"] (i) for the
         three-calendar month period most recently ended at any Compliance Date
         occurring prior to December 31, 2000, and (ii) for the fiscal quarter
         then most recently ended at any Compliance Date occurring on or after
         December 31, 2000):

                  (i)  MINIMUM CLEC REVENUES. The revenues of the CLEC Business
              shall not be less than 80% (if the applicable Compliance Date is
              prior to July 1, 2000) or 85% (if the applicable Compliance Date
              is on or after July 1, 2000) of the revenues projected for such
              period of determination in the Benchmark Budget for the CLEC
              Business.

                                      57
<PAGE>

                  (ii)  MAXIMUM OPERATING CASH FLOW LOSSES OF THE CLEC
              BUSINESS. The Operating Cash Flow losses of the CLEC Business
              shall not be greater than 120% (if the applicable Compliance
              Date is prior to July 1, 2000) or 115% (if the applicable
              Compliance Date is on or after July 1, 2000) of the losses (if
              any) projected for such period of determination in the
              Benchmark Budget for the CLEC Business.

                  (iii) MINIMUM OPERATING CASH FLOW OF THE CLEC BUSINESS. The
              Operating Cash Flow of the CLEC Business shall not be less than
              80% (if the applicable Compliance Date is prior to July 1,
              2000) or 85% (if the applicable Compliance Date is on or after
              July 1, 2000) of the Operating Cash Flow projected for such
              period of determination in the Benchmark Budget for the CLEC
              Business.

                  (iv)  MINIMUM CLEC ACCESS LINES. The number of CLEC Access
              Lines shall not be less than 80% (if the applicable Compliance
              Date is prior to July 1, 2000) or 85% (if the applicable
              Compliance Date is on or after July 1, 2000) of the number of
              CLEC Access Lines projected for such period of determination in
              the Benchmark Budget for the CLEC Business.

                  (v)   MINIMUM DOBSON TELEPHONE OPERATING CASH FLOW. The
              Operating Cash Flow of Dobson Telephone and its Subsidiaries
              shall not be less than 90% of the Operating Cash Flow projected
              for such period of determination in the Benchmark Budget for
              Dobson Telephone.

                  (vi)  MINIMUM FIBER BUSINESS OPERATING CASH FLOW. The
              Operating Cash Flow of the Fiber Business shall not be less
              than 90% of the Operating Cash Flow projected for such period
              of determination in the Benchmark Budget for the Fiber Business.

              (b) MAXIMUM CAPITAL EXPENDITURES.  The aggregate Capital
         Expenditures  of Parent and its Subsidiaries for any period of
         determination shall not exceed the amount shown in the table below
         which corresponds to such period of determination:

<TABLE>
<CAPTION>
              ------------------------------------------------------------------
                                                               MAXIMUM CAPITAL
                             PERIOD                             EXPENDITURES
              ------------------------------------------------------------------
              <S>                                              <C>
                        Calendar year 1999                       $50,100,000
              ------------------------------------------------------------------
              First six months of calendar year 2000             $10,000,000
              ------------------------------------------------------------------
                        Calendar year 2000                       $16,700,000
              ------------------------------------------------------------------
              First six months of calendar year 2001             $ 7,000,000
              ------------------------------------------------------------------
                        Calendar year 2001                       $11,100,000
              ------------------------------------------------------------------
              First six months of calendar year 2002             $ 7,000,000
              ------------------------------------------------------------------
                        Calendar year 2002                       $11,800,000
              ------------------------------------------------------------------
              First six months of calendar year 2003             $ 7,000,000
              ------------------------------------------------------------------
                        Calendar year 2003                       $11,500,000
              ------------------------------------------------------------------
</TABLE>

                                      58
<PAGE>

<TABLE>
<CAPTION>
              ------------------------------------------------------------------
                                                               MAXIMUM CAPITAL
                             PERIOD                             EXPENDITURES
              ------------------------------------------------------------------
              <S>                                              <C>
              First six months of calendar year 2004             $ 7,000,000
              ------------------------------------------------------------------
                        Calendar year 2004                       $11,800,000
              ------------------------------------------------------------------
              First six months of calendar year 2005             $ 7,000,000
              ------------------------------------------------------------------
                        Calendar year 2005                       $12,000,000
              ------------------------------------------------------------------
</TABLE>

              (c) PHASE I LEVERAGE RATIO. From the Closing Date until (but not
         including) the Phase II Commencement Date, the Phase I Leverage Ratio
         shall not be greater than the ratio shown in the table below which
         corresponds to the applicable period of determination:

<TABLE>
<CAPTION>
              ------------------------------------------------------------------
                                                               MAXIMUM PHASE I
                             PERIOD                            LEVERAGE RATIO
              ------------------------------------------------------------------
              <S>                                              <C>
                   Closing Date to and including 09/30/99         6.25:1.00
              ------------------------------------------------------------------
                  10/01/99 through and including 10/31/99         6.75:1.00
              ------------------------------------------------------------------
                 11/01/99 through and including 01/30/2000        7.25:1.00
              ------------------------------------------------------------------
                01/31/2000 through and including 02/29/2000       4.75:1.00
              ------------------------------------------------------------------
                03/01/2000 through and including 09/30/2000       5.25:1.00
              ------------------------------------------------------------------
              10/01/2000 to (but not including) the Phase II      5.50:1.00
                            Commencement Date
              ------------------------------------------------------------------
</TABLE>

         ; PROVIDED THAT, notwithstanding the foregoing, if the Second Capital
         Date has occurred, then the Phase I Leverage Ratio shall be 4.00 to
         1.00 for any date of determination occurring on or after the Second
         Capital Date, but prior to the Phase II Commencement Date.

              (d) PHASE II LEVERAGE RATIO. The Phase II Leverage Ratio shall
         not be greater than the ratio shown in the table below which
         corresponds to the applicable period of determination:

<TABLE>
<CAPTION>
              ------------------------------------------------------------------
                                                               MAXIMUM PHASE II
                             PERIOD                             LEVERAGE RATIO
              ------------------------------------------------------------------
              <S>                                              <C>
              On the Phase II Commencement Date to and            2.75:1.00
                       including 03/31/2002
              ------------------------------------------------------------------
               04/01/2002 to and including 09/30/2002             2.50:1.00
              ------------------------------------------------------------------
                    10/01/2002 and thereafter                     2.00:1.00
              ------------------------------------------------------------------
</TABLE>

              (e) INTEREST COVERAGE RATIO. On and after June 30, 2002, the
         Interest Coverage Ratio shall not be less than the ratio shown in the
         table below which corresponds to the applicable period of
         determination:

                                      59
<PAGE>

<TABLE>
<CAPTION>
              ------------------------------------------------------------------
                                                            MINIMUM INTEREST
                             PERIOD                          COVERAGE RATIO
              ------------------------------------------------------------------
              <S>                                           <C>
              06/30/2002 to and including 12/31/2002          1.05 to 1.00
              ------------------------------------------------------------------
              01/01/2003 to and including 06/30/2003          1.10 to 1.00
              ------------------------------------------------------------------
              07/01/2003 to and including 12/31/2003          1.25 to 1.00
              ------------------------------------------------------------------
                      01/01/2004 and thereafter               1.50 to 1.00
              ------------------------------------------------------------------
</TABLE>

              (f) DEBT SERVICE COVERAGE RATIO. On and after June 30, 2002, the
         ratio of (i) the SUM (calculated for the most recently-ended fiscal
         quarter) of the Operating Cash Flow of the Companies PLUS (without
         duplication) the Operating Cash Flow of Dobson Telephone and its
         Subsidiaries to (ii) the SUM of the Debt Service of the Companies PLUS
         (without duplication) the Debt Service of Dobson Telephone and its
         Subsidiaries, shall not be less than the ratio shown in the table below
         which corresponds to the applicable period of determination.

<TABLE>
<CAPTION>
              ------------------------------------------------------------------
                                                               MINIMUM DEBT
                             PERIOD                          SERVICE COVERAGE
              ------------------------------------------------------------------
              <S>                                            <C>
              06/30/2002 to and including 12/31/2002           1.00 to 1.00
              ------------------------------------------------------------------
              01/01/2003 to and including 06/30/2003           1.05 to 1.00
              ------------------------------------------------------------------
              07/01/2003 to and including 12/31/2003           1.15 to 1.00
              ------------------------------------------------------------------
                    01/01/2004 and thereafter                  1.25 to 1.00
              ------------------------------------------------------------------
</TABLE>

              (g) CONSOLIDATED LEVERAGE RATIO. On and after the date upon
         which all of the Pledged Government Securities have been liquidated
         and used to fund interest payments on the Senior Notes (the
         "COMMENCEMENT DATE"), the Consolidated Leverage Ratio shall not be
         greater than the ratio shown in the table below which corresponds to
         the applicable period of determination:

<TABLE>
<CAPTION>
              ------------------------------------------------------------------
                                                          MAXIMUM CONSOLIDATED
                             PERIOD                          LEVERAGE RATIO
              ------------------------------------------------------------------
              <S>                                         <C>
                Commencement Date to and including            14.50 to 1.00
                           06/30/2002
              ------------------------------------------------------------------
              07/01/2002 to and including 12/31/2002          12.50 to 1.00
              ------------------------------------------------------------------
              01/01/2003 to and including 06/30/2003          10.00 to 1.00
              ------------------------------------------------------------------
              07/01/2003 to and including 12/31/2003           8.00 to 1.00
              ------------------------------------------------------------------
              01/01/2004 to and including 06/30/2004           7.00 to 1.00
              ------------------------------------------------------------------
                     07/01/2004 and thereafter                 4.50 to 1.00
              ------------------------------------------------------------------
</TABLE>

         9.30 YEAR 2000. All of the material computer software, computer
firmware, computer hardware (whether general or special purpose), and other
similar or related items of automated, computerized, and/or

                                      60
<PAGE>

software systems that are used or relied on by the Companies in the conduct
of their respective businesses will not materially malfunction, will not
cease to function, will not generate materially incorrect data, and will not
produce materially incorrect results when processing, providing, and/or
receiving (a) date-related data into and between the twentieth and
twenty-first centuries and (b) date-related data in connection with any valid
date in the twentieth and twenty-first centuries.

         9.31 CASH BALANCES. The Logix Group shall at all times maintain not
less than $1,500,000 of Unrestricted Cash.

         9.32 COVENANTS OF PARENT. So long as the Commitment has not been
terminated or the Obligation has not been paid in full, Parent further
covenants and agrees (and agrees to cause each Subsidiary of Parent, when
applicable) to perform, observe, and comply with each of the following
additional covenants:

              (a) PARENT DEBT. Parent shall not borrow any money or create
         any Debt, EXCEPT (i) the guaranty of the Obligation, (ii) Financial
         Hedges which comply with the requirement of the Loan Papers, (iii) Debt
         arising under the subordinated loan from DCCLP incurred in accordance
         with the Capital Contribution Agreement, SO LONG AS concurrently with
         the receipt of any proceeds from any advance made by DCCLP, Parent
         shall make a Capital Contribution to Borrower in an amount equal to
         such subordinated loan advance; and (iv) subject to the prior written
         consent of Lenders, additional unsecured Debt in an amount and on terms
         and conditions acceptable to Lenders, all of the Net Cash Proceeds of
         which Debt shall be contributed to Logix as a Capital Contribution on
         terms reasonably acceptable to Administrative Agent.

              (b) FIXED RATE DEBT. Parent shall not (and shall cause each
         Subsidiary of Parent to not) permit to exist or incur any Debt if,
         after giving effect to such Debt Issuance, at any date of determination
         less than 75% of the Debt of Parent and its Subsidiaries on a
         consolidated basis is fixed, capped, or hedged; PROVIDED THAT, to the
         extent any Financial Hedge is entered into, purchased, or acquired by
         any Loan Party to satisfy the requirements of the foregoing sentence,
         then (i) the protected rate shall be no greater than 2.0% above the
         prevailing three-month Eurodollar Rate and (ii) the minimum duration of
         such Financial Hedge shall be two years.

              (c) SUBSIDIARY DEBT. Parent shall not permit any Subsidiary
         (OTHER THAN the Companies) to directly or indirectly, create, incur, or
         suffer to exist any direct, indirect, fixed, or contingent liability
         for any Debt, OTHER THAN (i) trade accounts payable which are for goods
         furnished or services rendered in the ordinary course of business and
         are payable in accordance with customary trade terms that are not more
         than 90 days past due, (ii) Debt with Loan Parties, and (iii) solely
         with respect to Dobson Telephone and its Subsidiaries, up to
         $37,500,000 in RUS/RTB Debt.

              (d) RUS/RTB DEBT. Upon the occurrence and continuance of a
         payment Default or ten days after the occurrence and continuance of
         any other Default, and at the request of Required Lenders, Parent
         shall (and shall cause Dobson Telephone) to cooperate with
         Administrative Agent and Lenders to cause (i) the RUS/RTB Debt to be
         repaid in full and the commitment thereunder terminated and (ii)
         Dobson Telephone to become an Additional Borrower under and in
         accordance with the Loan Papers, pledging all its assets to secure
         the Obligation and satisfying each of the conditions in SECTION 7.4,
         unless waived by Required Lenders. Nothing in this SECTION 9.32(d)
         shall obligate the Lenders to make loans to Dobson Telephone or to
         repay the RUS/RTB Debt.

              (e) LIENS. Parent shall not (and shall cause each Subsidiary
         of Parent not to) create, incur, or suffer or permit to be created or
         incurred or to exist any Lien upon any of its assets EXCEPT

                                       61
<PAGE>

         in favor of Administrative Agent (for the ratable benefit of
         Lenders) as security for the Obligation, OTHER THAN (i) Liens for
         taxes, assessments, or other governmental charges, federal, state,
         or local, which are then being currently contested in good faith by
         appropriate proceedings and are covered by appropriate reserves
         maintained in cash or Cash Equivalents and in accordance with GAAP;
         (ii) Liens of mechanics, carriers, warehousemen, or materialmen
         required in the ordinary course of business and not yet due and
         payable; (iii) pledges or deposits to secure obligations under
         workmen's compensation, unemployment insurance, or social security
         laws or similar legislation; (iv) deposits to secure performance or
         payment bonds, bids, tenders, contracts, leases, franchises, or
         public and statutory obligations required in the ordinary course of
         business; (v) deposits to secure surety, appeal, or custom bonds
         required in the ordinary course of business; (vi) Liens granted by
         Dobson Telephone securing the RUS/RTB Debt; and (vii) Liens on the
         Pledged Government Securities securing interest payments on the
         Senior Notes.

              (f) LOANS, ADVANCES, AND INVESTMENTS. Parent shall not make
         any loan, advance, extension of credit, or capital contribution to,
         make any investment in, or purchase or commit to purchase any stock
         or other securities or evidences of Debt of, or interests in, any
         other Person, OTHER THAN Capital Contributions to Logix.

               (g) EQUITY ISSUANCE. Concurrently with any Equity Issuance by
         Parent, Parent shall make a Capital Contribution to Borrower on terms
         acceptable to Administrative Agent, in an amount equal to 100% of the
         Net Cash Proceeds realized from Parent's Equity Issuance.

              (h) SALE OF ASSETS BY DOBSON TELEPHONE. Parent shall not permit
         Dobson Telephone to sell, assign, transfer, or otherwise dispose of
         any of its assets, OTHER THAN (a) sales of inventory in the ordinary
         course of business, (b) the sale, discount, or transfer of
         delinquent accounts receivable in the ordinary course of business
         for purposes of collection, (c) occasional sales of immaterial
         assets for consideration not less than the fair market value
         thereof, (d) dispositions of obsolete assets, (e) sale, leases, or
         other dispositions to a Company; or (f) if no Default or Potential
         Default then exists or arises as a result thereof, sales of other
         assets in the ordinary course of business; SO LONG AS, the net
         proceeds of assets sold pursuant to CLAUSE (f) are reinvested in
         Telecommunications Assets of Dobson Telephone within six months from
         the date of consummation of such sale.

              (i) SENIOR NOTES. Parent shall not (a) amend or modify any
         provision of, or waive any condition under, any document or instrument
         evidencing or relating to the Senior Notes or the Indenture pursuant to
         which the Senior Notes were issued; (b) make any optional redemptions,
         prepayments, or other payments on the Senior Notes, OTHER THAN (i)
         regularly scheduled interest payments on the Senior Notes after June
         15, 2001; (c) use proceeds of any Distribution, loan, advance, or
         investment from any Company for any purpose, OTHER THAN (i) to make
         regularly-scheduled interest payments on the Senior Notes on and after
         the date upon which all Pledged Government Securities have been
         liquidated and used to fund interest payments on the Senior Notes and
         (ii) if the Second Capital Date has occurred and no Default or
         Potential Default then exists or arises, to repay the principal and
         interest on the subordinated loan made by DCCLP to Parent pursuant to
         the Capital Contribution Agreement; (d) use the Pledged Government
         Securities for any purpose OTHER THAN to make contributions to the
         equity of Borrower or to make interest payments on the Senior Notes as
         and when due; or (e) use the proceeds of the Senior Notes for any
         purpose, OTHER THAN Capital Contributions to Logix, the purchase of the
         Pledged Government Securities, or the payment of fees and expenses
         incurred in connection with the issuance of the Senior Notes.

                                      62
<PAGE>

              (j) CAPITAL CONTRIBUTIONS TO BORROWER. Parent shall make
         Capital Contributions to Borrower on such dates and in such amounts
         as are required by the Capital Contribution Agreement and shall
         comply with each of the terms and covenants binding upon Parent
         contained in the Capital Contribution Agreement.

SECTION 10    DEFAULT.  The term "DEFAULT" means the occurrence of any one or
              more of the following events:

         10.1 PAYMENT OF OBLIGATION. The failure or refusal of any Loan Party
(or, if prior to the Second Capital Date, DCCLP) to pay (a) the Obligation when
the same becomes due (whether by its terms, by acceleration, or as otherwise
provided in the Loan Papers); and (b) the indemnifications and reimbursement
obligations provided for in the Loan Papers after demand therefor.

         10.2 COVENANTS. The failure or refusal of Borrower (and, if applicable,
any other Loan Party or, if prior to the Second Capital Date, DCCLP), to
punctually and properly perform, observe, and comply with:

              (a) Any covenant, agreement, or condition contained in SECTIONS
         9.1, 9.3, 9.6, 9.12, 9.13, 9.14, 9.16, 9.17, 9.20 through 9.25, 9.28,
         9.29, 9.31, and 9.32; and

              (b) Any other covenant, agreement, or condition contained in any
         Loan Paper (OTHER THAN the covenants to pay the Obligation and the
         indemnification and reimbursement obligations set forth in SECTION 10.1
         and the covenants in SECTION 10.2(a)), and such failure or refusal
         continues for 20 days.

         10.3 DEBTOR RELIEF. Any Loan Party or its Subsidiaries, Communications
(or, if prior to the Second Capital Date, DCCLP) (a) shall not be Solvent, (b)
fails to pay its Debts generally as they become due, (c) voluntarily seeks,
consents to, or acquiesces in the benefit of any Debtor Relief Law, OTHER THAN
as a creditor or claimant, or (d) becomes a party to or is made the subject of
any proceeding provided for by any Debtor Relief Law, OTHER THAN as a creditor
or claimant, that could suspend or otherwise adversely affect the Rights of
Administrative Agent or any Lender granted in the Loan Papers (UNLESS, in the
event such proceeding is involuntary, the petition instituting same is dismissed
within 30 days after its filing).

         10.4 JUDGMENTS AND ATTACHMENTS. Any Loan Party (or, if prior to the
Second Capital Date, DCCLP) fails, within 60 days after entry, to pay, bond, or
otherwise discharge any judgment or order for the payment of money in excess of
$1,000,000 (individually or collectively) or any warrant of attachment,
sequestration, or similar proceeding against any Loan Party's assets having a
value (individually or collectively) of $1,000,000 which is not stayed on
appeal.

         10.5 GOVERNMENT ACTION. (a) A final non-appealable order is issued by
any Governmental Authority, including, but not limited to, the FCC or the United
States Justice Department, seeking to cause any Loan Party (or, if prior to the
Second Capital Date, DCCLP) to divest a significant portion of its assets
pursuant to any antitrust, restraint of trade, unfair competition, industry
regulation, or similar Laws, or (b) any Governmental Authority shall condemn,
seize, or otherwise appropriate, or take custody or control of all or any
substantial portion of the assets of any Loan Party (or, if prior to the Second
Capital Date, DCCLP).

         10.6 MISREPRESENTATION. Any representation or warranty made by any Loan
Party (or, if prior to the Second Capital Date, DCCLP) contained in any Loan
Paper shall at any time prove to have been incorrect in any material respect
when made.

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         10.7 CHANGE OF CONTROL. If (a) prior to the occurrence of a Public
Market, Everett Dobson and Dobson CC Limited Partnership cease to maintain at
least 70% of the voting control (directly or indirectly) of Parent and its
Subsidiaries; and (b) after the occurrence of a Public Market, a "PERSON" or
"GROUP" (within the meaning of SECTION 13(d) of 14(d)(2) of the 1934 Act),
OTHER THAN Everett Dobson or Dobson CC Limited Partnership becomes the
beneficial owner of 35% or more of the Voting Stock of Parent on a fully
diluted basis; (c) Parent ceases to own 100% of the voting control of Logix
or Dobson Telephone; or (d) any Borrower ceases to own 100% of its
Subsidiaries as determined on the Closing Date (or if thereafter acquired, on
the date of the Acquisition thereof). As used herein, "PUBLIC MARKET" shall
be deemed to exist if (i) an underwritten primary public offering of voting
or non-voting common stock or other equivalent equity interest of Parent
(OTHER THAN preferred stock) ("COMMON STOCK") pursuant to an effective
registration statement under the Securities Act of 1933, as amended (the
"SECURITIES ACT") has been consummated and (ii) at least 15% of the total
issued and outstanding Common Stock of Parent has been distributed by means
of an effective registration statement under the Securities Act or sales
pursuant to Rule 144 under the Securities Act.

         10.8 AUTHORIZATIONS. (a) Any Authorization necessary for the
ownership or operations of any Loan Party shall expire, and on or prior to
such expiration, the same shall not have been renewed or replaced by another
Authorization authorizing substantially the same operations by such Loan
Party; or (b) any Authorization necessary for the ownership or operations of
any Loan Party shall be canceled, revoked, terminated, rescinded, annulled,
suspended, or modified in a materially adverse respect, or shall no longer be
in full force and effect, or the grant or the effectiveness thereof shall
have been stayed, vacated, reversed, or set aside, (c) Borrower or any other
Loan Party is required by any Governmental Authority to halt construction or
operations under any Authorization and such action shall continue uncorrected
for 30 days after the applicable entity has received notice thereof; (d) if
any Governmental Authority shall make any other final non-appealable
determination the effect of which would be to affect materially and adversely
the operations of any other Loan Party as now conducted; or (e) if any
Governmental Authority shall refuse to grant any necessary Authorization or
approval to the change of control effected as a result of the merger of
American Telco, Inc., and American Telco Network Services, Inc., with and
unto Logix.

         10.9 DEFAULT UNDER OTHER DEBT AND AGREEMENTS. (a) Any Loan Party
fails to pay when due (after lapse of any applicable grace periods) any Debt
of such Loan Party (OTHER THAN the Obligation) in excess (individually or
collectively) of $1,000,000; or (b) any uncured default exists under any
material written or oral agreement, contract, commitment, or understanding to
which any Loan Party (or, if prior to the Second Capital Date, DCCLP) is a
party, including, without limitation, any Material Agreement.

         10.10 EMPLOYEE BENEFIT PLANS. (a) A "REPORTABLE EVENT" or
"REPORTABLE EVENTS," or a failure to make a required installment or other
payment (within the meaning of SECTION 412(n)(1) of the Code), shall have
occurred with respect to any Employee Plan or Plans that is expected to
result in liability of any Loan Party to the PBGC or to a Plan in an
aggregate amount exceeding $1,000,000 and, within 30 days after the reporting
of any such Reportable Event to Administrative Agent or after the receipt by
Administrative Agent of a statement required pursuant to SECTION 9.3(f),
Administrative Agent shall have notified any Loan Party in writing that (i)
Required Lenders have made a reasonable determination that, on the basis of
such Reportable Event or Reportable Events or the failure to make a required
payment, there are grounds under TITLE IV of ERISA for the termination of
such Employee Plan or Plans by the PBGC, or the appointment by the
appropriate United States district court of a trustee to administer such
Employee Plan or Plans or the imposition of a lien pursuant to SECTION 412(n)
of the Code in favor of an Employee Plan and (ii) as a result thereof a
Default exists hereunder; or (b) any Loan Party or any ERISA Affiliate has
provided to any affected party a 60-day notice of intent to terminate an
Employee Plan pursuant to a distress termination in accordance with SECTION
4041(c) of ERISA if the liability expected to be incurred as a result of such
termination will

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exceed $1,000,000; or (c) a trustee shall be appointed by a United States
district court to administer any such Employee Plan; or (d) the PBGC shall
institute proceedings (including giving notice of intent thereof) to
terminate any such Employee Plan; or (e)(i) any Loan Party or any ERISA
Affiliate shall have been notified by the sponsor of a Multiemployer Plan
that it has incurred withdrawal liability (within the meaning of SECTION 4201
of ERISA) to such Multiemployer Plan, (ii) any Loan Party or such ERISA
Affiliate does not have reasonable grounds for contesting such withdrawal
liability or is not contesting such withdrawal liability in a timely and
appropriate manner and (iii) the amount of such withdrawal liability
specified in such notice, when aggregated with all other amounts required to
be paid to Multiemployer Plans in connection with withdrawal liabilities
(determined as of the date or dates of such notification), exceeds
$1,000,000; or (f) any Loan Party or any ERISA Affiliate shall have been
notified by the sponsor of a Multiemployer Plan that such Multiemployer Plan
is in reorganization or is being terminated, within the meaning of TITLE IV
of ERISA, if solely as a result of such reorganization or termination the
aggregate annual contributions of any Loan Party and its ERISA Affiliates to
all Multiemployer Plans that are then in reorganization or have been or are
being terminated have been or will be increased over the amounts required to
be contributed to such Multiemployer Plans for their most recently completed
plan years by an amount exceeding $1,000,000.

         10.11 LCS. Administrative Agent shall have been served with, or
becomes otherwise subject to, a court order, injunction, or other process or
decree restraining or seeking to restrain it from paying any amount under any
LC and either (a) there has been a drawing under such LC which Administrative
Agent would otherwise be obligated to pay and Borrower has refused to
reimburse Administrative Agent for such payment or (b) the expiration date of
such LC has occurred but the right of any beneficiary thereunder to draw
under such LC has been extended past the expiration date in connection with
the pendency of the related court action or proceeding AND Borrower has
failed to deposit with Administrative Agent cash collateral in an amount
equal to the maximum drawing which could be made under such LC.

         10.12 VALIDITY AND ENFORCEABILITY OF LOAN PAPERS. Any Loan Paper
shall, at any time after its execution and delivery and for any reason, cease
to be in full force and effect in any material respect or be declared to be
null and void (OTHER THAN in accordance with the terms hereof or thereof) or
the validity or enforceability thereof be contested by any Loan Party (or, if
prior to the Second Capital Date, DCCLP) or any other party thereto or any
Loan Party (or, if prior to the Second Capital Date, DCCLP) shall deny in
writing that it has any or any further liability or obligations under any
Loan Paper to which it is a party.

         10.13 MATERIAL ADVERSE EFFECT. If any event or condition shall exist
which could reasonably be expected to be a Material Adverse Event with
respect to the business, operations, properties, or financial positions of
any Loan Party, Communications, or any of their respective Subsidiaries (or,
if prior to the Second Capital Date, DCCLP).

         10.14 ENVIRONMENTAL LIABILITY. If any event or condition shall occur
or exist with respect to any activity or substance regulated under the
Environmental Law and as a result of such event or condition, any Loan Party
shall have incurred or in the opinion of Agents be reasonably likely to incur
a liability in excess of $1,000,000 liability during any consecutive 12 month
period.

         10.15 PLEDGED STOCK. If (a) the Administrative Agent ceases to hold
(for the benefit of Lenders) a perfected, first priority Lien on 100% of the
issued and outstanding shares of common stock of the Companies and the direct
Subsidiaries of Parent, as Collateral; or (b) any Collateral Document after
delivery thereof pursuant to SECTION 6 shall for any reason (other than
pursuant to the terms hereof) cease to create a valid and perfected first
priority Lien on and security interest in the Collateral purported to be
covered thereby, EXCEPT as permitted under the Loan Papers.

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         10.16 DISSOLUTION. Any Loan Party or any of their respective
Subsidiaries (or, if prior to the Second Capital Date, DCCLP) shall dissolve,
liquidate, or otherwise terminate their existence.

         10.17 PAYMENT OF CERTAIN OTHER AGREEMENTS. The payment directly or
indirectly (including, without limitation, any payment in respect of any sinking
fund, defeasance, redemption, or payment of any dividend or distribution) by any
Loan Party of the Senior Notes or any other Debt issued by Parent in a manner or
at a time during which such payment is not permitted under the terms of the Loan
Papers.

         10.18 DEFAULT OR ACCELERATION UNDER CERTAIN OTHER AGREEMENTS. (i) The
occurrence of any "DEFAULT" or "EVENT OF DEFAULT" or other breach which remains
uncured on any date of determination under or with respect to any agreement
creating or evidencing any Senior Notes or any other Debt issued by Parent; (ii)
the trustee with respect to, or any holder of, any Senior Notes or any other
Debt issued by Parent shall effectively declare all or any portion of that Debt
or obligation thereunder due and payable prior to the stated maturity thereof;
or (iii) the Debt or obligations under the Senior Notes or any other Debt issued
by Parent becomes due before its stated maturity by acceleration of the maturity
thereof.

         10.19 REDEMPTION OF CERTAIN OTHER DEBT OR OBLIGATION. The occurrence of
an event, including, without limitation, a "CHANGE IN CONTROL" as defined in any
documents evidencing or creating the Senior Notes or any other Debt issued by
Parent, and the trustee or the holders of any such Debt or obligation shall
initiate notice to request or require (or any Company shall automatically be so
required) to redeem or repurchase such Debt or obligation.

         10.20 CERTAIN DELIVERIES. Borrower fails to deliver to Administrative
Agent any of the following items on or before January 2, 2000;

                  (a) Evidence of the conveyance of the fiber optic cable and
         related rights of way and underlying easements from AT&T to Logix (
         including, without limitation, a deed (in recordable form) conveying to
         Logix a 50% interest in such easements along the fiber route located
         from Amarillo, Texas, to Oklahoma City, Oklahoma);

                  (b) Evidence of the conveyance (in recordable form) by AT&T to
         Logix of the easements for the repeater stations associated with the
         fiber route located from Amarillo, Texas to Oklahoma City, Oklahoma;
         and

                  (c) Collateral Documents executed in recordable form creating
         first priority Liens on rights, titles, and interests of Logix in and
         to the fiber optic cable, fiber route easements, and repeater station
         easements conveyed by AT&T as required in CLAUSE (a) and (b) preceding.

         10.21 NEW CAPITAL. The First Capital Date shall not have occurred on or
prior to the Contribution Compliance Date.

SECTION 11 RIGHTS AND REMEDIES.

         11.1 REMEDIES UPON DEFAULT.

                  (a) If a Default exists under SECTIONS 10.3(c) or 10.3(d), the
         commitment to extend credit hereunder shall automatically terminate and
         the entire unpaid balance of the Obligation shall automatically become
         due and payable without any action or notice of any kind whatsoever and

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         Borrower shall be required to provide cash collateral in an amount
         equal to 110% of the LC Exposure then existing in accordance with
         SECTION 2.2(h).

                  (b) If any Default exists, Administrative Agent shall, upon
         the request of Required Lenders (subject to the terms of SECTION 12) or
         Required Lenders may, do any one or more of the following: (i) if the
         maturity of the Obligation has not already been accelerated under
         Section 11.1(a), declare the entire unpaid balance of the Obligation,
         or any part thereof, immediately due and payable, whereupon it shall be
         due and payable; (ii) terminate the commitments of Lenders to extend
         credit hereunder; (iii) reduce any claim to judgment; (iv) to the
         extent permitted by Law, exercise (or request each Lender to, and each
         Lender shall be entitled to, exercise) the Rights of offset or banker's
         Lien against the interest of each Loan Party (and, if prior to the
         Second Capital Date, DCCLP) in and to every account and other property
         of such Loan Party (and, if prior to the Second Capital Date, DCCLP)
         which are in the possession of Administrative Agent or any Lender to
         the extent of the full amount of the Obligation (to the extent
         permitted by Law, each Loan Party and DCCLP being deemed directly
         obligated to each Lender in the full amount of the Obligation for such
         purposes); (v) if the maturity of the Obligation has not already been
         accelerated under SECTION 11.1(a), demand Borrower to provide cash
         collateral in an amount equal to 110% of the LC Exposure then existing
         in accordance with SECTION 2.2(h); and (vi) exercise any and all other
         legal or equitable Rights afforded by the Loan Papers, the Laws of the
         State of New York, or any other applicable jurisdiction as
         Administrative Agent shall deem appropriate, or otherwise, including,
         but not limited to, the Right to bring suit or other proceedings before
         any Governmental Authority either for specific performance of any
         covenant or condition contained in any of the Loan Papers or in aid of
         the exercise of any Right granted to Administrative Agent or any Lender
         in any of the Loan Papers.

         11.2 COMPANY WAIVERS. To the extent permitted by Law, the Loan Parties
and DCCLP hereby waive presentment and demand for payment, protest, notice of
intention to accelerate, notice of acceleration, and notice of protest and
nonpayment, and agree that their respective liability with respect to the
Obligation (or any part thereof) shall not be affected by any renewal or
extension in the time of payment of the Obligation (or any part thereof), by any
indulgence, or by any release or change in any security for the payment of the
Obligation (or any part thereof).

         11.3 PERFORMANCE BY ADMINISTRATIVE AGENT. If any covenant, duty, or
agreement of any Loan Party or DCCLP is not performed in accordance with the
terms of the Loan Papers, after the occurrence and during the continuance of a
Default, Administrative Agent may, at its option (but subject to the approval of
Required Lenders), perform or attempt to perform such covenant, duty, or
agreement on behalf of such Loan Party or DCCLP. In such event, any amount
expended by Administrative Agent in such performance or attempted performance
shall be payable by the Loan Parties or DCCLP, jointly and severally, to
Administrative Agent on demand, shall become part of the Obligation, and shall
bear interest at the Default Rate from the date of such expenditure by
Administrative Agent until paid. Notwithstanding the foregoing, it is expressly
understood that Administrative Agent does not assume, and shall never have,
EXCEPT by its express written consent, any liability or responsibility for the
performance of any covenant, duty, or agreement of any Loan Party or DCCLP.

         11.4 DELEGATION OF DUTIES AND RIGHTS. Lenders may perform any of their
duties or exercise any of their Rights under the Loan Papers by or through their
respective Representatives.

         11.5 NOT IN CONTROL. Nothing in any Loan Paper shall, or shall be
deemed to (a) give any Agent or any Lender the Right to exercise control over
the assets (including real property), affairs, or management

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of any Loan Party or DCCLP prior to exercising Rights under the Collateral
Documents, (b) preclude or interfere with compliance by any Loan Party or
DCCLP with any Law, or (c) require any act or omission by any Loan Party or
DCCLP that may be harmful to Persons or property. Any "MATERIAL ADVERSE
EVENT" or other materiality qualifier in any representation, warranty,
covenant, or other provision of any Loan Paper is included for credit
documentation purposes only and shall not, and shall not be deemed to, mean
that any Agent or any Lender acquiesces in any non-compliance by any Loan
Party or DCCLP with any Law or document, or that any Agent or any Lender does
not expect the Loan Parties and DCCLP to promptly, diligently, and
continuously carry out all appropriate removal, remediation, and termination
activities required or appropriate in accordance with all Environmental Laws.
Agents and Lenders have no fiduciary relationship with or fiduciary duty to
any Loan Party or DCCLP arising out of or in connection with the Loan Papers,
and the relationship between Agents and Lenders, on the one hand, and the
Loan Parties and DCCLP, on the other hand, in connection with the Loan Papers
is solely that of debtor and creditor. The power of the Agents and Lenders
under the Loan Papers is limited to the Rights provided in the Loan Papers,
which Rights exist solely to assure payment and performance of the Obligation
and may be exercised in a manner calculated by the Agents and Lenders in
their respective good faith business judgment.

         11.6 COURSE OF DEALING. The acceptance by Administrative Agent or
Lenders at any time and from time to time of partial payment on the Obligation
shall not be deemed to be a waiver of any Default then existing. No waiver by
Administrative Agent, Required Lenders, or Lenders of any Default shall be
deemed to be a waiver of any other then-existing or subsequent Default. No delay
or omission by Administrative Agent, Required Lenders, or Lenders in exercising
any Right under the Loan Papers shall impair such Right or be construed as a
waiver thereof or any acquiescence therein, nor shall any single or partial
exercise of any such Right preclude other or further exercise thereof, or the
exercise of any other Right under the Loan Papers or otherwise.

         11.7 CUMULATIVE RIGHTS. All Rights available to Administrative Agent
and Lenders under the Loan Papers are cumulative of and in addition to all other
Rights granted to Administrative Agent and Lenders at law or in equity, whether
or not the Obligation is due and payable and whether or not Administrative Agent
or Lenders have instituted any suit for collection, foreclosure, or other action
in connection with the Loan Papers.

         11.8 APPLICATION OF PROCEEDS. Any and all proceeds ever received by
Administrative Agent or Lenders from the exercise of any Rights pertaining to
the Obligation shall be applied to the Obligation in the order and manner set
forth in SECTION 3.12.

         11.9 CERTAIN PROCEEDINGS. Each Loan Party and DCCLP will promptly
execute and deliver, or cause the execution and delivery of, all applications,
certificates, instruments, registration statements, and all other documents and
papers Administrative Agent or Lenders may reasonably request in connection with
the obtaining of any consent, approval, registration, qualification, permit,
license, or Authorization of any Governmental Authority or other Person
necessary or appropriate for the effective exercise of any Rights under the Loan
Papers. Because the Loan Parties and DCCLP agree that Administrative Agent's and
Lenders' remedies at Law for failure of the Companies to comply with the
provisions of this Section would be inadequate and that such failure would not
be adequately compensable in damages, the Companies agree that the covenants of
this Section may be specifically enforced.

         11.10 LIMITATION OF RIGHTS. Notwithstanding any other provision of this
Agreement or any other Loan Paper, any action taken or proposed to be taken by
Administrative Agent, any Agent, or any Lender under any Loan Paper which would
affect the operational, voting, or other control of any Loan Party or DCCLP,
shall be pursuant to SECTION 310(d) of the COMMUNICATIONS ACT OF 1934 (as
amended), any applicable

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state Law, and the applicable rules and regulations thereunder and, if and to
the extent required thereby, subject to the prior consent of the FCC or any
applicable PUC.

         11.11 EXPENDITURES BY LENDERS. Each Borrower, jointly and severally,
agrees to pay promptly within 30 Business Days after request therefor (a) all
reasonable costs, fees, and expenses paid or incurred by Administrative Agent
and Arranger, incident to any Loan Paper (including, but not limited to, the
reasonable fees and expenses of counsel to Administrative Agent and Arranger and
the allocated cost of internal counsel in connection with the negotiation,
preparation, delivery, execution, coordination, and administration of the Loan
Papers and any related amendment, waiver, or consent) and (b) all reasonable
costs and expenses of Lenders and Administrative Agent incurred by
Administrative Agent or any Lender in connection with the enforcement of the
obligations of any Company arising under the Loan Papers (including, without
limitation, costs and expenses incurred in connection with any workout or
bankruptcy) or the exercise of any Rights arising under the Loan Papers
(including, but not limited to, reasonable attorneys' fees including allocated
cost of internal counsel, court costs, and other costs of collection), all of
which shall be a part of the Obligation and shall bear interest at the Default
Rate from the date due until the date repaid.

         11.12 INDEMNIFICATION. BORROWER AND EACH OTHER LOAN PARTY AND DCCLP (BY
EXECUTION OF GUARANTIES), JOINTLY AND SEVERALLY, AGREE TO INDEMNIFY AND HOLD
HARMLESS EACH AGENT, ARRANGER, AND EACH LENDER AND EACH OF THEIR RESPECTIVE
AFFILIATES AND THEIR RESPECTIVE OFFICERS, DIRECTORS, EMPLOYEES, AGENTS,
ATTORNEYS, AND ADVISORS (EACH, AN "INDEMNIFIED PARTY") FROM AND AGAINST ANY AND
ALL CLAIMS, DAMAGES, LOSSES, LIABILITIES, COSTS, AND EXPENSES (INCLUDING,
WITHOUT LIMITATION, REASONABLE ATTORNEYS' FEES) THAT MAY BE INCURRED BY OR
ASSERTED OR AWARDED AGAINST ANY INDEMNIFIED PARTY, IN EACH CASE ARISING OUT OF
OR IN CONNECTION WITH OR BY REASON OF (INCLUDING, WITHOUT LIMITATION, IN
CONNECTION WITH ANY INVESTIGATION, LITIGATION, OR PROCEEDING OR PREPARATION OF
DEFENSE IN CONNECTION THEREWITH) THE LOAN PAPERS, ANY OF THE TRANSACTIONS
CONTEMPLATED HEREIN OR THE ACTUAL OR PROPOSED USE OF THE PROCEEDS OF THE
BORROWINGS (INCLUDING ANY OF THE FOREGOING ARISING FROM THE NEGLIGENCE OF THE
INDEMNIFIED PARTY), EXCEPT TO THE EXTENT SUCH CLAIM, DAMAGE, LOSS, LIABILITY,
COST, OR EXPENSE IS FOUND IN A FINAL, NON-APPEALABLE JUDGMENT BY A COURT OF
COMPETENT JURISDICTION TO HAVE RESULTED FROM SUCH INDEMNIFIED PARTY'S GROSS
NEGLIGENCE OR WILLFUL MISCONDUCT. IN THE CASE OF AN INVESTIGATION, LITIGATION,
OR OTHER PROCEEDING TO WHICH THE INDEMNITY IN THIS SECTION 11.12 APPLIES, SUCH
INDEMNITY SHALL BE EFFECTIVE WHETHER OR NOT SUCH INVESTIGATION, LITIGATION, OR
PROCEEDING IS BROUGHT BY ANY LOAN PARTY OR DCCLP, OR THEIR RESPECTIVE DIRECTORS,
SHAREHOLDERS, OR CREDITORS, OR AN INDEMNIFIED PARTY OR ANY OTHER PERSON, OR ANY
INDEMNIFIED PARTY IS OTHERWISE A PARTY THERETO AND WHETHER OR NOT THE
TRANSACTIONS CONTEMPLATED HEREBY ARE CONSUMMATED. BORROWER AND EACH OTHER LOAN
PARTY AND DCCLP (BY EXECUTION OF A GUARANTY) AGREE NOT TO ASSERT ANY CLAIM
AGAINST ANY INDEMNIFIED PARTY ON ANY THEORY OF LIABILITY, FOR SPECIAL, INDIRECT,
CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING OUT OF OR OTHERWISE RELATING TO THE
LOAN PAPERS, ANY OF THE TRANSACTIONS CONTEMPLATED HEREIN OR THE ACTUAL OR
PROPOSED USE OF THE PROCEEDS OF THE BORROWINGS. NO INDEMNIFIED PARTY MAY SEEK
INDEMNIFICATION HEREUNDER FROM A LOAN PARTY OR DCCLP FOR LIABILITIES OR EXPENSES
OWED TO SUCH LOAN PARTY OR DCCLP (AS THE CASE MAY BE), TO THE EXTENT SUCH
LIABILITIES OR EXPENSES ARISE OUT OF SUCH INDEMNIFIED PARTY'S BREACH UNDER THE
LOAN PAPERS AS DETERMINED IN A FINAL, NON-APPEALABLE JUDGMENT BY A COURT OF
COMPETENT JURISDICTION. WITHOUT PREJUDICE TO THE SURVIVAL OF ANY OTHER AGREEMENT
OF ANY LOAN PARTY OR DCCLP HEREUNDER, THE AGREEMENTS AND OBLIGATIONS OF THE LOAN
PARTIES AND DCCLP CONTAINED IN THIS SECTION 11.12 SHALL SURVIVE THE PAYMENT IN

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FULL OF THE BORROWINGS AND ALL OTHER AMOUNTS PAYABLE UNDER THIS AGREEMENT AND
THE OTHER LOAN PAPERS.

SECTION 12 AGREEMENT AMONG LENDERS.

         12.1 ADMINISTRATIVE AGENT.

                  (a) Each Lender hereby appoints Bank of America, N.A. (and
         Bank of America, N.A. hereby accepts such appointment) as its nominee
         and agent, in its name and on its behalf: (i) to act as nominee for and
         on behalf of such Lender in and under all Loan Papers; (ii) to arrange
         the means whereby the funds of Lenders are to be made available to any
         Borrower under the Loan Papers; (iii) to take such action as may be
         requested by any Lender under the Loan Papers (when such Lender is
         entitled to make such request under the Loan Papers and after such
         requesting Lender has obtained the concurrence of such other Lenders as
         may be required under the Loan Papers); (iv) to receive all documents
         and items to be furnished to Lenders under the Loan Papers; (v) to
         timely distribute, and Administrative Agent agrees to so distribute, to
         each Lender all material information, requests, documents, and items
         received from any Loan Party or DCCLP under the Loan Papers; (vi) to
         promptly distribute to each Lender its ratable part of each payment or
         prepayment (whether voluntary, as proceeds of collateral upon or after
         foreclosure, as proceeds of insurance thereon, or otherwise) in
         accordance with the terms of the Loan Papers; (vii) to deliver to the
         appropriate Persons requests, demands, approvals, and consents received
         from Lenders; and (viii) to execute, on behalf of Lenders, such
         releases or other documents or instruments as are permitted by the Loan
         Papers or as directed by Lenders from time to time; PROVIDED, HOWEVER,
         Administrative Agent shall not be required to take any action which
         exposes Administrative Agent to personal liability or which is contrary
         to the Loan Papers or applicable Law.

                  (b) Administrative Agent may resign at any time as
         Administrative Agent under the Loan Papers by giving written notice
         thereof to Lenders and may be removed as Administrative Agent under the
         Loan Papers at any time with cause by Required Lenders. Should the
         initial or any successor Administrative Agent ever cease to be a party
         hereto or should the initial or any successor Administrative Agent ever
         resign or be removed as Administrative Agent, then Required Lenders
         shall elect the successor Administrative Agent from among the Lenders
         (OTHER THAN the resigning Administrative Agent). If no successor
         Administrative Agent shall have been so appointed by Required Lenders,
         within 30 days after the retiring Administrative Agent's giving of
         notice of resignation or Required Lenders' removal of the retiring
         Administrative Agent, then the retiring Administrative Agent may, on
         behalf of Lenders, appoint a successor Administrative Agent, which
         shall be a commercial bank having a combined capital and surplus of at
         least $1,000,000,000. Upon the acceptance of any appointment as
         Administrative Agent under the Loan Papers by a successor
         Administrative Agent, such successor Administrative Agent shall
         thereupon succeed to and become vested with all the Rights of the
         retiring Administrative Agent, and the retiring Administrative Agent
         shall be discharged from its duties and obligations of Administrative
         Agent under the Loan Papers (PROVIDED, HOWEVER, THAT when used in
         connection with LCs issued and outstanding prior to the appointment of
         the successor Administrative Agent, "ADMINISTRATIVE AGENT" shall
         continue to refer solely to the bank that issued the outstanding LC;
         PROVIDED FURTHER THAT any LCs issued or renewed after the appointment
         of any successor Administrative Agent shall be issued by such successor
         Administrative Agent), and each Lender shall execute such documents as
         any Lender may reasonably request to reflect such change in and under
         the Loan Papers. After any retiring Administrative Agent's resignation
         or removal as Administrative Agent under the Loan Papers, the
         provisions of

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         this SECTION 12 shall inure to its benefit as to any actions taken
         or omitted to be taken by it while it was Administrative Agent
         under the Loan Papers.

                  (c) Administrative Agent, in its capacity as a Lender, shall
         have the same Rights under the Loan Papers as any other Lender and may
         exercise the same as though it were not acting as Administrative Agent;
         the term "LENDER" shall, UNLESS the context otherwise indicates,
         include Administrative Agent; and any resignation, or removal of
         Administrative Agent hereunder shall not impair or otherwise affect any
         Rights which it has or may have in its capacity as an individual
         Lender. Each Lender, Loan Party, and DCCLP agree that Administrative
         Agent is not a fiduciary for Lenders or for DCCLP or any Loan Party but
         simply is acting in the capacity described herein to alleviate
         administrative burdens for the Loan Parties, DCCLP, and Lenders, that
         Administrative Agent has no duties or responsibilities to Lenders, the
         Loan Parties, or DCCLP EXCEPT those expressly set forth herein, and
         that Administrative Agent in its capacity as a Lender has all Rights of
         any other Lender.

                  (d) Administrative Agent and its Affiliates may now or
         hereafter be engaged in one or more loan, letter of credit, leasing, or
         other financing transactions with any Loan Party or DCCLP, act as
         trustee or depositary for any Loan Party or DCCLP, or otherwise be
         engaged in other transactions with any Loan Party (collectively, the
         "OTHER ACTIVITIES") not the subject of the Loan Papers. Without
         limiting the Rights of Lenders specifically set forth in the Loan
         Papers, Administrative Agent and its Affiliates shall not be
         responsible to account to Lenders for such other activities, and no
         Lender shall have any interest in any other activities, any present or
         future guaranties by or for the account of any Loan Party or DCCLP,
         which are not contemplated or included in the Loan Papers, any present
         or future offset exercised by Administrative Agent and its Affiliates
         in respect of such other activities, any present or future property
         taken as security for any such other activities, or any property now or
         hereafter in the possession or control of Administrative Agent or its
         Affiliates which may be or become security for the obligations of the
         Loan Parties or DCCLP arising under the Loan Papers by reason of the
         general description of indebtedness secured or of property contained in
         any other agreements, documents or instruments related to any such
         other activities; PROVIDED THAT, if any payments in respect of such
         Guaranties or such property or the proceeds thereof shall be applied to
         reduction of the obligations of any Loan Party or DCCLP arising under
         the Loan Papers, then each Lender shall be entitled to share in such
         application ratably. In connection with the foregoing, Lenders
         acknowledge and agree that Bank of America, N.A., currently has, and
         from time to time may enter into, certain secured or unsecured
         financing transactions with DCCLP, which transactions are not and shall
         not be subject to the terms and provisions of the Loan Papers.

         12.2 EXPENSES. Upon demand by Administrative Agent, each Lender shall
pay its ratable part of any reasonable expenses (including, without limitation,
court costs, reasonable attorneys' fees, and other costs of collection) incurred
by Administrative Agent in connection with any of the Loan Papers if and to the
extent Administrative Agent does not receive reimbursement therefor from other
sources within 60 days after incurred; PROVIDED THAT, each Lender shall be
entitled to receive its ratable part of any reimbursement for such expenses, or
part thereof, which Administrative Agent subsequently receives from such other
sources.

         12.3 PROPORTIONATE ABSORPTION OF LOSSES. EXCEPT as otherwise provided
in the Loan Papers, nothing in the Loan Papers shall be deemed to give any
Lender any advantage over any other Lender insofar as the Obligation arising
under the Loan Papers is concerned, or to relieve any Lender from absorbing
ratably any losses sustained with respect to the Obligation (EXCEPT to the
extent such losses result from unilateral

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actions or inactions of any Lender that are not made in accordance with the
terms and provisions of the Loan Papers).

         12.4 DELEGATION OF DUTIES; RELIANCE. Administrative Agent may perform
any of its duties or exercise any of its Rights under the Loan Papers by or
through its Representatives. Administrative Agent and its Representatives shall
(a) be entitled to rely upon (and shall be protected in relying upon) any
writing, resolution, notice, consent, certificate, affidavit, letter, cablegram,
telecopy, telegram, telex or teletype message, statement, order, or other
documents or conversation believed by it or them to be genuine and correct and
to have been signed or made by the proper Person and, with respect to legal
matters, upon opinion of counsel selected by Administrative Agent, (b) be
entitled to deem and treat each Lender as the owner and holder of the Principal
Debt owed to such Lender for all purposes until, subject to SECTION 13.13,
written notice of the assignment or transfer thereof shall have been given to
and received by Administrative Agent (and any request, authorization, consent,
or approval of any Lender shall be conclusive and binding on each subsequent
holder, assignee, or transferee of the Principal Debt owed to such Lender or
portion thereof until such notice is given and received), (c) not be deemed to
have notice of the occurrence of a Default UNLESS a responsible officer of
Administrative Agent, who handles matters associated with the Loan Papers and
transactions thereunder, has received written notice from a Lender, a Loan
Party, or DCCLP and stating that such notice is a "NOTICE OF DEFAULT," and (d)
be entitled to consult with legal counsel (including counsel for any Loan Party
or DCCLP), independent accountants, and other experts selected by Administrative
Agent and shall not be liable for any action taken or omitted to be taken in
good faith by it in accordance with the advice of such counsel, accountants or
experts.

         12.5 LIMITATION OF LIABILITY.

                  (a) None of the Agents or any of their respective
         Representatives shall be liable for any action taken or omitted to be
         taken by it or them under the Loan Papers in good faith and reasonably
         believed by it or them to be within the discretion or power conferred
         upon it or them by the Loan Papers or be responsible for the
         consequences of any error of judgment, EXCEPT for fraud, gross
         negligence, or willful misconduct; and none of the Agents or any of
         their respective Representatives has a fiduciary relationship with any
         Lender by virtue of the Loan Papers (PROVIDED THAT, nothing herein
         shall negate the obligation of Administrative Agent or Administrative
         Agent to account for funds received by it for the account of any
         Lender).

                  (b) Unless indemnified to its satisfaction against loss, cost,
         liability, and expense, neither Administrative Agent nor any other
         Agent shall be compelled to do any act under the Loan Papers or to take
         any action toward the execution or enforcement of the powers thereby
         created or to prosecute or defend any suit in respect of the Loan
         Papers. If Administrative Agent requests instructions from Lenders or
         Required Lenders, as the case may be, with respect to any act or action
         (including, but not limited to, any failure to act) in connection with
         any Loan Paper, Administrative Agent shall be entitled (but shall not
         be required) to refrain (without incurring any liability to any Person
         by so refraining) from such act or action UNLESS and until it has
         received such instructions. EXCEPT where action of Required Lenders or
         all Lenders is required in the Loan Papers, Administrative Agent may
         act hereunder in its own discretion without requesting instructions. In
         no event, however, shall Administrative Agent or any of its respective
         Representatives be required to take any action which it or they
         determine could incur for it or them criminal or onerous civil
         liability. Without limiting the generality of the foregoing, no Lender
         shall have any right of action against Administrative Agent as a result
         of Administrative Agent's acting or refraining from acting hereunder in
         accordance with the instructions of Required Lenders (or all Lenders if
         required in the Loan Papers).

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                  (c) Administrative Agent nor any other Agent shall be
         responsible in any manner to any Lender or any Participant for, and
         each Lender represents and warrants that it has not relied upon
         Administrative Agent or any other Agent in respect of, (i) the
         creditworthiness of any Loan Party or DCCLP and the risks involved to
         such Lender, (ii) the effectiveness, enforceability, genuineness,
         validity, or the due execution of any Loan Paper, (iii) any
         representation, warranty, document, certificate, report, or statement
         made therein or furnished thereunder or in connection therewith, (iv)
         the existence, priority, or perfection of any Lien hereafter granted or
         purported to be granted under any Loan Paper, or (v) observation of or
         compliance with any of the terms, covenants, or conditions of any Loan
         Paper on the part of any Loan Party or DCCLP. Each Lender agrees to
         indemnify Administrative Agent and its respective Representatives and
         hold them harmless from and against (but limited to such Lender's Pro
         Rata Part of) any and all liabilities, obligations, losses, damages,
         penalties, actions, judgments, suits, costs, reasonable expenses, and
         reasonable disbursements of any kind or nature whatsoever which may be
         imposed on, asserted against, or incurred by them in any way relating
         to or arising out of the Loan Papers or any action taken or omitted by
         them under the Loan Papers (INCLUDING ANY OF THE FOREGOING ARISING FROM
         THE NEGLIGENCE OF ADMINISTRATIVE AGENT OR ITS REPRESENTATIVES), to the
         extent Administrative Agent and its respective Representatives are not
         reimbursed for such amounts by any Company (PROVIDED THAT,
         Administrative Agent, and its respective Representatives shall not have
         the right to be indemnified hereunder for its or their own fraud, gross
         negligence, or willful misconduct).

         12.6 DEFAULT; COLLATERAL.

                  (a) Upon the occurrence and continuance of a Default, Lenders
         agree to promptly confer in order that Required Lenders or Lenders, as
         the case may be, may agree upon a course of action for the enforcement
         of the Rights of Lenders; and Administrative Agent shall be entitled to
         refrain from taking any action (without incurring any liability to any
         Person for so refraining) UNLESS and until Administrative Agent shall
         have received instructions from Required Lenders. All rights of action
         under this Agreement and under the Notes and all rights to the
         Collateral, if any, hereunder may be enforced by Administrative Agent
         and any suit or proceeding instituted by Administrative Agent in
         furtherance of such enforcement shall be brought in its name as
         Administrative Agent without the necessity of joining as plaintiffs or
         defendants any other Lender, and the recovery of any judgment shall be
         for the benefit of Lenders subject to the expenses of Administrative
         Agent. In actions with respect to any property of Borrower,
         Administrative Agent is acting for the ratable benefit of each Lender.
         Any and all agreements to subordinate (whether made heretofore or
         hereafter) other indebtedness or obligations of any Loan Party or DCCLP
         to the Obligation shall be construed as being for the ratable benefit
         of each Lender.

                  (b) Each Lender authorizes and directs Administrative Agent to
         enter into the Collateral Documents for the benefit of the Lenders.
         EXCEPT to the extent unanimity is required hereunder, each Lender
         agrees that any action taken by the Required Lenders in accordance with
         the provisions of the Loan Papers, the Collateral Documents, or the
         other Loan Papers, and the exercise by the Required Lenders of the
         powers set forth herein or therein, TOGETHER WITH such other powers as
         are reasonably incidental thereto, shall be authorized and binding upon
         all of the Lenders.

                  (c) Administrative Agent is hereby authorized on behalf of all
         of the Lenders, without the necessity of any notice to or further
         consent from any Lender, from time to time to take any action with
         respect to any Collateral or Collateral Documents which may be
         necessary to perfect and maintain perfected the Liens upon the
         Collateral granted pursuant to the Collateral Documents.

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                  (d) Administrative Agent shall have no obligation whatsoever
         to any Lender or to any other Person to assure that the Collateral
         exists or is owned by any Loan Party or is cared for, protected, or
         insured or has been encumbered or that the Liens granted to
         Administrative Agent herein or pursuant hereto have been properly or
         sufficiently or lawfully created, perfected, protected, or enforced, or
         are entitled to any particular priority, or to exercise at all or in
         any particular manner or under any duty of care, disclosure, or
         fidelity, or to continue exercising, any of the Rights granted or
         available to Administrative Agent in this SECTION 12.6 or in any of the
         Collateral Documents; IT BEING UNDERSTOOD and agreed that in respect of
         the Collateral, or any act, omission, or event related thereto,
         Administrative Agent may act in any manner it may deem appropriate, in
         its sole discretion, given the Administrative Agent's own interest in
         the Collateral as one of the Lenders and that Administrative Agent
         shall have no duty or liability whatsoever to any Lender, OTHER THAN to
         act without gross negligence or wilful misconduct.

                  (e) Lenders hereby irrevocably authorize Administrative Agent,
         at its option and in its discretion, to release any Lien granted to or
         held by Administrative Agent upon any Collateral: (i) upon termination
         of the Commitment and payment and satisfaction of the Obligation; (ii)
         constituting property in which no Loan Party owned an interest at the
         time the Lien was granted or at any time thereafter; (iii) constituting
         property leased to a Loan Party under a lease which has expired or been
         terminated in a transaction permitted under the Loan Paper or is about
         to expire and which has not been, and is not intended by such Loan
         Party to be, renewed; (iv) consisting of an instrument evidencing Debt
         pledged to Administrative Agent (for the benefit of Lenders), if the
         Debt evidenced thereby has been paid in full; (v) upon the sale,
         transfer, or disposition of Collateral which is expressly permitted
         pursuant to the Loan Papers, including, without limitation, under
         SECTION 9.23 or (vi) if approved, authorized, or ratified in writing by
         all necessary Lenders. Upon request by Administrative Agent at any
         time, Lenders will confirm in writing Administrative Agent's authority
         to release particular types or items of Collateral pursuant to this
         SECTION 12.6.

                  (f) In furtherance of the authorizations set forth in this
         SECTION 12.6, each Lender hereby irrevocably appoints Administrative
         Agent its attorney-in-fact, with full power of substitution, for an on
         behalf of and in the name of each such Lender, (i) to enter into
         Collateral Documents (including, without limitation, any appointments
         of substitute trustees under any Collateral Document), (ii) to take
         action with respect to the Collateral and Collateral Documents to
         perfect, maintain, and preserve Lender's Liens, and (iii) to execute
         instruments of release or to take other action necessary to release
         Liens upon any Collateral to the extent authorized in PARAGRAPH (e)
         hereof. This power of attorney shall be liberally, not restrictively,
         construed so as to give the greatest latitude to Administrative Agent's
         power, as attorney, relative to the Collateral matters described in
         this SECTION 12.6. The powers and authorities herein conferred on
         Administrative Agent may be exercised by Administrative Agent through
         any Person who, at the time of the execution of a particular
         instrument, is an officer of Administrative Agent. The power of
         attorney conferred by this SECTION 12.6(f) is granted for valuable
         consideration and is coupled with an interest and is irrevocable so
         long as the Obligation, or any part thereof, shall remain unpaid or
         Lenders are obligated to make any Borrowings under the Loan Papers.

         12.7 LIMITATION OF LIABILITY. To the extent permitted by Law, (a)
neither Administrative Agent nor any other Agent (acting in their respective
agent capacities) shall incur any liability to any other Lender, Agent, or
Participant EXCEPT for acts or omissions resulting from its own fraud, gross
negligence or wilful misconduct, and (b) neither Administrative Agent nor any
other Agent, Lender, or Participant shall incur any liability to any other
Person for any act or omission of any other Lender, Agent, or Participant.

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         12.8 RELATIONSHIP OF LENDERS. Nothing herein shall be construed as
creating a partnership or joint venture among Agents and Lenders.

         12.9 BENEFITS OF AGREEMENT. None of the provisions of this SECTION 12
shall inure to the benefit of any Loan Party or DCCLP or any other Person OTHER
THAN Lenders; consequently, none of the Loan Parties, DCCLP, or any other Person
shall be entitled to rely upon, or to raise as a defense, in any manner
whatsoever, the failure of any Agent or any Lender to comply with such
provisions.

         12.10 AGENTS. None of the Lenders identified in this Agreement as a
"SYNDICATION AGENT" or "DOCUMENTATION AGENT" shall have any rights, powers,
obligations, liabilities, responsibilities, or duties under this Agreement OTHER
THAN those applicable to all Lenders as such. Without limiting the foregoing,
none of the Lenders so identified as a "SYNDICATION AGENT" or "DOCUMENTATION
AGENT" shall have or be deemed to have any fiduciary relationship with any
Lender.

         12.11 OBLIGATIONS SEVERAL. The obligations of Lenders hereunder are
several, and each Lender hereunder shall not be responsible for the obligations
of the other Lenders hereunder, nor will the failure of one Lender to perform
any of its obligations hereunder relieve the other Lenders from the performance
of their respective obligations hereunder.

         12.12 FINANCIAL HEDGES. To the extent any Lender or Affiliate of a
Lender issues a Financial Hedge in accordance with the requirements of the Loan
Papers and accepts the benefits of the Liens in the Collateral arising pursuant
to the Collateral Documents, such Lender (for itself and on behalf of its
Affiliate) agrees (i) to appoint Bank of America, N.A., as its nominee and
agent, to act for and on behalf of such Lender or Affiliate thereof in
connection with the Collateral Documents and (ii) to be bound by the terms of
this Section 12; whereupon all references to "LENDER" in this SECTION 12 and in
the Collateral Documents shall include, on any date of determination, any Lender
or Affiliate of a Lender that is party to a then-effective Financial Hedge which
complies with the requirements of the Loan Papers. Additionally, if the
Obligation owed to any Lender or Affiliate of a Lender consists SOLELY of Debt
arising under a Financial Hedge (such Lender or Affiliate being referred to in
this SECTION 12.12 as an "ISSUING LENDER"), then such Issuing Lender (by
accepting the benefits of any Collateral Documents) acknowledges and agrees that
pursuant to the Loan Papers and without notice to or consent of such Issuing
Lender: (i) Liens in the Collateral may be released in whole or in part; (ii)
all Guaranties may be released; (iii) any Collateral Document may be amended,
modified, supplemented, or restated; and (iv) all or any part of the Collateral
may be permitted to secure other Debt.

SECTION 13 MISCELLANEOUS.

         13.1 HEADINGS. The headings, captions, and arrangements used in any of
the Loan Papers are, UNLESS specified otherwise, for convenience only and shall
not be deemed to limit, amplify, or modify the terms of the Loan Papers, nor
affect the meaning thereof.

         13.2 NONBUSINESS DAYS. In any case where any payment or action is due
under any Loan Paper on a day which is not a Business Day, such payment or
action may be delayed until the next-succeeding Business Day, but interest and
fees shall continue to accrue in respect of any payment to which it is
applicable until such payment is in fact made; PROVIDED THAT, if, in the case of
any such payment in respect of a Eurodollar Rate Borrowing, the next-succeeding
Business Day is in the next calendar month, then such payment shall be made on
the next-preceding Business Day.

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         13.3 COMMUNICATIONS. UNLESS specifically otherwise provided,
whenever any Loan Paper requires or permits any consent, approval, notice,
request, or demand from one party to another, such communication must be in
writing (which may be by telex or telecopy) to be effective and shall be
deemed to have been given (a) if by telex, when transmitted to the telex
number, if any, for such party, and the appropriate answer back is received,
(b) if by telecopy, when transmitted to the telecopy number for such party
(and all such communications sent by telecopy shall be confirmed promptly
thereafter by personal delivery or mailing in accordance with the provisions
of this section; PROVIDED, THAT any requirement in this parenthetical shall
not affect the date on which such telecopy shall be deemed to have been
delivered), (c) if by mail, on the third Business Day after it is enclosed in
an envelope, properly addressed to such party, properly stamped, sealed, and
deposited in the appropriate official postal service, or (d) if by any other
means, when actually delivered to such party. Until changed by notice
pursuant hereto, the address (and telex and telecopy numbers, if any) for
Administrative Agent and each Lender, Administrative Agent, and other Agents
is set forth on SCHEDULE 2.1, and for any Borrower and its Subsidiaries is
the address set forth by such Borrower's signature on the signature page of
this Agreement or any supplement hereto executed and delivered in accordance
with SECTIONS 2.2 or 7.5, and for each Guarantor is the address set forth by
such Guarantor's signature on the signature page of its Guaranty. A copy of
each communication to Administrative Agent shall also be sent to Haynes and
Boone, LLP, 901 Main Street, Suite 3100, Dallas, Texas 75202, Fax:
214/651-5940, Attn: Karen S. Nelson. A copy of each communication to Borrower
shall also be sent to Pate, Kempf & Knarr, Two Leadership Square, Suite 418,
211 N. Robinson, Oklahoma City, Oklahoma 73102, Fax: 405/232-3930, Attn:
Collier Pate.

         13.4 FORM AND NUMBER OF DOCUMENTS. Each agreement, document,
instrument, or other writing to be furnished under any provision of this
Agreement must be in form and substance and in such number of counterparts as
may be reasonably satisfactory to Administrative Agent and its counsel.

         13.5 EXCEPTIONS TO COVENANTS. No Loan Party or DCCLP shall take any
action or fail to take any action which is permitted as an exception to any
of the covenants contained in any Loan Paper if such action or omission would
result in the breach of any other covenant contained in any of the Loan
Papers.

         13.6 SURVIVAL. All covenants, agreements, undertakings,
representations, and warranties made in any of the Loan Papers shall survive
all closings under the Loan Papers and, EXCEPT as otherwise indicated, shall
not be affected by any investigation made by any party. All rights of, and
provisions relating to, reimbursement and indemnification of Administrative
Agent, any Agent, or any Lender shall survive termination of this Agreement
and payment in full of the Obligation.

         13.7 GOVERNING LAW. THE LOAN PAPERS HAVE BEEN ENTERED INTO PURSUANT
TO SECTION 5-1401 OF THE NEW YORK GENERAL OBLIGATIONS LAW AND THE SUBSTANTIVE
LAWS OF THE STATE OF NEW YORK (EXCEPT TO THE EXTENT THE LAWS OF ANOTHER
JURISDICTION GOVERN THE CREATION, PERFECTION, VALIDITY, OR ENFORCEMENT OF
LIENS UNDER THE COLLATERAL DOCUMENTS) AND THE APPLICABLE FEDERAL LAWS OF THE
UNITED STATES OF AMERICA SHALL GOVERN THE VALIDITY, CONSTRUCTION, ENFORCEMENT
AND INTERPRETATION OF THIS CREDIT AGREEMENT AND ALL OF THE OTHER LOAN PAPERS.

         13.8 INVALID PROVISIONS. If any provision in any Loan Paper is held
to be illegal, invalid, or unenforceable, such provision shall be fully
severable; the appropriate Loan Paper shall be construed and enforced as if
such provision had never comprised a part thereof; and the remaining
provisions thereof shall remain in full force and effect and shall not be
affected by such provision or by its severance therefrom. Administrative
Agent, Lenders, DCCLP, and each Loan Party to such Loan Paper agree to
negotiate, in good

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faith, the terms of a replacement provision as similar to the severed
provision as may be possible and be legal, valid, and enforceable.

         13.9  ENTIRETY. THE RIGHTS AND OBLIGATIONS OF THE LOAN PARTIES,
DCCLP, LENDERS, AND AGENTS SHALL BE DETERMINED SOLELY FROM WRITTEN
AGREEMENTS, DOCUMENTS, AND INSTRUMENTS, AND ANY PRIOR ORAL AGREEMENTS BETWEEN
SUCH PARTIES ARE SUPERSEDED BY AND MERGED INTO SUCH WRITINGS. THIS AGREEMENT
(AS AMENDED IN WRITING FROM TIME TO TIME) AND THE OTHER WRITTEN LOAN PAPERS
EXECUTED BY ANY LOAN PARTY, DCCLP, ANY LENDER, AND/OR ANY AGENT, (TOGETHER
WITH ALL COMMITMENT LETTERS AND FEE LETTERS ONLY AS THEY RELATE TO THE
PAYMENT OF FEES AFTER THE CLOSING DATE) REPRESENT THE FINAL AGREEMENT BETWEEN
THE LOAN PARTIES, DCCLP, LENDERS, AND AGENTS, AND MAY NOT BE CONTRADICTED BY
EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS BY SUCH
PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN SUCH PARTIES.

         13.10 JURISDICTION; VENUE; SERVICE OF PROCESS; JURY TRIAL. BORROWER
AND EACH GUARANTOR (BY EXECUTION OF A GUARANTY), IN EACH CASE FOR ITSELF, ITS
SUCCESSORS AND ASSIGNS, HEREBY (A) IRREVOCABLY SUBMITS TO THE NONEXCLUSIVE
JURISDICTION OF THE STATE (PURSUANT TO SECTION 5-1402 OF THE NEW YORK GENERAL
OBLIGATIONS LAW), AND FEDERAL COURTS LOCATED IN THE STATE OF NEW YORK OR IN
THE UNITED STATES COURTS LOCATED IN THE BOROUGH OF MANHATTAN IN NEW YORK
CITY, AND AGREES AND CONSENTS THAT SERVICE OF PROCESS MAY BE MADE UPON IT IN
ANY LEGAL PROCEEDING ARISING OUT OF OR IN CONNECTION WITH THE LOAN PAPERS AND
THE OBLIGATION BY SERVICE OF PROCESS AS PROVIDED BY NEW YORK LAW, (B)
IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY LAW, ANY OBJECTION
WHICH IT MAY NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY LITIGATION
ARISING OUT OF OR IN CONNECTION WITH THE LOAN PAPERS AND THE OBLIGATION
BROUGHT IN ANY SUCH COURT, (C) IRREVOCABLY WAIVES ANY CLAIMS THAT ANY
LITIGATION BROUGHT IN ANY SUCH COURT HAS BEEN BROUGHT IN AN INCONVENIENT
FORUM, (D) AGREES TO DESIGNATE AND MAINTAIN AN AGENT FOR SERVICE OF PROCESS
IN NEW YORK IN CONNECTION WITH ANY SUCH LITIGATION AND TO DELIVER TO
ADMINISTRATIVE AGENT EVIDENCE THEREOF, IF REQUESTED, (E) IRREVOCABLY CONSENTS
TO THE SERVICE OF PROCESS OUT OF ANY OF THE AFOREMENTIONED COURTS IN ANY SUCH
LITIGATION BY THE MAILING OF COPIES THEREOF BY CERTIFIED MAIL, RETURN RECEIPT
REQUESTED, POSTAGE PREPAID, AT ITS ADDRESS SET FORTH HEREIN, (F) IRREVOCABLY
AGREES THAT ANY LEGAL PROCEEDING AGAINST ANY PARTY HERETO ARISING OUT OF OR
IN CONNECTION WITH THE LOAN PAPERS OR THE OBLIGATION SHALL BE BROUGHT IN ONE
OF THE AFOREMENTIONED COURTS, AND (G) IRREVOCABLY WAIVES, TO THE FULLEST
EXTENT PERMITTED BY LAW, ITS RESPECTIVE RIGHTS TO A JURY TRIAL OF ANY CLAIM
OR CAUSE OF ACTION BASED UPON OR ARISING OUT OF ANY LOAN PAPER OR THE
TRANSACTIONS CONTEMPLATED THEREBY. The scope of each of the foregoing waivers
is intended to be all-encompassing of any and all disputes that may be filed
in any court and that relate to the subject matter of this transaction,
including, without limitation, contract claims, tort claims, breach of duty
claims, and all other common law and statutory claims. The Loan Parties,
DCCLP, and each other party to this Agreement acknowledge that this waiver is
a material inducement to the agreement of each party hereto to enter into a
business relationship, that each has already relied on this waiver in
entering into this Agreement, and each will continue to rely on each of such
waivers in related future dealings. The Loan Parties, DCCLP, and each other
party to this Agreement warrant and represent that they have reviewed these
waivers with their legal counsel, and that they knowingly and voluntarily
agree to each such waiver following consultation with legal counsel. THE
WAIVERS IN THIS SECTION 13.10 ARE IRREVOCABLE, MEANING THAT THEY MAY NOT BE
MODIFIED EITHER ORALLY OR IN WRITING, AND THESE WAIVERS SHALL APPLY TO ANY
SUBSEQUENT AMENDMENTS, SUPPLEMENTS, AND REPLACEMENTS TO OR OF THIS OR ANY
OTHER LOAN PAPER. In the event of Litigation, this Agreement may be filed as
a written consent to a trial by the court.

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         13.11 AMENDMENTS, CONSENTS, CONFLICTS, AND WAIVERS.

               (a) EXCEPT as otherwise specifically provided, (i) this
         Agreement may only be amended, supplemented, modified, or waived by an
         instrument in writing executed jointly by each Borrower and Required
         Lenders, and, in the case of any matter affecting Administrative Agent
         (EXCEPT removal of Administrative Agent as provided in SECTION 12) by
         Administrative Agent, and may only be supplemented by documents
         delivered or to be delivered in accordance with the express terms
         hereof, and (ii) the other Loan Papers may only be the subject of an
         amendment, modification, or waiver if Borrower, any affected Loan Party
         (or DCCLP, if affected), and Required Lenders, and, in the case of any
         matter affecting Administrative Agent (EXCEPT as set forth above),
         Administrative Agent, have approved same.

               (b) Any amendment or supplement to, or consent or waiver
         under, this Agreement or any Loan Paper which purports to accomplish
         any of the following must be by an instrument in writing executed by
         each Borrower and executed (or approved, as the case may be) by each
         Lender affected thereby, and, in the case of any matter affecting
         Administrative Agent, by Administrative Agent: (i) extends the due
         date or reduces the amount of any scheduled payment of the
         Obligation or any scheduled reduction of the Commitment beyond the
         date specified in the Loan Papers; (ii) reduces the interest rate or
         decreases the amount of interest, fees, or other sums payable to
         Administrative Agent or Lenders hereunder (EXCEPT such reductions as
         are contemplated by this Agreement); (iii) change the percentage of
         the Commitment or of the Principal Debt which shall be required for
         Lenders or any of them to take any action under this SECTION 13.11
         or any other provision of this Agreement or any Loan Paper; or (iv)
         EXCEPT as otherwise permitted by any Loan Paper, waives compliance
         with, amends, or releases (in whole or in part) any material
         Guaranty or releases (in whole or in part) any material Collateral
         for the Obligation; or (v) changes this CLAUSE (b) or any other
         matter specifically requiring the consent of all Lenders hereunder.
         Without the consent of such Lender, no Lender's Committed Sum may be
         increased (EXCEPT increases effected as a result of the increases in
         the Available Commitment upon satisfaction of the related conditions
         precedent thereto).

               (c) Any conflict or ambiguity between the terms and provisions
         herein and terms and provisions in any other Loan Paper shall be
         controlled by the terms and provisions herein.

               (d) No course of dealing nor any failure or delay by
         Administrative Agent, any Lender, or any of their respective
         Representatives with respect to exercising any Right of
         Administrative Agent or any Lender hereunder shall operate as a
         waiver thereof. A waiver must be in writing and signed by
         Administrative Agent and Required Lenders (or by all Lenders, if
         required hereunder) to be effective, and such waiver will be
         effective only in the specific instance and for the specific purpose
         for which it is given.

         13.12 MULTIPLE COUNTERPARTS. This Agreement may be executed in a
number of identical counterparts, each of which shall be deemed an original
for all purposes and all of which constitute, collectively, one agreement;
but, in making proof of this Agreement, it shall not be necessary to produce
or account for more than one such counterpart. It is not necessary that each
Lender execute the same counterpart SO LONG AS identical counterparts are
executed by Borrower, Parent, each Lender, and Administrative Agent. This
Agreement shall become effective when counterparts hereof shall have been
executed and delivered to Administrative Agent by each Lender, Administrative
Agent, and Borrower, or,

                                       78
<PAGE>

when Administrative Agent shall have received telecopied, telexed, or other
evidence satisfactory to it that such party has executed and is delivering to
Administrative Agent a counterpart hereof.

         13.13 SUCCESSORS AND ASSIGNS; ASSIGNMENTS AND PARTICIPATIONS.

               (a) This Agreement shall be binding upon, and inure to the
         benefit of the parties hereto and their respective successors and
         assigns, EXCEPT THAT (i) no Borrower may, directly or indirectly,
         assign or transfer, or attempt to assign or transfer, any of its
         Rights, duties or obligations under any Loan Papers without the express
         written consent of all Lenders, and (ii) EXCEPT as permitted under this
         Section, no Lender may transfer, pledge, assign, sell any participation
         in, or otherwise encumber its portion of the Obligation.

               (b) Each Lender may assign to one or more Eligible Assignees
         all or a portion of its Rights and obligations under this Agreement and
         the other Loan Papers (including, without limitation, all or a portion
         of its Borrowings and its Notes); PROVIDED, HOWEVER, that:

                   (i)   each such assignment shall be to an Eligible Assignee;

                   (ii)  EXCEPT in the case of an assignment of all of a
               Lender's Rights and obligations under this Agreement and the
               other Loan Papers, any such partial assignment shall be in an
               amount at least equal to $5,000,000;

                   (iii) each such assignment by a Lender shall be of a
               constant, and not varying, percentage of all of its Rights and
               obligations under this Agreement and the Notes (to the extent
               any Principal Debt owed to such assigning Lender is evidenced
               by a Note or Notes);

                   (iv)  the parties to such assignment shall execute and
               deliver to the Administrative Agent for its acceptance an
               Assignment and Acceptance Agreement substantially in the form
               of EXHIBIT F, TOGETHER WITH any Notes (to the extent any
               Principal Debt owed to such assigning Lender is evidenced by a
               Note or Notes) subject to such assignment and a processing fee
               of $3,500, PROVIDED HOWEVER, that with respect to an
               assignment by a Lender to an Affiliate of such Lender, the
               processing fee shall be $1,500 (unless otherwise agreed by
               Administrative Agent); and

                   (v)   SO LONG AS any Lender is an Agent under this
               Agreement, such Lender (or an Affiliate of such Lender) shall
               retain an economic interest in the Loan Papers, will not
               assign all of its Rights, duties, or obligations under the
               Loan Papers, EXCEPT to an Affiliate of such Lender, and will
               not enter into any Assignment and Acceptance Agreement that
               would have the effect of such Lender assigning all of its
               Rights, duties, or obligations under the Loan Papers to any
               Person OTHER THAN an Affiliate of such Lender.

         Upon execution, delivery, and acceptance of such Assignment and
         Acceptance Agreement, the assignee thereunder shall be a party hereto
         and, to the extent of such assignment, have the obligations, Rights,
         and benefits of a Lender under the Loan Papers and the assigning Lender
         shall, to the extent of such assignment, relinquish its rights and be
         released from its obligations under the Loan Papers. Upon the
         consummation of any assignment pursuant to this Section, but only upon
         the request of the assignor or assignee made through Administrative
         Agent, Borrower shall issue appropriate Notes to the assignor and the
         assignee, reflecting such Assignment and Acceptance. If the assignee is
         not incorporated under the laws of the United States of America or a
         state thereof, it

                                       79
<PAGE>

         shall deliver to Borrower and Administrative Agent certification as
         to exemption from deduction or withholding of Taxes in accordance
         with Section 4.6.

               (c) Administrative Agent shall maintain at its address
         referred to in SECTION 13.3 a copy of each Assignment and Acceptance
         Agreement delivered to and accepted by it and a register for the
         recordation of the names and addresses of the Lenders and the
         Commitment, and principal amount of the Borrowings owing to, each
         Lender from time to time (the "REGISTER"). The entries in the
         Register shall be conclusive and binding for all purposes, absent
         manifest error, and any Borrower, Administrative Agent, and Lenders
         may treat each Person whose name is recorded in the Register as a
         Lender hereunder for all purposes of the Loan Papers. The Register
         shall be available for inspection by any Borrower or any Lender at
         any reasonable time and from time to time upon reasonable prior
         notice. Upon the consummation of any assignment in accordance with
         this SECTION 13.13, SCHEDULE 2.1 shall automatically be deemed
         amended (to the extent required) by Administrative Agent to reflect
         the names, addresses, and respective Applicable Percentages and
         Committed Sums of the assignor and assignee.

               (d) Upon its receipt of an Assignment and Acceptance Agreement
         executed by the parties thereto, TOGETHER WITH any Notes (to the extent
         any Principal Debt owed to such assigning Lender is evidenced by a Note
         or Notes) subject to such assignment and payment of the processing fee,
         the Administrative Agent shall, if such Assignment and Acceptance has
         been completed and is in substantially the form of EXHIBIT F, (i)
         accept such Assignment and Acceptance Agreement, (ii) record the
         information contained therein in the Register and (iii) give prompt
         notice thereof to the parties thereto.

               (e) Subject to the provisions of this Section and in
         accordance with applicable Law, any Lender may, in the ordinary
         course of its business and in accordance with applicable Law, at any
         time sell to one or more Persons (each a "PARTICIPANT")
         participating interests in its portion of the Obligation. In the
         event of any such sale to a Participant, (i) such Lender shall
         remain a "LENDER" under this Agreement and the Participant shall not
         constitute a "LENDER" hereunder, (ii) such Lender's obligations
         under this Agreement shall remain unchanged, (iii) such Lender shall
         remain solely responsible for the performance thereof, (iv) such
         Lender shall remain the holder of its share of the Principal Debt
         for all purposes under this Agreement, (v) each Borrower and
         Administrative Agent shall continue to deal solely and directly with
         such Lender in connection with such Lender's Rights and obligations
         under the Loan Papers, and (vi) such Lender shall be solely
         responsible for any withholding taxes or any filing or reporting
         requirements relating to such participation and shall hold each
         Borrower and Administrative Agent and their respective successors,
         permitted assigns, officers, directors, employees, agents, and
         representatives harmless against the same. Participants shall have
         no Rights under the Loan Papers, OTHER THAN certain voting Rights as
         provided below. Subject to the following, each Lender shall be
         entitled to obtain (on behalf of its Participants) the benefits of
         SECTION 4 with respect to all participations in its part of the
         Obligation outstanding from time to time SO LONG AS any Borrower
         shall be obligated to pay any amount in excess of the amount that
         would be due to such Lender under SECTION 4 calculated as though no
         participations have been made. No Lender shall sell any
         participating interest under which the Participant shall have any
         Rights to approve any amendment, modification, or waiver of any Loan
         Paper, EXCEPT to the extent such amendment, modification, or waiver
         extends the due date for payment of any amount in respect of
         principal (OTHER THAN mandatory prepayments), interest, or fees due
         under the Loan Papers, reduces the interest rate or the amount of
         principal or fees applicable to the Obligation (EXCEPT such
         reductions as are contemplated by this Agreement), or releases any
         material Guaranty or all or any substantial portion of the
         Collateral for the Obligation under the Loan Papers (EXCEPT such
         releases

                                      80
<PAGE>

         as are contemplated by this Agreement); PROVIDED THAT, in those
         cases where a Participant is entitled to the benefits of SECTION 4
         or a Lender grants Rights to its Participants to approve amendments
         to or waivers of the Loan Papers respecting the matters previously
         described in this sentence, such Lender must either (i) include a
         voting mechanism in the relevant participation agreement or
         agreements, as the case may be, whereby a majority of such Lender's
         portion of the Obligation (whether held by such Lender or
         Participant) shall control the vote for all of such Lender's portion
         of the Obligation or (ii) create another mechanism with Participant
         to avoid any stalemate of, or partial exercise of, any voting Rights
         under the Loan Papers. EXCEPT in the case of the sale of a
         participating interest to another Lender, the relevant participation
         agreement shall not permit the Participant to transfer, pledge,
         assign, sell participations in, or otherwise encumber its portion of
         the Obligation, UNLESS the consent of the transferring Lender (which
         consent will not be unreasonably withheld) has been obtained.

               (f) Notwithstanding any other provision set forth in this
         Agreement, any Lender may at any time assign and pledge all or any
         portion of its Borrowings and its Notes (to the extent any Principal
         Debt owed to such assigning Lender is evidenced by a Note or Notes) to
         any Federal Reserve Bank as collateral security pursuant to Regulation
         A and any Operating Circular issued by such Federal Reserve Bank
         without notice to, or the consent of any Borrower or Administrative
         Agent. No such assignment shall release the assigning Lender from its
         obligations hereunder.

               (g) Any Lender may furnish any information concerning the
         Companies in the possession of such Lender from time to time to
         Eligible Assignees and Participants (including prospective Eligible
         Assignees and Participants).

         13.14 DISCHARGE ONLY UPON PAYMENT IN FULL; REINSTATEMENT IN CERTAIN
CIRCUMSTANCES. The obligations of each Loan Party under the Loan Papers shall
remain in full force and effect until termination of the Commitment and payment
in full of the Principal Debt and of all interest, fees, and other amounts of
the Obligation then due and owing (and termination of all outstanding LCs with
any Lender, if any, UNLESS such Lender shall otherwise consent), EXCEPT that
SECTIONS 4, 11, and 13, and any other provisions under the Loan Papers expressly
intended to survive by the terms hereof or by the terms of the applicable Loan
Papers, shall survive such termination. If at any time any payment of the
principal of or interest on any Note or any other amount payable by any Loan
Party or DCCLP under any Loan Paper is rescinded or must be otherwise restored
or returned upon the insolvency, bankruptcy, or reorganization of such Loan
Party, DCCLP, or otherwise, the obligations of each Loan Party or DCCLP under
the Loan Papers with respect to such payment shall be reinstated as though such
payment had been due but not made at such time.

         13.15 RESTATEMENT OF EXISTING AGREEMENT. The parties hereto agree that,
on the Closing Date, after all conditions precedent set forth in SECTION 7.1
have been satisfied or waived: (a) the Obligation (as defined in this Agreement)
represents, among other things, the restatement, renewal, amendment, extension,
consolidation, and modification of the "OBLIGATION" (as defined in the Existing
Agreement); (b) this Agreement is intended to, and does hereby, restate,
consolidate, renew, extend, amend, modify, supersede, and replace the Existing
Agreement in its entirety; and (c) the Notes, if any, executed pursuant to this
Agreement amend, renew, extend, modify, replace, restate, consolidate,
substitute for, and supersede in their entirety (but do not extinguish, the Debt
arising under) the promissory notes issued pursuant to the Existing Agreement,
if any, which existing promissory notes shall be returned to Administrative
Agent promptly after the Closing Date, marked "CANCELED AND REPLACED," and,
thereafter, delivered by Administrative Agent to Borrower.

                                      81
<PAGE>

                    REMAINDER OF PAGE INTENTIONALLY BLANK.
                            SIGNATURE PAGES FOLLOW.

                                      82
<PAGE>

         Signature Page to that certain Amended and Restated Revolving Credit
Agreement dated as of September 13, 1999, among Logix Communications
Corporation, as Borrower, Bank of America, N.A., as Administrative Agent, and
certain other Agents and Lenders named therein.

         EXECUTED to be effective as of the Closing Date.

Attest:                                LOGIX COMMUNICATIONS CORPORATION

By:                                    By:
   --------------------------------       --------------------------------

   Name:                                  Name:
        ---------------------------            ---------------------------

   Title:                                 Title:
         --------------------------             --------------------------

Mailing Address:

                                 SIGNATURE PAGE

<PAGE>

         Signature Page to that certain Amended and Restated Revolving Credit
Agreement dated as of September 13, 1999, among Logix Communications
Corporation, as Borrower, Bank of America, N.A., as Administrative Agent, and
certain other Agents and Lenders named therein.

         EXECUTED to be effective as of the Closing Date.

                                       BANK OF AMERICA, N.A.,
                                       AS ADMINISTRATIVE AGENT AND AS A LENDER

                                       By:
                                          -------------------------------------

                                          Name:
                                               --------------------------------

                                          Title:
                                                -------------------------------

                                 SIGNATURE PAGE

<PAGE>

         Signature Page to that certain Amended and Restated Revolving Credit
Agreement dated as of September 13, 1999, among Logix Communications
Corporation, as Borrower, Bank of America, N.A., as Administrative Agent, and
certain other Agents and Lenders named therein.

         EXECUTED to be effective as of the Closing Date.

                                       CIBC WORLD MARKETS CORP.,
                                       AS SYNDICATION AGENT

                                       By:
                                          ---------------------------------

                                          Name:
                                               ----------------------------

                                          Title:
                                                ---------------------------

                                       CIBC INC., AS A LENDER

                                       By:
                                          ---------------------------------

                                          Name:
                                               ----------------------------

                                          Title:
                                                ---------------------------

                                 SIGNATURE PAGE

<PAGE>

         Signature Page to that certain Amended and Restated Revolving Credit
Agreement dated as of September 13, 1999, among Logix Communications
Corporation, as Borrower, Bank of America, N.A., as Administrative Agent, and
certain other Agents and Lenders named therein.

         EXECUTED to be effective as of the Closing Date.

                                       TORONTO DOMINION (TEXAS), INC.,
                                       AS DOCUMENTATION AGENT AND AS A LENDER

                                       By:
                                          ---------------------------------

                                          Name:
                                               ----------------------------

                                          Title:
                                                ---------------------------

                                 SIGNATURE PAGE
<PAGE>

         Signature Page to that certain Amended and Restated Revolving Credit
Agreement dated as of September 13, 1999, among Logix Communications
Corporation, as Borrower, Bank of America, N.A., as Administrative Agent, and
certain other Agents and Lenders named therein.

                       GUARANTOR ACKNOWLEDGMENT FOR PARENT

         As an inducement to Administrative Agent and Lenders to execute and
deliver this Amended and Restated Revolving Credit Agreement (the
"AGREEMENT"), the undersigned hereby (i) acknowledges that it has received
this Agreement and consents to the foregoing, (ii) agrees that certain of the
representations, covenants, and indemnification provisions contained in
SECTIONS 8, 9, and 11.12 apply to the undersigned, (iii) agrees to provide
all information and take all action requested pursuant to the Agreement, and
(iv) agrees that the execution and delivery of this acknowledgment shall in
no way release, diminish, impair, reduce, or otherwise affect the obligations
and liabilities of the undersigned under the Guaranty dated April 7, 1999
(the "Guaranty"), and the Pledge, Assignment, and Security Agreement dated
April 7, 1999 (the "SECURITY AGREEMENT"), executed by the undersigned, in
favor of Administrative Agent and Lenders, which Guaranty and Security
Agreement shall continue in full force and effect. This consent and agreement
shall be binding upon the undersigned, and its successors and assigns, and
shall inure to the benefit of Administrative Agent and Lenders, and their
respective successors and assigns.

         EXECUTED to be effective as of the Closing Date.

                                       LOGIX COMMUNICATIONS ENTERPRISES, INC.

                                       By:
                                          ---------------------------------

                                          Name:
                                               ----------------------------

                                          Title:
                                                ---------------------------

                                 SIGNATURE PAGE<PAGE>

                               SEVERANCE AGREEMENT

     This Severance Agreement ("Agreement") is entered into between William
J. Hoffman, Jr. ("Hoffman") and Logix Communications Enterprises, Inc.
("Logix").

     Whereas, the employment relationship between Hoffman and Logix has been
severed and the parties wish to document the terms of the agreement between
them concerning severance benefits.

     Now, therefore, it is agreed:

1.  DATE OF SEPARATION.  The date of separation of employment and the
effective date of this Agreement is March 15, 2000.

2.  SEVERANCE PAYMENTS.  Subject to the terms of this Agreement and
applicable tax and withholding requirements, Hoffman shall

    (i)   be paid his base salary, plus 34% of his base salary in lieu of all
incentive compensation, each month for a period ending on March 14, 2003 (the
"Payment Period").

    (ii)  receive continued health insurance coverage during the Payment
Period, provided that such coverage may be changed or reduced so long as the
coverage provided Hoffman is consistent with the coverage provided to Logix
employees generally.

    (iii) be entitled to continued participation in the Logix 401(k)
retirement plan during the Payment Period, provided that the 401(k) plan may
be changed or reduced so long as such changes or reductions apply to all
401(k) participants generally.

The obligation in (ii) above shall automatically cease at such time as
Hoffman obtains employment and qualifies for insurance coverage with an
employer (including a company controlled by Hoffman) which offers or could
offer substantially the same health and medical coverage.  At the sole option
of Logix it may elect at any time during the Payment Period to accelerate the
amount payable under (i) above and pay the full amount for all remaining
months in one lump payment, discounted to present value at the rate of 12%
per annum, and in the event of such lump sum payment the obligations in (ii)
and (iii) above shall also cease.  Such lump sum payment shall not shorten
the Payment Period as it applies to the other provisions of this Agreement.

Hoffman may retain his cell phone and the Oak Tree Country Club membership,
but all expenses of such telephone and membership after the effective date of
this Agreement shall be solely the responsibility of Hoffman.  Hoffman shall

<PAGE>

change the responsible account party to himself as soon as possible, and
Hoffman indemnifies and saves Logix harmless from all such expenses.  Hoffman
may also retain internet equipment located in his house.

Except as expressly set forth above, all benefits, reimbursements  and
perquisities heretofore provided to Hoffman, including, without limitation,
life and disability insurance, club memberships, telephone and internet
service, and credit cards, shall terminate on the effective date of this
Agreement, and all property, equipment, files and information of Logix shall
be returned to Logix.

3.  STOCK OPTION PROVISIONS.

(a) VESTED OPTIONS.  Logix shall pay Hoffman the sum of $50,000 as
compensation for relinquishment and return to Logix of 208,500 Logix
Incentive Stock Options previously granted by Logix which have vested.  In
consideration of this Agreement Hoffman agrees that all rights that he may
have concerning all vested Logix options are null and void and of no effect
and such options are returned to Logix.  Such amount shall be paid on or
before May 1, 2000.

(b) UNVESTED OPTIONS.  All terms and conditions of the Logix Incentive Stock
Option Plan and the option agreements between Logix and Hoffman entered into
under such plan, except as expressly modified in this Agreement, remain in
full force and effect and unchanged.  Hoffman acknowledges that none of the
Incentive Stock Options granted to Hoffman by Logix, other than the vested
options provided for in subparagraph (a) above, have vested, and that due to
his separation  no other Logix options will ever vest per the terms of the
Logix option plan and the agreements between Hoffman and Logix governing such
options, and that the unvested options granted are null and void and of no
effect and are relinquished and returned to Logix.

(c)  TEXAS UTILITIES TRANSACTION.  If, on or before April 30, 2000, a "Texas
Utilities Transaction" (as hereinafter defined) occurs between Logix or its
shareholders and Texas Utilities (which as used herein shall include Texas
Utilities or any person or entity directly or indirectly controlling,
controlled by or under common control with Texas Utilities), the provisions
of subparagraphs (a) and (b) above shall be inoperative.  Instead of and in
lieu of the provisions of subparagraphs (a) and (b) above, Hoffman shall have
the rights that he would have had if he were still employed by Logix under
the "change of control" provisions of the Logix Incentive Stock Option Plan
and his options had not terminated due to his severance.  For purposes of
this subsection (c), a "Texas Utilities Transaction" shall mean the
consummation (or the execution of a letter of intent or definitive agreement
on or before April 30, 2000 which subsequently results in consummation) by
Logix or a majority in interest of Logix's shareholders of (i) a sale to
Texas Utilities of at least 51% of the capital stock of Logix, (ii) a merger,
consolidation or similar combination of Logix with Texas Utilities, or (iii)
a sale to Texas Utilities of at least 51% of the assets of Logix.

                                                                         Page 2
<PAGE>

(d)  DOBSON AGREEMENTS UNAFFECTED.  This Agreement is between Hoffman and
Logix only and does not affect any rights or obligations of Hoffman under any
other agreement arising out of or related to his employment by Dobson
Communications Corporation ("Dobson").  Without limiting the generality of
such statement, this Agreement and the general release contained in this
Agreement shall have no effect on any rights or obligations under or as a
result of his interest in (i) the Consulting Agreement between Dobson and
Hoffman substantially in the form of Exhibit "A" hereto, (ii) Dobson's 1996
Stock Option Plan as amended, (iii) DCC PIK, L.L.C., or (iv) Dobson Equity,
L.L.C.

4.  CONFIDENTIALITY AND NO DISPARAGEMENT.  In consideration of the Severance
Payments, Hoffman agrees that he will not disclose the terms of this
Agreement and will not make or publish any negative comments or disparaging
remarks about Logix or any of its direct or indirect shareholders, or any of
its officers or directors.  Logix may disclose the existence and terms of
this Agreement as required by law or as necessary for its business purposes.
Logix agrees that none of Stephen Dobson, Everett Dobson or Bert Pharis, so
long as they are officers, directors or employees of Logix, will make any
statement for the purpose of harming Hoffman; provided, however, this shall
in no way limit said officers or Logix from candidly describing the
historical performance of Logix and the reasons therefore, even if such
information would reflect poorly on Hoffman, nor shall this provision in any
event or in any way create any liability to Hoffman arising out of any
statement with respect to Hoffman which is true.

5.  NON-DISCLOSURE AND NON-USE OF CONFIDENTIAL INFORMATION AND TRADE SECRETS.
Hoffman agrees and acknowledges that Logix's confidential information and
trade secrets belong to and are of great value to Logix.  As used herein
"Logix confidential information and trade secrets" includes but is not
limited to the names, addresses, telephone numbers and service and product
preferences of Logix customers and potential customers, as well as other
customer information, financial information, cost and pricing information,
business plans, expansion plans (including Mongoose information), Logix
services information, Logix product and product development information, and
Logix sales and marketing plans and programs, but does not include
information which at the effective date of this Agreement is generally known
to Logix's competitors.  In consideration of the Severance Payments, Hoffman
agrees not to disclose to any third party or use any such confidential
information or trade secrets of Logix. Hoffman further represents and
warrants that he has no written confidential information or trade secrets of
Logix or computer files containing the same in his possession, and he will
not remove from Logix's premises any property, customer lists, documents,
files, records, notes, correspondence or other papers (including copies of
these materials) relating to the business of Logix, except with the
permission of Logix.

6.  NON-SOLICITATION OF LOGIX'S EMPLOYEES OR CUSTOMERS.  In consideration of
the Severance Payments

                                                                          Page 3
<PAGE>

    (i)   Hoffman agrees that he will not for any reason, directly or
indirectly, in any way, solicit, induce, influence, refer, divert or
participate in the referral, solicitation, or diversion of any customer of
Logix to switch to or contract for telecommunication services provided by any
other company in any of the geographic areas and LATAs (Local Access and
Transport Areas) in which Logix transacts business.

    (ii)  Hoffman agrees that he will not, either directly or indirectly,
separately or in association with others, hire, solicit, persuade or entice
any Logix employee to discontinue employment with Logix.

7.  TIME LIMIT OF HOFFMAN'S COVENANTS.  Hoffman's obligations under paragraph
4 of this Agreement shall never terminate.  Hoffman's obligations under
paragraphs 5 and 6 of this Agreement shall terminate at the termination of
the Payment Period.  Hoffman acknowledges that he will be able to earn a
livelihood without violating the foregoing restrictions and that the
foregoing restrictions are reasonable both in geographical scope and in time.

8.  RELEASE OF ALL CLAIMS.  By the execution of this Agreement, Hoffman
agrees to and does hereby release and disc harge and forever forego any
claims, demands, suits, causes of action or other legal rights which he has
or may have against Logix, Dobson Communications Corporation, their
affiliates and related companies, employees, agents, owners, directors,
officers or other representatives which presently exist as a result of his
employment with Logix or  result from the termination of his employment with
Logix. These claims include, but are not limited to, claims under The Civil
Rights Act of 1964, The Civil Rights Act of 1991, The Age Discrimination in
Employment Act, The Older Workers Benefits Protection Act, The Americans with
Disability Act, and any other claim for breach of contract, express or
implied, or for liability sounding in tort, and any claim under any state or
federal statute or regulation.  Hoffman acknowledges that he has received
monetary consideration for waiver of any claims that he may have under The
Older Workers Benefits Protection Act and The Age Discrimination in
Employment Act.  Hoffman acknowledges that his signing of this Agreement will
serve as his acknowledgement of the receipt of and the acceptance of the
considerations described herein as the complete and final settlement and full
compensation for any claims or damages of whatever nature suffered in
connection with his employment with and the termination of that employment at
Logix. This release shall be considered to be final and shall be a complete
bar to any legal or equitable action which might be brought by Hoffman in
connection with his employment with or the termination of that employment at
Logix, except for (i) actions brought to enforce the terms of this Agreement,
(ii) those matters set out in paragraphs 3(c) and 3(d) above, (iii) the Logix
401(k) retirement plan and other benefits set out in paragraph 2 above, or
(iv) any expense reimbursement requests by Hoffman that are unprocessed on
the date of this Agreement.

                                                                          Page 4
<PAGE>

9.  SEVERABILITY.  In the event that any provision or portion of this
Agreement shall be determined to be invalid or unenforceable for any reason,
the remaining provisions of this Agreement shall be unaffected thereby and
shall remain in full force and effect.  In the event that any provision or
portion of this Agreement shall be determined to be invalid or unenforceable
for any reason, the invalid or unenforceable provision shall not effect any
other provision of this Agreement, and this Agreement shall be construed as
if the invalid or unenforceable provision had never been contained in it.

10. AGREEMENT SUBJECT TO NON-VIOLATION OF FINANCING AGREEMENTS.  The
obligations of Logix under this agreement are subject to any covenants
contained in any present financing, equity sale, or other existing agreement
entered into for the purpose of raising operating capital.  In the event any
such covenant impedes Logix's ability to perform this Agreement (considered
in conjunction with similar agreements with other terminated employees),
Logix shall nevertheless perform to the extent possible without violating the
covenant, and the balance of Logix's performance shall be deferred until it
may be permissibly taken.

11.  BREACH OF AGREEMENT.  Any breach of any term or condition of this
Agreement which is uncured before the 30th day following reasonable notice
given to Hoffman by Logix of the default will release Logix from any further
liability to make the Severance Payments or provide benefits to Hoffman, but
will not release Hoffman from his obligations under this Agreement.

12.  GOVERNING LAW.  This Agreement shall be governed by and construed in
accordance with the laws of the State of Oklahoma.

13.  ENTIRE AGREEMENT, NO ORAL MODIFICATION.  This Agreement states the
entire agreement between the parties concerning the premises, and no
amendment, waiver or modification of any provision of this Agreement shall be
valid unless in writing and executed by the parties.

     In Witness Whereof, the parties have executed this Agreement with the
intent to be bound and obligated to the terms of the Agreement.

                             Logix Communications Enterprises, Inc.

                             By:
                                --------------------------
                                Albert H. Pharis, Jr., CEO

                                --------------------------
                                William J. Hoffman, Jr.

                                                                          Page 5

<PAGE>

                                   EXHIBIT "A"

                         Dobson Communications Corporation
                             13439 Broadway Extension
                          Oklahoma City, Oklahoma  73114

March 29, 2000

William J. Hoffman, Jr.
2017 Wickshire Circle
Edmond, OK  73013

Re:  Employment Agreement

Dear Chip:

This letter will constitute the employment agreement with Dobson
Communications Corporation ("Dobson") for consulting services to be performed
by you as an employee of Dobson.  The services to be performed will be those
that are mutually agreed between us from time to time.  Your compensation
will be $1,000 per year to be paid annually in arrears, without proration for
partial years, and will be subject to applicable withholding.  You will have
no employee benefits other than the specified yearly compensation and
continuation of your vesting in the stock options previously granted to you,
as such vesting is provided for under the terms and conditions of the Dobson
Communications Corporation 1996 Stock Option Plan, as amended ("Dobson Option
Plan").

This agreement will be for a period of one year from January 1, 2000, and
will be renewed automatically a maximum of two renewals on each anniversary
of that date, unless you give notice to Dobson that you elect to not renew on
or before the expiration of the agreement.  This agreement may be immediately
terminated by Dobson at any time for cause, which shall include, but not be
limited to, any of the actions specified in paragraph 7 of the Dobson Option
Plan.

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<PAGE>

This agreement is contingent upon your execution of a severance agreement
containing a general release of Logix Communications Enterprises, Inc.
("Logix") concerning the termination of your employment with Logix, and your
full and continued compliance with that agreement.  Your employment hereunder
with Dobson is not contingent upon continued employment with Logix or its
affiliates.  If this agreement is acceptable to you, please sign this letter
in the space provided below.

Sincerely,

Everett Dobson

AGREED:

---------------------------
  William J. Hoffman, Jr.

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