Document:

Amend. #3 to Second Amended & Restated Master Loan Purchase Agreement

 EXHIBIT 10.7 
  

  
 NEW CENTURY MORTGAGE CORPORATION 
 NC CAPITAL CORPORATION 
 Seller 
  
 AND

  
 CDC MORTGAGE CAPITAL INC. 
 Buyer 
  
 AMENDMENT NO. 3 
 Dated as of September 30, 2003 
  
 TO 
  
 SECOND AMENDED AND RESTATED MASTER REPURCHASE AGREEMENT 
 Dated as of June 23, 2003 
  

 AMENDMENT NO. 3 (this “Amendment”), dated as of September 30, 2003, by and among New
Century Mortgage Corporation (“NCMC”), NC Capital Corporation (“NCCC” and, together with NCMC, the “Seller”), and CDC Mortgage Capital Inc. (“Buyer”), to the Second Amended and
Restated Master Repurchase Agreement, dated as of June 23, 2003, by and among Seller and Buyer (the “Agreement”). 
  
 RECITALS 
  
 WHEREAS, Seller and Buyer have entered into the Agreement; 
  
 WHEREAS the Seller has requested the Buyer to agree to amend certain provisions of the Agreement as set forth in this Amendment. The Buyer hereto is willing to agree to such amendments, but only on the terms and
subject to the conditions set forth in this Amendment. 
  
 NOW,
THEREFORE, in consideration of the premises and for other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the Seller and the Buyer hereby agree as follows: 
  
 Section 1. Amendments. 
  
 (a) Defined Terms. Unless otherwise defined herein, terms defined in
the Agreement are used herein as therein defined. 
  
 (b) Section
11(o) of the Agreement is hereby amended and restated in its entirety to read: 
  
 “Leverage Ratio. Guarantor will not permit (i) the Quarterly Average Leverage Ratio for any period of measurement to be greater than 10.0 to 1.0, (ii) the Daily Leverage Ratio on any date to be greater
than 15.0 to 1.0, or (iii) the Adjusted Leverage Ratio as of the last day of each fiscal quarter to be greater than 12.0 to 1.0. NCMC will not permit the Leverage Ratio of NCMC to be greater than 10.0 to 1.0 as of the last day of each fiscal quarter
of NCMC.” 
  
 (c) Section 11(o) of the Agreement is hereby
amended and restated in its entirety to read: 
  
 “Restricted Payments. Guarantor, NCCC and NCMC will not make any Restricted Payments, other than (a) dividends paid by Guarantor on its Common Stock not to exceed $0.60 per share in any calendar year, or dividends in the form of
Common Stock if such dividend is used to accomplish a stock split, (b) repurchases by Guarantor of up to 5,000,000 shares of its Common Stock on the open market or in negotiated transactions; and (c) dividends paid by NCMC to Guarantor to enable
Guarantor to pay dividends as provided in clause (a) above; provided, that in each case both before and after giving effect to such dividends or repurchases, Guarantor, NCCC and NCMC are in compliance 

 with the covenants set forth in Section 11 of this Agreement and no Event of Default or Default has
occurred and is continuing.” 
  
 Section 2. Effectiveness
of the Amendment. The Amendment shall become effective upon receipt by the Buyer of evidence satisfactory to the Buyer that this Amendment has been executed and delivered by the Seller. 
  
 Section 3. Ratification of Agreement. As amended by this Amendment,
the Agreement is in all respects ratified and confirmed and the Agreement as so modified by this Amendment shall be read, taken, and construed as one and the same instrument. 
  
 Section 4. Representations and Warranties. To induce the Buyer to enter into this Amendment, the Seller hereby
represents and warrants to the Buyer that, after giving effect to the amendments provided for herein, the representations and warranties contained in the Agreement and the other Repurchase Documents will be true and correct in all material respects
as if made on and as of the date hereof and that no Default or Event of Default will have occurred and be continuing. 
  
 Section 5. No Other Amendments. Except as expressly amended hereby, the Agreement and the other Repurchase Documents shall remain in full force and
effect in accordance with their respective terms, without any waiver, amendment or modification of any provision thereof. 
  
 Section 6. Counterparts. This Amendment may be executed in any number of counterparts, each of which so executed shall be deemed to be an original,
but all of such counterparts shall together constitute but one and the same instrument. 
  
 Section 7. Expenses. The Seller agrees to pay and reimburse the Buyer for all of the out-of-pocket costs and expenses incurred by the Buyer in connection with the preparation, execution and delivery of this
Amendment, including, without limitation, the fees and disbursements of its attorneys. 
  
 Section 8. GOVERNING LAW. 
  
 THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO CONFLICTS OF LAW PRINCIPLES. 
  

 -2- 

 IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed by their respective
officers as of the day and year first above written. 
  

	 CDC MORTGAGE CAPITAL INC., as
     Buyer under the Agreement
	 	 	 	 NEW CENTURY MORTGAGE
     CORPORATION, as Seller under the Agreement

					
	By:	 	 /s/    JOE PISCINA

	 	 	 	By:	 	 /s/    PATRICK FLANAGAN

	 	 	 Name: Joe Piscina
 Title: Managing
Director
	 	 	 	 	 	 Name: Patrick Flanagan
 Title:
President

				
	By:	 	 /s/    KATHY LYNCH

	 	 	 	 NC CAPITAL CORPORATION,
     as Seller under the Agreement

	 	 	 Name: Kathy Lynch
 Title:
Director
	 	 	 
					
	 	 	 	 	 	 	By:	 	 /s/    PATRICK FLANAGAN

	 	 	 	 	 	 	 	 	 Name: Patrick Flanagan
 Title: Chief
Executive Officer 

 The undersigned guarantor hereby consents and agrees to the foregoing Amendment: 
  

	 NEW CENTURY FINANCIAL
     CORPORATION

		
	 By:
	 	 /s/    PATRICK FLANAGAN

	 	 	 Name: Patrick Flanagan
 Title: Executive
Vice President<PAGE>

                                                                    EXHIBIT 10.1

                                                                  EXECUTION COPY

                                 $1,642,500,000

            AMENDED AND RESTATED CREDIT AND EXCHANGE OFFER AGREEMENT

                                      Among

                       CROWN CASTLE OPERATING COMPANY and
                CROWN CASTLE INTERNATIONAL CORP. de PUERTO RICO,
                              each, as a Borrower,

                        CROWN CASTLE INTERNATIONAL CORP.,

                               The Several Lenders
                        from Time to Time Parties Hereto

                                       and

                              JPMORGAN CHASE BANK,
                             as Administrative Agent

                           Dated as of March 15, 2000,
                 as Amended and Restated as of October 10, 2003

                           J.P. MORGAN SECURITIES INC.
                                       and
                      MORGAN STANLEY SENIOR FUNDING, INC.,
                   as Co-Lead Arrangers and Joint Bookrunners

<PAGE>

                                TABLE OF CONTENTS
                                -----------------

                                                                            Page

SECTION 1. DEFINITIONS.........................................................1
     1.1    Defined Terms......................................................1
     1.2    Other Definitional Provisions.....................................21

SECTION 2. AMOUNT AND TERMS OF COMMITMENTS....................................22
     2.1    Loans; Commitments................................................22
     2.2    Procedure for Borrowing...........................................23
     2.3    Repayment of Loans; Early Maturity................................23
     2.4    Swingline Commitment..............................................24
     2.5    Procedure for Swingline Borrowing;
            Refunding of Swingline Loans......................................25
     2.6    Commitment Fees, etc..............................................26
     2.7    Termination or Reduction of Commitments...........................26
     2.8    Optional Prepayments..............................................26
     2.9    Mandatory Prepayments and Commitment Reductions...................27
     2.10   Conversion and Continuation Options...............................28
     2.11   Limitations on Eurodollar Tranches................................28
     2.12   Interest Rates and Payment Dates..................................28
     2.13   Computation of Interest and Fees..................................29
     2.14   Inability to Determine Interest Rate..............................29
     2.15   Pro Rata Treatment and Payments...................................29
     2.16   Requirements of Law...............................................31
     2.17   Taxes.............................................................32
     2.18   Indemnity.........................................................33
     2.19   Change of Lending Office..........................................34
     2.20   Replacement of Lenders............................................34

SECTION 3. LETTERS OF CREDIT..................................................34
     3.1    L/C Commitment....................................................34
     3.2    Procedure for Issuance of Letter of Credit........................35
     3.3    Fees and Other Charges............................................35
     3.4    L/C Participations................................................35
     3.5    Reimbursement Obligation of the Borrower..........................36
     3.6    Obligations Absolute..............................................36
     3.7    Letter of Credit Payments.........................................36
     3.8    Applications......................................................37

SECTION 4. REPRESENTATIONS AND WARRANTIES.....................................37
     4.1    Financial Condition...............................................37
     4.2    No Change.........................................................38
     4.3    Corporate Existence; Compliance with Law..........................38
     4.4    Corporate Power; Authorization; Enforceable Obligations...........38
     4.5    No Legal Bar......................................................39
     4.6    Litigation........................................................39
     4.7    No Default........................................................39
     4.8    Ownership of Property; Liens......................................39
     4.9    Intellectual Property.............................................39
     4.10   Taxes.............................................................39
     4.11   Federal Regulations...............................................39
     4.12   Labor Matters.....................................................40

                                       (i)

<PAGE>

     4.13   ERISA.............................................................40
     4.14   Investment Company Act; Other Regulations.........................40
     4.15   Subsidiaries......................................................40
     4.16   Use of Proceeds...................................................40
     4.17   Environmental Matters.............................................40
     4.18   Accuracy of Information, etc......................................41
     4.19   Security Interests................................................41
     4.20   Solvency..........................................................42

SECTION 5. CONDITIONS PRECEDENT...............................................42
     5.1    Conditions to Restatement Effective Date..........................42
     5.2    Conditions to Each Extension of Credit............................43

SECTION 6. AFFIRMATIVE COVENANTS..............................................43
     6.1    Financial Statements..............................................44
     6.2    Certificates; Other Information...................................44
     6.3    Payment of Obligations............................................46
     6.4    Maintenance of Existence; Compliance..............................46
     6.5    Maintenance of Property; Insurance................................46
     6.6    Inspection of Property; Books and Records; Discussions............46
     6.7    Notices...........................................................46
     6.8    Environmental Laws................................................47
     6.9    Interest Rate Protection..........................................47
     6.10   Additional Collateral, etc........................................47
     6.11   Organizational Separateness.......................................48

SECTION 7. NEGATIVE COVENANTS.................................................50
     7.1    Financial Condition Covenants.....................................50
     7.2    Indebtedness......................................................51
     7.3    Liens.............................................................52
     7.4    Fundamental Changes...............................................53
     7.5    Disposition of Property...........................................54
     7.6    Restricted Payments...............................................55
     7.7    Investments.......................................................56
     7.8    Certain Payments and Modifications of Certain Agreements..........57
     7.9    Transactions with Affiliates......................................57
     7.10   Sales and Leasebacks..............................................57
     7.11   Changes in Fiscal Periods.........................................57
     7.12   Negative Pledge Clauses...........................................57
     7.13   Clauses Restricting Subsidiary Distributions......................58
     7.14   Lines of Business.................................................58
     7.15   Holding Company Status............................................58
     7.16   Communications Tower Facilities...................................58
     7.17   Unrestricted Subsidiary Capital Stock; GTE JV Capital Stock.......58
     7.18   GTE JV and Crown Castle GT Corp.; Specified
            Non-Wholly Owned Subsidiaries, Tower SPVs and
            Unrestricted Subsidiary SPVs; Australian Subsidiary...............58
     7.19   Designation of Unrestricted Subsidiaries as Subsidiaries..........59
     7.20   Designation of Subsidiaries as Unrestricted Subsidiaries..........59
     7.21   CC Puerto Rico; Crown Castle UK Group.............................59

SECTION 8. EVENTS OF DEFAULT..................................................59

SECTION 9. THE ADMINISTRATIVE AGENT...........................................62
     9.1    Appointment.......................................................62
     9.2    Delegation of Duties..............................................62

                                      (ii)

<PAGE>

     9.3    Exculpatory Provisions............................................62
     9.4    Reliance by Administrative Agent..................................63
     9.5    Notice of Default.................................................63
     9.6    Non-Reliance on Administrative Agent and Other Lenders............63
     9.7    Indemnification...................................................64
     9.8    Administrative Agent in Its Individual Capacity...................64
     9.9    Successor Administrative Agent....................................64

SECTION 10. MISCELLANEOUS.....................................................64
     10.1   Amendments and Waivers............................................64
     10.2   Notices...........................................................66
     10.3   No Waiver; Cumulative Remedies....................................66
     10.4   Survival of Representations and Warranties........................67
     10.5   Payment of Expenses and Taxes.....................................67
     10.6   Successors and Assigns; Participations and Assignments............68
     10.7   Adjustments; Set-off..............................................70
     10.8   Counterparts......................................................71
     10.9   Severability......................................................71
     10.10  Integration.......................................................71
     10.11  GOVERNING LAW.....................................................71
     10.12  Submission To Jurisdiction; Waivers...............................71
     10.13  Acknowledgements..................................................72
     10.14  Releases of Guarantees and Liens..................................72
     10.15  Confidentiality...................................................72
     10.16  CC Operating as Agent for CC Puerto Rico..........................73
     10.17  WAIVERS OF JURY TRIAL.............................................73

ANNEX:
-----
A    Pricing Grid

SCHEDULES:
---------
1.1A    Revolving Commitments and Incremental Tranche B Term Commitments
1.1B    Certain Holdings Qualified Obligations
2.1     Lenders Participating in Exchange Offer
4.4     Consents, Authorizations, Filings and Notices
4.15    Subsidiaries
4.19    UCC Filing Jurisdictions
7.2(d)  Existing Indebtedness
7.3(f)  Existing Liens
7.6(e)  Certain Indebtedness to be Repaid

EXHIBITS:
--------
A        Form of Guarantee and Collateral Agreement
B        Form of Compliance Certificate
C-1/C-2  Form of Closing Certificate
D        Form of Addendum
E        Form of Assignment and Assumption
F        Form of Legal Opinion of Cravath, Swaine & Moore LLP
G        Form of Prepayment Option Notice
H        Form of Exemption Certificate
I        Form of Permitted Borrower Subordinated Note

                                     (iii)

<PAGE>

          CREDIT AGREEMENT, dated as of March 15, 2000, as amended and restated
as of October 10, 2003, among CROWN CASTLE INTERNATIONAL CORP., a Delaware
corporation ("Holdings"), CROWN CASTLE OPERATING COMPANY, a Delaware corporation
("CC Operating"), CROWN CASTLE INTERNATIONAL CORP. de PUERTO RICO, a Puerto Rico
corporation ("CC Puerto Rico"), the several banks and other financial
institutions or entities from time to time parties to this Agreement (the
"Lenders") and JPMORGAN CHASE BANK, as administrative agent (in such capacity,
the "Administrative Agent").

                             W I T N E S S E T H :
                             - - - - - - - - - -

          WHEREAS, Holdings and CC Operating entered into the Credit Agreement,
dated as of March 15, 2000 (the "Existing Credit Agreement") with the several
banks and other financial institutions or entities parties thereto and JPMorgan
Chase Bank, as administrative agent;

          WHEREAS, the parties hereto have agreed to amend and restate the
Existing Credit Agreement as provided in this Agreement, which Agreement shall
become effective upon the satisfaction of the conditions precedent set forth in
Section 5.1 hereof; and

          WHEREAS, it is the intent of the parties hereto that this Agreement
not constitute a novation of the obligations and liabilities existing under the
Existing Credit Agreement and which remain outstanding or evidence repayment of
any of such obligations and liabilities and that this Agreement amend and
restate in its entirety the Existing Credit Agreement and re-evidence the
obligations of CC Operating outstanding thereunder;

          NOW, THEREFORE, in consideration of the above premises, the parties
hereto hereby agree that on the Restatement Effective Date (as defined below)
the Existing Credit Agreement shall be amended and restated in its entirety as
follows:

                             SECTION 1. DEFINITIONS

          1.1   Defined Terms. As used in this Agreement, the terms listed in
this Section 1.1 shall have the respective meanings set forth in this
Section 1.1.

          "ABR": for any day, a rate per annum (rounded upwards, if necessary,
to the next 1/16 of 1%) equal to the greatest of (a) the Prime Rate in effect on
such day, (b) the Base CD Rate in effect on such day plus 1% and (c) the Federal
Funds Effective Rate in effect on such day plus 1/2 of 1%. For purposes hereof:
"Prime Rate" shall mean the rate of interest per annum publicly announced from
time to time by JPMorgan Chase Bank as its prime rate in effect at its principal
office in New York City (the Prime Rate not being intended to be the lowest rate
of interest charged by JPMorgan Chase Bank in connection with extensions of
credit to debtors); "Base CD Rate" shall mean the sum of (a) the product of (i)
the Three-Month Secondary CD Rate and (ii) a fraction, the numerator of which is
one and the denominator of which is one minus the C/D Reserve Percentage and (b)
the C/D Assessment Rate; and "Three-Month Secondary CD Rate" shall mean, for any
day, the secondary market rate for three-month certificates of deposit reported
as being in effect on such day (or, if such day shall not be a Business Day, the
next preceding Business Day) by the Board through the public information
telephone line of the Federal Reserve Bank of New York (which rate will, under
the current practices of the Board, be published in Federal Reserve Statistical
Release H.15(519) during the week following such day), or, if such rate shall
not be so reported on such day or such next preceding Business Day, the average
of the secondary market quotations for three-month certificates of deposit of
major money center banks in New York City received at approximately 10:00 A.M.,
New York City time, on such day (or, if such day shall not be a Business Day, on
the next preceding Business Day) by JPMorgan Chase Bank from three New York City
negotiable certificate of deposit dealers of recognized standing selected by it.
Any change in the ABR due to a change in the Prime Rate, the Three-Month
Secondary CD Rate or the Federal Funds Effective Rate shall be effective as of
the opening of business on the effective day of such change in the Prime Rate,
the Three-Month Secondary CD Rate or the Federal Funds Effective Rate,
respectively.

<PAGE>

                                                                               2

          "ABR Loans": Loans the rate of interest applicable to which is based
upon the ABR.

          "Adjustment Date": as defined in the Pricing Grid.

          "Administrative Agent": as defined in the preamble hereto.

          "Affiliate": as to any Person, any other Person that, directly or
indirectly, is in control of, is controlled by, or is under common control with,
such Person. For purposes of this definition, "control" of a Person means the
power, directly or indirectly, either to (a) vote 10% or more of the securities
having ordinary voting power for the election of directors (or persons
performing similar functions) of such Person or (b) direct or cause the
direction of the management and policies of such Person, whether by contract or
otherwise.

          "Aggregate Exposure": with respect to any Lender at any time, an
amount equal to the sum of (a) the aggregate then unpaid principal amount of
such Lender's Term Loans and (b) the amount of such Lender's Revolving
Commitment then in effect or, if the Revolving Commitments have been terminated,
the amount of such Lender's Revolving Extensions of Credit then outstanding.

          "Aggregate Exposure Percentage": with respect to any Lender at any
time, the ratio (expressed as a percentage) of such Lender's Aggregate Exposure
at such time to the Aggregate Exposure of all Lenders at such time.

          "Agreement": this Credit Agreement, as amended, supplemented or
otherwise modified from time to time.

          "Applicable Margin": the per annum rates determined in accordance with
the Pricing Grid.

          "Application": an application, in such form as the relevant Issuing
Lender may specify from time to time, requesting such Issuing Lender to open a
Letter of Credit.

          "Approved Fund": as defined in Section 10.6(b).

          "Asset Sale": any Disposition of property or series of related
Dispositions of property (excluding any such Disposition permitted by clause
(a), (b), (c), (d), (e), (f) or (g) of Section 7.5) that yields gross proceeds
to CC Operating or any of its Subsidiaries (valued at the initial principal
amount thereof in the case of non-cash proceeds consisting of notes or other
debt securities and valued at fair market value in the case of other non-cash
proceeds) in excess of $1,000,000.

          "Assignee": as defined in Section 10.6(b).

          "Assignment and Assumption": an Assignment and Assumption,
substantially in the form of Exhibit E.

          "Aus$": the lawful currency of Australia.

          "Australian Credit Support Documents": (a) any promissory note issued
by the Australian Subsidiary to CC Operating, (b) the New South Wales Security
Deed, dated April 7, 2000, made by the Australian Subsidiary in favor of the
Administrative Agent, and (c) the Australian Share Mortgage, dated April 7,
2000, made by Crown Castle Australia Limited in favor of the Administrative
Agent.

<PAGE>

                                                                               3

          "Australian Intercompany Loans": loans from CC Operating to the
Australian Subsidiary in an aggregate principal amount not to exceed the Dollar
equivalent of Aus$220,000,000 at any one time outstanding.

          "Australian Subsidiary": CCAL Towers PTY Limited ACN 090 873 019.

          "Available Revolving Commitment": as to any Revolving Lender at any
time, the amount by which (a) such Lender's Revolving Commitment then in effect
exceeds (b) such Lender's Revolving Extensions of Credit then outstanding;
provided, that in calculating any Lender's Revolving Extensions of Credit for
the purpose of determining such Lender's Available Revolving Commitment pursuant
to Section 2.6(a), the aggregate principal amount of Swingline Loans then
outstanding shall be deemed to be zero.

          "Benefitted Lender": as defined in Section 10.7(a).

          "Board": the Board of Governors of the Federal Reserve System of the
United States (or any successor).

          "Borrower": CC Operating and CC Puerto Rico, both collectively and
individually. By way of illustration, the reference to "the Borrower" in the
second line of the paragraph following Section 8(k) shall be deemed to be a
reference to each of CC Operating and CC Puerto Rico. Without limiting the
generality of the foregoing, it is understood that each of CC Operating and CC
Puerto Rico shall be jointly and severally liable to repay all Loans borrowed
hereunder and to pay all interest, fees and other obligations incurred or owing
by "the Borrower" pursuant to this Agreement. Notwithstanding anything to the
contrary in this Agreement, subject to the prior written consent of the
Administrative Agent, but with no requirement of consent from any Lender, CC
Operating may remove CC Puerto Rico as a "Borrower" under this Agreement, in
which case the term "Borrower" shall refer only to CC Operating.

          "Borrowing Date": any Business Day specified by the Borrower as a date
on which the Borrower requests the relevant Lenders to make Loans hereunder.

          "Business": as defined in Section 4.17(b).

          "Business Day": a day other than a Saturday, Sunday or other day on
which commercial banks in New York City are authorized or required by law to
close, provided, that with respect to notices and determinations in connection
with, and payments of principal and interest on, Eurodollar Loans, such day is
also a day for trading by and between banks in Dollar deposits in the interbank
eurodollar market.

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

          "Capital Lease Obligations": as to any Person, the obligations of such
Person to pay rent or other amounts under any lease of (or other arrangement
conveying the right to use) real or personal property, or a combination thereof,
which obligations are required to be classified and accounted for as capital
leases on a balance sheet of such Person under GAAP and, for the purposes of
this Agreement, the amount of such obligations at any time shall be the
capitalized amount thereof at such time determined in accordance with GAAP.

<PAGE>

                                                                               4

          "Capital Stock": any and all shares, interests, participations or
other equivalents (however designated) of capital stock of a corporation, any
and all equivalent ownership interests in a Person (other than a corporation)
and any and all warrants, rights or options to purchase any of the foregoing.

          "Cash Equivalents": (a) marketable direct obligations issued by, or
unconditionally guaranteed by, the United States Government or issued by any
agency thereof and backed by the full faith and credit of the United States, in
each case maturing within one year from the date of acquisition; (b)
certificates of deposit, time deposits, eurodollar time deposits or overnight
bank deposits having maturities of six months or less from the date of
acquisition issued by any Lender or by any commercial bank organized under the
laws of the United States or any state thereof having combined capital and
surplus of not less than $500,000,000; (c) commercial paper of an issuer rated
at least A-1 by Standard & Poor's Ratings Services ("S&P") or P-1 by Moody's
Investors Service, Inc. ("Moody's"), or carrying an equivalent rating by a
nationally recognized rating agency, if both of the two named rating agencies
cease publishing ratings of commercial paper issuers generally, and maturing
within six months from the date of acquisition; (d) repurchase obligations of
any Lender or of any commercial bank satisfying the requirements of clause (b)
of this definition, having a term of not more than 30 days, with respect to
securities issued or fully guaranteed or insured by the United States
government; (e) securities with maturities of one year or less from the date of
acquisition issued or fully guaranteed by any state, commonwealth or territory
of the United States, or by any political subdivision or taxing authority of any
such state, commonwealth or territory, the securities of which state,
commonwealth, territory, political subdivision or taxing authority (as the case
may be) are rated at least A by S&P or A2 by Moody's; (f) securities with
maturities of six months or less from the date of acquisition backed by standby
letters of credit issued by any Lender or any commercial bank satisfying the
requirements of clause (b) of this definition; (g) shares of money market mutual
or similar funds which invest substantially exclusively in assets satisfying the
requirements of clauses (a) through (f) of this definition or (h) in the case of
any Foreign Subsidiary (i) marketable direct obligations issued by, or
unconditionally guaranteed by, the sovereign nation in which such Foreign
Subsidiary is organized and is conducting business or issued by any agency of
such sovereign nation and backed by the full faith and credit of such sovereign
nation, in each case maturing within one year from the date of acquisition, so
long as the indebtedness of such sovereign nation is rated at least A by S&P or
A2 by Moody's or carries an equivalent rating from a comparable foreign rating
agency or (ii) investments of the type and maturity described in clauses (b)
through (g) above of foreign obligors, which investments or obligors have
ratings described in such clauses or equivalent ratings from comparable foreign
rating agencies.

          "CC Operating": as defined in the preamble hereto.

          "CC Puerto Rico": as defined in the preamble hereto.

          "C/D Assessment Rate": for any day as applied to any ABR Loan, the
annual assessment rate in effect on such day that is payable by a member of the
Bank Insurance Fund maintained by the Federal Deposit Insurance Corporation (the
"FDIC") classified as well-capitalized and within supervisory subgroup "B" (or a
comparable successor assessment risk classification) within the meaning of 12
C.F.R. Section 327.4 (or any successor provision) to the FDIC (or any successor)
for the FDIC's (or such successor's) insuring time deposits at offices of such
institution in the United States.

          "C/D Reserve Percentage": for any day as applied to any ABR Loan, that
percentage (expressed as a decimal) which is in effect on such day, as
prescribed by the Board, for determining the maximum reserve requirement for a
Depositary Institution (as defined in Regulation D of the Board as in effect
from time to time) in respect of new non-personal time deposits in Dollars
having a maturity of 30 days or more.

<PAGE>

                                                                               5

          "Change of Control": (a) any "person" or "group" (as such terms are
used in Sections 13(d) and 14(d) of the Securities Exchange Act of 1934, as
amended (the "Exchange Act")) shall become, or obtain rights (whether by means
or warrants, options or otherwise) to become, the "beneficial owner" (as defined
in Rules 13(d)-3 and 13(d)-5 under the Exchange Act), directly or indirectly, of
more than 30% of the outstanding common stock of Holdings; (b) the board of
directors of Holdings shall cease to consist of a majority of Continuing
Directors; (c) Holdings shall cease to own and control, of record and
beneficially, directly, 100% of each class of outstanding Capital Stock of CC
Operating free and clear of all Liens (except Liens created by the Guarantee and
Collateral Agreement); or (d) a Specified Change of Control shall occur.

          "Code": the Internal Revenue Code of 1986, as amended from time to
time.

          "Collateral": all property of the Loan Parties, now owned or hereafter
acquired, upon which a Lien is purported to be created by any Security Document.

          "Commonly Controlled Entity": an entity, whether or not incorporated,
that is under common control with CC Operating within the meaning of Section
4001 of ERISA or is part of a group that includes CC Operating and that is
treated as a single employer under Section 414 of the Code.

          "Commitment Fee Rate": a per annum rate based on combined Tranche A
Term Facility drawings and Revolving Facility usage as a percentage of the sum
of (a) the original aggregate amount of the "Tranche A Term Commitments" under
and as defined in the Existing Credit Agreement (i.e. $300,000,000) plus (b) the
Total Revolving Commitments as set forth below:

          Percentage Utilized          Rate
          -------------------------    ----
           * 33 1/3%                   1.00%
          ** 33 1/3% but * 66 2/3%     0.75%
          ** 66 2/3%                   0.50%

          "Compliance Certificate": a certificate duly executed by a Responsible
Officer substantially in the form of Exhibit B.

          "Conduit Lender": any special purpose corporation organized and
administered by any Lender for the purpose of making Loans otherwise required to
be made by such Lender and designated by such Lender in a written instrument;
provided, that the designation by any Lender of a Conduit Lender shall not
relieve the designating Lender of any of its obligations to fund a Loan under
this Agreement if, for any reason, its Conduit Lender fails to fund any such
Loan, and the designating Lender (and not the Conduit Lender) shall have the
sole right and responsibility to deliver all consents and waivers required or
requested under this Agreement with respect to its Conduit Lender, and provided,
further, that no Conduit Lender shall (a) be entitled to receive any greater
amount pursuant to Section 2.16, 2.17, 2.18 or 10.5 than the designating Lender
would have been entitled to receive in respect of the extensions of credit made
by such Conduit Lender or (b) be deemed to have any Commitment.

          "Confidential Information Memorandum": the Confidential Information
Memorandum dated September 2003 and furnished to certain Lenders.

          "Consolidated Cash Interest Expense": for any period, the total cash
interest expense (including that attributable to Capital Lease Obligations) of
CC Operating and its Subsidiaries for such period with respect to all
outstanding Indebtedness of CC Operating and its Subsidiaries (including all
commissions, discounts and other fees and charges owed with respect to letters
of credit and bankers' acceptance financing and net costs under Hedge Agreements
in respect of interest rates to the extent such net costs are allocable to such
period in accordance with GAAP).

 * denotes less than
** denotes greater than or equal to

<PAGE>

                                                                               6

          "Consolidated Current Assets": at any date, all amounts (other than
cash and Cash Equivalents) that would, in conformity with GAAP, be set forth
opposite the caption "total current assets" (or any like caption) on a
consolidated balance sheet of CC Operating and its Subsidiaries at such date.

          "Consolidated Current Liabilities": at any date, all amounts that
would, in conformity with GAAP, be set forth opposite the caption "total current
liabilities" (or any like caption) on a consolidated balance sheet of CC
Operating and its Subsidiaries at such date, but excluding (a) the current
portion of any Funded Debt of CC Operating and its Subsidiaries and (b) without
duplication of clause (a) above, all Indebtedness consisting of Revolving Loans
or Swingline Loans to the extent otherwise included therein.

          "Consolidated Debt Service Coverage Ratio": as of the last day of any
period, the ratio of (a) Consolidated EBITDA for the relevant period ending on
such day to (b) Consolidated Pro Forma Debt Service determined as of such day;
provided that for the purposes this definition, Consolidated EBITDA shall be
deemed to be equal to (i) with respect to the Permitted Communications
Facilities businesses of CC Operating, that portion of Consolidated EBITDA
generated by the Permitted Communications Facilities businesses of CC Operating
and its consolidated Subsidiaries for the most recently completed fiscal quarter
of CC Operating multiplied by four and (ii) with respect to all other businesses
of CC Operating, that portion of Consolidated EBITDA generated by all other
businesses of CC Operating and its consolidated Subsidiaries for the most
recently completed four fiscal quarters of CC Operating.

          "Consolidated EBITDA": for any period, Consolidated Net Income for
such period plus, without duplication and to the extent reflected as a charge in
the statement of such Consolidated Net Income for such period, the sum of (a)
income tax expense, (b) interest expense, amortization or writeoff of debt
discount and debt issuance costs and commissions, discounts and other fees and
charges associated with Indebtedness (including the Loans), (c) depreciation and
amortization expense, (d) amortization of intangibles (including, but not
limited to, goodwill) and organization costs, (e) any extraordinary, unusual or
non-recurring non-cash expenses or losses (including, whether or not otherwise
includable as a separate item in the statement of such Consolidated Net Income
for such period, non-cash losses on sales of assets outside of the ordinary
course of business), and (f) any other non-cash charges, and minus, to the
extent included in the statement of such Consolidated Net Income for such
period, the sum of (a) interest income, (b) any extraordinary, unusual or
non-recurring income or gains (including, whether or not otherwise includable as
a separate item in the statement of such Consolidated Net Income for such
period, gains on the sales of assets outside of the ordinary course of business)
and (c) any other non-cash income, all as determined on a consolidated basis.
Notwithstanding anything to the contrary in this Agreement, in determining
Consolidated EBITDA, the amount of Consolidated EBITDA attributable to any
Subsidiary (other than a Wholly Owned Subsidiary) shall be included in such
determination only to the extent of CC Operating's percentage ownership interest
in such Subsidiary and in any event shall not, in the case of any Specified
Non-Wholly Owned Subsidiary, exceed the then outstanding principal amount of the
Specified Intercompany Note issued by such Subsidiary divided by the then
applicable Consolidated Leverage Ratio required by Section 7.1(a). The
Australian Subsidiary shall be treated as a Wholly Owned Subsidiary of CC
Operating for the purposes of this definition if and so long as it is a party to
security documents satisfactory to the Administrative Agent and 100% of its
Capital Stock has been pledged as Collateral. Notwithstanding anything to the
contrary herein, Consolidated EBITDA attributable to any Subsidiary of any
Specified Non-Wholly Owned Subsidiary (other than any such Subsidiary that
itself is a Specified Non-Wholly Owned Subsidiary) or of the Australian
Subsidiary shall be disregarded except to the extent actually distributed to
such Specified Non-Wholly Owned Subsidiary or the Australian Subsidiary, as the
case may be.

<PAGE>

                                                                               7

          "Consolidated Fixed Charge Coverage Ratio": as of the last day of any
period, the ratio of (a) Consolidated EBITDA for the period of four consecutive
fiscal quarters ending on such day to (b) Consolidated Fixed Charges for the
period of four consecutive fiscal quarters ending on such day.

          "Consolidated Fixed Charges": for any period, the sum (without
duplication) of (a) Consolidated Cash Interest Expense for such period, (b) all
distributions made by CC Operating or any of its Subsidiaries during such period
in order to enable Holdings to pay (i) cash interest or dividends in respect of
Indebtedness or preferred stock of Holdings or (ii) overhead expenses of
Holdings, (c) scheduled payments made during such period on account of principal
of Indebtedness of CC Operating or any of its Subsidiaries (including scheduled
principal payments in respect of the Term Loans and payments of Revolving Loans
accompanying scheduled reductions of the Revolving Commitments) and (d) income
tax expense for such period.

          "Consolidated Interest Coverage Ratio": as of the last day of any
period, the ratio of (a) Consolidated EBITDA for the period of four consecutive
fiscal quarters ending on such day to (b) Consolidated Cash Interest Expense for
the period of four consecutive fiscal quarters ending on such day.

          "Consolidated Leverage Ratio": as of the last day of any period, the
ratio of (a) Consolidated Total Debt on such day to (b) Consolidated EBITDA for
such period; provided that for the purposes this definition, Consolidated EBITDA
shall be deemed to be equal to (i) with respect to the Permitted Communications
Facilities businesses of CC Operating, that portion of Consolidated EBITDA
generated by the Permitted Communications Facilities businesses of CC Operating
and its consolidated Subsidiaries for the most recently completed fiscal quarter
of CC Operating multiplied by four and (ii) with respect to all other businesses
of CC Operating, that portion of Consolidated EBITDA generated by all other
businesses of CC Operating and its consolidated Subsidiaries for the most
recently completed four fiscal quarters of CC Operating.

          "Consolidated Net Income": for any period, the consolidated net income
(or loss) of CC Operating and its Subsidiaries (adjusted to exclude non-cash
minority interests), determined on a consolidated basis in accordance with GAAP;
provided that there shall be excluded (a) the income (or deficit) of any Person
accrued prior to the date it becomes a Subsidiary of CC Operating or is merged
into or consolidated with CC Operating or any of its Subsidiaries, (b) the
income (or deficit) of any Person (other than a Subsidiary of CC Operating) in
which CC Operating or any of its Subsidiaries has an ownership interest, except
to the extent that any such income is actually received by CC Operating or such
Subsidiary in the form of dividends or similar distributions and (c) the
undistributed earnings of any Subsidiary of CC Operating to the extent that the
declaration or payment of dividends or similar distributions by such Subsidiary
is not at the time permitted by the terms of any Contractual Obligation or
Requirement of Law applicable to such Subsidiary.

          "Consolidated Pro Forma Debt Service": as of the last day of any
period, the sum of (a) Consolidated Cash Interest Expense for the period of four
consecutive fiscal quarters ending on such day, (b) all distributions made by CC
Operating or any of its Subsidiaries for the period of four consecutive fiscal
quarters ending on such day in order to enable Holdings to pay (i) cash interest
or dividends in respect of Indebtedness or preferred stock of Holdings or (ii)
overhead expenses of Holdings and (c) scheduled principal payments on
Indebtedness of CC Operating or any of its Subsidiaries for the period of four
consecutive fiscal quarters commencing immediately after such day (or, in the
case of the Revolving Facility, the excess, if any, of the Total Revolving
Extensions of Credit outstanding on such day over the amount of the Total
Revolving Commitments scheduled to be in effect at the end of such period of
four consecutive fiscal quarters).

<PAGE>

                                                                               8

          "Consolidated Total Debt": at any date, the aggregate principal amount
of all Indebtedness of CC Operating and its Subsidiaries at such date,
determined on a consolidated basis in accordance with GAAP.

          "Consolidated Working Capital": at any date, the excess of
Consolidated Current Assets on such date over Consolidated Current Liabilities
on such date.

          "Continuing Directors": the directors of Holdings on the Original
Closing Date and each other director, if, in each case, such other director's
nomination for election to the board of directors of Holdings is recommended by
at least 66-2/3% of the then Continuing Directors.

          "Contractual Obligation": as to any Person, any provision of any
security issued by such Person or of any agreement, instrument or other
undertaking to which such Person is a party or by which it or any of its
property is bound.

          "Crown Castle UK": Crown Castle UK Holdings Limited, an English
company.

          "Crown Castle UK Group": Crown Castle UK and its Subsidiaries,
collectively.

          "Default": any of the events specified in Section 8, whether or not
any requirement for the giving of notice, the lapse of time, or both, has been
satisfied.

          "Defaulting Lender": any Lender that defaults in its obligation to
make any Loan hereunder.

          "Disposition": with respect to any property, any sale, lease, sale and
leaseback, assignment, conveyance, transfer or other disposition thereof. The
terms "Dispose" and "Disposed of" shall have correlative meanings.

          "Dollars" and "$": dollars in lawful currency of the United States.

          "Domestic Subsidiary": any Subsidiary of CC Operating organized under
the laws of any jurisdiction within the United States.

          "Environmental Laws": any and all Requirements of Law regulating,
relating to or imposing liability or standards of conduct concerning protection
of human health or the environment.

          "ERISA": the Employee Retirement Income Security Act of 1974, as
amended from time to time.

          "Eurocurrency Reserve Requirements": for any day as applied to a
Eurodollar Loan, the aggregate (without duplication) of the maximum rates
(expressed as a decimal fraction) of reserve requirements in effect on such day
(including basic, supplemental, marginal and emergency reserves under any
regulations of the Board or other Governmental Authority having jurisdiction
with respect thereto) dealing with reserve requirements prescribed for
eurocurrency funding (currently referred to as "Eurocurrency Liabilities" in
Regulation D of the Board) maintained by a member bank of the Federal Reserve
System.

          "Eurodollar Base Rate": with respect to each day during each Interest
Period pertaining to a Eurodollar Loan, the rate per annum determined on the
basis of the rate for deposits in Dollars for a period equal to such Interest
Period commencing on the first day of such Interest Period appearing on Page
3750 of the Telerate screen as of 11:00 A.M., London time, two Business Days
prior to the beginning of such Interest Period. In the event that such rate does
not appear on Page 3750 of the

<PAGE>

                                                                               9

Telerate screen (or otherwise on such screen), the "Eurodollar Base Rate" shall
be determined by reference to such other comparable publicly available service
for displaying eurodollar rates as may be selected by the Administrative Agent
or, in the absence of such availability, by reference to the rate at which the
Administrative Agent is offered Dollar deposits at or about 11:00 A.M., New York
City time, two Business Days prior to the beginning of such Interest Period in
the interbank eurodollar market where its eurodollar and foreign currency and
exchange operations are then being conducted for delivery on the first day of
such Interest Period for the number of days comprised therein.

          "Eurodollar Loans": Loans the rate of interest applicable to which is
based upon the Eurodollar Rate.

          "Eurodollar Rate": with respect to each day during each Interest
Period pertaining to a Eurodollar Loan, a rate per annum determined for such day
in accordance with the following formula (rounded upward to the nearest 1/100th
of 1%):

                       Eurodollar Base Rate
                1.00 - Eurocurrency Reserve Requirements

          "Eurodollar Tranche": the collective reference to Eurodollar Loans
under a particular Facility the then current Interest Periods with respect to
all of which begin on the same date and end on the same later date (whether or
not such Loans shall originally have been made on the same day).

          "Event of Default": any of the events specified in Section 8, provided
that any requirement for the giving of notice, the lapse of time, or both, has
been satisfied.

          "Excess Cash Flow": for any fiscal year of CC Operating, the excess,
if any, of (a) the sum, without duplication, of (i) Consolidated Net Income for
such fiscal year, (ii) an amount equal to the amount of all non-cash charges
(including depreciation and amortization) deducted in arriving at such
Consolidated Net Income, (iii) decreases in Consolidated Working Capital for
such fiscal year, and (iv) an amount equal to the aggregate net non-cash loss on
the Disposition of property by CC Operating and its Subsidiaries during such
fiscal year (other than sales of inventory in the ordinary course of business),
to the extent deducted in arriving at such Consolidated Net Income over (b) the
sum, without duplication, of (i) an amount equal to the amount of all non-cash
credits included in arriving at such Consolidated Net Income, (ii) the aggregate
amount actually paid by CC Operating and its Subsidiaries in cash during such
fiscal year on account of Capital Expenditures (excluding the principal amount
of Indebtedness incurred in connection with such expenditures and any such
expenditures financed with the proceeds of any Reinvestment Deferred Amount),
(iii) the aggregate amount of all prepayments of Revolving Loans and Swingline
Loans during such fiscal year to the extent accompanying permanent optional
reductions of the Revolving Commitments and all optional prepayments of the Term
Loans during such fiscal year, (iv) the aggregate amount of all regularly
scheduled principal payments of Funded Debt (including the Term Loans) of CC
Operating and its Subsidiaries made during such fiscal year (other than in
respect of any revolving credit facility to the extent there is not an
equivalent permanent reduction in commitments thereunder), (v) increases in
Consolidated Working Capital for such fiscal year, (vi) an amount equal to the
aggregate net non-cash gain on the Disposition of property by CC Operating and
its Subsidiaries during such fiscal year (other than sales of inventory in the
ordinary course of business), to the extent included in arriving at such
Consolidated Net Income, and (vii) the aggregate amount of dividends paid by CC
Operating during such fiscal year pursuant to Section 7.6(c)(iii). The
determination of Excess Cash Flow for the 2003 fiscal year shall be made on a
pro forma basis assuming that the UK Roll-Up had been consummated on the first
day of the fourth fiscal quarter thereof. It is understood that all amounts paid
by the Borrower to Holdings prior to the Restatement Effective Date during the
2003 fiscal year to enable Holdings to pay scheduled interest and dividend
payments in respect of Holdings Qualified Obligations constituted dividends made
pursuant to Section 7.6(c)(iii).

<PAGE>

                                                                              10

          "Excess Cash Flow Application Date": as defined in Section 2.9(c).

          "Existing Credit Agreement": as defined in the recitals hereto.

          "Existing Tranche B Term Loan": each "Tranche B Term Loan" outstanding
under the Existing Credit Agreement immediately prior to the effectiveness of
this Agreement.

          "Facility": each of (a) the Tranche A Term Loans (the "Tranche A Term
Facility"), (b) the Tranche B Term Loans (the "Tranche B Term Facility") and (c)
the Revolving Commitments and the extensions of credit made thereunder (the
"Revolving Facility").

          "Federal Funds Effective Rate": for any day, the weighted average of
the rates on overnight federal funds transactions with members of the Federal
Reserve System arranged by federal funds brokers, as published on the next
succeeding Business Day by the Federal Reserve Bank of New York, or, if such
rate is not so published for any day that is a Business Day, the average of the
quotations for the day of such transactions received by JPMorgan Chase Bank from
three federal funds brokers of recognized standing selected by it.

          "Foreign Subsidiary": any Subsidiary of CC Operating that is not a
Domestic Subsidiary.

          "Funded Debt": as to any Person, all Indebtedness of such Person that
matures more than one year from the date of its creation or matures within one
year from such date but is renewable or extendible, at the option of such
Person, to a date more than one year from such date or arises under a revolving
credit or similar agreement that obligates the lender or lenders to extend
credit during a period of more than one year from such date, including all
current maturities and current sinking fund payments in respect of such
Indebtedness whether or not required to be paid within one year from the date of
its creation and, in the case of the Borrower, Indebtedness in respect of the
Loans.

          "Funding Office": the office of the Administrative Agent specified in
Section 10.2 or such other office as may be specified from time to time by the
Administrative Agent as its funding office by written notice to the Borrower and
the Lenders.

          "GAAP": generally accepted accounting principles in the United States
as in effect from time to time, except that for purposes of Section 7.1, GAAP
shall be determined on the basis of such principles in effect on the Restatement
Effective Date and consistent with those used in the preparation of the most
recent audited financial statements referred to in Section 4.1(b). In the event
that any "Accounting Change" (as defined below) shall occur and such change
results in a change in the method of calculation of financial covenants,
standards or terms in this Agreement, then CC Operating and the Administrative
Agent agree to enter into negotiations in order to amend such provisions of this
Agreement so as to equitably reflect such Accounting Changes with the desired
result that the criteria for evaluating CC Operating's financial condition shall
be the same after such Accounting Changes as if such Accounting Changes had not
been made. Until such time as such an amendment shall have been executed and
delivered by CC Operating, the Administrative Agent and the Required Lenders,
all financial covenants, standards and terms in this Agreement shall continue to
be calculated or construed as if such Accounting Changes had not occurred.
"Accounting Changes" refers to changes in accounting principles required by the
promulgation of any rule, regulation, pronouncement or opinion by the Financial
Accounting Standards Board of the American Institute of Certified Public
Accountants or, if applicable, the SEC.

          "Governing Documents": collectively, as to any Person, the articles or
certificate of incorporation and bylaws, any shareholders agreement, certificate
of formation, limited liability company agreement, partnership agreement or
other formation or constituent documents of such Person.

<PAGE>

                                                                              11

          "Governmental Authority": any nation or government, any state or other
political subdivision thereof, any agency, authority, instrumentality,
regulatory body, court, central bank or other entity exercising executive,
legislative, judicial, taxing, regulatory or administrative functions of or
pertaining to government, any securities exchange and any self-regulatory
organization (including the National Association of Insurance Commissioners).

          "GTE JV": Crown Castle GT Holding Company LLC, a Delaware limited
liability company.

          "Guarantee and Collateral Agreement": the Amended and Restated
Guarantee and Collateral Agreement to be executed and delivered by Holdings, the
Borrower, each Subsidiary Guarantor and each Specified Non-Wholly Owned
Subsidiary, substantially in the form of Exhibit A, as the same may be amended,
supplemented or otherwise modified from time to time. If requested by the
Administrative Agent, any Foreign Subsidiary that would otherwise be required to
become a party to the Guarantee and Collateral Agreement shall instead become a
party to separate agreements having a substantially equivalent effect.

          "Guarantee Obligation": as to any Person (the "guaranteeing person"),
any obligation, including a reimbursement, counterindemnity or similar
obligation, of the guaranteeing person that guarantees or in effect guarantees,
or which is given to induce the creation of a separate obligation by another
Person (including any bank under any letter of credit) that guarantees or in
effect guarantees, any Indebtedness, leases, dividends or other obligations (the
"primary obligations") of any third Person (the "primary obligor") in any
manner, whether directly or indirectly, including any obligation of the
guaranteeing person, whether or not contingent, (i) to purchase any such primary
obligation or any property constituting direct or indirect security therefor,
(ii) to advance or supply funds (1) for the purchase or payment of any such
primary obligation or (2) to maintain working capital or equity capital of the
primary obligor or otherwise to maintain the net worth or solvency of the
primary obligor, (iii) to purchase property, securities or services primarily
for the purpose of assuring the owner of any such primary obligation of the
ability of the primary obligor to make payment of such primary obligation or
(iv) otherwise to assure or hold harmless the owner of any such primary
obligation against loss in respect thereof; provided, however, that the term
Guarantee Obligation shall not include endorsements of instruments for deposit
or collection in the ordinary course of business. The amount of any Guarantee
Obligation of any guaranteeing person shall be deemed to be the lower of (a) an
amount equal to the stated or determinable amount of the primary obligation in
respect of which such Guarantee Obligation is made and (b) the maximum amount
for which such guaranteeing person may be liable pursuant to the terms of the
instrument embodying such Guarantee Obligation, unless such primary obligation
and the maximum amount for which such guaranteeing person may be liable are not
stated or determinable, in which case the amount of such Guarantee Obligation
shall be such guaranteeing person's maximum reasonably anticipated liability in
respect thereof as determined by CC Operating in good faith.

          "Guarantors": the collective reference to Holdings and the Subsidiary
Guarantors.

          "Hedge Agreements": all interest rate swaps, caps or collar agreements
or similar arrangements dealing with interest rates or currency exchange rates
or the exchange of nominal interest obligations, either generally or under
specific contingencies.

          "Holdings": as defined in the preamble hereto.

          "Holdings Debt Agreements": the collective reference to the agreements
in existence on the Original Closing Date governing the 10-5/8% Senior Discount
Notes, the 12-3/4% Senior Exchangeable Preferred Stock, the 12-3/4% Senior
Subordinated Exchange Debentures, the 10-3/8%

<PAGE>

                                                                              12

Senior Discount Notes, the 9% Senior Notes, the 11-1/4% Senior Discount Notes
and the 9-1/2% Senior Notes of Holdings.

          "Holdings Qualified Obligations": (a) Indebtedness or preferred stock
of Holdings listed on Schedule 1.1B, (b) Indebtedness or preferred stock of
Holdings incurred or issued after the Original Closing Date, the net proceeds of
which are contributed to CC Operating and are not used to make Investments in
Persons that are not Subsidiaries of CC Operating and (c) any refinancing of any
of the foregoing.

          "Incremental Tranche B Term Commitment": as to any Lender, the
obligation of such Lender, if any, to make an Incremental Tranche B Term Loan to
the Borrower hereunder in a principal amount not to exceed the amount set forth
under the heading "Incremental Tranche B Term Commitment" opposite such Lender's
name on Schedule 1.1A. The original aggregate amount of the Incremental Tranche
B Term Commitments is $702,000,000.

          "Incremental Tranche B Term Lender": each Lender that has an
Incremental Tranche B Term Commitment or that holds an Incremental Tranche B
Term Loan.

          "Incremental Tranche B Term Loan": as defined in Section 2.1(a).

          "Indebtedness": of any Person at any date, without duplication, (a)
all indebtedness of such Person for borrowed money, (b) all obligations of such
Person for the deferred purchase price (to the extent determinable) of property
or services (other than current trade payables incurred in the ordinary course
of such Person's business), provided that to the extent any such obligation is
reflected as a liability on the balance sheet of such Person, such obligation
shall in any event be considered "Indebtedness", (c) all obligations of such
Person evidenced by notes, bonds, debentures or other similar instruments, (d)
all indebtedness created or arising under any conditional sale or other title
retention agreement with respect to property acquired by such Person (even
though the rights and remedies of the seller or lender under such agreement in
the event of default are limited to repossession or sale of such property), (e)
all Capital Lease Obligations of such Person, (f) all obligations of such
Person, contingent or otherwise, as an account party or applicant under or in
respect of acceptances, letters of credit, surety bonds or similar arrangements,
(g) the liquidation value of all redeemable preferred Capital Stock of such
Person, (h) all Guarantee Obligations of such Person in respect of obligations
of the kind referred to in clauses (a) through (g) above, (i) all obligations of
the kind referred to in clauses (a) through (h) above secured by (or for which
the holder of such obligation has an existing right, contingent or otherwise, to
be secured by) any Lien on property (including accounts and contract rights)
owned by such Person, whether or not such Person has assumed or become liable
for the payment of such obligation and (j) for the purposes of Sections 7.2 and
8(e) only, all obligations of such Person in respect of Hedge Agreements. The
Indebtedness of any Person shall include the Indebtedness of any other entity
(including any partnership in which such Person is a general partner) to the
extent such Person is liable therefor as a result of such Person's ownership
interest in or other relationship with such entity, except to the extent the
terms of such Indebtedness expressly provide that such Person is not liable
therefor.

          "Insolvency": with respect to any Multiemployer Plan, the condition
that such Plan is insolvent within the meaning of Section 4245 of ERISA.

          "Insolvent": pertaining to a condition of Insolvency.

          "Intellectual Property": the collective reference to all rights,
priorities and privileges relating to intellectual property, whether arising
under United States, multinational or foreign laws or otherwise, including
copyrights, copyright licenses, patents, patent licenses, trademarks, trademark
licenses, technology, know-how and processes, and all rights to sue at law or in
equity for any

<PAGE>

                                                                              13

infringement or other impairment thereof, including the right to receive all
proceeds and damages therefrom.

          "Interest Payment Date": (a) as to any ABR Loan, the last day of each
March, June, September and December to occur while such Loan is outstanding and
the final maturity date of such Loan, (b) as to any Eurodollar Loan having an
Interest Period of three months or less, the last day of such Interest Period,
(c) as to any Eurodollar Loan having an Interest Period longer than three
months, each day that is three months, or a whole multiple thereof, after the
first day of such Interest Period and the last day of such Interest Period and
(d) as to any Loan (other than any Revolving Loan that is an ABR Loan and any
Swingline Loan), the date of any repayment or prepayment made in respect
thereof.

          "Interest Period": as to any Eurodollar Loan, (a) initially, the
period commencing on the borrowing or conversion date, as the case may be, with
respect to such Eurodollar Loan and ending one, two, three or six (or, with the
consent of all Lenders under the relevant Facility, nine or twelve) months
thereafter, as selected by the Borrower in its notice of borrowing or notice of
conversion, as the case may be, given with respect thereto; and (b) thereafter,
each period commencing on the last day of the next preceding Interest Period
applicable to such Eurodollar Loan and ending one, two, three or six (or, with
the consent of all Lenders under the relevant Facility, nine or twelve) months
thereafter, as selected by the Borrower by irrevocable notice to the
Administrative Agent not less than three Business Days prior to the last day of
the then current Interest Period with respect thereto; provided that, all of the
foregoing provisions relating to Interest Periods are subject to the following:

          (a)  if any Interest Period would otherwise end on a day that is not a
   Business Day, such Interest Period shall be extended to the next succeeding
   Business Day unless the result of such extension would be to carry such
   Interest Period into another calendar month in which event such Interest
   Period shall end on the immediately preceding Business Day;

          (b)  the Borrower may not select an Interest Period under a particular
   Facility that would extend beyond the Revolving Termination Date or beyond
   the date final payment is due on the Tranche A Term Loans or the Tranche B
   Term Loans, as the case may be;

          (c)  any Interest Period that begins on the last Business Day of a
   calendar month (or on a day for which there is no numerically corresponding
   day in the calendar month at the end of such Interest Period) shall end on
   the last Business Day of a calendar month; and

          (d)  the Borrower shall select Interest Periods so as not to require a
   payment or prepayment of any Eurodollar Loan during an Interest Period for
   such Loan.

          "Investments": as defined in Section 7.7.

          "Issuing Lender": each of JPMorgan Chase Bank, KCCI and any other
Revolving Lender selected by the Borrower that has agreed in its sole discretion
to act as an "Issuing Lender" hereunder and that has been approved in writing by
the Administrative Agent as an "Issuing Lender" hereunder, in each case in its
capacity as issuer of any Letter of Credit.

          "KCCI": Key Corporate Capital Inc.

          "L/C Commitment": $25,000,000.

          "L/C Fee Payment Date": (a) the third Business Day following the last
day of each March, June, September and December and (b) the last day of the
Revolving Commitment Period.

<PAGE>

                                                                              14

          "L/C Obligations": at any time, an amount equal to the sum of (a) the
aggregate then undrawn and unexpired amount of the then outstanding Letters of
Credit and (b) the aggregate amount of drawings under Letters of Credit that
have not then been reimbursed pursuant to Section 3.5.

          "L/C Participants": with respect to any Letter of Credit, the
collective reference to all the Revolving Lenders other than the Issuing Lender
that issued such Letter of Credit.

          "Lenders": as defined in the preamble hereto; provided, that unless
the context otherwise requires, each reference herein to the Lenders shall be
deemed to include any Conduit Lender.

          "Letters of Credit": as defined in Section 3.1(a).

          "Lien": any mortgage, pledge, hypothecation, assignment, deposit
arrangement, encumbrance, lien (statutory or other), charge or other security
interest or any preference, priority or other security agreement or preferential
arrangement of any kind or nature whatsoever (including any conditional sale or
other title retention agreement and any capital lease having substantially the
same economic effect as any of the foregoing).

          "Loan": any loan made by any Lender pursuant to this Agreement.

          "Loan Documents": this Agreement, the Security Documents, Specified
Intercompany Notes and any note evidencing Australian Intercompany Loans.

          "Loan Parties": Holdings, CC Operating and each Subsidiary of CC
Operating that is a party to a Loan Document.

          "Majority Facility Lenders": with respect to any Facility, the holders
of more than 50% of the aggregate unpaid principal amount of the Tranche A Term
Loans, the Tranche B Term Loans or the Total Revolving Extensions of Credit, as
the case may be, outstanding under such Facility (or, in the case of the
Revolving Facility, prior to any termination of the Revolving Commitments, the
holders of more than 50% of the Total Revolving Commitments).

          "Material Adverse Effect": a material adverse effect on (a) the
business, property, operations or condition (financial or otherwise) of CC
Operating and its Subsidiaries taken as a whole or (b) the validity or
enforceability of this Agreement or any of the other Loan Documents or the
rights or remedies of the Administrative Agent or the Lenders hereunder or
thereunder.

          "Materials of Environmental Concern": any gasoline or petroleum
(including crude oil or any fraction thereof) or petroleum products or any
hazardous or toxic substances, materials or wastes, defined or regulated as such
in or under any Environmental Law, including asbestos, polychlorinated biphenyls
and urea-formaldehyde insulation.

          "Multi-employer Plan": a Plan that is a multi-employer plan as defined
in Section 4001(a)(3) of ERISA.

          "Net Cash Proceeds": (a) in connection with any Asset Sale or any
Recovery Event, the proceeds thereof in the form of cash and Cash Equivalents
(including any such proceeds received by way of deferred payment of principal
pursuant to a note or installment receivable or purchase price adjustment
receivable or otherwise, but only as and when received) of such Asset Sale or
Recovery Event, net of attorneys' fees, accountants' fees, investment banking
fees, amounts required to be applied to the repayment of Indebtedness secured by
a Lien expressly permitted hereunder on any asset that is the subject of such
Asset Sale or Recovery Event (other than any Lien pursuant to a Security
Document) and other customary fees and expenses actually incurred in connection
therewith and net of taxes paid or

<PAGE>

                                                                              15

reasonably estimated to be payable as a result thereof (after taking into
account any available tax credits or deductions and any tax sharing
arrangements) and (b) in connection with any issuance or sale of Capital Stock
or any incurrence of Indebtedness, the cash proceeds received from such issuance
or incurrence, net of attorneys' fees, investment banking fees, accountants'
fees, underwriting discounts and commissions and other customary fees and
expenses actually incurred in connection therewith.

          "Non-Excluded Taxes": as defined in Section 2.17(a).

          "Non-U.S. Lender": as defined in Section 2.17(d).

          "Obligations": the unpaid principal of and interest on (including
interest accruing after the maturity of the Loans and Reimbursement Obligations
and interest accruing after the filing of any petition in bankruptcy, or the
commencement of any insolvency, reorganization or like proceeding, relating to
the Borrower, whether or not a claim for post-filing or post-petition interest
is allowed in such proceeding) the Loans and all other obligations and
liabilities of the Borrower to the Administrative Agent or to any Lender (or, in
the case of Hedge Agreements, any affiliate of any Lender), whether direct or
indirect, absolute or contingent, due or to become due, or now existing or
hereafter incurred, which may arise under, out of, or in connection with, this
Agreement, any other Loan Document, the Letters of Credit, any Hedge Agreement
entered into with any Lender or any affiliate of any Lender or any other
document made, delivered or given in connection herewith or therewith, whether
on account of principal, interest, reimbursement obligations, fees, indemnities,
costs, expenses (including all fees, charges and disbursements of counsel to the
Administrative Agent or to any Lender that are required to be paid by the
Borrower pursuant hereto) or otherwise.

          "Original Closing Date": March 15, 2000.

          "Other Taxes": any and all present or future stamp or documentary
taxes or any other excise or property taxes, charges or similar levies arising
from any payment made hereunder or from the execution, delivery or enforcement
of, or otherwise with respect to, this Agreement or any other Loan Document.

          "Participant": as defined in Section 10.6(c).

          "PBGC": the Pension Benefit Guaranty Corporation established pursuant
to Subtitle A of Title IV of ERISA (or any successor).

          "Permitted Borrower Subordinated Indebtedness": Indebtedness of CC
Operating to Holdings which is evidenced by a promissory note substantially
identical to Exhibit I.

          "Permitted Communications Facilities": communications tower
facilities, broadcast facilities or other facilities related to the provision of
broadcast or wireless telecommunications services.

          "Person": an individual, partnership, corporation, limited liability
company, business trust, joint stock company, trust, unincorporated association,
joint venture, Governmental Authority or other entity of whatever nature.

          "Plan": at a particular time, any employee benefit plan that is
covered by ERISA and in respect of which CC Operating or a Commonly Controlled
Entity is (or, if such plan were terminated at such time, would under Section
4069 of ERISA be deemed to be) an "employer" as defined in Section 3(5) of
ERISA.

          "Prepayment Date": as defined in Section 2.15(d).

<PAGE>

                                                                              16

          "Prepayment Option Notice": as defined in Section 2.15(d).

          "Pricing Grid": the pricing grid attached hereto as Annex A.

          "Pro Forma Balance Sheets": as defined in Section 4.1(a).

          "Projections": as defined in Section 6.2(c).

          "Properties": as defined in Section 4.17(a).

          "Recovery Event": any settlement of or payment in respect of any
property or casualty insurance claim or any condemnation proceeding relating to
any asset of CC Operating or any of its Subsidiaries.

          "Refunded Swingline Loans": as defined in Section 2.5(b).

          "Refunding Date": as defined in Section 2.5(c).

          "Register": as defined in Section 10.6(d).

          "Regulation U": Regulation U of the Board as in effect from time to
time.

          "Reimbursement Obligation": the obligation of the Borrower to
reimburse the relevant Issuing Lender pursuant to Section 3.5 for amounts drawn
under Letters of Credit.

          "Reinvestment Deferred Amount": with respect to any Reinvestment
Event, the aggregate Net Cash Proceeds received by CC Operating or any of its
Subsidiaries in connection therewith that are not applied to prepay the Term
Loans or reduce the Revolving Commitments pursuant to Section 2.9(b) as a result
of the delivery of a Reinvestment Notice.

          "Reinvestment Event": any Asset Sale or Recovery Event in respect of
which CC Operating has delivered a Reinvestment Notice.

          "Reinvestment Notice": a written notice executed by a Responsible
Officer stating that CC Operating (directly or indirectly through a Subsidiary)
intends and expects to use all or a specified portion of the Net Cash Proceeds
of an Asset Sale or Recovery Event to acquire or repair assets useful in its
business.

          "Reinvestment Prepayment Amount": with respect to any Reinvestment
Event, the Reinvestment Deferred Amount relating thereto less any amount
expended prior to the relevant Reinvestment Prepayment Date to acquire or repair
assets useful in CC Operating's business.

          "Reinvestment Prepayment Date": with respect to any Reinvestment
Event, the earlier of (a) the date occurring twelve months after such
Reinvestment Event and (b) the date on which CC Operating shall have determined
not to, or shall have otherwise ceased to, acquire or repair assets useful in CC
Operating's business with all or any portion of the relevant Reinvestment
Deferred Amount.

          "Reorganization": with respect to any Multiemployer Plan, the
condition that such plan is in reorganization within the meaning of Section 4241
of ERISA.

          "Reportable Event": any of the events set forth in Section 4043(c) of
ERISA, other than those events as to which the thirty day notice period is
waived under subsections .27, .28, .29, .30, .31, .32, .34 or .35 of PBGC Reg.
Section 4043.

<PAGE>

                                                                              17

          "Required Lenders": at any time, the holders of more than 50% of the
sum of (a) the aggregate unpaid principal amount of the Term Loans then
outstanding and (b) the Total Revolving Commitments then in effect or, if the
Revolving Commitments have been terminated, the Total Revolving Extensions of
Credit then outstanding. The Term Loans outstanding and Revolving Commitments in
effect (or, when applicable, Revolving Extensions of Credit outstanding) of any
Defaulting Lender shall be excluded for purposes of any vote of the Required
Lenders.

          "Requirement of Law": as to any Person, the Certificate of
Incorporation and By-Laws or other organizational or governing documents of such
Person, and any law, treaty, rule or regulation or determination of an
arbitrator or a court or other Governmental Authority, in each case applicable
to or binding upon such Person or any of its property or to which such Person or
any of its property is subject.

          "Responsible Officer": the chief executive officer, president, chief
financial officer, chief accounting officer or treasurer of CC Operating, but in
any event, with respect to financial matters, the chief financial officer of CC
Operating.

          "Restated Tranche B Term Loan": each Existing Tranche B Term Loan
maintained hereunder pursuant to Section 2.1(a)(ii) and each Tranche B Term Loan
into which any Existing Tranche B Term Loan is exchanged pursuant to Section
2.1(a)(iii), in each case having the terms and conditions applicable to Tranche
B Term Loans generally as set forth in this Agreement.

          "Restatement Effective Date": the date on which the conditions
precedent set forth in Section 5.1 shall be satisfied, which date is October 10,
2003.

          "Restricted Payments": as defined in Section 7.6.

          "Revolving Commitment": as to any Lender, the obligation of such
Lender, if any, to make Revolving Loans and participate in Swingline Loans and
Letters of Credit in an aggregate principal and/or face amount not to exceed the
amount set forth under the heading "Revolving Commitment" opposite such Lender's
name on Schedule 1.1A or in the Assignment and Assumption pursuant to which such
Lender became a party hereto, as the same may be changed from time to time
pursuant to the terms hereof. The amount of the Total Revolving Commitments as
of the Restatement Effective Date is $350,000,000.

          "Revolving Commitment Period": the period from and including the
Original Closing Date to the Revolving Termination Date.

          "Revolving Extensions of Credit": as to any Revolving Lender at any
time, an amount equal to the sum of (a) the aggregate principal amount of all
Revolving Loans held by such Lender then outstanding, (b) such Lender's
Revolving Percentage of the L/C Obligations then outstanding and (c) such
Lender's Revolving Percentage of the aggregate principal amount of Swingline
Loans then outstanding.

          "Revolving Facility": as defined in the definition of "Facility".

          "Revolving Lender": each Lender that has a Revolving Commitment or
that holds Revolving Loans.

          "Revolving Loans": as defined in Section 2.1(b).

          "Revolving Percentage": as to any Revolving Lender at any time, the
percentage which such Lender's Revolving Commitment then constitutes of the
Total Revolving Commitments (or, at any time after the Revolving Commitments
shall have expired or terminated, the percentage which the

<PAGE>

                                                                              18

aggregate principal amount of such Lender's Revolving Loans then outstanding
constitutes of the aggregate principal amount of the Revolving Loans then
outstanding).

          "Revolving Termination Date": September 15, 2007.

          "SEC": the Securities and Exchange Commission, any successor thereto
and any analogous Governmental Authority.

          "Security Documents": the collective reference to the Guarantee and
Collateral Agreement, all other security documents hereafter delivered to the
Administrative Agent granting a Lien on any property of any Person to secure the
obligations and liabilities of any Loan Party under any Loan Document and any
separate guarantee agreement entered into by any Subsidiary in order to
guarantee the Obligations.

          "Single Employer Plan": any Plan that is covered by Title IV of ERISA,
but that is not a Multiemployer Plan.

          "Solvent": when used with respect to any Person, means that, as of any
date of determination, (a) the amount of the "present fair saleable value" of
the assets of such Person will, as of such date, exceed the amount of all
"liabilities of such Person, contingent or otherwise" after giving effect to the
expected value of rights of indemnity, contribution and subrogation, as of such
date, as such quoted terms are determined in accordance with applicable federal
and state laws governing determinations of the insolvency of debtors, (b) the
present fair saleable value of the assets of such Person will, as of such date,
be greater than the amount that will be required to pay the liability of such
Person on its debts as such debts become absolute and matured after giving
effect to the expected value of rights of indemnity, contribution and
subrogation, (c) such Person will not have, as of such date, an unreasonably
small amount of capital with which to conduct its business, and (d) such Person
will be able to pay its debts as they mature after giving effect to the expected
value of rights of indemnity, contribution and subrogation. For purposes of this
definition, (i) "debt" means liability on a "claim", and (ii) "claim" means any
(x) right to payment, whether or not such a right is reduced to judgment,
liquidated, unliquidated, fixed, contingent, matured, unmatured, disputed,
undisputed, legal, equitable, secured or unsecured or (y) right to an equitable
remedy for breach of performance if such breach gives rise to a right to
payment, whether or not such right to an equitable remedy is reduced to
judgment, fixed, contingent, matured or unmatured, disputed, undisputed, secured
or unsecured.

          "Specified Change of Control": a "Change of Control" or any defined
term having a comparable purpose contained in the documentation governing any
Indebtedness of Holdings or CC Operating.

          "Specified Intercompany Note": as defined in the definition of
Specified Non-Wholly Owned Subsidiary.

          "Specified Non-Wholly Owned Subsidiary": any Subsidiary of CC
Operating (other than a Wholly Owned Subsidiary) that (a) is designated as such
by CC Operating in a written notice to the Administrative Agent substantially
concurrently with the acquisition thereof and (b) has issued an intercompany
note (a "Specified Intercompany Note") to CC Operating or any Wholly Owned
Qualifying Subsidiary Guarantor representing amounts actually loaned to such
Subsidiary, which note (i) shall be in form and substance satisfactory to the
Administrative Agent and (ii) shall be secured by a valid and perfected Lien on
all assets of such Subsidiary that fall within any of the categories of
"Collateral" referred to in the Guarantee and Collateral Agreement.

<PAGE>

                                                                              19

          "Specified Subsidiary": (a) Crown Castle Australia Limited and any
Subsidiary thereof that is organized under the laws of any jurisdiction in
Australia and (b) Crown Castle UK and any Subsidiary thereof that is organized
under the laws of any jurisdiction in the United Kingdom.

          "Subsidiary": as to any Person, a corporation, partnership, limited
liability company or other entity of which shares of stock or other ownership
interests having ordinary voting power (other than stock or such other ownership
interests having such power only by reason of the happening of a contingency) to
elect a majority of the board of directors or other managers of such
corporation, partnership or other entity are at the time owned, or the
management of which is otherwise controlled, directly or indirectly through one
or more intermediaries, or both, by such Person; provided, that, except as
otherwise specified in this Agreement, Unrestricted Subsidiaries shall be deemed
not to constitute "Subsidiaries" for the purposes of this Agreement (other than
the definitions of "Unrestricted Borrower Subsidiary", "Unrestricted Holdings
Subsidiary" and "Unrestricted Subsidiary" and Sections 6.11 and 7.15). Unless
otherwise qualified, all references to a "Subsidiary" or to "Subsidiaries" in
this Agreement shall refer to a Subsidiary or Subsidiaries of CC Operating.

          "Subsidiary Guarantor": each Subsidiary of CC Operating other than (a)
Subsidiaries of the GTE JV, (b) the Australian Subsidiary and its Subsidiaries,
(c) Crown Castle UK and its Subsidiaries and (d) any Specified Non-Wholly Owned
Subsidiary and its Subsidiaries.

          "Swingline Commitment": the obligation of the Swingline Lender to make
Swingline Loans pursuant to Section 2.4 in an aggregate principal amount at any
one time outstanding not to exceed $15,000,000.

          "Swingline Lender": JPMorgan Chase Bank, in its capacity as the lender
of Swingline Loans.

          "Swingline Loans": as defined in Section 2.4(a).

          "Swingline Participation Amount": as defined in Section 2.5(c).

          "Term Lenders": the collective reference to the Tranche A Term Lenders
and the Tranche B Term Lenders.

          "Term Loans": the collective reference to the Tranche A Term Loans and
Tranche B Term Loans.

          "Total Revolving Commitments": at any time, the aggregate amount of
the Revolving Commitments then in effect.

          "Total Revolving Extensions of Credit": at any time, the aggregate
amount of the Revolving Extensions of Credit of the Revolving Lenders
outstanding at such time.

          "Tower SPV": a Wholly Owned Subsidiary of CC Operating formed for the
sole purpose of holding communications tower facilities.

          "Tranche A Term Facility": as defined in the definition of "Facility".

          "Tranche A Term Lender": each Lender that is the holder of a Tranche A
Term Loan.

          "Tranche A Term Loan": as defined in Section 2.1(a). The aggregate
outstanding principal amount of the Tranche A Term Loans on the Restatement
Effective Date, after giving effect to the prepayment thereof described in
Section 5.1(l), is $192,500,000.

<PAGE>

                                                                              20

          "Tranche A Term Percentage": as to any Tranche A Term Lender at any
time, the percentage which the aggregate principal amount of such Lender's
Tranche A Term Loans then outstanding constitutes of the aggregate principal
amount of all Tranche A Term Loans then outstanding.

          "Tranche B Prepayment Amount": as defined in Section 2.15(d).

          "Tranche B Term Facility": as defined in the definition of "Facility".

          "Tranche B Term Lender": each Lender that holds a Tranche B Term Loan.

          "Tranche B Term Loan": as defined in Section 2.1(a). The aggregate
outstanding principal amount of the Tranche B Term Loans on the Restatement
Effective Date, after giving effect to the borrowing of Incremental Tranche B
Term Loans, is $1,100,000,000.

          "Tranche B Term Percentage": as to any Tranche B Lender at any time,
the percentage which the aggregate principal amount of such Lender's Tranche B
Term Loans then outstanding constitutes of the aggregate principal amount of the
Tranche B Term Loans then outstanding.

          "Transferee": any Assignee or Participant.

          "Type": as to any Loan, its nature as an ABR Loan or a Eurodollar
Loan.

          "UK Roll-Up": as defined in Section 5.1(b).

          "United States": the United States of America.

          "Unrestricted Borrower Subsidiary": (a) any Subsidiary of CC Operating
created, acquired or activated by CC Operating or any of its Subsidiaries and
designated as such by CC Operating substantially concurrently with such
creation, acquisition or activation and (b) any Subsidiary of such designated
Subsidiary, provided, that (i) at no time shall any creditor of any such
Subsidiary have any claim (whether pursuant to a Guarantee Obligation, by
operation of law or otherwise) against Holdings or any of its other Subsidiaries
(other than another Unrestricted Borrower Subsidiary) in respect of any
Indebtedness or other obligation of any such Subsidiary; (ii) neither of
Holdings nor any of its Subsidiaries (other than another Unrestricted Borrower
Subsidiary) shall become a general partner of any such Subsidiary; (iii) no
default with respect to any Indebtedness of any such Subsidiary (including any
right which the holders thereof may have to take enforcement action against any
such Subsidiary) shall permit (upon notice, lapse of time or both) any holder of
any Indebtedness of Holdings or its other Subsidiaries (other than another
Unrestricted Borrower Subsidiary) to declare a default on such other
Indebtedness or cause the payment thereof to be accelerated or payable prior to
its final scheduled maturity; (iv) all Capital Stock of such Subsidiary shall be
held at all times by an Unrestricted Subsidiary SPV; and (v) at the time of such
designation, no Default or Event of Default shall have occurred and be
continuing or would result therefrom.

          "Unrestricted Holdings Subsidiary": (a) any Subsidiary of Holdings
(other than CC Operating and its Subsidiaries) created, acquired or activated by
Holdings or any of its Subsidiaries (other than CC Operating and its
Subsidiaries) and designated as such by Holdings substantially concurrently with
such creation, acquisition or activation and (b) any Subsidiary of such
designated Subsidiary, provided, that (i) at no time shall any creditor of any
such Subsidiary have any claim (whether pursuant to a Guarantee Obligation, by
operation of law or otherwise) against Holdings or any of its other Subsidiaries
(other than another Unrestricted Holdings Subsidiary) in respect of any
Indebtedness or other obligation of any such Subsidiary; (ii) neither Holdings
nor any of its Subsidiaries (other than another Unrestricted Holdings
Subsidiary) shall become a general partner of any such Subsidiary; (iii) no
default with respect to any Indebtedness of any such Subsidiary (including any
right which the holders thereof

<PAGE>

                                                                              21

may have to take enforcement action against any such Subsidiary) shall permit
(upon notice, lapse of time or both) any holder of any Indebtedness of Holdings
or its other Subsidiaries (other than another Unrestricted Holdings Subsidiary)
to declare a default on such other Indebtedness or cause the payment thereof to
be accelerated or payable prior to its final scheduled maturity; (iv) all
Capital Stock of such Subsidiary shall be held at all times by an Unrestricted
Subsidiary SPV; and (v) at the time of such designation, no Default or Event of
Default shall have occurred and be continuing or would result therefrom.

          "Unrestricted Subsidiaries": the collective reference to the
Unrestricted Borrower Subsidiaries and the Unrestricted Holdings Subsidiaries.
It is understood that Unrestricted Subsidiaries shall be disregarded for the
purposes of any calculation pursuant to this Agreement relating to financial
matters with respect to CC Operating. Notwithstanding anything to the contrary
contained in this Agreement, (x) so long as any Australian Intercompany Loans
are outstanding, the Australian Subsidiary shall not be an Unrestricted
Subsidiary, (y) the GTE JV shall not be an Unrestricted Subsidiary and (z) no
Tower SPV or Unrestricted Subsidiary SPV shall be an Unrestricted Subsidiary.

          "Unrestricted Subsidiary SPV": a Wholly Owned Subsidiary of Holdings
or CC Operating, as the case may be, formed for the sole purpose of holding the
Capital Stock of one or more Unrestricted Subsidiaries.

          "Wholly Owned Subsidiary": as to any Person, any other Person all of
the Capital Stock of which (other than directors' qualifying shares required by
law) is owned by such Person directly and/or through other Wholly Owned
Subsidiaries. In order for a Person to qualify as a "Wholly Owned Subsidiary" of
CC Operating or any of its Subsidiaries, such Person must also be a Subsidiary.

          "Wholly Owned Subsidiary Guarantor": any Subsidiary Guarantor that is
a Wholly Owned Subsidiary of CC Operating.

          "Wholly Owned Qualifying Subsidiary Guarantor": any Wholly Owned
Subsidiary Guarantor organized under the laws of any jurisdiction within the
United States, the United Kingdom or Australia.

          1.2   Other Definitional Provisions. (a) Unless otherwise specified
therein, all terms defined in this Agreement shall have the defined meanings
when used in the other Loan Documents or any certificate or other document made
or delivered pursuant hereto or thereto.

     (b) As used herein and in the other Loan Documents, and any certificate or
other document made or delivered pursuant hereto or thereto, (i) accounting
terms relating to Holdings, CC Operating and its Subsidiaries not defined in
Section 1.1 and accounting terms partly defined in Section 1.1, to the extent
not defined, shall have the respective meanings given to them under GAAP, (ii)
the words "include", "includes" and "including" shall be deemed to be followed
by the phrase "without limitation", (iii) the word "incur" shall be construed to
mean incur, create, issue, assume, become liable in respect of or suffer to
exist (and the words "incurred" and "incurrence" shall have correlative
meanings), and (iv) the words "asset" and "property" shall be construed to have
the same meaning and effect and to refer to any and all tangible and intangible
assets and properties, including cash, Capital Stock, securities, revenues,
accounts, leasehold interests and contract rights.

     (c) The words "hereof", "herein" and "hereunder" and words of similar
import when used in this Agreement shall refer to this Agreement as a whole and
not to any particular provision of this Agreement, and Section, Schedule and
Exhibit references are to this Agreement unless otherwise specified.

<PAGE>

                                                                              22

     (d) The meanings given to terms defined herein shall be equally applicable
to both the singular and plural forms of such terms.

     (e) For the purposes of calculating Consolidated EBITDA and Consolidated
Cash Interest Expense for any period of four consecutive fiscal quarters (each,
a "Reference Period") pursuant to any determination of the Consolidated Leverage
Ratio or the Consolidated Debt Service Coverage Ratio, (i) if at any time during
such Reference Period CC Operating or any Subsidiary shall have made any
Material Disposition, the Consolidated EBITDA for such Reference Period shall be
reduced by an amount equal to the Consolidated EBITDA (if positive) attributable
to the property that is the subject of such Material Disposition for such
Reference Period or increased by an amount equal to the Consolidated EBITDA (if
negative) attributable thereto for such Reference Period, and Consolidated Cash
Interest Expense for such Reference Period shall be reduced by an amount equal
to the Consolidated Cash Interest Expense for such Reference Period attributable
to any Indebtedness of CC Operating or any Subsidiary repaid, repurchased,
defeased or otherwise discharged with respect to CC Operating and its
Subsidiaries in connection with such Material Disposition (or, if the Capital
Stock of any Subsidiary is sold, the Consolidated Cash Interest Expense for such
Reference Period directly attributable to the Indebtedness of such Subsidiary to
the extent CC Operating and its continuing Subsidiaries are no longer liable for
such Indebtedness after such Disposition) and (ii) if during such Reference
Period CC Operating or any Subsidiary shall have made a Material Acquisition,
Consolidated EBITDA and Consolidated Cash Interest Expense for such Reference
Period shall be calculated after giving pro forma effect thereto (including the
incurrence or assumption of any Indebtedness in connection therewith) as if such
Material Acquisition (and the incurrence or assumption of any such Indebtedness)
occurred on the first day of such Reference Period. As used herein, "Material
Acquisition" means any acquisition of property or series of related acquisitions
of property that (a) constitutes assets comprising all or substantially all of
an operating unit of a business or constitutes all or substantially all of the
common stock of a Person and (b) involves the payment of consideration by CC
Operating and its Subsidiaries in excess of $1,000,000; and "Material
Disposition" means any Disposition of property or series of related Dispositions
of property that yields gross proceeds to CC Operating or any of its
Subsidiaries in excess of $1,000,000.

                   SECTION 2. AMOUNT AND TERMS OF COMMITMENTS

          2.1   Loans; Commitments. (a) Subject to the terms and conditions
hereof, (i) each Tranche A Term Lender severally agrees to maintain hereunder
its "Tranche A Term Loan" outstanding under the Existing Credit Agreement (each,
a "Tranche A Term Loan"), (ii) each Tranche B Term Lender that was a "Tranche B
Term Lender" under the Existing Credit Agreement (other than the Lenders
referred to in clause (iii) below) severally agrees to maintain hereunder its
Existing Tranche B Term Loan in the form of a Restated Tranche B Term Loan,
(iii) the Borrower hereby offers to each Tranche B Term Lender listed on
Schedule 2.1 to exchange the Existing Tranche B Term Loan set forth in said
Schedule for such Tranche B Term Lender for a Restated Tranche B Term Loan in
the identical principal amount and each such Tranche B Term Lender agrees on the
terms and conditions set forth in this Agreement to exchange its Existing
Tranche B Term Loan for a Restated Tranche B Term Loan in the identical
principal amount, and (iv) each Incremental Tranche B Term Lender severally
agrees to make an incremental term loan (each, an "Incremental Tranche B Term
Loan"; together with the Loans referred to in clauses (ii) and (iii) above, the
"Tranche B Term Loans") to the Borrower on the Restatement Effective Date in an
amount not to exceed the Incremental Tranche B Term Commitment of such Lender.
The Term Loans may from time to time be Eurodollar Loans or ABR Loans, as
determined by the Borrower and notified to the Administrative Agent in
accordance with Sections 2.2 and 2.10.

          (b) Subject to the terms and conditions hereof, each Revolving Lender
severally agrees to make revolving credit loans ("Revolving Loans") to the
Borrower from time to time during the Revolving Commitment Period in an
aggregate principal amount at any one time outstanding which, when added to such
Lender's Revolving Percentage of the sum of (i) the L/C Obligations then
outstanding and (ii) the aggregate principal amount of the Swingline Loans then
outstanding, does not

<PAGE>

                                                                              23

exceed the amount of such Lender's Revolving Commitment. During the Revolving
Commitment Period the Borrower may use the Revolving Commitments by borrowing,
prepaying the Revolving Loans in whole or in part, and reborrowing, all in
accordance with the terms and conditions hereof. The Revolving Loans may from
time to time be Eurodollar Loans or ABR Loans, as determined by the Borrower and
notified to the Administrative Agent in accordance with Sections 2.2 and 2.10.

          2.2   Procedure for Borrowing. In order to effect a borrowing
hereunder, the Borrower shall give the Administrative Agent irrevocable notice
(which notice must be received by the Administrative Agent prior to 12:00 Noon,
New York City time, (a) three Business Days prior to the requested Borrowing
Date, in the case of Eurodollar Loans, or (b) one Business Day prior to the
requested Borrowing Date, in the case of ABR Loans), specifying (i) the Facility
under which such borrowing is to be made, (ii) the amount and Type of Loans to
be borrowed, (iii) the requested Borrowing Date and (iv) in the case of
Eurodollar Loans, the respective amounts of each such Type of Loan and the
respective lengths of the initial Interest Period therefor. Each borrowing shall
be in an aggregate amount equal to (x) in the case of ABR Loans, $5,000,000 or a
whole multiple of $1,000,000 in excess thereof (or, if the then aggregate
Available Revolving Commitments are less than $5,000,000, such lesser amount)
and (y) in the case of Eurodollar Loans, $10,000,000 or a whole multiple of
$1,000,000 in excess thereof; provided, that the Swingline Lender may request,
on behalf of the Borrower, borrowings under the Revolving Commitments that are
ABR Loans in other amounts pursuant to Section 2.5. Upon receipt of any such
notice from the Borrower, the Administrative Agent shall promptly notify each
relevant Lender thereof. Each relevant Lender will make the amount of its pro
rata share of each borrowing available to the Administrative Agent for the
account of the Borrower at the Funding Office prior to 12:00 Noon, New York City
time, on the Borrowing Date requested by the Borrower in funds immediately
available to the Administrative Agent. Such borrowing will then be made
available to the Borrower by the Administrative Agent crediting the account of
the Borrower on the books of such office with the aggregate of the amounts made
available to the Administrative Agent by the relevant Lenders and in like funds
as received by the Administrative Agent.

          2.3   Repayment of Loans; Early Maturity. (a) After giving effect to
the prepayment thereof described in Section 5.1(l), the Tranche A Term Loans of
each Tranche A Term Lender shall mature in 14 consecutive quarterly
installments, each of which shall be in an amount equal to such Lender's Tranche
A Term Percentage multiplied by the amount set forth below opposite such
installment:

               Date                                     Amount
               ------------------                   --------------
               June 30, 2004                         $8,865,131.58
               September 30, 2004                    $8,865,131.58
               December 31, 2004                     $8,865,131.58
               March 31, 2005                        $8,865,131.58
               June 30, 2005                        $11,398,026.32
               September 30, 2005                   $11,398,026.32
               December 31, 2005                    $11,398,026.32
               March 31, 2006                       $11,398,026.32
               June 30, 2006                        $15,197,368.42
               September 30, 2006                   $15,197,368.42
               December 31, 2006                    $15,197,368.42
               March 31, 2007                       $15,197,368.42
               June 30, 2007                        $25,328,947.37
               September 15, 2007                   $25,328,947.37

          (b) The Tranche B Term Loans of each Tranche B Term Lender shall
mature in 28 consecutive quarterly installments (each due on the last day of
each calendar quarter), commencing on December 31, 2003, each of which shall be
in an amount equal to such Lender's Tranche B Term

<PAGE>

                                                                              24

Percentage multiplied by (i) in the case of the first 27 such installments,
$2,750,000 and (ii) in the case of the last such installment (which shall be due
on September 30, 2010), $1,025,750,000.

          (c) The Total Revolving Commitments shall be permanently reduced on
each of the dates set forth below by an aggregate amount equal to the amount set
forth opposite such date:

               Date                                       Amount
               ------------------                      -----------
               December 31, 2003                        $8,750,000
               March 31, 2004                           $8,750,000
               June 30, 2004                           $15,312,500
               September 30, 2004                      $15,312,500
               December 31, 2004                       $15,312,500
               March 31, 2005                          $15,312,500
               June 30, 2005                           $19,687,500
               September 30, 2005                      $19,687,500
               December 31, 2005                       $19,687,500
               March 31, 2006                          $19,687,500
               June 30, 2006                           $26,250,000
               September 30, 2006                      $26,250,000
               December 31, 2006                       $26,250,000
               March 31, 2007                          $26,250,000
               June 30, 2007                           $43,750,000
               September 15, 2007                      $43,750,000

          (d) Any reduction or termination of the Revolving Commitments pursuant
to this Section 2.3 shall be accompanied by prepayment of the Revolving Loans
and/or Swingline Loans to the extent that the Total Revolving Extensions of
Credit exceed the amount of the Total Revolving Commitments after giving effect
thereto, provided that if the aggregate principal amount of Revolving Loans and
Swingline Loans then outstanding is less than the amount of such excess (because
L/C Obligations constitute a portion thereof), the Borrower shall, to the extent
of the balance of such excess, replace outstanding Letters of Credit and/or
deposit an amount in cash in a cash collateral account established with the
Administrative Agent for the benefit of the Lenders on terms and conditions
satisfactory to the Administrative Agent. The application of any prepayment
pursuant to this paragraph shall be made, first, to ABR Loans and, second, to
Eurodollar Loans. Each prepayment of the Loans under this paragraph (other than
ABR Loans and Swingline Loans) shall be accompanied by accrued interest to the
date of such prepayment on the amount prepaid.

          (e) For the avoidance of doubt, (i) all then outstanding Loans (other
than Tranche B Term Loans) shall be repaid, and all then outstanding Revolving
Commitments shall be terminated, on September 15, 2007 and (ii) all then
outstanding Tranche B Term Loans shall be repaid on September 30, 2010.

          (f) Notwithstanding anything to the contrary in this Agreement, all
outstanding Loans shall be repaid and all outstanding Commitments shall be
terminated on the date that is six months prior to the date of any scheduled
maturity or redemption of Indebtedness or preferred stock of Holdings (other
than Holdings' 4% Convertible Senior Notes due July 15, 2010). For avoidance of
doubt, if any Indebtedness or preferred stock of Holdings is refinanced or
otherwise extended such that it becomes scheduled to mature or be redeemed on a
later date, such Indebtedness or preferred stock will be considered thereafter
to be scheduled to mature or be redeemed on such later date.

          2.4   Swingline Commitment. (a) Subject to the terms and conditions
hereof, the Swingline Lender agrees to make a portion of the credit otherwise
available to the Borrower under the

<PAGE>

                                                                              25

Revolving Commitments from time to time during the Revolving Commitment Period
by making swingline loans ("Swingline Loans") to the Borrower; provided that (i)
the aggregate principal amount of Swingline Loans outstanding at any time shall
not exceed the Swingline Commitment then in effect (notwithstanding that the
Swingline Loans outstanding at any time, when aggregated with the Swingline
Lender's other outstanding Revolving Loans hereunder, may exceed the Swingline
Commitment then in effect) and (ii) the Borrower shall not request, and the
Swingline Lender shall not make, any Swingline Loan if, after giving effect to
the making of such Swingline Loan, the aggregate amount of the Available
Revolving Commitments would be less than zero. During the Revolving Commitment
Period, the Borrower may use the Swingline Commitment by borrowing, repaying and
reborrowing, all in accordance with the terms and conditions hereof. Swingline
Loans shall be ABR Loans only.

          (b) The Borrower shall repay all outstanding Swingline Loans on the
Revolving Termination Date.

          2.5   Procedure for Swingline Borrowing; Refunding of Swingline Loans.
(a) Whenever the Borrower desires that the Swingline Lender make Swingline Loans
it shall give the Swingline Lender irrevocable telephonic notice confirmed
promptly in writing (which telephonic notice must be received by the Swingline
Lender not later than 2:00 P.M., New York City time, on the proposed Borrowing
Date), specifying (i) the amount to be borrowed and (ii) the requested Borrowing
Date (which shall be a Business Day during the Revolving Commitment Period).
Each borrowing under the Swingline Commitment shall be in an amount equal to
$1,000,000 or a whole multiple of $500,000 in excess thereof. Not later than
3:00 P.M., New York City time, on the Borrowing Date specified in a notice in
respect of Swingline Loans, the Swingline Lender shall make available to the
Administrative Agent at the Funding Office an amount in immediately available
funds equal to the amount of the Swingline Loan to be made by the Swingline
Lender. The Administrative Agent shall make the proceeds of such Swingline Loan
available to the Borrower on such Borrowing Date by depositing such proceeds in
the account of the Borrower with the Administrative Agent on such Borrowing Date
in immediately available funds.

          (b) The Swingline Lender, at any time and from time to time in its
sole and absolute discretion may, on behalf of the Borrower (which hereby
irrevocably directs the Swingline Lender to act on its behalf), on one Business
Day's notice given by the Swingline Lender no later than 12:00 Noon, New York
City time, request each Revolving Lender to make, and each Revolving Lender
hereby agrees to make, a Revolving Loan, in an amount equal to such Revolving
Lender's Revolving Percentage of the aggregate amount of the Swingline Loans
(the "Refunded Swingline Loans") outstanding on the date of such notice, to
repay the Swingline Lender. Each Revolving Lender shall make the amount of such
Revolving Loan available to the Administrative Agent at the Funding Office in
immediately available funds, not later than 10:00 A.M., New York City time, one
Business Day after the date of such notice. The proceeds of such Revolving Loans
shall be immediately made available by the Administrative Agent to the Swingline
Lender for application by the Swingline Lender to the repayment of the Refunded
Swingline Loans. The Borrower irrevocably authorizes the Swingline Lender to
charge the Borrower's accounts with the Administrative Agent (up to the amount
available in each such account) in order to immediately pay the amount of such
Refunded Swingline Loans to the extent amounts received from the Revolving
Lenders are not sufficient to repay in full such Refunded Swingline Loans.

          (c) If prior to the time a Revolving Loan would have otherwise been
made pursuant to Section 2.5(b), one of the events described in Section 8(f)
shall have occurred and be continuing with respect to the Borrower or if for any
other reason, as determined by the Swingline Lender in its sole discretion,
Revolving Loans may not be made as contemplated by Section 2.5(b), each
Revolving Lender shall, on the date such Revolving Loan was to have been made
pursuant to the notice referred to in Section 2.5(b) (the "Refunding Date"),
purchase for cash an undivided participating interest in the then outstanding
Swingline Loans by paying to the Swingline Lender an amount (the "Swingline
Participation Amount") equal to (i) such Revolving Lender's Revolving Percentage
times (ii) the sum of the aggregate

<PAGE>

                                                                              26

principal amount of Swingline Loans then outstanding that were to have been
repaid with such Revolving Loans.

          (d) Whenever, at any time after the Swingline Lender has received from
any Revolving Lender such Lender's Swingline Participation Amount, the Swingline
Lender receives any payment on account of the Swingline Loans, the Swingline
Lender will distribute to such Lender its Swingline Participation Amount
(appropriately adjusted, in the case of interest payments, to reflect the period
of time during which such Lender's participating interest was outstanding and
funded and, in the case of principal and interest payments, to reflect such
Lender's pro rata portion of such payment if such payment is not sufficient to
pay the principal of and interest on all Swingline Loans then due); provided,
however, that in the event that such payment received by the Swingline Lender is
required to be returned, such Revolving Lender will return to the Swingline
Lender any portion thereof previously distributed to it by the Swingline Lender.

          (e) Each Revolving Lender's obligation to make the Loans referred to
in Section 2.5(b) and to purchase participating interests pursuant to Section
2.5(c) shall be absolute and unconditional and shall not be affected by any
circumstance, including (i) any setoff, counterclaim, recoupment, defense or
other right that such Revolving Lender or the Borrower may have against the
Swingline Lender, the Borrower or any other Person for any reason whatsoever;
(ii) the occurrence or continuance of a Default or an Event of Default or the
failure to satisfy any of the other conditions specified in Section 5; (iii) any
adverse change in the condition (financial or otherwise) of the Borrower; (iv)
any breach of this Agreement or any other Loan Document by the Borrower, any
other Loan Party or any other Revolving Lender; or (v) any other circumstance,
happening or event whatsoever, whether or not similar to any of the foregoing.

          2.6   Commitment Fees, etc.(a) The Borrower agrees to pay to the
Administrative Agent for the account of each Revolving Lender a nonrefundable
commitment fee for the period from and including the Original Closing Date to
the last day of the Revolving Commitment Period, computed at the Commitment Fee
Rate on the average daily amount of the Available Revolving Commitment of such
Lender during the period for which payment is made, payable quarterly in arrears
on the last day of each March, June, September and December and on the Revolving
Termination Date.

          (b) The Borrower agrees to pay to the Administrative Agent the fees in
the amounts and on the dates previously agreed to in writing by the Borrower and
the Administrative Agent.

          2.7   Termination or Reduction of Commitments. The Borrower shall have
the right, upon not less than three Business Days' notice to the Administrative
Agent, to terminate the Revolving Commitments or, from time to time, to reduce
the amount of the Revolving Commitments; provided that no such termination or
reduction of Revolving Commitments shall be permitted if, after giving effect
thereto and to any prepayments of the Revolving Loans and Swingline Loans made
on the effective date thereof, the Total Revolving Extensions of Credit would
exceed the Total Revolving Commitments. Any such reduction shall be in an amount
equal to $10,000,000, or a whole multiple of $1,000,000 in excess thereof, and
shall reduce permanently the Revolving Commitments then in effect.

          2.8   Optional Prepayments. The Borrower may at any time and from time
to time prepay the Loans, in whole or in part, without premium or penalty, upon
irrevocable notice delivered to the Administrative Agent at least three Business
Days prior thereto in the case of Eurodollar Loans and at least one Business Day
prior thereto in the case of ABR Loans, which notice shall specify the date and
amount of prepayment and whether the prepayment is of Eurodollar Loans or ABR
Loans; provided, that if a Eurodollar Loan is prepaid on any day other than the
last day of the Interest Period applicable thereto, the Borrower shall also pay
any amounts owing pursuant to Section 2.18. Upon receipt of any such notice the
Administrative Agent shall promptly notify each relevant Lender thereof. If any
such notice is

<PAGE>

                                                                              27

given, the amount specified in such notice shall be due and payable on the date
specified therein, together with (except in the case of Revolving Loans that are
ABR Loans and Swingline Loans) accrued interest to such date on the amount
prepaid. Partial prepayments of Term Loans and Revolving Loans shall be in an
aggregate principal amount of $5,000,000 or a whole multiple of $1,000,000 in
excess thereof. Partial prepayments of Swingline Loans shall be in an aggregate
principal amount of $1,000,000 or a whole multiple of $500,000 in excess
thereof. Prepayments of Tranche B Term Loans pursuant to this Section 2.8 shall
be at par plus accrued interest on the amount prepaid plus a premium. The
premium shall initially be 2% of the aggregate principal amount prepaid, shall
decline to 1% on the first anniversary of the Restatement Effective Date and,
from and after the second anniversary of the Restatement Effective Date, shall
be 0%.

          2.9   Mandatory Prepayments and Commitment Reductions. (a) If any
Indebtedness shall be incurred by CC Operating or any of its Subsidiaries
(excluding any Indebtedness incurred in accordance with Section 7.2), an amount
equal to 100% of the Net Cash Proceeds thereof shall be applied on the date of
such incurrence toward the prepayment of the Term Loans and the reduction of the
Revolving Commitments as set forth in Section 2.9(d).

          (b) If on any date CC Operating or any of its Subsidiaries shall
receive Net Cash Proceeds from any Asset Sale or Recovery Event then, unless a
Reinvestment Notice shall be delivered in respect thereof, such Net Cash
Proceeds shall be applied on such date toward the prepayment of the Term Loans
and the reduction of the Revolving Commitments as set forth in Section 2.9(d);
provided, that, notwithstanding the foregoing, (i) the aggregate Net Cash
Proceeds of Asset Sales and Recovery Events that may be excluded from the
foregoing requirement pursuant to a Reinvestment Notice shall not exceed
$20,000,000 in any fiscal year of CC Operating and (ii) on each Reinvestment
Prepayment Date, an amount equal to the Reinvestment Prepayment Amount with
respect to the relevant Reinvestment Event shall be applied toward the
prepayment of the Term Loans and the reduction of the Revolving Commitments as
set forth in Section 2.9(d).

          (c) If, for any fiscal year of CC Operating commencing with the fiscal
year ending December 31, 2003, there shall be Excess Cash Flow, the Borrower
shall, on the relevant Excess Cash Flow Application Date, apply 50% of such
Excess Cash Flow toward the prepayment of the Term Loans and the reduction of
the Revolving Commitments as set forth in Section 2.9(d). Each such prepayment
and commitment reduction shall be made on a date (an "Excess Cash Flow
Application Date") no later than five days after the earlier of (i) the date on
which the financial statements of CC Operating referred to in Section 6.1(a),
for the fiscal year with respect to which such prepayment is made, are required
to be delivered to the Lenders and (ii) the date such financial statements are
actually delivered.

          (d) Amounts to be applied in connection with prepayments and
Commitment reductions made pursuant to Section 2.9 shall be applied, first, to
prepay the Term Loans and, second, to reduce permanently the Revolving
Commitments. Any such reduction of the Revolving Commitments shall be
accompanied by prepayment of the Revolving Loans and/or Swingline Loans to the
extent, if any, that the Total Revolving Extensions of Credit exceed the amount
of the Total Revolving Commitments as so reduced, provided that if the aggregate
principal amount of Revolving Loans and Swingline Loans then outstanding is less
than the amount of such excess (because L/C Obligations constitute a portion
thereof), the Borrower shall, to the extent of the balance of such excess,
replace outstanding Letters of Credit and/or deposit an amount in cash in a cash
collateral account established with the Administrative Agent for the benefit of
the Lenders on terms and conditions satisfactory to the Administrative Agent.
The application of any prepayment pursuant to Section 2.9 shall be made, first,
to ABR Loans and, second, to Eurodollar Loans. Each prepayment of the Loans
under Section 2.9 (except in the case of Revolving Loans that are ABR Loans and
Swingline Loans) shall be accompanied by accrued interest to the date of such
prepayment on the amount prepaid.

<PAGE>

                                                                              28

          2.10  Conversion and Continuation Options. (a) The Borrower may elect
from time to time to convert Eurodollar Loans to ABR Loans by giving the
Administrative Agent at least two Business Days' prior irrevocable notice of
such election, provided that any such conversion of Eurodollar Loans may only be
made on the last day of an Interest Period with respect thereto. The Borrower
may elect from time to time to convert ABR Loans to Eurodollar Loans by giving
the Administrative Agent at least three Business Days' prior irrevocable notice
of such election (which notice shall specify the length of the initial Interest
Period therefor), provided that no ABR Loan under a particular Facility may be
converted into a Eurodollar Loan when any Event of Default has occurred and is
continuing and the Administrative Agent or the Majority Facility Lenders in
respect of such Facility have determined in its or their sole discretion not to
permit such conversions. Upon receipt of any such notice the Administrative
Agent shall promptly notify each relevant Lender thereof.

          (b) Any Eurodollar Loan may be continued as such upon the expiration
of the then current Interest Period with respect thereto by the Borrower giving
irrevocable notice to the Administrative Agent, in accordance with the
applicable provisions of the term "Interest Period" set forth in Section 1.1, of
the length of the next Interest Period to be applicable to such Loans, provided
that no Eurodollar Loan under a particular Facility may be continued as such
when any Event of Default has occurred and is continuing and the Administrative
Agent has or the Majority Facility Lenders in respect of such Facility have
determined in its or their sole discretion not to permit such continuations, and
provided, further, that if the Borrower shall fail to give any required notice
as described above in this paragraph or if such continuation is not permitted
pursuant to the preceding proviso each such Loan shall be automatically
converted to a Eurodollar Loan with an Interest Period of one month on the last
day of such then expiring Interest Period. Upon receipt of any such notice the
Administrative Agent shall promptly notify each relevant Lender thereof.

          2.11  Limitations on Eurodollar Tranches. Notwithstanding anything to
the contrary in this Agreement, all borrowings, conversions and continuations of
Eurodollar Loans hereunder and all selections of Interest Periods hereunder
shall be in such amounts and be made pursuant to such elections so that, (a)
after giving effect thereto, the aggregate principal amount of the Eurodollar
Loans comprising each Eurodollar Tranche shall be equal to $10,000,000 or a
whole multiple of $1,000,000 in excess thereof and (b) no more than twenty
Eurodollar Tranches shall be outstanding at any one time.

          2.12  Interest Rates and Payment Dates. (a) Each Eurodollar Loan shall
bear interest for each day during each Interest Period with respect thereto at a
rate per annum equal to the Eurodollar Rate determined for such day plus the
Applicable Margin.

          (b) Each ABR Loan shall bear interest at a rate per annum equal to the
ABR plus the Applicable Margin.

          (c) (i) If all or a portion of the principal amount of any Loan or
Reimbursement Obligation shall not be paid when due (whether at the stated
maturity, by acceleration or otherwise), such overdue amount shall bear interest
at a rate per annum equal to (x) in the case of the Loans, the rate that would
otherwise be applicable thereto pursuant to the foregoing provisions of this
Section plus 2% or (y) in the case of Reimbursement Obligations, the rate
applicable to ABR Loans under the Revolving Facility plus 2%, and (ii) if all or
a portion of any interest payable on any Loan or Reimbursement Obligation or any
commitment fee or other amount payable hereunder shall not be paid when due
(whether at the stated maturity, by acceleration or otherwise), such overdue
amount shall bear interest at a rate per annum equal to the rate then applicable
to ABR Loans under the relevant Facility plus 2% (or, in the case of any such
other amounts that do not relate to a particular Facility, the rate then
applicable to ABR Loans under the Revolving Facility plus 2%), in each case,
with respect to clauses (i) and (ii) above, from the date of such non-payment
until such amount is paid in full (as well after as before judgment).

<PAGE>

                                                                              29

          (d) Interest shall be payable in arrears on each Interest Payment
Date, provided that interest accruing pursuant to paragraph (c) of this Section
shall be payable from time to time on demand.

          2.13  Computation of Interest and Fees. (a) Interest and fees payable
pursuant hereto shall be calculated on the basis of a 360-day year for the
actual days elapsed, except that, with respect to ABR Loans the rate of interest
on which is calculated on the basis of the Prime Rate, the interest thereon
shall be calculated on the basis of a 365- (or 366-, as the case may be) day
year for the actual days elapsed. The Administrative Agent shall as soon as
practicable notify the Borrower and the relevant Lenders of each determination
of a Eurodollar Rate. Any change in the interest rate on a Loan resulting from a
change in the ABR or the Eurocurrency Reserve Requirements shall become
effective as of the opening of business on the day on which such change becomes
effective. The Administrative Agent shall as soon as practicable notify the
Borrower and the relevant Lenders of the effective date and the amount of each
such change in interest rate.

          (b) Each determination of an interest rate by the Administrative Agent
pursuant to any provision of this Agreement shall be conclusive and binding on
the Borrower and the Lenders in the absence of manifest error. The
Administrative Agent shall, at the request of the Borrower, deliver to the
Borrower a statement showing the quotations used by the Administrative Agent in
determining any interest rate pursuant to Section 2.12(a).

          2.14  Inability to Determine Interest Rate. If prior to the first day
of any Interest Period:

          (a) the Administrative Agent shall have determined (which
     determination shall be conclusive and binding upon the Borrower) 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) the Administrative Agent shall have received notice from the
     Majority Facility Lenders in respect of the relevant Facility that the
     Eurodollar Rate determined or to be determined for such Interest Period
     will not adequately and fairly reflect the cost to such Lenders (as
     conclusively certified by such Lenders) of making or maintaining their
     affected Loans during such Interest Period the Administrative Agent shall
     give telecopy or telephonic notice thereof to the Borrower and the relevant
     Lenders as soon as practicable thereafter. If such notice is given (x) any
     Eurodollar Loans under the relevant Facility requested to be made on the
     first day of such Interest Period shall be made as ABR Loans, (y) any Loans
     under the relevant Facility that were to have been converted on the first
     day of such Interest Period to Eurodollar Loans shall be continued as ABR
     Loans and (z) any outstanding Eurodollar Loans under the relevant Facility
     shall be converted, on the last day of the then-current Interest Period, to
     ABR Loans. Until such notice has been withdrawn by the Administrative
     Agent, no further Eurodollar Loans under the relevant Facility shall be
     made or continued as such, nor shall the Borrower have the right to convert
     Loans under the relevant Facility to Eurodollar Loans.

          2.15  Pro Rata Treatment and Payments. (a) Each borrowing by the
Borrower from the Lenders hereunder, each payment by the Borrower on account of
any commitment fee and any reduction of the Revolving Commitments of the Lenders
shall be made pro rata according to the respective Incremental Tranche B Term
Commitments or Revolving Commitments, as the case may be, of the relevant
Lenders.

          (b) Each payment (including each prepayment) by the Borrower on
account of principal of and interest on the Term Loans shall be made pro rata
according to the respective outstanding principal amounts of the Term Loans then
held by the Term Lenders (except as otherwise provided in Section

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                                                                              30

2.15(d)). The amount of each principal prepayment of the Term Loans shall be
applied to reduce the then remaining installments of the Tranche A Term Loans
and Tranche B Term Loans, as the case may be, pro rata based upon the then
remaining principal amount thereof; provided that optional prepayments of the
Term Loans made pursuant to Section 2.8 may, at the Borrower's option, (i) be
applied exclusively to Tranche A Term Loans and/or (ii) first be applied to the
next two originally scheduled installments of the Tranche A Term Loans and
Tranche B Term Loans, as the case may be, until such installments have been paid
in full. Amounts repaid or prepaid on account of the Term Loans may not be
reborrowed.

          (c) Each payment (including each prepayment) by the Borrower on
account of principal of and interest on the Revolving Loans shall be made pro
rata according to the respective outstanding principal amounts of the Revolving
Loans then held by the Revolving Lenders.

          (d) Notwithstanding anything to the contrary in this Agreement, with
respect to the amount of any mandatory prepayment of the Term Loans pursuant to
Section 2.9, that in any such case is allocated to Tranche B Term Loans (such
amount, the "Tranche B Prepayment Amount"), at any time when Tranche A Term
Loans remain outstanding, the Borrower will, in lieu of applying such amount to
the prepayment of Tranche B Term Loans, on the date specified in Section 2.9 for
such prepayment, give the Administrative Agent telephonic notice (promptly
confirmed in writing) requesting that the Administrative Agent prepare and
provide to each Tranche B Lender a notice (each, a "Prepayment Option Notice")
as described below. As promptly as practicable after receiving such notice from
the Borrower, the Administrative Agent will send to each Tranche B Lender a
Prepayment Option Notice, which shall be in the form of Exhibit G, and shall
include an offer by the Borrower to prepay on the date (each a "Prepayment
Date") that is 10 Business Days after the date of the Prepayment Option Notice,
the Tranche B Term Loans of such Lender by an amount equal to the portion of the
Prepayment Amount indicated in such Lender's Prepayment Option Notice as being
applicable to such Lender's Tranche B Term Loans. On the Prepayment Date, (i)
the Borrower shall pay to the relevant Tranche B Lenders the aggregate amount
necessary to prepay that portion of the outstanding relevant Term Loans in
respect of which such Lenders have accepted prepayment as described in the
Prepayment Option Notice and (ii) the Borrower shall pay to the Tranche A
Lenders an amount equal to the portion of the Tranche B Prepayment Amount not
accepted by the relevant Lenders, and such amount shall be applied to the
prepayment of the Tranche A Term Loans.

          (e) All payments (including prepayments) to be made by the Borrower
hereunder, whether on account of principal, interest, fees or otherwise, shall
be made without setoff or counterclaim and shall be made prior to 12:00 Noon,
New York City time, on the due date thereof to the Administrative Agent, for the
account of the Lenders, at the Funding Office, in Dollars and in immediately
available funds. The Administrative Agent shall distribute such payments to the
Lenders promptly upon receipt in like funds as received. If any payment
hereunder (other than payments on the Eurodollar Loans) becomes due and payable
on a day other than a Business Day, such payment shall be extended to the next
succeeding Business Day. If any payment on a Eurodollar Loan becomes due and
payable on a day other than a Business Day, the maturity thereof shall be
extended to the next succeeding Business Day unless the result of such extension
would be to extend such payment into another calendar month, in which event such
payment shall be made on the immediately preceding Business Day. In the case of
any extension of any payment of principal pursuant to the preceding two
sentences, interest thereon shall be payable at the then applicable rate during
such extension.

          (f) Unless the Administrative Agent shall have been notified in
writing by any Lender prior to a borrowing that such Lender will not make the
amount that would constitute its share of such borrowing available to the
Administrative Agent, the Administrative Agent may assume that such Lender is
making such amount available to the Administrative Agent, and the Administrative
Agent may, in reliance upon such assumption, make available to the Borrower a
corresponding amount. If such amount is not made available to the Administrative
Agent by the required time on the Borrowing Date therefor,

<PAGE>

                                                                              31

such Lender shall pay to the Administrative Agent, on demand, such amount with
interest thereon at a rate equal to the daily average Federal Funds Effective
Rate for the period until such Lender makes such amount immediately available to
the Administrative Agent. A certificate of the Administrative Agent submitted to
any Lender with respect to any amounts owing under this paragraph shall be
conclusive in the absence of manifest error. If such Lender's share of such
borrowing is not made available to the Administrative Agent by such Lender
within three Business Days of such Borrowing Date, the Administrative Agent
shall also be entitled to recover such amount with interest thereon at the rate
per annum applicable to ABR Loans under the relevant Facility, on demand, from
the Borrower.

          (g) Unless the Administrative Agent shall have been notified in
writing by the Borrower prior to the date of any payment being made hereunder
that the Borrower will not make such payment to the Administrative Agent, the
Administrative Agent may assume that the Borrower is making such payment, and
the Administrative Agent may, but shall not be required to, in reliance upon
such assumption, make available to the Lenders their respective pro rata shares
of a corresponding amount. If such payment is not made to the Administrative
Agent by the Borrower within three Business Days of such required date, the
Administrative Agent shall be entitled to recover, on demand, from each Lender
to which any amount which was made available pursuant to the preceding sentence,
such amount with interest thereon at the rate per annum equal to the daily
average Federal Funds Effective Rate. Nothing herein shall be deemed to limit
the rights of the Administrative Agent or any Lender against the Borrower.

          2.16  Requirements of Law. (a) If the adoption of or any change in any
Requirement of Law or in the interpretation or application thereof or compliance
by any Lender with any request or directive (whether or not having the force of
law) from any central bank or other Governmental Authority made subsequent to
the Restatement Effective Date:

          (i)   shall subject any Lender to any tax of any kind whatsoever with
     respect to this Agreement, any Letter of Credit, any Application or any
     Eurodollar Loan made by it, or change the basis of taxation of payments to
     such Lender in respect thereof (except for Non-Excluded Taxes covered by
     Section 2.17 and changes in the rate of tax on the overall net income of
     such Lender);

          (ii)  shall impose, modify or hold applicable any reserve, special
     deposit, compulsory loan or similar requirement against assets held by,
     deposits or other liabilities in or for the account of, advances, loans or
     other extensions of credit by, or any other acquisition of funds by, any
     office of such Lender that is not otherwise included in the determination
     of the Eurodollar Rate hereunder; or

          (iii) shall impose on such Lender any other condition;

and the result of any of the foregoing is to increase the cost to such Lender,
by an amount that such Lender deems to be material, of making, converting into,
continuing or maintaining Eurodollar Loans or issuing or participating in
Letters of Credit, or to reduce any amount receivable hereunder in respect
thereof, then, in any such case, the Borrower shall promptly pay such Lender,
upon its demand, any additional amounts necessary to compensate such Lender for
such increased cost or reduced amount receivable. If any Lender becomes entitled
to claim any additional amounts pursuant to this paragraph, it shall promptly
notify the Borrower (with a copy to the Administrative Agent) of the event by
reason of which it has become so entitled.

          (b) If any Lender shall have determined that the adoption of or any
change in any Requirement of Law regarding capital adequacy or in the
interpretation or application thereof or compliance by such Lender or any
corporation controlling such Lender with any request or directive

<PAGE>

                                                                              32

regarding capital adequacy (whether or not having the force of law) from any
Governmental Authority made subsequent to the Restatement Effective Date shall
have the effect of reducing the rate of return on such Lender's or such
corporation's capital as a consequence of its obligations hereunder or under or
in respect of any Letter of Credit to a level below that which such Lender or
such corporation could have achieved but for such adoption, change or compliance
(taking into consideration such Lender's or such corporation's policies with
respect to capital adequacy) by an amount deemed by such Lender to be material,
then from time to time, after submission by such Lender to the Borrower (with a
copy to the Administrative Agent) of a written request therefor, the Borrower
shall pay to such Lender such additional amount or amounts as will compensate
such Lender for such reduction; provided that the Borrower shall not be required
to compensate a Lender pursuant to this paragraph for any amounts incurred more
than six months prior to the date that such Lender notifies the Borrower of such
Lender's intention to claim compensation therefor; and provided further that, if
the circumstances giving rise to such claim have a retroactive effect, then such
six-month period shall be extended to include the period of such retroactive
effect.

          (c) A certificate, setting forth a reasonably detailed explanation as
to the reason for any additional amounts payable pursuant to this Section,
submitted by any Lender to the Borrower (with a copy to the Administrative
Agent) shall be conclusive in the absence of manifest error. The obligations of
the Borrower pursuant to this Section shall survive the termination of this
Agreement and the payment of the Loans and all other amounts payable hereunder.

          2.17  Taxes. (a) all payments made by the Borrower under this
Agreement shall be made free and clear of, and without deduction or withholding
for or on account of, any present or future income, stamp or other taxes,
levies, imposts, duties, charges, fees, deductions or withholdings, now or
hereafter imposed, levied, collected, withheld or assessed by any Governmental
Authority, excluding net income taxes and franchise taxes (imposed in lieu of
net income taxes) imposed on the Administrative Agent or any Lender as a result
of a present or former connection between the Administrative Agent or such
Lender and the jurisdiction of the Governmental Authority imposing such tax or
any political subdivision or taxing authority thereof or therein (other than any
such connection arising solely from the Administrative Agent or such Lender
having executed, delivered or performed its obligations or received a payment
under, or enforced, this Agreement or any other Loan Document). If any such
non-excluded taxes, levies, imposts, duties, charges, fees, deductions or
withholdings ("Non-Excluded Taxes") or Other Taxes are required to be withheld
from any amounts payable to the Administrative Agent or any Lender hereunder,
the amounts so payable to the Administrative Agent or such Lender shall be
increased to the extent necessary to yield to the Administrative Agent or such
Lender (after payment of all Non-Excluded Taxes and Other Taxes) interest or any
such other amounts payable hereunder at the rates or in the amounts specified in
this Agreement, provided, however, that the Borrower shall not be required to
increase any such amounts payable to any Lender with respect to any Non-Excluded
Taxes (i) that are attributable to such Lender's failure to comply with the
requirements of paragraph (d) or (e) of this Section or (ii) that are United
States withholding taxes imposed on amounts payable to such Lender at the time
the Lender becomes a party to this Agreement (or designates a new lending
office), except to the extent that such Lender's assignor (if any) was entitled,
at the time of assignment, to receive additional amounts from the Borrower with
respect to such Non-Excluded Taxes pursuant to this paragraph.

          (b) In addition, the Borrower shall pay any Other Taxes to the
relevant Governmental Authority in accordance with applicable law.

          (c) Whenever any Non-Excluded Taxes or Other Taxes are payable by the
Borrower, as promptly as possible thereafter the Borrower shall send to the
Administrative Agent for its own account or for the account of the relevant
Lender, as the case may be, a certified copy of an original official receipt
received by the Borrower showing payment thereof. If the Borrower fails to pay
any Non-Excluded Taxes or Other Taxes when due to the appropriate taxing
authority or fails to remit to the

<PAGE>

                                                                              33

Administrative Agent the required receipts or other required documentary
evidence, the Borrower shall indemnify the Administrative Agent and the Lenders
for any incremental taxes, interest or penalties that may become payable by the
Administrative Agent or any Lender as a result of any such failure.

          (d) Each Lender (or Transferee) that is not a "U.S. Person" as defined
in Section 7701(a)(30) of the Code (a "Non-U.S. Lender") shall deliver to the
Borrower and the Administrative Agent (or, in the case of a Participant, to the
Lender from which the related participation shall have been purchased) two
copies of either U.S. Internal Revenue Service Form W-8BEN or Form W-8ECI, or,
in the case of a Non-U.S. Lender claiming exemption from U.S. federal
withholding tax under Section 871(h) or 881(c) of the Code with respect to
payments of "portfolio interest", a statement substantially in the form of
Exhibit H and a Form W-8BEN, or any subsequent versions thereof or successors
thereto, properly completed and duly executed by such Non-U.S. Lender claiming
complete exemption from, or a reduced rate of, U.S. federal withholding tax on
all payments by the Borrower under this Agreement and the other Loan Documents.
Such forms shall be delivered by each Non-U.S. Lender on or before the date it
becomes a party to this Agreement or designates a new lending office (or, in the
case of any Participant, on or before the date such Participant purchases the
related participation). In addition, each Non-U.S. Lender shall deliver such
forms promptly upon the obsolescence or invalidity of any form previously
delivered by such Non-U.S. Lender. Each Non-U.S. Lender shall promptly notify
the Borrower at any time it determines that it is no longer in a position to
provide any previously delivered certificate to the Borrower (or any other form
of certification adopted by the U.S. taxing authorities for such purpose).
Notwithstanding any other provision of this paragraph, a Non-U.S. Lender shall
not be required to deliver any form pursuant to this paragraph that such
Non-U.S. Lender is not legally able to deliver.

          (e) If the Administrative Agent or any Lender receives a refund in
respect of any amounts paid by the Borrower pursuant to this Section 2.17, which
refund in the sole judgment of such Administrative Agent or such Lender is
allocable to such payment, it shall pay the amount of such refund to the
Borrower, net of all out-of-pocket expenses of the Administrative Agent or such
Lender, provided however, that the Borrower, upon the request of such Lender or
the Administrative Agent, agrees to repay the amount paid over to the Borrower
to the Administrative Agent or such Lender in the event such Administrative
Agent or the Lender is required to repay such refund. Nothing contained herein
shall interfere with the right of the Administrative Agent or any Lender to
arrange its tax affairs in whatever manner it deems fit nor oblige the
Administrative Agent or any Lender to apply for any refund or to disclose any
information relating to its affairs or any computations in respect thereof.

          (f) The agreements in this Section shall survive the termination of
this Agreement and the payment of the Loans and all other amounts payable
hereunder.

          2.18  Indemnity. The Borrower agrees to indemnify each Lender and to
hold each Lender harmless from any loss or expense that such Lender sustains or
incurs as a consequence of (a) default by the Borrower in making a borrowing of,
conversion into or continuation of Eurodollar Loans after the Borrower has given
a notice requesting the same in accordance with the provisions of this
Agreement, (b) default by the Borrower in making any prepayment of or conversion
from Eurodollar Loans after the Borrower has given a notice thereof in
accordance with the provisions of this Agreement or (c) the making of a
prepayment of Eurodollar Loans on a day that is not the last day of an Interest
Period with respect thereto. Such indemnification may include an amount equal to
the excess, if any, of (i) the amount of interest that would have accrued on the
amount so prepaid, or not so borrowed, converted or continued, for the period
from the date of such prepayment or of such failure to borrow, convert or
continue to the last day of such Interest Period (or, in the case of a failure
to borrow, convert or continue, the Interest Period that would have commenced on
the date of such failure) in each case at the applicable rate of interest for
such Loans provided for herein (excluding, however, the Applicable Margin
included therein, if any) over (ii) the amount of interest (as reasonably
determined by such Lender) that would have accrued to such Lender on such amount
by placing such amount on deposit for a comparable

<PAGE>

                                                                              34

period with leading banks in the interbank eurodollar market. A certificate as
to any amounts payable pursuant to this Section submitted to the Borrower by any
Lender shall be conclusive in the absence of manifest error. This covenant shall
survive the termination of this Agreement and the payment of the Loans and all
other amounts payable hereunder.

          2.19  Change of Lending Office. Each Lender agrees that, upon the
occurrence of any event giving rise to the operation of Section 2.16 or 2.17(a)
with respect to such Lender, it will, if requested by the Borrower, use
reasonable efforts (subject to overall policy considerations of such Lender) to
designate another lending office for any Loans affected by such event with the
object of avoiding the consequences of such event; provided, that such
designation is made on terms that, in the sole judgment of such Lender, cause
such Lender and its lending office(s) to suffer no economic, legal or regulatory
disadvantage, and provided, further, that nothing in this Section shall affect
or postpone any of the obligations of the Borrower or the rights of any Lender
pursuant to Section 2.16 or 2.17(a).

          2.20  Replacement of Lenders. The Borrower shall be permitted to
replace any Lender that (a) requests reimbursement for amounts owing pursuant to
Section 2.16 or 2.17(a) or (b) defaults in its obligation to make Loans
hereunder, with a replacement financial institution; provided that (i) such
replacement does not conflict with any Requirement of Law, (ii) no Event of
Default shall have occurred and be continuing at the time of such replacement,
(iii) prior to any such replacement, such Lender shall have taken no action
under Section 2.19 so as to eliminate the continued need for payment of amounts
owing pursuant to Section 2.16 or 2.17(a), (iv) the replacement financial
institution shall purchase, at par, all Loans and other amounts owing to such
replaced Lender on or prior to the date of replacement, (v) the Borrower shall
be liable to such replaced Lender under Section 2.18 if any Eurodollar Loan
owing to such replaced Lender shall be purchased other than on the last day of
the Interest Period relating thereto, (vi) the replacement financial
institution, if not already a Lender, shall be reasonably satisfactory to the
Administrative Agent, (vii) the replaced Lender shall be obligated to make such
replacement in accordance with the provisions of Section 10.6 (provided that the
Borrower shall be obligated to pay the registration and processing fee referred
to therein), (viii) until such time as such replacement shall be consummated,
the Borrower shall pay all additional amounts (if any) required pursuant to
Section 2.16 or 2.17(a), as the case may be, and (ix) any such replacement shall
not be deemed to be a waiver of any rights that the Borrower, the Administrative
Agent or any other Lender shall have against the replaced Lender.

                          SECTION 3. LETTERS OF CREDIT

          3.1   L/C Commitment. (a) Subject to the terms and conditions hereof,
each Issuing Lender, in reliance on the agreements of the other Revolving
Lenders set forth in Section 3.4(a), agrees to issue letters of credit ("Letters
of Credit") for the account of the Borrower on any Business Day during the
Revolving Commitment Period in such form as may be approved from time to time by
such Issuing Lender; provided that no Issuing Lender shall have an obligation to
issue any Letter of Credit if, after giving effect to such issuance, (i) the L/C
Obligations would exceed the L/C Commitment or (ii) the aggregate amount of the
Available Revolving Commitments would be less than zero. Each Letter of Credit
shall (i) be denominated in Dollars, (ii) have a face amount of at least
$100,000 (unless otherwise agreed by the relevant Issuing Lender) and (iii)
expire no later than the earlier of (x) the first anniversary of its date of
issuance and (y) the date that is five Business Days prior to the Revolving
Termination Date, provided that any Letter of Credit with a one-year term may
provide for the renewal thereof for additional one-year periods (which shall in
no event extend beyond the date referred to in clause (y) above).

          (b) No Issuing Lender shall at any time be obligated to issue any
Letter of Credit hereunder if such issuance would conflict with, or cause such
Issuing Lender or any L/C Participant to exceed any limits imposed by, any
applicable Requirement of Law.

<PAGE>

                                                                              35

          3.2   Procedure for Issuance of Letter of Credit. The Borrower may
from time to time request that any Issuing Lender issue a Letter of Credit by
delivering to such Issuing Lender at its address for notices specified herein an
Application therefor, completed to the satisfaction of such Issuing Lender, and
such other certificates, documents and other papers and information as such
Issuing Lender may request. Upon receipt of any Application, the relevant
Issuing Lender will process such Application and the certificates, documents and
other papers and information delivered to it in connection therewith in
accordance with its customary procedures and shall promptly issue the Letter of
Credit requested thereby (but in no event shall such Issuing Lender be required
to issue any Letter of Credit earlier than three Business Days after its receipt
of the Application therefor and all such other certificates, documents and other
papers and information relating thereto) by issuing the original of such Letter
of Credit to the beneficiary thereof or as otherwise may be agreed to by such
Issuing Lender and the Borrower. The relevant Issuing Lender shall furnish a
copy of such Letter of Credit to the Borrower promptly following the issuance
thereof. The relevant Issuing Lender shall promptly furnish to the
Administrative Agent, which shall in turn promptly furnish to the Lenders,
notice of the issuance of each Letter of Credit (including the amount thereof).

          3.3   Fees and Other Charges. (a) The Borrower will pay a fee on all
outstanding Letters of Credit at a per annum rate equal to the Applicable Margin
then in effect with respect to Eurodollar Loans under the Revolving Facility,
shared ratably among the Revolving Lenders and payable quarterly in arrears on
each L/C Fee Payment Date after the issuance date. In addition, the Borrower
shall pay to the relevant Issuing Lender for its own account a fronting fee of
0.25% per annum on the face amount of each Letter of Credit, payable quarterly
in arrears on each L/C Fee Payment Date after the Issuance Date.

          (b) In addition to the foregoing fees, the Borrower shall pay or
reimburse the relevant Issuing Lender for such normal and customary costs and
expenses as are incurred or charged by such Issuing Lender in issuing,
negotiating, effecting payment under, amending or otherwise administering any
Letter of Credit.

          3.4   L/C Participations. (a) Each Issuing Lender irrevocably agrees
to grant and hereby grants to each L/C Participant, and, to induce the Issuing
Lenders to issue Letters of Credit hereunder, each L/C Participant irrevocably
agrees to accept and purchase and hereby accepts and purchases from each Issuing
Lender, on the terms and conditions set forth below, for such L/C Participant's
own account and risk an undivided interest equal to such L/C Participant's
Revolving Percentage in each Issuing Lender's obligations and rights under and
in respect of each Letter of Credit issued by it hereunder and the amount of
each draft paid by such Issuing Lender thereunder. Each L/C Participant
unconditionally and irrevocably agrees with each Issuing Lender that, if a draft
is paid under any Letter of Credit for which such Issuing Lender is not
reimbursed in full by the Borrower in accordance with the terms of this
Agreement, such L/C Participant shall pay to such Issuing Lender upon demand at
such Issuing Lender's address for notices specified herein an amount equal to
such L/C Participant's Revolving Percentage of the amount of such draft, or any
part thereof, that is not so reimbursed.

          (b) If any amount required to be paid by any L/C Participant to any
Issuing Lender pursuant to Section 3.4(a) in respect of any unreimbursed portion
of any payment made by such Issuing Lender under any Letter of Credit is paid to
such Issuing Lender within three Business Days after the date such payment is
due, such L/C Participant shall pay to such Issuing Lender on demand an amount
equal to the product of (i) such amount, times (ii) the daily average Federal
Funds Effective Rate during the period from and including the date such payment
is required to the date on which such payment is immediately available to such
Issuing Lender, times (iii) a fraction the numerator of which is the number of
days that elapse during such period and the denominator of which is 360. If any
such amount required to be paid by any L/C Participant pursuant to Section
3.4(a) is not made available to the relevant Issuing

<PAGE>

                                                                              36

Lender by such L/C Participant within three Business Days after the date such
payment is due, such Issuing Lender shall be entitled to recover from such L/C
Participant, on demand, such amount with interest thereon calculated from such
due date at the rate per annum applicable to ABR Loans under the Revolving
Facility. A certificate of the relevant Issuing Lender submitted to any L/C
Participant with respect to any amounts owing under this Section shall be
conclusive in the absence of manifest error.

          (c) Whenever, at any time after the relevant Issuing Lender has made
payment under any Letter of Credit and has received from any L/C Participant its
pro rata share of such payment in accordance with Section 3.4(a), such Issuing
Lender receives any payment related to such Letter of Credit (whether directly
from the Borrower or otherwise, including proceeds of collateral applied thereto
by such Issuing Lender), or any payment of interest on account thereof, such
Issuing Lender will distribute to such L/C Participant its pro rata share
thereof; provided, however, that in the event that any such payment received by
such Issuing Lender shall be required to be returned by such Issuing Lender,
such L/C Participant shall return to such Issuing Lender the portion thereof
previously distributed by such Issuing Lender to it.

          3.5   Reimbursement Obligation of the Borrower. The Borrower agrees to
reimburse the relevant Issuing Lender on each date next succeeding the date on
which such Issuing Lender notifies the Borrower of the date and amount of a
draft presented under any Letter of Credit and paid by such Issuing Lender for
the amount of (a) such draft so paid and (b) any taxes, fees, charges or other
costs or expenses incurred by such Issuing Lender in connection with such
payment. Each such payment shall be made to the relevant Issuing Lender at its
address for notices specified herein in lawful money of the United States and in
immediately available funds. Interest shall be payable on any and all amounts
remaining unpaid by the Borrower under this Section from the date on which the
relevant draft is paid or the relevant costs or expenses are incurred, as the
case may be, until payment in full at the rate set forth in (i) until the second
Business Day following such date, Section 2.12(b) and (ii) thereafter, Section
2.12(c).

          3.6   Obligations Absolute. The Borrower's obligations under this
Section 3 shall be absolute and unconditional under any and all circumstances
and irrespective of any setoff, counterclaim or defense to payment that the
Borrower may have or have had against any Issuing Lender, any beneficiary of a
Letter of Credit or any other Person. The Borrower also agrees with each Issuing
Lender that no Issuing Lender shall be responsible for, and the Borrower's
Reimbursement Obligations under Section 3.5 shall not be affected by, among
other things, the validity or genuineness of documents or of any endorsements
thereon, even though such documents shall in fact prove to be invalid,
fraudulent or forged, or any dispute between or among the Borrower and any
beneficiary of any Letter of Credit or any other party to which such Letter of
Credit may be transferred or any claims whatsoever of the Borrower against any
beneficiary of such Letter of Credit or any such transferee. No Issuing Lender
shall be liable for any error, omission, interruption or delay in transmission,
dispatch or delivery of any message or advice, however transmitted, in
connection with any Letter of Credit, except for errors or omissions found by a
final and nonappealable decision of a court of competent jurisdiction to have
resulted from the gross negligence or willful misconduct of the relevant Issuing
Lender. The Borrower agrees that any action taken or omitted by any Issuing
Lender under or in connection with any Letter of Credit or the related drafts or
documents, if done in the absence of gross negligence or willful misconduct and
in accordance with the standards of care specified in the Uniform Commercial
Code of the State of New York, shall be binding on the Borrower and shall not
result in any liability of any Issuing Lender to the Borrower.

          3.7   Letter of Credit Payments. If any draft shall be presented for
payment under any Letter of Credit, the relevant Issuing Lender shall promptly
notify the Borrower of the date and amount thereof. The responsibility of each
Issuing Lender to the Borrower in connection with any draft presented for
payment under any Letter of Credit shall, in addition to any payment obligation
expressly provided for in such Letter of Credit, be limited to determining that
the documents (including each draft) delivered

<PAGE>

                                                                              37

under such Letter of Credit in connection with such presentment are
substantially in conformity with such Letter of Credit.

          3.8   Applications. To the extent that any provision of any
Application related to any Letter of Credit is inconsistent with the provisions
of this Section 3, the provisions of this Section 3 shall apply.

                    SECTION 4. REPRESENTATIONS AND WARRANTIES

          To induce the Administrative Agent and the Lenders to enter into this
Agreement and to make the Loans and issue or participate in the Letters of
Credit, Holdings and CC Operating hereby jointly and severally represent and
warrant to the Administrative Agent and each Lender that:

          4.1   Financial Condition. (a) Each of (i) the unaudited pro forma
consolidated balance sheet of CC Operating and its Subsidiaries as at June 30,
2003 (including the notes thereto) and (ii) the unaudited pro forma consolidated
balance sheet of the Loan Parties and the Crown Castle UK Group (as a group) as
at June 30, 2003 (including the notes thereto) (the "Pro Forma Balance Sheets"),
copies of which have heretofore been furnished to each Lender, has been prepared
giving effect (as if such events had occurred on such date) to (i) the Loans to
be made on the Restatement Effective Date and the use of proceeds thereof, (ii)
the UK Roll-Up and (iii) the payment of fees and expenses in connection with the
foregoing. Each of the Pro Forma Balance Sheets has been prepared based on the
best information available to CC Operating as of the date of delivery thereof,
and presents fairly on a pro forma basis the estimated financial position of (i)
CC Operating and its Subsidiaries or (ii) the Loan Parties and the Crown Castle
UK Group (as a group), as applicable, in each case as at June 30, 2003, assuming
that the events specified in the preceding sentence had actually occurred at
such date.

          (b) The audited consolidated financial statements of Holdings and its
Subsidiaries (including, for purposes of this Section 4.1(b), the Unrestricted
Subsidiaries) as at December 31, 2002, and the related consolidated statements
of income and of cash flows for the fiscal year ended on such date, reported on
by and accompanied by an unqualified report from KPMG, LLP, present fairly the
consolidated financial condition of Holdings and its Subsidiaries as at such
date, and the consolidated results of its operations and its consolidated cash
flows for the fiscal year then ended. The unaudited consolidated financial
statements of Holdings and its Subsidiaries as at June 30, 2003, and the related
unaudited consolidated statements of income and cash flows for the six-month
period ended on such date, present fairly the consolidated financial condition
of Holdings and its Subsidiaries as at such date, and the consolidated results
of its operations and its consolidated cash flows for the six-month period then
ended (subject to normal year-end audit adjustments). All such financial
statements, including the related schedules and notes thereto, have been
prepared in accordance with GAAP applied consistently throughout the periods
involved (except as approved by the aforementioned firm of accountants and
disclosed therein). Holdings and its Subsidiaries do not have any material
Guarantee Obligations, contingent liabilities and liabilities for taxes, or any
long-term leases or unusual forward or long-term commitments, including any
interest rate or foreign currency swap or exchange transaction or other
obligation in respect of derivatives, that are not reflected in the most recent
financial statements referred to in this paragraph. During the period from
December 31, 2002 to and including the Restatement Effective Date there has been
no Disposition by Holdings or any of its Subsidiaries of any material part of
its business or property.

          (c) The audited consolidated financial statements of the Loan Parties
and the Crown Castle UK Group (as a group) as at December 31, 2002, and the
related consolidated statements of income and of cash flows for the fiscal year
ended on such date, reported on by and accompanied by an unqualified report from
KPMG, LLP, present fairly the consolidated financial condition of the Loan

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                                                                              38

Parties and the Crown Castle UK Group (as a group) as at such date, and the
consolidated results of its operations and its consolidated cash flows for the
fiscal year then ended. The unaudited consolidated financial statements of the
Loan Parties and the Crown Castle UK Group (as a group) as at June 30, 2003, and
the related unaudited consolidated statements of income and cash flows for the
six-month period ended on such date, present fairly the consolidated financial
condition of the Loan Parties and the Crown Castle UK Group (as a group) as at
such date, and the consolidated results of its operations and its consolidated
cash flows for the six-month period then ended (subject to normal year-end audit
adjustments). All such financial statements, including the related schedules and
notes thereto, have been prepared in accordance with GAAP applied consistently
throughout the periods involved (except as approved by the aforementioned firm
of accountants and disclosed therein). The Loan Parties and the Crown Castle UK
Group do not have any material Guarantee Obligations, contingent liabilities and
liabilities for taxes, or any long-term leases or unusual forward or long-term
commitments, including any interest rate or foreign currency swap or exchange
transaction or other obligation in respect of derivatives, that are not
reflected in the most recent financial statements referred to in this paragraph.
During the period from December 31, 2002 to and including the Restatement
Effective Date there has been no Disposition by any of the Loan Parties or any
member of the Crown Castle UK Group of any material part of its business or
property.

          4.2   No Change. Since December 31, 2002, there has been no
development or event that has had or could reasonably be expected to have a
Material Adverse Effect.

          4.3   Corporate Existence; Compliance with Law. Each of Holdings, CC
Operating and their respective Subsidiaries (a) is duly organized, validly
existing and in good standing under the laws of the jurisdiction of its
organization, (b) has the corporate power and authority, and the legal right, to
own and operate its property, to lease the property it operates as lessee and to
conduct the business in which it is currently engaged, (c) is duly qualified as
a foreign corporation and in good standing under the laws of each jurisdiction
where its ownership, lease or operation of property or the conduct of its
business requires such qualification except to the extent that the failure to be
so qualified and in good standing could not, in the aggregate, reasonably be
expected to have a Material Adverse Effect and (d) is in compliance with all
Requirements of Law except to the extent that the failure to comply therewith
could not, in the aggregate, reasonably be expected to have a Material Adverse
Effect.

          4.4   Corporate Power; Authorization; Enforceable Obligations. Each
Loan Party has the corporate power and authority, and the legal right, to make,
deliver and perform the Loan Documents to which it is a party and, in the case
of the Borrower, to obtain extensions of credit hereunder. Each Loan Party has
taken all necessary corporate action to authorize the execution, delivery and
performance of the Loan Documents to which it is a party and, in the case of the
Borrower, to authorize the extensions of credit on the terms and conditions of
this Agreement. No material consent or authorization of, filing with, notice to
or other act by or in respect of, any Governmental Authority or any other Person
is required in connection with the extensions of credit hereunder or with the
execution, delivery, performance, validity or enforceability of this Agreement
or any of the Loan Documents, except (i) consents, authorizations, filings and
notices described in Schedule 4.4, which consents, authorizations, filings and
notices have been obtained or made and are in full force and effect and (ii) the
filings referred to in Section 4.19. Each Loan Document has been duly executed
and delivered on behalf of each Loan Party party thereto. This Agreement
constitutes, and each other Loan Document upon execution will constitute, a
legal, valid and binding obligation of each Loan Party party thereto,
enforceable against each such Loan Party in accordance with its terms, except as
enforceability may be limited by applicable bankruptcy, insolvency,
reorganization, moratorium or similar laws affecting the enforcement of
creditors' rights generally and by general equitable principles (whether
enforcement is sought by proceedings in equity or at law).

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                                                                              39

          4.5   No Legal Bar. The execution, delivery and performance of this
Agreement and the other Loan Documents, the issuance of Letters of Credit, the
borrowings hereunder and the use of the proceeds thereof will not violate any
Requirement of Law or any Contractual Obligation of Holdings, CC Operating or
any of their respective Subsidiaries and will not result in, or require, the
creation or imposition of any Lien on any of their respective properties or
revenues pursuant to any Requirement of Law or any such Contractual Obligation
(other than the Liens created by the Guarantee and Collateral Agreement).

          4.6   Litigation. No litigation, investigation or proceeding of or
before any arbitrator or Governmental Authority is pending or, to the knowledge
of Holdings or CC Operating, threatened by or against Holdings, CC Operating or
any of their respective Subsidiaries or against any of their respective
properties or revenues (a) with respect to any of the Loan Documents or any of
the transactions contemplated hereby or thereby, or (b) that could reasonably be
expected to have a Material Adverse Effect.

          4.7   No Default. Neither Holdings, CC Operating nor any of their
respective Subsidiaries is in default under or with respect to any of its
Contractual Obligations in any respect that could reasonably be expected to have
a Material Adverse Effect. No Default or Event of Default has occurred and is
continuing.

          4.8   Ownership of Property; Liens. Each of Holdings, CC Operating and
their respective Subsidiaries has title in fee simple to, or a valid leasehold
interest in, all its real property, and good title to, or a valid leasehold
interest in, all its other property, and none of such property is subject to any
Lien except as permitted by Section 7.3 and except for any immaterial defects in
title.

          4.9   Intellectual Property. Holdings, CC Operating and each of their
respective Subsidiaries owns, or is licensed to use, all Intellectual Property
necessary for the conduct of its business as currently conducted. No material
claim has been asserted and is pending by any Person challenging or questioning
the use of any Intellectual Property or the validity or effectiveness of any
Intellectual Property, nor does Holdings or CC Operating know of any valid basis
for any such claim. The use of Intellectual Property by Holdings, CC Operating
and their respective Subsidiaries does not infringe on the rights of any Person
in any material respect.

          4.10  Taxes. Each of Holdings, CC Operating and each of their
respective Subsidiaries has filed or caused to be filed all Federal, state and
other material tax returns that are required to be filed and has paid all taxes
shown to be due and payable on said returns or on any assessments made against
it or any of its property and all other taxes, fees or other charges imposed on
it or any of its property by any Governmental Authority (other than any the
amount or validity of which are currently being contested in good faith by
appropriate proceedings and with respect to which reserves in conformity with
GAAP have been provided on the books of Holdings, CC Operating or their
respective Subsidiaries, as the case may be); no tax Lien has been filed, and,
to the knowledge of Holdings and CC Operating, no claim is being asserted, with
respect to any such tax, fee or other charge.

          4.11  Federal Regulations. No part of the proceeds of any Loans, and
no other extensions of credit hereunder, will be used for "buying" or "carrying"
any "margin stock" within the respective meanings of each of the quoted terms
under Regulation U as now and from time to time hereafter in effect or for any
purpose that violates the provisions of the Regulations of the Board. If
requested by any Lender or the Administrative Agent, the Borrower will furnish
to the Administrative Agent and each Lender a statement to the foregoing effect
in conformity with the requirements of FR Form G-3 or FR Form U-1, as
applicable, referred to in Regulation U.

<PAGE>

                                                                              40

          4.12  Labor Matters. Except as, in the aggregate, could not
reasonably be expected to have a Material Adverse Effect: (a) there are no
strikes or other labor disputes against Holdings, CC Operating or any of their
respective Subsidiaries pending or, to the knowledge of Holdings or CC
Operating, threatened; (b) hours worked by and payment made to employees of
Holdings, CC Operating and their respective Subsidiaries have not been in
violation of the Fair Labor Standards Act or any other applicable Requirement of
Law dealing with such matters; and (c) all payments due from Holdings, CC
Operating or any of their respective Subsidiaries on account of employee health
and welfare insurance have been paid or accrued as a liability on the books of
Holdings, CC Operating or the relevant Subsidiary.

          4.13  ERISA. Neither a Reportable Event nor an "accumulated funding
deficiency" (within the meaning of Section 412 of the Code or Section 302 of
ERISA) has occurred during the five-year period prior to the date on which this
representation is made or deemed made with respect to any Plan, and each Plan
has complied in all material respects with the applicable provisions of ERISA
and the Code. No termination of a Single Employer Plan (other than a standard
termination pursuant to Section 4041(b) of ERISA) has occurred, and no Lien in
favor of the PBGC or a Plan has arisen, during such five-year period. The
present value of all accrued benefits under each Single Employer Plan (based on
those assumptions used to fund such Plans) did not, as of the last annual
valuation date prior to the date on which this representation is made or deemed
made, exceed the value of the assets of such Plan allocable to such accrued
benefits by an amount that could reasonably be expected to have a Material
Adverse Effect. Neither CC Operating nor any Commonly Controlled Entity has had
a complete or partial withdrawal from any Multiemployer Plan that has resulted
or could reasonably be expected to result in a material liability under ERISA,
and neither CC Operating nor any Commonly Controlled Entity would become subject
to any material liability under ERISA if CC Operating or any such Commonly
Controlled Entity were to withdraw completely from all Multiemployer Plans as of
the valuation date most closely preceding the date on which this representation
is made or deemed made. No such Multiemployer Plan is in Reorganization or
Insolvent.

          4.14  Investment Company Act; Other Regulations. No Loan Party is an
"investment company", or a company "controlled" by an "investment company",
within the meaning of the Investment Company Act of 1940, as amended. No Loan
Party is subject to regulation under any Requirement of Law (other than
Regulation X of the Board) that limits its ability to incur Indebtedness.

          4.15  Subsidiaries. Except as disclosed to the Administrative Agent
by CC Operating in writing from time to time after the Restatement Effective
Date, (a) Schedule 4.15 sets forth the name and jurisdiction of incorporation of
each Subsidiary and, as to each such Subsidiary, the percentage of each class of
Capital Stock owned by any Loan Party and (b) there are no outstanding
subscriptions, options, warrants, calls, rights or other agreements or
commitments (other than stock options granted to employees or directors and
directors' qualifying shares) of any nature relating to any Capital Stock of CC
Operating or any Subsidiary, except (i) as created by the Loan Documents, (ii)
for the call right described in Section 7.5(e) and (iii) as created by
agreements governing Investments made pursuant to Section 7.7(i), (j) or (m)
(and which apply only to Capital Stock of the Subsidiary in which the relevant
Investment is made).

          4.16  Use of Proceeds. The proceeds of the Loans and the Letters of
Credit shall be used for general corporate purposes, including the funding of
the redemption described in Section 5.1(d) (which proceeds in the amount of
approximately $240,000,000 shall be held in reserve pending such redemption) and
the dividend described in Section 7.6(e).

          4.17  Environmental Matters. Except as, in the aggregate, could not
reasonably be expected to have a Material Adverse Effect:

<PAGE>

                                                                              41

          (a) the facilities and properties owned, leased or operated by
   Holdings, CC Operating or any of their respective Subsidiaries (the
   "Properties") do not contain any Materials of Environmental Concern in
   amounts or concentrations that constitute a violation of, or could reasonably
   be expected to result in liability of Holdings, CC Operating or any of their
   respective Subsidiaries under applicable Environmental Law;

          (b) neither Holdings, CC Operating nor any of their respective
   Subsidiaries has received written notice of any actual or alleged violation,
   liability or potential liability regarding compliance with Environmental Laws
   with regard to any of the Properties or the business operated by Holdings, CC
   Operating or any of their respective Subsidiaries (the "Business"), nor does
   Holdings or CC Operating have knowledge or reason to believe that any such
   notice will be received or is being threatened;

          (c) neither Holdings, CC Operating nor any of their respective
   Subsidiaries has transported or disposed of Materials of Environmental
   Concern from the Properties in violation of, or in a manner or to a location
   that could reasonably be expected to result in liability of Holdings, CC
   Operating or any of their respective Subsidiaries under, applicable
   Environmental Law;

          (d) no judicial proceeding or governmental or administrative action is
   pending or, to the knowledge of Holdings and CC Operating, threatened, under
   applicable Environmental Law against Holdings, CC Operating or any of their
   respective Subsidiaries with respect to the Properties or the Business, nor
   are there any consent decrees or other decrees, consent orders,
   administrative orders or other orders outstanding under applicable
   Environmental Law with respect to the Properties or the Business; and

          (e) the Properties and all operations at the Properties are in
   compliance with all applicable Environmental Laws.

          4.18  Accuracy of Information, etc. No statement or information
contained in this Agreement, any other Loan Document, the Confidential
Information Memorandum or any other document, certificate or statement furnished
by or on behalf of any Loan Party to the Administrative Agent or the Lenders, or
any of them, for use in connection with the transactions contemplated by this
Agreement or the other Loan Documents, contained as of the date such statement,
information, document or certificate was so furnished (or, in the case of the
Confidential Information Memorandum, as of the Restatement Effective Date), any
untrue statement of a material fact or omitted to state a material fact
necessary to make the statements contained herein or therein not misleading. The
projections and pro forma financial information contained in the materials
referenced above are based upon good faith estimates and assumptions believed by
management of CC Operating to be reasonable at the time made, it being
recognized by the Lenders that such financial information as it relates to
future events is not to be viewed as fact and that actual results during the
period or periods covered by such financial information may differ from the
projected results set forth therein by a material amount.

          4.19  Security Interests. The Guarantee and Collateral Agreement is
effective to create in favor of the Administrative Agent, for the benefit of the
Lenders, a legal, valid and enforceable security interest in the Collateral
described therein and proceeds thereof. In the case of the Pledged Stock
described in the Guarantee and Collateral Agreement, when stock certificates
representing such Pledged Stock are delivered to the Administrative Agent, and
in the case of the other Collateral described in the Guarantee and Collateral
Agreement, when financing statements and other filings specified on Schedule
4.19 in appropriate form are filed in the offices specified on Schedule 4.19,
the Guarantee and Collateral Agreement shall constitute a fully perfected Lien
on, and security interest in, all right, title and interest of the Loan Parties
in such Collateral and the proceeds thereof for which the filing of a Uniform
Commercial Code financing statement is specified as the manner of perfection, as
security for the Obligations (as

<PAGE>

                                                                              42

defined in the Guarantee and Collateral Agreement), in each case prior and
superior in right to any other Person (except, in the case of Collateral other
than Pledged Stock, Liens permitted by Section 7.3).

          4.20  Solvency. Each Loan Party is, and after giving effect to the
incurrence of all Indebtedness and obligations being incurred in connection
herewith will be and will continue to be, Solvent.

                         SECTION 5. CONDITIONS PRECEDENT

          5.1   Conditions to Restatement Effective Date. The effectiveness of
this Agreement and the agreement of each Incremental Tranche B Term Lender to
make its Incremental Tranche B Term Loan is subject to the satisfaction of the
following conditions precedent:

          (a) Credit Agreement; Guarantee and Collateral Agreement;
   Reaffirmation. The Administrative Agent shall have received (i) this
   Agreement, executed and delivered by the Administrative Agent, Holdings and
   the Borrower, (ii) from the "Required Lenders" and the "Majority Facility
   Lenders" (as each such term is defined in the Existing Credit Agreement) and
   each Tranche B Term Lender, an Addendum in the form of Exhibit D, signed on
   behalf of such Lenders, (ii) the Guarantee and Collateral Agreement, executed
   and delivered by each party thereto, and (iii) a Reaffirmation with respect
   to the Australian Credit Support Documents, executed and delivered by each
   party to such documents.

          (b) UK Roll-Up. CC Operating shall have acquired 100% of the Capital
   Stock of Crown Castle UK (the "UK Roll-Up").

          (c) UK Credit Agreement. The Administrative Agent shall have received
   a satisfactory "pay-off" letter from Credit Suisse First Boston, as agent
   under the Credit Agreement, dated June 18, 1999, with Crown Castle UK
   Limited, as borrower, stating, among other things, that upon the payment in
   full of all amounts owing under such credit agreement, such credit agreement
   shall terminate and all liens and other security interests granted thereunder
   shall terminate and be of no further force or effect and (b) the
   Administrative Agent shall have received a copy of a funds flow memorandum
   evidencing the payment in full to Credit Suisse First Boston, as agent under
   such credit agreement, of all amounts owing thereunder.

          (d) UK Bonds. Concurrently with the effectiveness of this Agreement
   and the borrowing of the Incremental Tranche B Term Loans, Crown Castle UK
   shall have delivered a redemption notice in respect of its 9% Guaranteed
   Bonds due 2007, providing for a mandatory redemption thereof no later than 35
   days after the Restatement Effective Date.

          (e) Pro Forma Balance Sheets; Financial Statements; Projections. The
   Lenders shall have received (i) the Pro Forma Balance Sheets and the other
   financial statements referred to in Section 4.1 and (ii) satisfactory
   Projections through the 2010 fiscal year of CC Operating.

          (f) Approvals. All material governmental and third party approvals
   necessary in connection with the transactions contemplated hereby shall have
   been obtained and be in full force and effect.

          (g) Lien Searches. The Administrative Agent shall have received the
   results of a recent Uniform Commercial Code lien search from the Secretary of
   State of the jurisdiction of organization of each Loan Party and from the
   relevant United Kingdom registries with respect to each member of the Crown
   Castle UK Group, and such search shall reveal no liens on any of their
   respective assets

<PAGE>

                                                                              43

   except for liens permitted by Section 7.3 or discharged on or prior to the
   Restatement Effective Date pursuant to documentation satisfactory to the
   Administrative Agent.

          (h) Fees. The Lenders shall have received all fees required to be
   paid, and all expenses for which invoices have been presented (including the
   reasonable fees and expenses of legal counsel), on or before the Restatement
   Effective Date. All such amounts will be paid with proceeds of Incremental
   Tranche B Term Loans made on the Restatement Effective Date and will be
   reflected in the funding instructions given by the Borrower to the
   Administrative Agent on or before the Restatement Effective Date.

          (i) Closing Certificate. The Administrative Agent shall have received
   a certificate of each of the Borrower and each other Loan Party, dated the
   Restatement Effective Date, substantially in the form of Exhibit C-1 or C-2,
   respectively, with appropriate insertions and attachments.

          (j) Legal Opinions. The Administrative Agent shall have received the
   executed legal opinion of (i) Cravath, Swaine & Moore LLP, counsel to
   Holdings, CC Operating and its Subsidiaries, substantially in the form of
   Exhibit F, (ii) Lasa, Monroig & Veve, counsel to CC Puerto Rico, in form and
   substance reasonably satisfactory to the Administrative Agent, and (iii)
   Norton Rose, counsel to Crown Castle UK, with respect to matters relating to
   the UK Roll-Up in form and substance reasonably satisfactory to the
   Administrative Agent.

          (k) Crown Castle UK Stock. The Administrative Agent shall have
   received (i) certificates representing 66% of the outstanding Capital Stock
   of Crown Castle UK, together with an undated stock power in respect thereof
   executed in blank by a duly authorized officer of the pledgor thereof, and
   (ii) an executed Acknowledgement and Consent from Crown Castle UK in the form
   attached to the Guarantee and Collateral Agreement.

          (l) Prepayment of Tranche A Term Loans. Concurrently with the
   effectiveness of this Agreement and the borrowing of the Incremental Tranche
   B Term Loans, the Borrower shall have prepaid $100,000,000 of Tranche A Term
   Loans pursuant to Section 2.8.

          5.2   Conditions to Each Extension of Credit. The agreement of each
Lender to make any extension of credit requested to be made by it on any date
(including its initial extension of credit) is subject to the satisfaction of
the following conditions precedent:

          (a) Representations and Warranties. Each of the representations and
   warranties made by any Loan Party in or pursuant to the Loan Documents shall
   be true and correct in all material respects on and as of such date as if
   made on and as of such date.

          (b) No Default. No Default or Event of Default shall have occurred and
   be continuing on such date or after giving effect to the extensions of credit
   requested to be made on such date.

          Each borrowing by and issuance of a Letter of Credit on behalf of the
Borrower hereunder shall constitute a representation and warranty by the
Borrower as of the date of such extension of credit that the conditions
contained in this Section 5.2 have been satisfied.

                        SECTION 6. AFFIRMATIVE COVENANTS

          Holdings and CC Operating hereby jointly and severally agree that, so
long as the Commitments remain in effect, any Letter of Credit remains
outstanding or any Loan or other amount is owing to any Lender or the
Administrative Agent hereunder, each of Holdings and CC Operating shall, and
shall cause each of their respective Subsidiaries to:

<PAGE>

                                                                              44

          6.1   Financial Statements. Furnish to the Administrative Agent:

          (a) as soon as available, but in any event within 95 days after the
   end of each fiscal year of Holdings, a copy of the audited consolidated
   balance sheet of Holdings and its consolidated Subsidiaries (including, for
   the purposes of this Section 6.1(a), the Unrestricted Subsidiaries) as at the
   end of such year and the related audited consolidated statements of income
   and of cash flows for such year, setting forth in each case in comparative
   form the figures for the previous year, reported on without a "going concern"
   or like qualification or exception, or qualification arising out of the scope
   of the audit, by KPMG, LLP or other independent certified public accountants
   of nationally recognized standing;

          (b) as soon as available, but in any event within 95 days after the
   end of each fiscal year of CC Operating, a copy of the audited consolidated
   balance sheet of CC Operating and its consolidated Subsidiaries as at the end
   of such year and the related audited consolidated statements of income and of
   cash flows for such year, setting forth in each case in comparative form the
   figures for the previous year, reported on without a "going concern" or like
   qualification or exception, or qualification arising out of the scope of the
   audit, by KPMG, LLP or other independent certified public accountants of
   nationally recognized standing;

          (c) as soon as available, but in any event not later than 50 days
   after the end of each of the first three quarterly periods of each fiscal
   year of Holdings, the unaudited consolidated balance sheet of Holdings and
   its consolidated Subsidiaries (including, for the purposes of this Section
   6.1(c), the Unrestricted Subsidiaries) as at the end of such quarter and the
   related unaudited consolidated statements of income and of cash flows for
   such quarter and the portion of the fiscal year through the end of such
   quarter, setting forth in each case in comparative form the figures for the
   previous year, certified by a Responsible Officer as being fairly stated in
   all material respects (subject to normal year-end audit adjustments);

          (d) as soon as available, but in any event not later than 50 days
   after the end of each of the first three quarterly periods of each fiscal
   year of CC Operating, the unaudited consolidated balance sheet of CC
   Operating and its consolidated Subsidiaries as at the end of such quarter and
   the related unaudited consolidated statements of income and of cash flows for
   such quarter and the portion of the fiscal year through the end of such
   quarter, setting forth in each case in comparative form the figures for the
   previous year, certified by a Responsible Officer as being fairly stated in
   all material respects (subject to normal year-end audit adjustments).

          All such financial statements, together with the notes thereto, shall
fairly present in all material respects the financial condition of the relevant
entities and shall be prepared in accordance with GAAP applied consistently
throughout the periods reflected therein and with prior periods (except as
approved by such accountants or officer, as the case may be, and disclosed
therein).

          Any financial statement required to be delivered pursuant to this
Section 6.1 shall be deemed to have been delivered on the date on which CC
Operating posts such financial statement on its website on the Internet at
www.crowncomm.net or when such financial statement is posted on the SEC's
website on the Internet at www.sec.gov; provided that CC Operating shall give
notice of any such posting to the Administrative Agent (who shall then give
notice of any such posting to the Lenders); provided, further, that CC Operating
shall deliver paper copies of any financial statement referred to in this
Section 6.1 to the Administrative Agent if the Administrative Agent or any
Lender requests CC Operating to deliver such paper copies until written notice
to cease delivering such paper copies is given by the Administrative Agent.

          6.2   Certificates; Other Information. Furnish to the Administrative
Agent:

<PAGE>

                                                                              45

          (a) concurrently with the delivery of the financial statements
   referred to in Section 6.1(a), a certificate of the independent certified
   public accountants reporting on such financial statements stating that in
   making the examination necessary therefor no knowledge was obtained of any
   Default or Event of Default pursuant to Section 7.1 or 8(a), except as
   specified in such certificate;

          (b) concurrently with the delivery of any financial statements
   pursuant to Section 6.1, (i) a certificate of a Responsible Officer stating
   that, to the best of each such Responsible Officer's knowledge, each Loan
   Party during such period has observed or performed in all material respects
   all of its covenants and other agreements, and satisfied every condition,
   contained in this Agreement and the other Loan Documents to which it is a
   party to be observed, performed or satisfied by it, and that such Responsible
   Officer has obtained no knowledge of any Default or Event of Default except
   as specified in such certificate and (ii) in the case of quarterly or annual
   financial statements, (x) a Compliance Certificate containing all information
   and calculations necessary for determining compliance by Holdings, CC
   Operating and their respective Subsidiaries with the provisions of this
   Agreement referred to therein as of the last day of the fiscal quarter or
   fiscal year of CC Operating, as the case may be, and (y) to the extent not
   previously disclosed to the Administrative Agent, a listing of (1) the
   jurisdiction of organization of each Loan Party and (2) any Intellectual
   Property acquired by any Loan Party since the date of the most recent list
   delivered pursuant to this clause (y);

          (c) as soon as available, and in any event no later than 50 days after
   the end of each fiscal year of CC Operating, a detailed consolidated budget
   for the following fiscal year (including a projected consolidated balance
   sheet of CC Operating and its Subsidiaries as of the end of the following
   fiscal year, the related consolidated statements of projected cash flow,
   projected changes in financial position and projected income and a
   description of the underlying assumptions applicable thereto), and, as soon
   as available, significant revisions, if any, of such budget and projections
   with respect to such fiscal year (collectively, the "Projections"), which
   Projections shall in each case be accompanied by a certificate of a
   Responsible Officer stating that such Projections have been prepared in good
   faith and are based on good faith estimates and assumptions believed by CC
   Operating to be reasonable at the time made (it being recognized by the
   Lenders that such opinions, projections and forecasts as to any future event
   or state of affairs are not to be viewed as factual information and that
   actual results during the period or periods covered by any such opinion,
   projection or forecast may differ from the opinions and projected or forecast
   results).

          (d) within 50 days after the end of each fiscal quarter of CC
   Operating, a narrative discussion and analysis of the financial condition and
   results of operations of CC Operating and its Subsidiaries for such fiscal
   quarter and for the period from the beginning of the then current fiscal year
   to the end of such fiscal quarter, as compared to the portion of the
   Projections covering such periods and to the comparable periods of the
   previous year; provided that the obligation imposed by this Section 6.2(d)
   may be met by furnishing the narrative discussion and analysis of the
   financial condition and results of operations contained in the Form 10-Q
   filed by Holdings with the SEC for such fiscal quarter so long as such
   discussion and analysis accurately and clearly discloses the financial
   condition and results of operations of CC Operating and its Subsidiaries as a
   separate group;

          (e) within five days after the same are sent, copies of all financial
   statements and reports that Holdings or CC Operating sends to the holders of
   any class of its debt securities or public equity securities and, within five
   days after the same are filed, copies of all financial statements and reports
   that Holdings or CC Operating may make to, or file with, the SEC; and

          (f) promptly, such additional financial and other information as any
   Lender may from time to time reasonably request.

<PAGE>

                                                                              46

          Any delivery required to be made pursuant to Section 6.2(d) or (e)
shall be deemed to have been made on the date on which CC Operating posts such
delivery on its website on the Internet at www.crowncomm.net or when such
delivery is posted on the SEC's website on the Internet at www.sec.gov; provided
that CC Operating shall give notice of any such posting to the Administrative
Agent (who shall then give notice of any such posting to the Lenders); provided,
further, that CC Operating shall deliver paper copies of any delivery referred
to in Section 6.2(d) or (e) to the Administrative Agent if the Administrative
Agent or any Lender requests CC Operating to deliver such paper copies until
written notice to cease delivering such paper copies is given by the
Administrative Agent.

          6.3   Payment of Obligations. Pay, discharge or otherwise satisfy at
or before maturity or before they become delinquent, as the case may be, all its
material obligations of whatever nature, except (a) where the amount or validity
thereof is currently being contested in good faith by appropriate proceedings
and reserves in conformity with GAAP with respect thereto have been provided on
the books of Holdings, CC Operating or their respective Subsidiaries, as the
case may be, or (b) in the case of trade payables, as could not, in the
aggregate, reasonably be expected to have a Material Adverse Effect.

          6.4   Maintenance of Existence; Compliance. (a) (i) Preserve, renew
and keep in full force and effect its corporate existence and (ii) take all
reasonable action to maintain all rights, privileges and franchises necessary or
desirable in the normal conduct of its business, except, in each case, as
otherwise permitted by Section 7.4 and except, in the case of clause (ii) above,
to the extent that failure to do so could not reasonably be expected to have a
Material Adverse Effect; and (b) comply with all Contractual Obligations and
Requirements of Law except to the extent that failure to comply therewith could
not, in the aggregate, reasonably be expected to have a Material Adverse Effect.

          6.5   Maintenance of Property; Insurance. (a) Keep all property
useful and necessary in its business in good working order and condition,
ordinary wear and tear excepted and (b) maintain with financially sound and
reputable insurance companies insurance on all its property in at least such
amounts and against at least such risks (but including in any event public
liability, product liability and business interruption) as are usually insured
against in the same general area by companies engaged in the same or a similar
business (it being understood that, to the extent consistent with prudent
business practice of Persons carrying on a similar business in a similar
location, a program of up to $5,000,000 of self-insurance for first or other
loss layers may be utilized).

          6.6   Inspection of Property; Books and Records; Discussions. (a)
Keep proper books of records and account in which full, true and correct entries
in conformity with GAAP and all Requirements of Law shall be made of all
dealings and transactions in relation to its business and activities and (b)
permit representatives of any Lender (i) to visit and inspect any of its
properties and examine and make abstracts from any of its books and records at
any reasonable time, upon reasonable notice and as often as may reasonably be
desired and (ii) to discuss the business, operations, properties and financial
and other condition of Holdings, CC Operating and their respective Subsidiaries
with officers and employees of Holdings, CC Operating and their respective
Subsidiaries and, so long as a representative of CC Operating is present during
such discussions (unless a Default or Event of Default has occurred and is
continuing), with its independent certified public accountants. Notwithstanding
the foregoing no disclosure of information subject to confidentiality or similar
constraints shall be required by this Section 6.6.

          6.7   Notices. Promptly give notice to the Administrative Agent of:

          (a) the occurrence of any Default or Event of Default;

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                                                                              47

          (b) any (i) default or event of default under any Contractual
   Obligation of Holdings, CC Operating or any of their respective Subsidiaries
   or (ii) litigation, investigation or proceeding that may exist at any time
   between Holdings, CC Operating or any of their respective Subsidiaries and
   any Governmental Authority, that in the case of clause (b)(i) or (b)(ii), if
   not cured or if adversely determined, as the case may be, could reasonably be
   expected to have a Material Adverse Effect;

          (c) any litigation or proceeding affecting Holdings, CC Operating or
   any of their respective Subsidiaries (i) in which the amount involved is
   $5,000,000 or more and not covered by insurance, (ii) in which injunctive or
   similar relief is sought or (iii) which relates to any Loan Document;

          (d) the following events, as soon as possible and, in any event,
   within 30 days after CC Operating knows thereof: (i) the occurrence of any
   Reportable Event with respect to any Plan, a failure to make any required
   contribution to a Plan, the creation of any Lien in favor of the PBGC or a
   Plan or any withdrawal from, or the termination, Reorganization or Insolvency
   of, any Multiemployer Plan or (ii) the institution of proceedings or the
   taking of any other action by the PBGC or CC Operating or any Commonly
   Controlled Entity or any Multiemployer Plan with respect to the withdrawal
   from, or the termination, Reorganization or Insolvency of, any Plan; and

          (e) any development or event that has had or could reasonably be
   expected to have a Material Adverse Effect.

          Each notice pursuant to this Section 6.7 shall be accompanied by a
statement of a Responsible Officer setting forth details of the occurrence
referred to therein and stating what action Holdings, CC Operating or the
relevant Subsidiary proposes to take with respect thereto.

          6.8   Environmental Laws. (a) Comply in all material respects with,
and use its reasonable efforts to ensure compliance in all material respects by
all tenants and subtenants, if any, with, all applicable Environmental Laws, and
obtain and comply in all material respects with and maintain, and use its
reasonable efforts to ensure that all tenants and subtenants obtain and comply
in all material respects with and maintain, any and all licenses, approvals,
notifications, registrations or permits required by applicable Environmental
Laws, except, in each case, to the extent that failure to do so could not
reasonably be expected to have a Material Adverse Effect.

          (b) Conduct and complete all investigations, studies, sampling and
testing, and all remedial, removal and similar actions required under
Environmental Laws and promptly comply in all material respects with all lawful
orders and directives of all Governmental Authorities regarding Environmental
Laws, except to the extent that the same are being contested in good faith by
appropriate proceedings and the pendency of such proceedings could not
reasonably be expected to have a Material Adverse Effect.

          6.9   Interest Rate Protection. CC Operating shall hedge the interest
rate, or maintain in effect a fixed interest rate, on at least 50% of the
aggregate principal amount of the total Indebtedness of Holdings, CC Operating
and its Subsidiaries on terms and conditions (including rate and tenor)
acceptable to the Administrative Agent.

          6.10  Additional Collateral, etc. (a) With respect to property
acquired after the Original Closing Date by CC Operating or any of its
Subsidiaries (other than (w) property acquired by Specified Subsidiaries, (x)
real property, (y) any property described in paragraph (b) below and (z) any
property subject to a Lien expressly permitted by Section 7.3(g)) as to which
the Administrative Agent, for the benefit of the Lenders, does not have a
perfected Lien, promptly (i) execute and deliver to the Administrative Agent
such amendments or supplements to the relevant Security Documents or such other

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                                                                              48

documents as the Administrative Agent deems necessary or advisable to grant to
the Administrative Agent, for the benefit of the Lenders, a security interest in
such property and (ii) take all actions necessary or advisable to grant to the
Administrative Agent, for the benefit of the Lenders, a perfected security
interest in such property, including the filing of Uniform Commercial Code
financing statements (or equivalent documents) in such jurisdictions as may be
required by the relevant Security Documents or by law or as may be reasonably
requested by the Administrative Agent. So long as no Default or Event of Default
has occurred and is continuing, actions taken pursuant to this Section 6.10(a)
will be consistent with those taken in connection with the Collateral at the
Original Closing Date.

          (b)  With respect to any new Subsidiary (other than a Specified
Subsidiary) created or acquired after the Original Closing Date by Holdings (if
such Subsidiary is an Unrestricted Subsidiary SPV), CC Operating or any of its
Subsidiaries (which, for the purposes of this paragraph (b), shall include any
Unrestricted Borrower Subsidiary that ceases to qualify as such), promptly (i)
execute and deliver to the Administrative Agent such amendments or supplements
to the relevant Security Documents or such other documents as the Administrative
Agent deems necessary or advisable to grant to the Administrative Agent, for the
benefit of the Lenders, a perfected security interest in the Capital Stock of
such new Subsidiary that is owned by Holdings, CC Operating or any of its
Subsidiaries, (ii) deliver to the Administrative Agent the certificates
representing such Capital Stock, together with undated stock powers, in blank,
executed and delivered by a duly authorized officer of Holdings, CC Operating or
such Subsidiary, as the case may be, (iii) cause such new Subsidiary (A) to
become a party to the Guarantee and Collateral Agreement (or agreements having a
substantially equivalent effect) , (B) to take such actions necessary or
advisable to grant to the Administrative Agent for the benefit of the Lenders a
perfected security interest in the Collateral of the type described in the
Guarantee and Collateral Agreement with respect to such new Subsidiary,
including the filing of Uniform Commercial Code financing statements (or
equivalent documents) in such jurisdictions as may be required by the Guarantee
and Collateral Agreement or by law or as may be reasonably requested by the
Administrative Agent and (C) to deliver to the Administrative Agent a
certificate of such Subsidiary, substantially in the form of Exhibit C, with
appropriate insertions and attachments, and (iv) in the case of any Foreign
Subsidiary, if reasonably requested by the Administrative Agent, deliver to the
Administrative Agent legal opinions relating to the matters described above,
which opinions shall be in form and substance, and from counsel, reasonably
satisfactory to the Administrative Agent. It is understood that any Specified
Non-Wholly Owned Subsidiary that is required to become a party to the Guarantee
and Collateral Agreement pursuant to this paragraph shall not be required to
become a "Guarantor" thereunder (until it becomes a Wholly Owned Subsidiary),
but shall be required to grant a security interest in any of its assets
constituting "Collateral" as defined therein for the purpose of securing its
obligations under its Specified Intercompany Note.

          6.11  Organizational Separateness. (a) Ensure that each Unrestricted
Subsidiary SPV does not (i) conduct, transact or otherwise engage in, or commit
to conduct, transact or otherwise engage in, any business or operations other
than those incidental to its ownership of the Capital Stock of Unrestricted
Subsidiaries, (ii) own, lease, manage or otherwise operate any properties or
assets other than the Capital Stock of Unrestricted Subsidiaries owned by it or
(iii) own the Capital Stock of both Foreign and Domestic Subsidiaries.

          (b) Ensure that the restrictions enumerated in paragraph (a) above are
set forth in the Governing Documents of each Unrestricted Subsidiary SPV.

          (c) Ensure that each Tower SPV does not (i) conduct, transact or
otherwise engage in, or commit to conduct, transact or otherwise engage in, any
business or operations other than those incidental to its ownership of
communications tower facilities or (ii) own, lease, manage or otherwise operate
any properties or assets other than the communications tower facilities owned by
it. Notwithstanding clauses

<PAGE>

                                                                              49

(i) and (ii) above, Crown Castle International Corp. de Puerto Rico may continue
to operate its microwave business as operated on the Original Closing Date.

          (d) Ensure that the restrictions enumerated in paragraph (c) above are
set forth in the Governing Documents of each Tower SPV.

          (e) Ensure that Crown Castle GT Corp. does not (i) conduct, transact
or otherwise engage in, or commit to conduct, transact or otherwise engage in,
any business or operations other than those incidental to its ownership of the
Capital Stock of the GTE JV, (ii) own, lease, manage or otherwise operate any
properties or assets other than the Capital Stock of the GTE JV owned by it or
(iii) own the Capital Stock of both Foreign and Domestic Subsidiaries.

          (f) Ensure that the restrictions enumerated in paragraph (e) above are
set forth in the Governing Documents of Crown Castle GT Corp.

          (g) Cause the consolidated and any consolidating financial statements
of Holdings and its Subsidiaries (including the Tower SPVs) and CC Operating and
its Subsidiaries (including the Tower SPVs), or any thereof, through appropriate
footnote disclosure, to separately indicate that the communications tower
facilities are owned by the Tower SPVs.

          (h) Maintain bank accounts with commercial banking institutions that
are separate from those of the Unrestricted Subsidiaries, the Unrestricted
Subsidiary SPVs and Crown Castle GT Corp., (ii) cause each Unrestricted
Subsidiary and Unrestricted Subsidiary SPV to maintain bank accounts, if any,
with commercial banking institutions that are separate from those of any other
Unrestricted Subsidiary or Unrestricted Subsidiary SPV or any Tower SPV or Crown
Castle GT Corp., (iii) cause each Tower SPV to maintain bank accounts, if any,
with commercial banking institutions that are separate from those of any
Unrestricted Subsidiary or Unrestricted Subsidiary SPV or Crown Castle GT Corp.
and (iv) cause Crown Castle GT Corp. to maintain bank accounts, if any, with
commercial banking institutions that are separate from those of any Unrestricted
Subsidiary, Unrestricted Subsidiary SPV or Tower SPV.

          (i) Conduct its affairs strictly in accordance with its Governing
Documents and to observe all necessary, appropriate, and customary corporate,
limited liability company and other organizational formalities, including
keeping separate and accurate minutes of meetings of its board of directors,
shareholders, managers, members or partners, as the case may be, passing all
resolutions or consents necessary to authorize actions to be taken, and
maintaining accurate and separate books, records and accounts and in a manner
permitting its assets and liabilities to be easily separated and readily
ascertained.

          (j) Ensure that each Unrestricted Subsidiary, Unrestricted Subsidiary
SPV and Tower SPV and Crown Castle GT Corp. strictly complies with its Governing
Documents.

          (k) Ensure that its monies and other assets are not commingled with
the monies or other assets of any Unrestricted Subsidiary or Unrestricted
Subsidiary SPV or Crown Castle GT Corp. and otherwise remain clearly traceable,
(ii) cause each Unrestricted Subsidiary and Unrestricted Subsidiary SPV and
Crown Castle GT Corp. to ensure that its monies and other assets are not
commingled with the monies or other assets of any other Unrestricted Subsidiary
or Unrestricted Subsidiary SPV or any Tower SPV or Crown Castle GT Corp. and
otherwise remain clearly traceable and (iii) cause each Tower SPV to ensure that
its monies and other assets are not commingled with the monies or other assets
of any Unrestricted Subsidiary or Unrestricted Subsidiary SPV or Crown Castle GT
Corp. and otherwise remain clearly traceable.

<PAGE>

                                                                              50

          (l) Cause each Unrestricted Subsidiary, Unrestricted Subsidiary SPV
and Tower SPV and Crown Castle GT Corp. to not hold itself out to the public or
to any of its individual creditors as being a unified Person with common assets
and liabilities with Holdings, CC Operating or any of their respective
Subsidiaries or act in a manner that would otherwise cause its creditors to
believe that such Person was not a separate entity from such other Persons.

          (m) Without limiting the generality of the foregoing, not take any
action, or conduct its affairs in a manner, that could reasonably be expected to
result in the separate existence of any Unrestricted Subsidiary, Unrestricted
Subsidiary SPV or Tower SPV or Crown Castle GT Corp. being ignored, or the
assets and liabilities of any Unrestricted Subsidiary, Unrestricted Subsidiary
SPV or Tower SPV or Crown Castle GT Corp. being substantively consolidated with
those of Holdings, CC Operating or any of their respective Subsidiaries
(including any other Unrestricted Subsidiary, Unrestricted Subsidiary SPV or
Tower SPV or Crown Castle GT Corp.) in a bankruptcy, reorganization or other
insolvency proceeding.

                          SECTION 7. NEGATIVE COVENANTS

          Holdings and CC Operating hereby jointly and severally agree that, so
long as the Commitments remain in effect, any Letter of Credit remains
outstanding or any Loan or other amount is owing to any Lender or the
Administrative Agent hereunder, each of Holdings and CC Operating shall not, and
shall not permit any of their respective Subsidiaries to, directly or indirectly
(provided that Sections 7.1, 7.2, 7.5, 7.6, 7.7, 7.8, 7.9, 7.11, 7.14 and 7.16
shall apply only to CC Operating and its Subsidiaries):

          7.1  Financial Condition Covenants.Consolidated Leverage Ratio.
   Permit the Consolidated Leverage Ratio determined as of the last day of any
   fiscal quarter of CC Operating ending during any period set forth below to
   exceed the ratio set forth below opposite such period:

          Period                              Consolidated Leverage Ratio
          ------                              ---------------------------

     through 12/31/03                                4.50 to 1.00
     01/01/04 and thereafter                         4.00 to 1.00

          (b)  Consolidated Interest Coverage Ratio. Permit the Consolidated
   Interest Coverage Ratio determined as of the last day of any fiscal quarter
   ending during any period set forth below to be less than the ratio set forth
   below opposite such period:

                                                  Consolidated Interest
        Fiscal Quarter                               Coverage Ratio
        --------------                              ----------------

       through 12/31/03                               2.25 to 1.00
       01/01/04 - 12/31/04                            2.50 to 1.00
       01/01/05 and thereafter                        2.75 to 1.00

          (c)  Consolidated Debt Service Coverage Ratio. Permit the
   Consolidated Debt Service Coverage Ratio determined as of the last day of
   any fiscal quarter to be less than 1.15 to 1.00.

          (d)  Consolidated Fixed Charge Coverage Ratio. Permit the
   Consolidated Fixed Charge Coverage Ratio determined as of the last day of
   any fiscal quarter to be less than 1.10 to 1.00.

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                                                                              51

          7.2   Indebtedness. Create, issue, incur, assume, become liable in
respect of or suffer to exist any Indebtedness, except:

          (a) Indebtedness of any Loan Party pursuant to any Loan Document;

          (b) Indebtedness of (i) CC Operating to any Subsidiary, (ii) any
   Wholly Owned Subsidiary Guarantor to CC Operating or any other Subsidiary,
   (iii) any Specified Non-Wholly Owned Subsidiary to CC Operating or any Wholly
   Owned Qualifying Subsidiary Guarantor pursuant to a Specified Intercompany
   Note, (iv) Crown Castle UK to CC Operating outstanding on the Restatement
   Effective Date in the principal amount of $300,000,000 so long as, in the
   case of this clause (iv), such Indebtedness has been evidenced by a
   promissory note that has been pledged as Collateral, and (v) any member of
   the Crown Castle UK Group that is both a Wholly Owned Subsidiary and a
   Specified Subsidiary to any other such member, provided that for purposes of
   this Section 7.2(b), the Australian Subsidiary shall be considered a Wholly
   Owned Subsidiary Guarantor so long as all of its Capital Stock is pledged as
   Collateral;

          (c) (i) Guarantee Obligations incurred in the ordinary course of
   business by CC Operating or any of its Subsidiaries of obligations of any
   Wholly Owned Subsidiary Guarantor, (ii) Guarantee Obligations incurred in the
   ordinary course of business by any Subsidiary Guarantor of obligations of CC
   Operating and (iii) Guarantee Obligations incurred in the ordinary course of
   business by any member of the Crown Castle UK Group that is a Specified
   Subsidiary of obligations of any other such member;

          (d) (i) Indebtedness outstanding on the Restatement Effective Date and
   listed on Schedule 7.2(d) and any refinancings, refundings, renewals or
   extensions thereof (without increasing, or shortening the maturity of, the
   principal amount thereof, other than to the extent permitted by Section
   7.2(l)) and (ii) until redeemed in accordance with Section 5.1(d), Crown
   Castle UK's 9% Guaranteed Bonds due 2007 and the guarantees in respect
   thereof as in effect on the Restatement Effective Date;

          (e) Indebtedness (including, without limitation, Capital Lease
   Obligations) secured by Liens permitted by Section 7.3(g) in an aggregate
   principal amount not to exceed $25,000,000 at any one time outstanding;

          (f) Hedge Agreements in respect of Indebtedness otherwise permitted
   hereby that bears interest at a floating rate, so long as such agreements are
   not entered into for speculative purposes;

          (g) Indebtedness of any Subsidiary acquired in connection with any
   Investment permitted pursuant to Section 7.7(i) or (j); provided that (i)
   such Indebtedness existed at the time such Person became a Subsidiary and was
   not incurred in anticipation thereof, (ii) no Person other than such
   Subsidiary becomes an obligor in respect of such Indebtedness and (iii) the
   aggregate amount of such Indebtedness (whether or not subsequently repaid)
   shall constitute usage of the basket provided in Section 7.7(i)(i) or (j)(i),
   as applicable, unless and until such Subsidiary becomes a Wholly Owned
   Qualifying Subsidiary Guarantor, at which time such Indebtedness of such
   Subsidiary shall no longer be permitted to remain outstanding and shall no
   longer constitute usage of such baskets;

          (h) Indebtedness of any Subsidiary to CC Operating; provided that (i)
   no Person other than such Subsidiary becomes an obligor in respect of such
   Indebtedness and (ii) the actual outstanding aggregate amount of such
   Indebtedness shall constitute usage of the basket provided in Section
   7.7(i)(i) or (j)(i), as applicable, unless and until such Subsidiary becomes
   a Wholly Owned Qualifying Subsidiary Guarantor, at which time such
   Indebtedness of such Subsidiary shall no longer constitute usage of such
   baskets;

<PAGE>

                                                                              52

          (i) Indebtedness consisting of guaranties of loans made to officers,
   directors or employees of Holdings, CC Operating or any Subsidiary of CC
   Operating in an aggregate amount which, when added to the outstanding
   principal amount of loans and advances made pursuant to Section 7.7(d), shall
   not exceed $5,000,000 at any one time outstanding;

          (j) unsecured trade accounts payable incurred in the ordinary course
   of business and not more than 120 days past due (but excluding any
   Indebtedness for borrowed money);

          (k) Permitted Borrower Subordinated Indebtedness owing by CC Operating
   to Holdings; and

          (l) additional Indebtedness of CC Operating or any of its Subsidiaries
   in an aggregate principal amount (for CC Operating and all Subsidiaries) not
   to exceed $25,000,000 at any one time outstanding.

Notwithstanding anything to the contrary in this Agreement, (i) CC Operating
shall not, and shall not permit any of its Subsidiaries to, directly or
indirectly, guarantee or otherwise become liable in respect of any Indebtedness
or preferred stock of Holdings and (ii) the aggregate principal amount of
Indebtedness incurred by the Crown Castle UK Group pursuant to Section 7.2
(other than clauses (b)(iv), (b)(v) and (j) thereof) shall not exceed
$10,000,000.

          7.3   Liens. Create, incur, assume or suffer to exist any Lien upon
any of its property, whether now owned or hereafter acquired, except:

          (a) Liens for taxes not yet due or that are being contested in good
   faith by appropriate proceedings, provided that adequate reserves with
   respect thereto are maintained on the books of CC Operating or its
   Subsidiaries, as the case may be, in conformity with GAAP;

          (b) carriers', warehousemen's, mechanics', materialmen's, repairmen's
   or other like Liens arising in the ordinary course of business that secure
   payments that are not more than 60 days delinquent in accordance with their
   terms or that are being contested in good faith by appropriate proceedings;

          (c) pledges or deposits in connection with workers' compensation,
   unemployment insurance and other social security legislation and deposits
   securing liability to insurance carriers under insurance or self-insurance
   arrangements;

          (d) deposits to secure the performance of bids, trade contracts (other
   than for borrowed money), leases, statutory obligations, surety and appeal
   bonds, performance bonds and other obligations of a like nature incurred in
   the ordinary course of business;

          (e) easements, rights-of-way, restrictions and other similar
   encumbrances that, in the aggregate, are not substantial in amount and that
   do not in any case materially detract from the value of the property subject
   thereto or materially interfere with the ordinary conduct of the business of
   CC Operating or any of its Subsidiaries;

          (f) Liens in existence on the Restatement Effective Date listed on
   Schedule 7.3(f), securing Indebtedness permitted by Section 7.2(d), provided
   that no such Lien is spread to cover any additional property after the
   Restatement Effective Date and that the amount of Indebtedness secured
   thereby is not increased (except to the extent permitted by Section 7.3(o));

          (g) Liens securing Indebtedness of CC Operating or any other
   Subsidiary incurred pursuant to Section 7.2(e) to finance the acquisition of
   fixed or capital assets, provided that (i) such

<PAGE>

                                                                              53

   Liens shall be created substantially simultaneously with the acquisition of
   such fixed or capital assets, (ii) such Liens do not at any time encumber
   any property other than the property financed by such Indebtedness and
   (iii) the amount of Indebtedness secured thereby is not increased;

          (h) Liens created pursuant to the Security Documents;

          (i) any interest or title of a lessor (including sublessors) under any
   lease (or sublease) entered into by CC Operating or any other Subsidiary in
   the ordinary course of its business and covering only the assets so leased;

          (j) Liens on the property or assets of a Person which becomes a
   Subsidiary after the Restatement Effective Date securing Indebtedness
   permitted by Section 7.2(g), provided that (i) such Liens existed at the time
   such Person became a Subsidiary and were not created in anticipation thereof,
   (ii) any such Lien is not expanded to cover any property or assets of such
   Person after the time such Person becomes a Subsidiary (other than after
   acquired title in or on such property and proceeds of the existing collateral
   in accordance with the instrument creating such Lien), (iii) the amount of
   Indebtedness secured thereby is not increased, and (iv) neither (x) the
   aggregate outstanding principal amount of the obligations secured thereby nor
   (y) the aggregate fair market value (determined as of the date such Lien is
   incurred) of the assets subject thereto exceeds (as to all relevant
   Subsidiaries) $20,000,000 at any one time;

          (k) licenses, leases or subleases permitted hereunder granted to other
   Persons in the ordinary course of business not interfering in any material
   respect in the business of CC Operating or any of its Subsidiaries;

          (l) attachment or judgment Liens in respect of judgments or decrees
   that have been vacated, discharged, stayed or bonded pending appeal within 60
   days from the entry thereof and, in addition, attachment or judgment Liens in
   an aggregate amount outstanding at any one time not in excess of $5,000,000
   (not paid or fully covered by insurance as to which the relevant insurance
   company has acknowledged in writing coverage);

          (m) Liens arising from precautionary Uniform Commercial Code financing
   statement filings with respect to operating leases or consignment
   arrangements entered into by CC Operating or any of its Subsidiaries in the
   ordinary course of business;

          (n) Liens in favor of a banking institution arising by operation of
   law encumbering deposits (including the right of set-off) held by such
   banking institution incurred in the ordinary course of business and that are
   within the general parameters customary in the banking industry; and

          (o) Liens not otherwise permitted by this Section so long as neither
   (i) the aggregate outstanding principal amount of the obligations secured
   thereby nor (ii) the aggregate fair market value (determined as of the date
   such Lien is incurred) of the assets subject thereto exceeds (as to CC
   Operating and all Subsidiaries) $20,000,000 at any one time; provided, that
   no such Liens may be incurred by the Crown Castle UK Group.

          7.4   Fundamental Changes. Enter into any merger, consolidation or
amalgamation, or liquidate, wind up or dissolve itself (or suffer any
liquidation or dissolution), or Dispose of, all or substantially all of its
property or business, except that:

          (a) any Subsidiary of CC Operating may be merged or consolidated with
   or into CC Operating (provided that CC Operating shall be the continuing or
   surviving corporation) or with or into any Wholly Owned Subsidiary Guarantor
   (provided that the Wholly Owned Subsidiary Guarantor shall be the continuing
   or surviving corporation and provided, further, that if the merged or

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                                                                              54

   consolidated Subsidiary is a Wholly Owned Qualifying Subsidiary Guarantor,
   the continuing or surviving corporation must also be a Wholly Owned
   Qualifying Subsidiary Guarantor);

          (b) any Subsidiary of CC Operating may Dispose of any or all of its
   assets (upon voluntary liquidation or otherwise) to CC Operating or any
   Wholly Owned Subsidiary Guarantor, provided that if the Subsidiary making
   such Disposition is a Wholly Owned Qualifying Subsidiary Guarantor, the
   relevant transferee, if other than CC Operating, must also be a Wholly Owned
   Qualifying Subsidiary Guarantor; and

          (c) so long as no Default or Event of Default has occurred or is
   continuing or would result therefrom, Holdings may be merged or consolidated
   with or into another Person (provided that either (i) Holdings is the
   continuing or surviving entity or (ii) if Holdings is not the continuing or
   surviving entity, such continuing or surviving entity assumes the obligations
   of Holdings under the Loan Documents to which it is a party pursuant to an
   instrument in form and substance reasonably satisfactory to the
   Administrative Agent and, in connection therewith, the Administrative Agent
   shall receive such legal opinions, certificates and other documents as it may
   reasonably request).

          7.5   Disposition of Property. Dispose of any of its property, whether
now owned or hereafter acquired, or, in the case of any Subsidiary, issue or
sell any shares of such Subsidiary's Capital Stock to any Person, except:

          (a) the Disposition of obsolete, condemned or worn out property in the
   ordinary course of business;

          (b) the sale of inventory in the ordinary course of business; the
   Disposition of Cash Equivalents for fair value for cash or other Cash
   Equivalents; the license of Intellectual Property in the ordinary course of
   business; and leases or subleases entered into in the ordinary course of
   business and not materially interfering with the ordinary conduct of
   business;

          (c) Dispositions permitted by Section 7.4(b);

          (d) the sale or issuance of any Subsidiary's Capital Stock to CC
   Operating or any Wholly Owned Subsidiary Guarantor; provided that if the
   selling or issuing Subsidiary is a Wholly Owned Qualifying Subsidiary
   Guarantor, the recipient of such Capital Stock, if other than CC Operating,
   must also be a Wholly Owned Qualifying Subsidiary Guarantor;

          (e) the designation of the Australian Subsidiary as an Unrestricted
   Subsidiary and the making of the Australian Subsidiary into a Subsidiary of
   Holdings, in each case pursuant to the terms of Section 7.20;

          (f) the designation of any Specified Non-Wholly Owned Subsidiary as an
   Unrestricted Subsidiary and the making of any Specified Non-Wholly Owned
   Subsidiary into a Subsidiary of Holdings, in each case pursuant to the terms
   of Section 7.20;

          (g) any member of the Crown Castle UK Group that is a Specified
   Subsidiary may Dispose of property if required to do so by law or by the
   lessor of the land or site on which such property is located so long as (i)
   such property is Disposed of on fair and reasonable terms (including a
   Disposition in exchange for recovery of statutory compensation), (ii) such
   property is replaced substantially concurrently with such Disposition with
   property having a comparable use and comparable or greater value and (iii)
   the aggregate net sale proceeds of all property Disposed of pursuant to this
   paragraph (g) (excluding net sale proceeds of the transaction currently
   contemplated relating to the Lisnagarvey broadcasting site) shall not exceed
   $15,000,000 per annum; and

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                                                                              55

          (h)  the Disposition of other property having a fair market value not
   to exceed $50,000,000 in the aggregate for any fiscal year of CC Operating,
   it being understood that the Net Cash Proceeds of such Dispositions shall be
   applied to prepay the Loans and reduce the Commitments to the extent required
   by Section 2.9(b).

          7.6   Restricted Payments. Declare or pay any dividend (other than
dividends payable solely in common stock of the Person making such dividend) on,
or make any payment on account of, or set apart assets for a sinking or other
analogous fund for, the purchase, redemption, defeasance, retirement or other
acquisition of, any Capital Stock of Holdings, CC Operating or any Subsidiary,
whether now or hereafter outstanding, or make any other distribution in respect
thereof, either directly or indirectly, whether in cash or property or in
obligations of Holdings, CC Operating or any Subsidiary (collectively,
"Restricted Payments"), except that:

          (a) any Subsidiary may make Restricted Payments to CC Operating or any
   Wholly Owned Subsidiary Guarantor; provided that if the Subsidiary making
   such a Restricted Payment is a Wholly Owned Qualifying Subsidiary Guarantor,
   the recipient of such Restricted Payment, if other than CC Operating, must
   also be a Wholly Owned Qualifying Subsidiary Guarantor;

          (b) so long as no Default or Event of Default shall have occurred and
   be continuing or would result therefrom (including, on a pro forma basis,
   pursuant to Section 7.1), CC Operating may pay dividends to Holdings to
   permit Holdings to purchase Holdings' common stock or common stock options
   from present or former officers or employees of Holdings, CC Operating or any
   Subsidiary upon the death, disability or termination of employment of such
   officer or employee, provided, that the aggregate amount of payments under
   this paragraph (b) after the Original Closing Date (net of any proceeds
   received by Holdings and contributed to CC Operating after the Original
   Closing Date in connection with resales of any common stock or common stock
   options so purchased) shall not exceed $10,000,000 in any fiscal year of CC
   Operating or $25,000,000 during the term of this Agreement;

          (c) so long as no Default or Event of Default shall have occurred and
   be continuing or would result therefrom (including, on a pro forma basis,
   pursuant to Section 7.1), CC Operating may pay dividends to Holdings to
   permit Holdings to (i) pay corporate overhead expenses incurred in the
   ordinary course of business not to exceed $17,500,000 in any fiscal year,
   (ii) pay any taxes that are due and payable by Holdings and CC Operating as
   part of a consolidated group and (iii) make scheduled interest and dividend
   payments in respect of Holdings Qualified Obligations;

          (d) so long as no Default or Event of Default shall have occurred and
   be continuing or would result therefrom (including, on a pro forma basis,
   pursuant to Section 7.1), any Subsidiary of CC Operating may pay dividends to
   the holders of its common stock; provided that all such dividends shall be
   made pro rata according to the respective ownership interests in such
   Subsidiary; and

          (e) so long as no Default or Event of Default shall have occurred and
   be continuing or would result therefrom (including, on a pro forma basis,
   pursuant to Section 7.1), CC Operating may pay a dividend to Holdings in an
   amount equal to (i) the gross proceeds of the Incremental Tranche B Term
   Loans minus (ii) the amounts expended or to be expended in connection with
   the transactions referred to in Sections 5.1(c), (d) and (l) and the fees and
   expenses associated with the effectiveness of this Agreement, which amount
   shall promptly following the making of such dividend be applied to repay any
   Indebtedness listed on Schedule 7.6(e).

It is understood that nothing contained in this Section 7.6 shall restrict the
ability of Holdings to make Restricted Payments.

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                                                                              56

          7.7   Investments. Make any advance, loan, extension of credit (by way
of guaranty or otherwise) or capital contribution to, or purchase any Capital
Stock, bonds, notes, debentures or other debt securities of, or any assets
constituting a business unit of, or make any other investment in, any Person
(all of the foregoing, "Investments"), except:

          (a) extensions of trade credit in the ordinary course of business;

          (b) Investments in Cash Equivalents;

          (c) Guarantee Obligations permitted by Section 7.2 and intercompany
   loans permitted by Section 7.2(b)(iv) or (v);

          (d) loans and advances to officers, directors and employees of
   Holdings, CC Operating or any Subsidiary of CC Operating in the ordinary
   course of business (including for travel, entertainment and relocation
   expenses) in an aggregate amount for Holdings, CC Operating or any Subsidiary
   of CC Operating which, when added to the outstanding principal amount of
   Indebtedness incurred pursuant to Section 7.2(i), shall not exceed $5,000,000
   at any one time outstanding;

          (e) Investments in assets useful in the business of CC Operating and
   its Subsidiaries made by CC Operating or any of its Subsidiaries with the
   proceeds of any Reinvestment Deferred Amount;

          (f) so long as no Default or Event of Default shall have occurred and
   be continuing or would result therefrom (including, on a pro forma basis,
   pursuant to Section 7.1), Investments by CC Operating or any of its
   Subsidiaries in CC Operating or any Person that is or concurrently therewith
   becomes a Wholly Owned Qualifying Subsidiary Guarantor;

          (g) so long as no Default or Event of Default shall have occurred and
   be continuing or would result therefrom (including, on a pro forma basis,
   pursuant to Section 7.1), (i) acquisitions by CC Operating or any Wholly
   Owned Qualifying Subsidiary Guarantor of Permitted Communications Facilities
   located in the United States and (ii) acquisitions by any Specified
   Subsidiary of Permitted Communications Facilities located in Australia or the
   United Kingdom, as applicable;

          (h) the acquisitions listed on Schedule 7.7(h);

          (i) so long as no Default or Event of Default has occurred and is
   continuing (including, on a pro forma basis, pursuant to Section 7.1),
   Investments in any Person that is or concurrently therewith becomes a
   Subsidiary of CC Operating, in an aggregate amount (net of any return of
   capital) not to exceed at any time the sum of (i) $50,000,000 and (ii) the
   amount of cash contributed by Holdings to CC Operating after the Original
   Closing Date in the form of common equity and used by CC Operating solely for
   such purpose;

          (j) in addition to Investments otherwise expressly permitted by this
   Section, so long as no Default or Event of Default has occurred and is
   continuing (including, on a pro forma basis, pursuant to Section 7.1),
   Investments of any type by CC Operating or any of its Subsidiaries in an
   aggregate amount (net of any return of capital) not to exceed at any time the
   sum of (i) $125,000,000 and (ii) the amount of cash contributed by Holdings
   to CC Operating after the Original Closing Date in the form of common equity
   and used by CC Operating solely for such purpose;

          (k) the Australian Intercompany Loans;

          (l) the UK Roll-Up; and

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                                                                              57

          (m) in addition to Investments otherwise expressly permitted by this
   Section, with the consent of the Required Lenders, any Investment in any
   Person that is not or will not concurrently therewith become a Wholly Owned
   Qualifying Subsidiary Guarantor.

          7.8   Certain Payments and Modifications of Certain Agreements. (a)
Make or offer to make any payment, prepayment, repurchase or redemption in
respect of, or otherwise optionally or voluntarily defease or segregate funds
with respect to, any Permitted Borrower Subordinated Indebtedness other than the
payment of such Indebtedness with the proceeds of Revolving Loans or with Excess
Cash Flow not required to be applied to prepay Term Loans or reduce Revolving
Commitments pursuant to Section 2.9(c).

          (b) Amend, modify, waive or otherwise change, or consent or agree to
any amendment, modification, waiver or other change to, any of the terms of (i)
any Permitted Borrower Subordinated Indebtedness (other than any such amendment,
modification, waiver or other change that would extend the maturity or reduce
the amount of any payment of principal thereof or reduce the rate or extend any
date for payment of interest thereon) or (ii) the agreements governing the GTE
JV or the arrangements with Bell South Mobility Inc. (other than any such
amendment, modification, waiver or other change that is immaterial to the
interests of the Lenders).

          7.9   Transactions with Affiliates. Enter into any transaction,
including any purchase, sale, lease or exchange of property, the rendering of
any service or the payment of any management, advisory or similar fees, with any
Affiliate (other than CC Operating or any Wholly Owned Subsidiary Guarantor)
unless such transaction is (a) otherwise permitted under this Agreement, (b) in
the ordinary course of business of CC Operating or such Subsidiary, as the case
may be, and (c) upon fair and reasonable terms no less favorable to CC Operating
or such Subsidiary, as the case may be, than it would obtain in a comparable
arm's length transaction with a Person that is not an Affiliate.

          7.10  Sales and Leasebacks. Enter into any arrangement with any Person
providing for the leasing by Holdings, CC Operating or any Subsidiary of real or
personal property that has been or is to be sold or transferred by Holdings, CC
Operating or such Subsidiary to such Person or to any other Person to whom funds
have been or are to be advanced by such Person on the security of such property
or rental obligations of Holdings, CC Operating or such Subsidiary.

          7.11  Changes in Fiscal Periods. Permit the fiscal year of CC
Operating to end on a day other than December 31 or change CC Operating's method
of determining fiscal quarters.

          7.12  Negative Pledge Clauses. Enter into or suffer to exist or become
effective any agreement that prohibits or limits the ability of Holdings, CC
Operating or any of its Subsidiaries to create, incur, assume or suffer to exist
any Lien upon any of its property or revenues, whether now owned or hereafter
acquired, to secure its obligations under the Loan Documents to which it is a
party (without limitation as to amount), other than (a) this Agreement and the
other Loan Documents, (b) any agreements governing any purchase money Liens or
Capital Lease Obligations otherwise permitted hereby (in which case, any
prohibition or limitation shall only be effective against the assets financed
thereby), (c) any agreements governing any Investment in any joint venture
(other than a Subsidiary) that limit the ability to grant a security interest in
the Capital Stock of such joint venture, (d) customary restrictions entered into
in the ordinary course of business with respect to Intellectual Property that
limit the ability to grant a security interest in such Intellectual Property,
(e) any agreements governing any leasehold interest that limit the ability to
grant a security interest in such leasehold interest, (f) restrictions in the
formation agreement of the GTE JV or in the organizational documents of any
Specified Non-Wholly Owned Subsidiary that limit the ability to grant a security
interest in the assets of such Person, (g) the Holdings Debt Agreements and (h)
any agreements containing restrictions substantially comparable to those
described in clause (g) above and governing any other Indebtedness of Holdings.

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                                                                              58

          7.13  Clauses Restricting Subsidiary Distributions. Enter into or
suffer to exist or become effective any consensual encumbrance or restriction on
the ability of any Subsidiary of CC Operating to (a) make Restricted Payments in
respect of any Capital Stock of such Subsidiary held by, or pay any Indebtedness
owed to, CC Operating or any other Subsidiary of CC Operating, (b) make loans or
advances to, or other Investments in, CC Operating or any other Subsidiary of CC
Operating or (c) transfer any of its assets to CC Operating or any other
Subsidiary of CC Operating, except for such encumbrances or restrictions
existing under or by reason of (i) any restrictions existing under the Loan
Documents, (ii) any restrictions with respect to a Subsidiary imposed pursuant
to an agreement that has been entered into in connection with the Disposition of
all or substantially all of the Capital Stock or assets of such Subsidiary,
(iii) any restrictions imposed pursuant to the Holdings Debt Agreements and (iv)
any restrictions substantially comparable to the restrictions permitted by
clause (iii) above and imposed pursuant to any agreement governing any other
Indebtedness of Holdings.

          7.14  Lines of Business. Enter into any business, either directly or
through any Subsidiary, except for those businesses in which CC Operating and
its Subsidiaries are engaged on the Restatement Effective Date or that are
reasonably related thereto.

          7.15  Holding Company Status. In the case of Holdings, (a) conduct,
transact or otherwise engage in, or commit to conduct, transact or otherwise
engage in, any business or operations other than those incidental to its
ownership of Capital Stock described in clause (b) below, (b) own, lease, manage
or otherwise operate any properties or assets other than cash, Cash Equivalents
and the Capital Stock of CC Operating or any other Person (so long as, in the
case of any such Person that is a Subsidiary of Holdings, such Subsidiary is
either an Unrestricted Holdings Subsidiary or an Unrestricted Subsidiary SPV and
(c) permit any Subsidiary of any Unrestricted Subsidiary SPV not to qualify as
an Unrestricted Subsidiary at any time. It is understood and agreed that this
Section 7.15 shall not prevent Holdings from (x) performing management and
administrative functions of the type performed by it as of the Original Closing
Date or (y) incurring Indebtedness or issuing Capital Stock.

          7.16  Communications Tower Facilities. Hold any communications tower
facilities located in the United States, whether now owned or hereafter
acquired, other than in a Tower SPV.

          7.17  Unrestricted Subsidiary Capital Stock; GTE JV Capital Stock. (a)
Hold any of the Capital Stock of an Unrestricted Subsidiary other than in an
Unrestricted Subsidiary SPV.

          (b) Hold any of the Capital Stock of the GTE JV owned directly or
indirectly by CC Operating other than in Crown Castle GT Corp.

          7.18  GTE JV and Crown Castle GT Corp.; Specified Non-Wholly Owned
Subsidiaries, Tower SPVs and Unrestricted Subsidiary SPVs; Australian
Subsidiary. (a) Permit the GTE JV or Crown Castle GT Corp. to incur or suffer to
exist any Indebtedness or create, incur, assume or suffer to exist any Lien upon
any of its property, whether now owned or hereafter acquired.

          (b) Permit any Specified Non-Wholly Owned Subsidiary (or any
Subsidiary thereof), Tower SPV or Unrestricted Subsidiary SPV to incur or suffer
to exist any Indebtedness or create, incur, assume or suffer to exist any Lien
upon any of its property, whether now owned or hereafter acquired, in each case
other than pursuant to the Loan Documents to which it is a party.

          (c) Permit the direct parent of the Australian Subsidiary, the
Australian Subsidiary (or any Subsidiary thereof) to incur or suffer to exist
any Indebtedness or create, incur, assume or suffer to exist any Lien upon any
of its property, whether now owned or hereafter acquired, in each case other
than pursuant to the Loan Documents to which it is a party.

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                                                                              59

          7.19  Designation of Unrestricted Subsidiaries as Subsidiaries. If a
Default or Event of Default shall have occurred and be continuing or would
result therefrom (including, on a pro forma basis, pursuant to Section 7.1),
designate an Unrestricted Subsidiary as a Subsidiary. Notwithstanding anything
to the contrary contained in this Agreement, so long as no Default or Event of
Default shall have occurred and be continuing or would result therefrom
(including, on a pro forma basis, pursuant to Section 7.1), CC Operating may
designate an Unrestricted Subsidiary as a Subsidiary.

          7.20  Designation of Subsidiaries as Unrestricted Subsidiaries. Other
than in accordance with this Section 7.20, designate a Subsidiary as an
Unrestricted Subsidiary other than concurrently with the creation or acquisition
thereof. Notwithstanding anything to the contrary contained in this Agreement,
so long as (a) no Default or Event of Default would result therefrom (including,
on a pro forma basis, pursuant to Section 7.1) and (b) the Australian Subsidiary
has, concurrently with such designation, paid to CC Operating in full in cash an
amount equal to the greater of (i) the Australian Intercompany Loans and (ii)
the amount of Consolidated EBITDA attributable to the Australian Subsidiary for
the most recent period of four consecutive fiscal quarters for which the
relevant financial information is available multiplied by the then applicable
Consolidated Leverage Ratio required by Section 7.1(a), CC Operating may
designate each of the Australian Subsidiary and its direct parent as an
Unrestricted Subsidiary to the extent each otherwise qualifies as an
Unrestricted Subsidiary. Notwithstanding anything to the contrary contained in
this Agreement, so long as (a) no Default or Event of Default would result
therefrom (including, on a pro forma basis, pursuant to Section 7.1) and (b) the
relevant Specified Non-Wholly Owned Subsidiary has, concurrently with such
designation, paid to CC Operating or the relevant Wholly Owned Qualifying
Subsidiary Guarantor, as applicable, in full in cash an amount equal to the
greater of (i) the obligations under its Specified Intercompany Note and (ii)
the amount of Consolidated EBITDA attributable to such Specified Non-Wholly
Owned Subsidiary for the most recent period of four consecutive fiscal quarters
for which the relevant financial information is available pursuant to clause (x)
of the definition of "Consolidated EBITDA" multiplied by 7.50, CC Operating may
designate such Specified Non-Wholly Owned Subsidiary as an Unrestricted
Subsidiary to the extent it otherwise qualifies as an Unrestricted Subsidiary.
If any Subsidiary is designated as an Unrestricted Subsidiary pursuant to either
of the preceding sentences, (i) the Liens on the assets of such Subsidiary
created by the Security Documents to which such Subsidiary is a party will be
released and all obligations (other than those expressly stated to survive such
termination) of such Subsidiary under such Security Documents shall terminate,
all without delivery of any instrument or performance of any act by any Person
and (ii) such Subsidiary may become a Subsidiary of Holdings. In addition, if
the Australian Subsidiary is designated as an Unrestricted Subsidiary pursuant
to this Section 7.20, any pledge of its Capital Stock then in existence other
than by CC Operating or any of its Affiliates will be released without delivery
of any instrument or performance of any act by any Person.

          7.21  CC Puerto Rico; Crown Castle UK Group. Permit CC Puerto Rico (so
long as it is a Borrower) or any member of the Crown Castle UK Group that has
assets (including Capital Stock of other Persons) with an aggregate book value
in excess of $5,000,000 to cease to be a Wholly Owned Subsidiary of CC
Operating.

                          SECTION 8. EVENTS OF DEFAULT

          If any of the following events shall occur and be continuing:

          (a) the Borrower shall fail to pay any principal of any Loan or
   Reimbursement Obligation when due in accordance with the terms hereof; or the
   Borrower shall fail to pay any interest on any Loan or Reimbursement
   Obligation, or any other amount payable hereunder or under any other Loan
   Document, within three days after any such interest or other amount becomes
   due in accordance with the terms hereof; or

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                                                                              60

          (b) any representation or warranty made or deemed made by any Loan
   Party herein or in any other Loan Document or that is contained in any
   certificate, document or financial or other statement furnished by it at any
   time under or in connection with this Agreement or any such other Loan
   Document shall prove to have been inaccurate in any material respect on or as
   of the date made or deemed made; or

          (c) any Loan Party shall default in the observance or performance of
   any agreement contained in clause (i) of Section 6.4(a) (with respect to
   Holdings and CC Operating only), Section 6.7(a), Section 6.11 or Section 7 of
   this Agreement or Sections 5.4 and 5.5(b) of the Guarantee and Collateral
   Agreement; or

          (d) any Loan Party shall default in the observance or performance of
   any other agreement contained in this Agreement or any other Loan Document
   (other than as provided in paragraphs (a) through (c) of this Section), and
   such default shall continue unremedied for a period of 30 days after notice
   to CC Operating from the Administrative Agent or the Required Lenders; or

          (e) Holdings, CC Operating or any of their respective Subsidiaries
   shall (i) default in making any payment of any principal of any Indebtedness
   (including any Guarantee Obligation, but excluding the Loans) on the
   scheduled or original due date with respect thereto (giving effect to any
   applicable grace periods); or (ii) default in making any payment of any
   interest on any such Indebtedness beyond the period of grace, if any,
   provided in the instrument or agreement under which such Indebtedness was
   created; or (iii) default in the observance or performance of any other
   agreement or condition relating to any such Indebtedness or contained in any
   instrument or agreement evidencing, securing or relating thereto, or any
   other event shall occur or condition exist, the effect of which default or
   other event or condition is to cause, or to permit the holder or beneficiary
   of such Indebtedness (or a trustee or agent on behalf of such holder or
   beneficiary) to cause, with the giving of notice if required, such
   Indebtedness to become due prior to its stated maturity or (in the case of
   any such Indebtedness constituting a Guarantee Obligation) to become payable;
   provided, that a default, event or condition described in clause (i), (ii) or
   (iii) of this paragraph (e) shall not at any time constitute an Event of
   Default unless, at such time, one or more defaults, events or conditions of
   the type described in clauses (i), (ii) and (iii) of this paragraph (e) shall
   have occurred and be continuing with respect to Indebtedness the outstanding
   principal amount of which exceeds in the aggregate $10,000,000; or

          (f) (i) Holdings, CC Operating or any of their respective Subsidiaries
   shall commence any case, proceeding or other action (A) under any existing or
   future law of any jurisdiction, domestic or foreign, relating to bankruptcy,
   insolvency, reorganization or relief of debtors, seeking to have an order for
   relief entered with respect to it, or seeking to adjudicate it a bankrupt or
   insolvent, or seeking reorganization, arrangement, adjustment, winding-up,
   liquidation, dissolution, composition or other relief with respect to it or
   its debts, or (B) seeking appointment of a receiver, trustee, custodian,
   conservator or other similar official for it or for all or any substantial
   part of its assets, or Holdings, CC Operating or any of their respective
   Subsidiaries shall make a general assignment for the benefit of its
   creditors; or (ii) there shall be commenced against Holdings, CC Operating or
   any of their respective Subsidiaries any case, proceeding or other action of
   a nature referred to in clause (i) above that (A) results in the entry of an
   order for relief or any such adjudication or appointment or (B) remains
   undismissed, undischarged or unbonded for a period of 60 days; or (iii) there
   shall be commenced against Holdings, CC Operating or any of their respective
   Subsidiaries any case, proceeding or other action seeking issuance of a
   warrant of attachment, execution, distraint or similar process against all or
   any substantial part of its assets that results in the entry of an order for
   any such relief that shall not have been vacated, discharged, or stayed or
   bonded pending appeal within 60 days from the entry thereof; or (iv)
   Holdings, CC Operating or any of their respective Subsidiaries shall take any
   action in furtherance of, or indicating its consent to, approval of, or
   acquiescence in, any of

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                                                                              61

   the acts set forth in clause (i), (ii), or (iii) above; or (v) Holdings, CC
   Operating or any of their respective Subsidiaries shall generally not, or
   shall be unable to, or shall admit in writing its inability to, pay its
   debts as they become due; or

          (g) (i) any Person shall engage in any "prohibited transaction" (as
   defined in Section 406 of ERISA or Section 4975 of the Code) involving any
   Plan, (ii) any "accumulated funding deficiency" (as defined in Section 302 of
   ERISA), whether or not waived, shall exist with respect to any Plan or any
   Lien in favor of the PBGC or a Plan shall arise on the assets of CC Operating
   or any Commonly Controlled Entity, (iii) a Reportable Event shall occur with
   respect to, or proceedings shall commence to have a trustee appointed, or a
   trustee shall be appointed pursuant to Section 4042(b) of ERISA, to
   administer or to terminate, any Single Employer Plan, which Reportable Event
   or commencement of proceedings or appointment of a trustee is reasonably
   likely to result in the termination of such Plan for purposes of Title IV of
   ERISA, (iv) any Single Employer Plan shall terminate for purposes of Title IV
   of ERISA, (v) CC Operating or any Commonly Controlled Entity shall incur any
   liability in connection with a withdrawal from, or the Insolvency or
   Reorganization of, a Multiemployer Plan or (vi) any other event or condition
   shall occur or exist with respect to a Plan; and in each case in clauses (i)
   through (vi) above, such event or condition, together with all other such
   events or conditions, if any, could, in the reasonable opinion of the
   Required Lenders, reasonably be expected to have a Material Adverse Effect;
   or

          (h) one or more judgments or decrees shall be entered against
   Holdings, CC Operating or any of their respective Subsidiaries involving in
   the aggregate a liability (to the extent not paid or fully covered by
   insurance as to which the relevant insurance company has acknowledged
   coverage) of $10,000,000 or more, and all such judgments or decrees shall not
   have been vacated, discharged, stayed or bonded pending appeal within 30 days
   from the entry thereof; or

          (i) any of the Security Documents shall cease, for any reason, to be
   in full force and effect, or any Loan Party or any Affiliate of any Loan
   Party shall so assert, or any Lien created by any of the Security Documents
   shall cease to be enforceable and of the same effect and priority purported
   to be created thereby; or

          (j) Crown Castle UK shall have failed to redeem all of its 9%
   Guaranteed Bonds due 2007 on or prior to the date that is 35 days after the
   Restatement Effective Date; or

          (k) a Change of Control shall occur;

          then, and in any such event, (A) if such event is an Event of Default
specified in clause (i) or (ii) of paragraph (f) above with respect to the
Borrower, automatically the Commitments shall immediately terminate and the
Loans hereunder (with accrued interest thereon) and all other amounts owing
under this Agreement and the other Loan Documents (including all amounts of L/C
Obligations, whether or not the beneficiaries of the then outstanding Letters of
Credit shall have presented the documents required thereunder) shall immediately
become due and payable, and (B) if such event is any other Event of Default,
either or both of the following actions may be taken: (i) with the consent of
the Required Lenders, the Administrative Agent may, or upon the request of the
Required Lenders, the Administrative Agent shall, by notice to the Borrower
declare the Revolving Commitments to be terminated forthwith, whereupon the
Revolving Commitments shall immediately terminate; and (ii) with the consent of
the Required Lenders, the Administrative Agent may, or upon the request of the
Required Lenders, the Administrative Agent shall, by notice to the Borrower,
declare the Loans hereunder (with accrued interest thereon) and all other
amounts owing under this Agreement and the other Loan Documents (including all
amounts of L/C Obligations, whether or not the beneficiaries of the then
outstanding Letters of Credit shall have presented the documents required
thereunder) to be due and payable forthwith, whereupon the same shall
immediately become due and payable. With respect to all

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                                                                              62

Letters of Credit with respect to which presentment for honor shall not have
occurred at the time of an acceleration pursuant to this paragraph, the Borrower
shall at such time deposit in a cash collateral account opened by the
Administrative Agent an amount equal to the aggregate then undrawn and unexpired
amount of such Letters of Credit. Amounts held in such cash collateral account
shall be applied by the Administrative Agent to the payment of drafts drawn
under such Letters of Credit, and the unused portion thereof after all such
Letters of Credit shall have expired or been fully drawn upon, if any, shall be
applied to repay other obligations of the Borrower hereunder and under the other
Loan Documents. After all such Letters of Credit shall have expired or been
fully drawn upon, all Reimbursement Obligations shall have been satisfied and
all other obligations of the Borrower hereunder and under the other Loan
Documents shall have been paid in full, the balance, if any, in such cash
collateral account shall be returned to the Borrower (or such other Person as
may be lawfully entitled thereto). Except as expressly provided above in this
Section, presentment, demand, protest and all other notices of any kind are
hereby expressly waived by the Borrower.

                       SECTION 9. THE ADMINISTRATIVE AGENT

          9.1   Appointment. Each Lender hereby irrevocably designates and
appoints the Administrative Agent as the agent of such Lender under this
Agreement and the other Loan Documents, and each such Lender irrevocably
authorizes the Administrative Agent, in such capacity, to take such action on
its behalf under the provisions of this Agreement and the other Loan Documents
and to exercise such powers and perform such duties as are expressly delegated
to the Administrative Agent by the terms of this Agreement and the other Loan
Documents, together with such other powers as are reasonably incidental thereto.
Notwithstanding any provision to the contrary elsewhere in this Agreement, the
Administrative Agent shall not have any duties or responsibilities, except those
expressly set forth herein, or any fiduciary relationship with any Lender, and
no implied covenants, functions, responsibilities, duties, obligations or
liabilities shall be read into this Agreement or any other Loan Document or
otherwise exist against the Administrative Agent.

          9.2   Delegation of Duties. The Administrative Agent may execute any
of its duties under this Agreement and the other Loan Documents by or through
agents or attorneys-in-fact and shall be entitled to advice of counsel
concerning all matters pertaining to such duties. The Administrative Agent shall
not be responsible for the negligence or misconduct of the Administrative Agent
or attorneys in-fact selected by it with reasonable care.

          9.3   Exculpatory Provisions. Neither the Administrative Agent nor any
of its officers, directors, employees, agents, attorneys-in-fact or affiliates
shall be (i) liable for any action lawfully taken or omitted to be taken by it
or such Person under or in connection with this Agreement or any other Loan
Document (except to the extent that any of the foregoing are found by a final
and nonappealable decision of a court of competent jurisdiction to have resulted
from its or such Person's own gross negligence or willful misconduct) or (ii)
responsible in any manner to any of the Lenders for any recitals, statements,
representations or warranties made by any Loan Party or any officer thereof
contained in this Agreement or any other Loan Document or in any certificate,
report, statement or other document referred to or provided for in, or received
by the Administrative Agent under or in connection with, this Agreement or any
other Loan Document or for the value, validity, effectiveness, genuineness,
enforceability or sufficiency of this Agreement or any other Loan Document or
for any failure of any Loan Party a party thereto to perform its obligations
hereunder or thereunder. The Administrative Agent shall not be under any
obligation to any Lender to ascertain or to inquire as to the observance or
performance of any of the agreements contained in, or conditions of, this
Agreement or any other Loan Document, or to inspect the properties, books or
records of any Loan Party.

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                                                                              63

          9.4   Reliance by Administrative Agent. The Administrative Agent shall
be entitled to rely, and shall be fully protected in relying, upon any
instrument, writing, resolution, notice, consent, certificate, affidavit,
letter, telecopy, telex or teletype message, statement, order or other document
or conversation believed by it to be genuine and correct and to have been
signed, sent or made by the proper Person or Persons and upon advice and
statements of legal counsel (including counsel to Holdings or the Borrower),
independent accountants and other experts selected by the Administrative Agent.
The Administrative Agent may deem and treat the payee of any promissory note
evidencing Loans as the owner thereof for all purposes unless a written notice
of assignment, negotiation or transfer thereof shall have been filed with the
Administrative Agent. The Administrative Agent shall be fully justified in
failing or refusing to take any action under this Agreement or any other Loan
Document unless it shall first receive such advice or concurrence of the
Required Lenders (or, if so specified by this Agreement, all Lenders) as it
deems appropriate or it shall first be indemnified to its satisfaction by the
Lenders against any and all liability and expense that may be incurred by it by
reason of taking or continuing to take any such action. The Administrative Agent
shall in all cases be fully protected in acting, or in refraining from acting,
under this Agreement and the other Loan Documents in accordance with a request
of the Required Lenders (or, if so specified by this Agreement, all Lenders),
and such request and any action taken or failure to act pursuant thereto shall
be binding upon all the Lenders and all future holders of the Loans.

          9.5   Notice of Default. The Administrative Agent shall not be deemed
to have knowledge or notice of the occurrence of any Default or Event of Default
hereunder unless the Administrative Agent has received notice from a Lender,
Holdings or the Borrower referring to this Agreement, describing such Default or
Event of Default and stating that such notice is a "notice of default". In the
event that the Administrative Agent receives such a notice, the Administrative
Agent shall give notice thereof to the Lenders. The Administrative Agent shall
take such action with respect to such Default or Event of Default as shall be
reasonably directed by the Required Lenders (or, if so specified by this
Agreement, all Lenders); provided that unless and until the Administrative Agent
shall have received such directions, the Administrative Agent may (but shall not
be obligated to) take such action, or refrain from taking such action, with
respect to such Default or Event of Default as it shall deem advisable in the
best interests of the Lenders.

          9.6   Non-Reliance on Administrative Agent and Other Lenders. Each
Lender expressly acknowledges that neither the Administrative Agent nor any of
its officers, directors, employees, agents, attorneys-in-fact or affiliates have
made any representations or warranties to it and that no act by the
Administrative Agent hereafter taken, including any review of the affairs of a
Loan Party or any affiliate of a Loan Party, shall be deemed to constitute any
representation or warranty by the Administrative Agent to any Lender. Each
Lender represents to the Administrative Agent that it has, independently and
without reliance upon the Administrative Agent or any other Lender, and based on
such documents and information as it has deemed appropriate, made its own
appraisal of and investigation into the business, operations, property,
financial and other condition and creditworthiness of the Loan Parties and their
affiliates and made its own decision to make its Loans hereunder and enter into
this Agreement. Each Lender also represents that it will, independently and
without reliance upon the Administrative Agent or any other Lender, and based on
such documents and information as it shall deem appropriate at the time,
continue to make its own credit analysis, appraisals and decisions in taking or
not taking action under this Agreement and the other Loan Documents, and to make
such investigation as it deems necessary to inform itself as to the business,
operations, property, financial and other condition and creditworthiness of the
Loan Parties and their affiliates. Except for notices, reports and other
documents expressly required to be furnished to the Lenders by the
Administrative Agent hereunder, the Administrative Agent shall not have any duty
or responsibility to provide any Lender with any credit or other information
concerning the business, operations, property, condition (financial or
otherwise), prospects or creditworthiness of any Loan Party or any affiliate of
a Loan Party that may come into the possession of the Administrative Agent or
any of its officers, directors, employees, agents, attorneys-in-fact or
affiliates.

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                                                                              64

          9.7   Indemnification. The Lenders agree to indemnify the
Administrative Agent in its capacity as such (to the extent not reimbursed by
Holdings or the Borrower and without limiting the obligation of Holdings or the
Borrower to do so), ratably according to their respective Aggregate Exposure
Percentages in effect on the date on which indemnification is sought under this
Section (or, if indemnification is sought after the date upon which the
Commitments shall have terminated and the Loans shall have been paid in full,
ratably in accordance with such Aggregate Exposure Percentages immediately prior
to such date), from and against any and all liabilities, obligations, losses,
damages, penalties, actions, judgments, suits, costs, expenses or disbursements
of any kind whatsoever that may at any time (whether before or after the payment
of the Loans) be imposed on, incurred by or asserted against the Administrative
Agent in any way relating to or arising out of, the Commitments, this Agreement,
any of the other Loan Documents or any documents contemplated by or referred to
herein or therein or the transactions contemplated hereby or thereby or any
action taken or omitted by the Administrative Agent under or in connection with
any of the foregoing; provided that no Lender shall be liable for the payment of
any portion of such liabilities, obligations, losses, damages, penalties,
actions, judgments, suits, costs, expenses or disbursements that are found by a
final and nonappealable decision of a court of competent jurisdiction to have
resulted from the Administrative Agent's gross negligence or willful misconduct.
The agreements in this Section shall survive the payment of the Loans and all
other amounts payable hereunder.

          9.8   Administrative Agent in Its Individual Capacity. The
Administrative Agent and its affiliates may make loans to, accept deposits from
and generally engage in any kind of business with any Loan Party as though the
Administrative Agent were not the Administrative Agent. With respect to its
Loans made or renewed by it and with respect to any Letter of Credit issued or
participated in by it, the Administrative Agent shall have the same rights and
powers under this Agreement and the other Loan Documents as any Lender and may
exercise the same as though it were not the Administrative Agent, and the terms
"Lender" and "Lenders" shall include the Administrative Agent in its individual
capacity.

          9.9   Successor Administrative Agent. The Administrative Agent may
resign as Administrative Agent upon 10 days' notice to the Lenders and the
Borrower. If the Administrative Agent shall resign as Administrative Agent under
this Agreement and the other Loan Documents, then the Required Lenders shall
appoint from among the Lenders a successor agent for the Lenders, which
successor agent shall (unless an Event of Default under Section 8(a) or Section
8(f) with respect to the Borrower shall have occurred and be continuing) be
subject to approval by the Borrower (which approval shall not be unreasonably
withheld or delayed), whereupon such successor agent shall succeed to the
rights, powers and duties of the Administrative Agent, and the term
"Administrative Agent" shall mean such successor agent effective upon such
appointment and approval, and the former Administrative Agent's rights, powers
and duties as Administrative Agent shall be terminated, without any other or
further act or deed on the part of such former Administrative Agent or any of
the parties to this Agreement or any holders of the Loans. If no successor agent
has accepted appointment as Administrative Agent by the date that is 10 days
following a retiring Administrative Agent's notice of resignation, the retiring
Administrative Agent's resignation shall nevertheless thereupon become effective
and the Lenders shall assume and perform all of the duties of the Administrative
Agent hereunder until such time, if any, as the Required Lenders appoint a
successor agent as provided for above. After any retiring Administrative Agent's
resignation as Administrative Agent, the provisions of this Section 9 shall
inure to its benefit as to any actions taken or omitted to be taken by it while
it was Administrative Agent under this Agreement and the other Loan Documents.

                            SECTION 10. MISCELLANEOUS

          10.1  Amendments and Waivers. Neither this Agreement, any other Loan
Document, nor any terms hereof or thereof may be amended, supplemented or
modified except in accordance with

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                                                                              65

the provisions of this Section 10.1. The Required Lenders and each Loan Party
party to the relevant Loan Document may, or, with the written consent of the
Required Lenders, the Administrative Agent and each Loan Party party to the
relevant Loan Document may, from time to time, (a) enter into written
amendments, supplements or modifications hereto and to the other Loan Documents
for the purpose of adding any provisions to this Agreement or the other Loan
Documents or changing in any manner the rights of the Lenders or of the Loan
Parties hereunder or thereunder or (b) waive, on such terms and conditions as
the Required Lenders or the Administrative Agent, as the case may be, may
specify in such instrument, any of the requirements of this Agreement or the
other Loan Documents or any Default or Event of Default and its consequences;
provided, however, that no such waiver and no such amendment, supplement or
modification shall (i) forgive or reduce the principal amount or extend the
final scheduled date of maturity of any Loan, extend the scheduled date of any
amortization payment in respect of any Term Loan, extend the scheduled date of
any reduction of the Revolving Commitments, reduce the stated rate of any
interest or fee payable hereunder (except (x) in connection with the waiver of
applicability of any post-default increase in interest rates, which waiver shall
be effective with the consent of the Majority Facility Lenders of each adversely
affected Facility and (y) that any amendment or modification of defined terms
used in the financial covenants in this Agreement shall not constitute a
reduction in the rate of interest or fees for purposes of this clause (i)) or
extend the scheduled date of any payment thereof, or increase the amount or
extend the expiration date of any Lender's Commitment, in each case without the
written consent of each Lender directly affected thereby; (ii) eliminate or
reduce the voting rights of any Lender under this Section 10.1 without the
written consent of such Lender; (iii) reduce any percentage specified in the
definition of Required Lenders, consent to the assignment or transfer by CC
Operating of any of its rights and obligations under this Agreement and the
other Loan Documents, release all or substantially all of the Collateral or
release all or substantially all of the Subsidiary Guarantors from their
obligations under the Guarantee and Collateral Agreement, in each case without
the written consent of all Lenders; (iv) amend, modify or waive any condition
precedent to any extension of credit under any Facility set forth in Section 5.2
(including in connection with any waiver of an existing Default or Event of
Default) without the written consent of the Majority Facility Lenders with
respect to such Facility; provided that a waiver of any such condition precedent
relating to an existing Default or Event of Default under Section 8(a) shall
require the written consent of all Lenders; (v) reduce the amount of Net Cash
Proceeds or Excess Cash Flow required to be applied to prepay Loans under this
Agreement without the written consent of the Majority Facility Lenders with
respect to each adversely affected Facility; (vi) reduce the percentage
specified in the definition of Majority Facility Lenders with respect to any
Facility without the written consent of all Lenders under such Facility; (vii)
amend, modify or waive any provision of Section 9 without the written consent of
the Administrative Agent and any other Agent affected thereby; (viii) amend,
modify or waive any provision of Section 2.4 or 2.5 without the written consent
of the Swingline Lender; (ix) amend, modify or waive any provision of Section 3
without the written consent of each affected Issuing Lender or (x) amend, modify
or waive any provision of Section 2.15(a), (b) or (c) without the written
consent of each Lender directly affected thereby. Any such waiver and any such
amendment, supplement or modification shall apply equally to each of the Lenders
and shall be binding upon the Loan Parties, the Lenders, the Administrative
Agent and all future holders of the Loans. In the case of any waiver, the Loan
Parties, the Lenders and the Administrative Agent shall be restored to their
former position and rights hereunder and under the other Loan Documents, and any
Default or Event of Default waived shall be deemed to be cured and not
continuing; but no such waiver shall extend to any subsequent or other Default
or Event of Default, or impair any right consequent thereon.

          For the avoidance of doubt, this Agreement may be amended (or amended
and restated) with the written consent of the Required Lenders, the
Administrative Agent and the Borrower (a) to add one or more additional credit
facilities to this Agreement and to permit the extensions of credit from time to
time outstanding thereunder and the accrued interest and fees in respect thereof
(collectively, the "Additional Extensions of Credit") to share ratably in the
benefits of this Agreement and the other Loan Documents with the Term Loans and
Revolving Extensions of Credit and the accrued interest and fees in

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                                                                              66

respect thereof and (b) to include appropriately the Lenders holding such credit
facilities in any determination of the Required Lenders and Majority Facility
Lenders; provided, that no such amendment shall permit the Additional Extensions
of Credit to share ratably with or with preference to the Term Loans in the
application of mandatory prepayments without the consent of the Majority
Facility Lenders with respect to each Facility (other than the Revolving
Facility) or otherwise to share ratably with or with preference to the Revolving
Extensions of Credit without the consent of the Majority Facility Lenders with
respect to the Revolving Facility.

          10.2  Notices. All notices, requests and demands to or upon the
respective parties hereto to be effective shall be in writing (including by
telecopy), and, unless otherwise expressly provided herein, shall be deemed to
have been duly given or made when delivered, or three Business Days after being
deposited in the mail, postage prepaid, or, in the case of telecopy notice, when
received, addressed as follows in the case of Holdings, the Borrower and the
Administrative Agent, and as set forth in an administrative questionnaire
delivered to the Administrative Agent in the case of the Lenders, or to such
other address as may be hereafter notified by the respective parties hereto:

     Holdings:                   Crown Castle International Corp.
                                 510 Bering Drive, Suite 500
                                 Houston, Texas  77057
                                 Attention: Treasurer and General Counsel
                                 Telecopy:  (713) 570-3150
                                 Telephone:  (713) 570-3000

     CC Operating:               Crown Castle Operating Company
                                 510 Bering Drive, Suite 500
                                 Houston, Texas  77057
                                 Attention: Treasurer and General Counsel
                                 Telecopy:  (713) 570-3150
                                 Telephone:  (713) 570-3000

     CC Puerto Rico              Crown Castle International Corp. de Puerto Rico
                                 510 Bering Drive, Suite 500
                                 Houston, Texas  77057
                                 Attention: Treasurer and General Counsel
                                 Telecopy:  (713) 570-3150
                                 Telephone:  (713) 570-3000

     The Administrative Agent:   JPMorgan Chase Bank
                                 270 Park Avenue
                                 New York, New York  10017
                                 Attention: Joan Fitzgibbon
                                 Telecopy:  (212) 270-4584
                                 Telephone:  (212) 270-1786

provided that any notice, request or demand to or upon the Administrative Agent
or the Lenders shall not be effective until received.

          10.3  No Waiver; Cumulative Remedies-. No failure to exercise and no
delay in exercising, on the part of the Administrative Agent or any Lender, any
right, remedy, power or privilege hereunder or under the other Loan Documents
shall operate as a waiver thereof; nor shall any single or partial exercise of
any right, remedy, power or privilege hereunder preclude any other or further
exercise thereof or the exercise of any other right, remedy, power or privilege.
The rights, remedies, powers and

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                                                                              67

privileges herein provided are cumulative and not exclusive of any rights,
remedies, powers and privileges provided by law.

          10.4  Survival of Representations and Warranties. All representations
and warranties made hereunder, in the other Loan Documents and in any document,
certificate or statement delivered pursuant hereto or in connection herewith
shall survive the execution and delivery of this Agreement and the making of the
Loans and other extensions of credit hereunder.

          10.5  Payment of Expenses and Taxes. The Borrower agrees (a) to pay or
reimburse the Administrative Agent for all its out-of-pocket costs and expenses
incurred in connection with the development, preparation and execution of, and
any amendment, supplement or modification to, this Agreement and the other Loan
Documents and any other documents prepared in connection herewith or therewith,
and the consummation and administration of the transactions contemplated hereby
and thereby, including the reasonable fees and disbursements of counsel to the
Administrative Agent and filing and recording fees and expenses, with statements
with respect to the foregoing to be submitted to the Borrower prior to the
Restatement Effective Date (in the case of amounts to be paid on the Restatement
Effective Date) and from time to time thereafter on a quarterly basis or such
other periodic basis as the Administrative Agent shall deem appropriate, (b) to
pay or reimburse each Lender and the Administrative Agent for all its costs and
expenses incurred in connection with the enforcement or preservation of any
rights under this Agreement, the other Loan Documents and any such other
documents, including the fees and disbursements of counsel to each Lender and of
counsel to the Administrative Agent, (c) to pay, indemnify, and hold each Lender
and the Administrative Agent harmless from, any and all recording and filing
fees and any and all liabilities with respect to, or resulting from any delay in
paying, stamp, excise and other taxes, if any, that may be payable or determined
to be payable in connection with the execution and delivery of, or consummation
or administration of any of the transactions contemplated by, or any amendment,
supplement or modification of, or any waiver or consent under or in respect of,
this Agreement, the other Loan Documents and any such other documents, and (d)
to pay, indemnify, and hold each Lender and the Administrative Agent and their
respective officers, directors, employees, affiliates, agents, trustees and
investment advisers and controlling persons (each, an "Indemnitee") harmless
from and against any and all other liabilities, obligations, losses, damages,
penalties, actions, judgments, suits, costs, expenses or disbursements of any
kind or nature whatsoever with respect to the execution, delivery, enforcement,
performance and administration of this Agreement, the other Loan Documents and
any such other documents, including any of the foregoing relating to the use of
proceeds of the Loans or the violation of, noncompliance with or liability
under, any Environmental Law applicable to the operations of Holdings, CC
Operating any of its Subsidiaries or any of the Properties and the reasonable
fees and expenses of legal counsel in connection with claims, actions or
proceedings by any Indemnitee against any Loan Party under any Loan Document
(all the foregoing in this clause (d), collectively, the "Indemnified
Liabilities"), provided, that the Borrower shall have no obligation hereunder to
any Indemnitee with respect to Indemnified Liabilities to the extent such
Indemnified Liabilities are found by a final and nonappealable decision of a
court of competent jurisdiction to have resulted from the gross negligence or
willful misconduct of such Indemnitee. Without limiting the foregoing, and to
the extent permitted by applicable law, the Borrower agrees not to assert and to
cause its Subsidiaries not to assert, and hereby waives and agrees to cause its
Subsidiaries to waive, all rights for contribution or any other rights of
recovery with respect to all claims, demands, penalties, fines, liabilities,
settlements, damages, costs and expenses of whatever kind or nature, under or
related to Environmental Laws, that any of them might have by statute or
otherwise against any Indemnitee. All amounts due under this Section 10.5 shall
be payable not later than 10 days after written demand therefor. Statements
payable by the Borrower pursuant to this Section 10.5 shall be submitted to
Treasurer and General Counsel (Telephone No. (713) 570-3000) (Telecopy No. (713)
570-3150), at the address of the Borrower set forth in Section 10.2, or to such
other Person or address as may be hereafter designated by the Borrower in a
written notice to the Administrative Agent. The agreements in this Section 10.5
shall survive repayment of the Loans and all other amounts payable hereunder.

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                                                                              68

          It is understood and agreed that, to the extent not precluded by a
conflict of interest, each Indemnitee shall endeavor to work cooperatively with
the Borrower with a view to minimizing the legal and other expenses associated
with any defense and any potential settlement or judgment. To the extent
reasonably practicable and not disadvantageous to any Indemnitee, it is
anticipated that a single counsel may be used. Settlement of any claim or
litigation involving any material indemnified amount will require the approval
of the Borrower (not to be unreasonably withheld).

          10.6  Successors and Assigns; Participations and Assignments. (a) This
Agreement shall be binding upon and inure to the benefit of Holdings, the
Borrower, the Lenders, the Administrative Agent, all future holders of the Loans
and their respective successors and assigns, except that CC Operating may not
assign or transfer any of its rights or obligations under this Agreement without
the prior written consent of each Lender.

          (b)(i) Subject to the conditions set forth in paragraph (b)(ii) below,
any Lender may assign to one or more assignees (each, an "Assignee") all or a
portion of its rights and obligations under this Agreement (including all or a
portion of its Revolving Commitment and the Loans at the time owing to it) with
the prior written consent (such consent not to be unreasonably withheld) of:

          (A) the Borrower, provided that no consent of the Borrower shall be
     required for an assignment to a Lender, an affiliate of a Lender, an
     Approved Fund (as defined below) or, if an Event of Default under Section
     8(a) or (f) has occurred and is continuing, any other Person; and

          (B) the Administrative Agent, provided that no consent of the
     Administrative Agent shall be required for an assignment of (x) any
     Revolving Commitment to an assignee that is a Lender with a Revolving
     Commitment immediately prior to giving effect to such assignment or (y) all
     or any portion of a Term Loan to a Lender, an Affiliate of a Lender or an
     Approved Fund.

          (ii) Assignments shall be subject to the following additional
conditions:

          (A) except in the case of an assignment to a Lender, an affiliate of a
     Lender or an Approved Fund or an assignment of the entire remaining amount
     of the assigning Lender's Revolving Commitment or Loans under any Facility,
     the amount of the Revolving Commitment or Loans of the assigning Lender
     subject to each such assignment (determined as of the date the Assignment
     and Assumption with respect to such assignment is delivered to the
     Administrative Agent) shall not be less than $5,000,000 (or, in the case of
     the Tranche B Term Facility, $1,000,000) unless each of the Borrower and
     the Administrative Agent otherwise consent, provided that (1) no such
     consent of the Borrower shall be required if an Event of Default under
     Section 8(a) or (f) has occurred and is continuing and (2) such amounts
     shall be aggregated in respect of each Lender and its affiliates or
     Approved Funds, if any;

          (B) the parties to each assignment shall execute and deliver to the
     Administrative Agent an Assignment and Assumption, together with a
     processing and recordation fee of $3,500; and

          (C) the Assignee, if it shall not be a Lender, shall deliver to the
     Administrative Agent an administrative questionnaire.

          For the purposes of this Section 10.6, "Approved Fund" means any
Person (other than a natural person) that is engaged in making, purchasing,
holding or investing in bank loans and similar extensions of credit in the
ordinary course of its business and that is administered or managed by (a) a
Lender, (b) an Affiliate of a Lender or (c) an entity or an Affiliate of an
entity that administers or manages a Lender.

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                                                                              69

          (iii) Subject to acceptance and recording thereof pursuant to
paragraph (b)(iv) below, from and after the effective date specified in each
Assignment and Assumption the Assignee thereunder shall be a party hereto and,
to the extent of the interest assigned by such Assignment and Assumption, have
the rights and obligations of a Lender under this Agreement, and the assigning
Lender thereunder shall, to the extent of the interest assigned by such
Assignment and Assumption, be released from its obligations under this Agreement
(and, in the case of an Assignment and Assumption covering all of the assigning
Lender's rights and obligations under this Agreement, such Lender shall cease to
be a party hereto but shall continue to be entitled to the benefits of Sections
2.16, 2.17, 2.18 and 10.5). Any assignment or transfer by a Lender of rights or
obligations under this Agreement that does not comply with this Section 10.6
shall be treated for purposes of this Agreement as a sale by such Lender of a
participation in such rights and obligations in accordance with paragraph (c) of
this Section.

          (iv) The Administrative Agent, acting for this purpose as an agent of
the Borrower, shall maintain at one of its offices a copy of each Assignment and
Assumption delivered to it and a register for the recordation of the names and
addresses of the Lenders, and the Commitments of, and principal amount of the
Loans and L/C Obligations owing to, each Lender pursuant to the terms hereof
from time to time (the "Register"). The entries in the Register shall be
conclusive, and the Borrower, the Administrative Agent, the Issuing Lender and
the Lenders may treat each Person whose name is recorded in the Register
pursuant to the terms hereof as a Lender hereunder for all purposes of this
Agreement, notwithstanding notice to the contrary.

          (v) Upon its receipt of a duly completed Assignment and Assumption
executed by an assigning Lender and an Assignee, the Assignee's completed
administrative questionnaire (unless the Assignee shall already be a Lender
hereunder), the processing and recordation fee referred to in paragraph (b) of
this Section and any written consent to such assignment required by paragraph
(b) of this Section, the Administrative Agent shall accept such Assignment and
Assumption and record the information contained therein in the Register. No
assignment shall be effective for purposes of this Agreement unless it has been
recorded in the Register as provided in this paragraph.

          (c)(i) Any Lender may, without the consent of the Borrower or the
Administrative Agent, sell participations to one or more banks or other entities
(a "Participant") in all or a portion of such Lender's rights and obligations
under this Agreement (including all or a portion of its Commitments and the
Loans owing to it); provided that (A) such Lender's obligations under this
Agreement shall remain unchanged, (B) such Lender shall remain solely
responsible to the other parties hereto for the performance of such obligations
and (C) the Borrower, the Administrative Agent, the Issuing Lender and the other
Lenders shall continue to deal solely and directly with such Lender in
connection with such Lender's rights and obligations under this Agreement. Any
agreement pursuant to which a Lender sells such a participation shall provide
that such Lender shall retain the sole right to enforce this Agreement and to
approve any amendment, modification or waiver of any provision of this
Agreement; provided that such agreement may provide that such Lender will not,
without the consent of the Participant, agree to any amendment, modification or
waiver that (1) requires the consent of each Lender directly affected thereby
pursuant to the proviso to the second sentence of Section 10.1 and (2) directly
affects such Participant. Subject to paragraph (c)(ii) of this Section, the
Borrower agrees that each Participant shall be entitled to the benefits of
Sections 2.16, 2.17 and 2.18 to the same extent as if it were a Lender and had
acquired its interest by assignment pursuant to paragraph (b) of this Section.
To the extent permitted by law, each Participant also shall be entitled to the
benefits of Section 10.7(b) as though it were a Lender, provided such
Participant shall be subject to Section 10.7(a) as though it were a Lender.

          (ii) A Participant shall not be entitled to receive any greater
payment under Section 2.16 or 2.17 than the applicable Lender would have been
entitled to receive with respect to the participation sold to such Participant,
unless the sale of the participation to such Participant is made with the

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                                                                              70

Borrower's prior written consent. Any Participant that is a Non-U.S. Lender
shall not be entitled to the benefits of Section 2.17 unless such Participant
complies with Section 2.17(d).

          (d) Any Lender may at any time pledge or assign a security interest in
all or any portion of its rights under this Agreement to secure obligations of
such Lender, including any pledge or assignment to secure obligations to a
Federal Reserve Bank, and this Section shall not apply to any such pledge or
assignment of a security interest; provided that no such pledge or assignment of
a security interest shall release a Lender from any of its obligations hereunder
or substitute any such pledgee or Assignee for such Lender as a party hereto.

          (e) The Borrower, upon receipt of written notice from the relevant
Lender, agrees to issue promissory notes to any Lender requiring such notes to
facilitate transactions of the type described in paragraph (d) above.

          (f) Notwithstanding the foregoing, any Conduit Lender may assign any
or all of the Loans it may have funded hereunder to its designating Lender
without the consent of the Borrower or the Administrative Agent and without
regard to the limitations set forth in Section 10.6(b). Each of Holdings, the
Borrower, each Lender and the Administrative Agent hereby confirms that it will
not institute against a Conduit Lender or join any other Person in instituting
against a Conduit Lender any bankruptcy, reorganization, arrangement, insolvency
or liquidation proceeding under any state bankruptcy or similar law, for one
year and one day after the payment in full of the latest maturing commercial
paper note issued by such Conduit Lender; provided, however, that each Lender
designating any Conduit Lender hereby agrees to indemnify, save and hold
harmless each other party hereto for any loss, cost, damage or expense arising
out of its inability to institute such a proceeding against such Conduit Lender
during such period of forbearance.

          10.7  Adjustments; Set-off. (a) Except to the extent that this
Agreement expressly provides for payments to be allocated to a particular Lender
or to the Lenders under a particular Facility, if any Lender (a "Benefitted
Lender") shall, at any time after the Loans and other amounts payable hereunder
shall immediately become due and payable pursuant to Section 8, receive any
payment of all or part of the Obligations owing to it, or receive any collateral
in respect thereof (whether voluntarily or involuntarily, by set-off, pursuant
to events or proceedings of the nature referred to in Section 8(f), or
otherwise), in a greater proportion than any such payment to or collateral
received by any other Lender, if any, in respect of the Obligations owing to
such other Lender, such Benefitted Lender shall purchase for cash from the other
Lenders a participating interest in such portion of the Obligations owing to
each such other Lender, or shall provide such other Lenders with the benefits of
any such collateral, as shall be necessary to cause such Benefitted Lender to
share the excess payment or benefits of such collateral ratably with each of the
Lenders; provided, however, that if all or any portion of such excess payment or
benefits is thereafter recovered from such Benefitted Lender, such purchase
shall be rescinded, and the purchase price and benefits returned, to the extent
of such recovery, but without interest.

          (b) In addition to any rights and remedies of the Lenders provided by
law, each Lender shall have the right, without prior notice to Holdings or the
Borrower, any such notice being expressly waived by Holdings and the Borrower to
the extent permitted by applicable law, upon any amount becoming due and payable
by Holdings or the Borrower hereunder (whether at the stated maturity, by
acceleration or otherwise), to set off and appropriate and apply against such
amount any and all deposits (general or special, time or demand, provisional or
final), in any currency, and any other credits, indebtedness or claims, in any
currency, in each case whether direct or indirect, absolute or contingent,
matured or unmatured, at any time held or owing by such Lender or any branch or
agency thereof to or for the credit or the account of Holdings or the Borrower,
as the case may be. Each Lender agrees promptly to notify the Borrower and the
Administrative Agent after any such setoff and application made

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                                                                              71

by such Lender, provided that the failure to give such notice shall not affect
the validity of such setoff and application.

          10.8  Counterparts. This Agreement may be executed by one or more of
the parties to this Agreement on any number of separate counterparts, and all of
said counterparts taken together shall be deemed to constitute one and the same
instrument. Delivery of an executed signature page of this Agreement by
facsimile transmission shall be effective as delivery of a manually executed
counterpart hereof. A set of the copies of this Agreement signed by all the
parties shall be lodged with the Borrower and the Administrative Agent.

          10.9  Severability. Any provision of this Agreement that is prohibited
or unenforceable in any jurisdiction shall, as to such jurisdiction, be
ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

          10.10 Integration. This Agreement and the other Loan Documents
represent the entire agreement of Holdings, the Borrower, the Administrative
Agent and the Lenders with respect to the subject matter hereof and thereof, and
there are no promises, undertakings, representations or warranties by the
Administrative Agent or any Lender relative to the subject matter hereof not
expressly set forth or referred to herein or in the other Loan Documents.

          10.11 GOVERNING LAW. THIS AGREEMENT AND THE RIGHTS AND OBLIGATIONS OF
THE PARTIES UNDER THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED AND
INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK.

          10.12 Submission To Jurisdiction; Waivers. Each of Holdings and the
Borrower hereby irrevocably and unconditionally:

          (a) submits for itself and its property in any legal action or
   proceeding relating to this Agreement and the other Loan Documents to which
   it is a party, or for recognition and enforcement of any judgment in respect
   thereof, to the non-exclusive general jurisdiction of the courts of the State
   of New York, the courts of the United States for the Southern District of New
   York, and appellate courts from any thereof;

          (b) consents that any such action or proceeding may be brought in such
   courts and waives any objection that it may now or hereafter have to the
   venue of any such action or proceeding in any such court or that such action
   or proceeding was brought in an inconvenient court and agrees not to plead or
   claim the same;

          (c) agrees that service of process in any such action or proceeding
   may be effected by mailing a copy thereof by registered or certified mail (or
   any substantially similar form of mail), postage prepaid, to Holdings or the
   Borrower, as the case may be at its address set forth in Section 10.2 or at
   such other address of which the Administrative Agent shall have been notified
   pursuant thereto;

          (d) agrees that nothing herein shall affect the right to effect
   service of process in any other manner permitted by law or shall limit the
   right to sue in any other jurisdiction; and

          (e) waives, to the maximum extent not prohibited by law, any right it
   may have to claim or recover in any legal action or proceeding referred to in
   this Section any special, exemplary, punitive or consequential damages.

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                                                                              72

          10.13 Acknowledgements. Each of Holdings and the Borrower hereby
acknowledges that:

          (a) it has been advised by counsel in the negotiation, execution and
   delivery of this Agreement and the other Loan Documents;

          (b) neither the Administrative Agent nor any Lender has any fiduciary
   relationship with or duty to Holdings or the Borrower arising out of or in
   connection with this Agreement or any of the other Loan Documents, and the
   relationship between Administrative Agent and Lenders, on one hand, and
   Holdings and the Borrower, on the other hand, in connection herewith or
   therewith is solely that of debtor and creditor; and

          (c) no joint venture is created hereby or by the other Loan Documents
   or otherwise exists by virtue of the transactions contemplated hereby among
   the Lenders or among Holdings, the Borrower and the Lenders.

          10.14 Releases of Guarantees and Liens. (a) Notwithstanding anything
to the contrary contained herein or in any other Loan Document, the
Administrative Agent is hereby irrevocably authorized by each Lender (without
requirement of notice to or consent of any Lender except as expressly required
by Section 10.1) to take any action requested by CC Operating having the effect
of releasing any Collateral or Guarantee Obligations (i) to the extent necessary
to permit consummation of any transaction not prohibited by any Loan Document or
that has been consented to in accordance with Section 10.1 or (ii) under the
circumstances described in paragraph (b) below.

          (b) At such time as the Loans, the Reimbursement Obligations and the
other obligations under the Loan Documents (other than obligations under or in
respect of Hedge Agreements) shall have been paid in full, the Commitments have
been terminated and no Letters of Credit shall be outstanding, the Collateral
shall be released from the Liens created by the Security Documents, and the
Security Documents and all obligations (other than those expressly stated to
survive such termination) of the Administrative Agent and each Loan Party under
the Security Documents shall terminate, all without delivery of any instrument
or performance of any act by any Person.

          10.15 Confidentiality. (a) Each of the Administrative Agent and each
Lender agrees to keep confidential all non-public information provided to it by
any Loan Party pursuant to this Agreement that is designated by such Loan Party
as confidential; provided that nothing herein shall prevent the Administrative
Agent or any Lender from disclosing any such information (a) to the
Administrative Agent, any other Lender, any affiliate of any Lender or any
Approved Fund, (b) to any (i) actual or prospective Transferee, (ii) Hedge
Agreement counterparty or (iii) direct or indirect contractual counterparty in
swap agreements (or such contractual counterparty's professional advisor), in
each case that agrees to comply with the provisions of this Section, (c) to its
employees, directors, agents, attorneys, accountants and other professional
advisors or those of any of its affiliates, (d) upon the request or demand of
any Governmental Authority, (e) in response to any order of any court or other
Governmental Authority or as may otherwise be required pursuant to any
Requirement of Law, (f) if requested or required to do so in connection with any
litigation or similar proceeding, (g) that has been publicly disclosed, (h) to
the National Association of Insurance Commissioners or any similar organization
or any nationally recognized rating agency that requires access to information
about a Lender's investment portfolio in connection with ratings issued with
respect to such Lender, or (i) in connection with the exercise of any remedy
hereunder or under any other Loan Document.

          (b) Notwithstanding anything herein to the contrary, each party hereto
(and any employee, representative or other agent of each party hereto) may
disclose to any and all persons, without limitation of any kind, the U.S.
federal income tax treatment and the U.S. federal income tax structure of

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                                                                              73

the transactions contemplated hereby and all materials of any kind (including
opinions or other tax analyses) that are provided to it relating to such tax
treatment and tax structure; provided that no disclosure of any information
relating to such tax treatment or tax structure may be made to the extent
nondisclosure is reasonably necessary in order to comply with applicable
securities laws.

          10.16 CC Operating as Agent for CC Puerto Rico. CC Puerto Rico hereby
irrevocably appoints CC Operating as its agent for the purpose of any notices,
requests or consents that are delivered, made or given by or to the Borrower
under this Agreement or any other Loan Document. Without limiting the generality
of the foregoing, any requirement herein or in any other Loan Document that a
notice be delivered to the Borrower shall be satisfied if such notice is
delivered to CC Operating in accordance with Section 10.2.

          10.17 WAIVERS OF JURY TRIAL. HOLDINGS, THE BORROWER, THE
ADMINISTRATIVE AGENT AND THE LENDERS HEREBY IRREVOCABLY AND UNCONDITIONALLY
WAIVE TRIAL BY JURY IN ANY LEGAL ACTION OR PROCEEDING RELATING TO THIS AGREEMENT
OR ANY OTHER LOAN DOCUMENT AND FOR ANY COUNTERCLAIM THEREIN.

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed and delivered by their proper and duly authorized officers as
of the day and year first above written.

                                        CROWN CASTLE INTERNATIONAL CORP.

                                        By: /s/ W. Benjamin Moreland
                                           -------------------------------------
                                         Name: W. Benjamin Moreland
                                         Title: Senior Vice President and
                                                Chief Financial Officer

                                        CROWN CASTLE OPERATING COMPANY

                                        By: /s/ W. Benjamin Moreland
                                           -------------------------------------
                                         Name: W. Benjamin Moreland
                                         Title: Senior Vice President

                                        CROWN CASTLE INTERNATIONAL CORP. de
                                        PUERTO RICO

                                        By: /s/ W. Benjamin Moreland
                                           -------------------------------------
                                         Name: W. Benjamin Moreland
                                         Title: Senior Vice President

                                        JPMORGAN CHASE BANK, as Administrative
                                        Agent

                                        By: /s/ Edmond DeForest
                                           -------------------------------------
                                         Name: Edmond DeForest
                                         Title: Vice President

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