Document:

<PAGE>

                                                                   Exhibit 10.18
                                                                   -------------

                                $1,000,000,000

                     AMENDED AND RESTATED CREDIT AGREEMENT

                                     among

                           TIME WARNER TELECOM INC.,

                      TIME WARNER TELECOM HOLDINGS INC.,

                                 as Borrower,

                              The Several Lenders

                       from Time to Time Parties Hereto,

                           THE CHASE MANHATTAN BANK,

                           as Administrative Agent,

                           BANK OF AMERICA, N.A. and

                     MORGAN STANLEY SENIOR FUNDING, INC.,

                           as Co-Syndication Agents,

                                      and

                              ABN AMRO BANK N.V.,

                            as Documentation Agent

                         Dated as of January 10, 2001

      CHASE SECURITIES INC., as Sole Lead Arranger and Sole Book Manager

              MORGAN STANLEY SENIOR FUNDING, INC., as an Arranger
<PAGE>

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                                 Page
<S>                                                                                                              <C>
SECTION 1.   DEFINITIONS...................................................................................         1

     1.1.    Defined Terms.................................................................................         1
     1.2.    Other Definitional Provisions.................................................................        25

SECTION 2.   AMOUNT AND TERMS OF COMMITMENTS...............................................................        26

     2.1.    Commitments; Additional Commitments; Incremental Facility.....................................        26
     2.2.    Procedure for Borrowing.......................................................................        28
     2.3.    Repayment of Loans............................................................................        28
     2.4.    Swingline Commitment..........................................................................        30
     2.5.    Procedure for Swingline Borrowing; Refunding of Swingline Loans...............................        30
     2.6.    Commitment Fees, etc..........................................................................        32
     2.7.    Optional Termination or Reduction of Commitments..............................................        32
     2.8.    Optional Prepayments..........................................................................        33
     2.9.    Additional Mandatory Prepayments and Commitment Reductions....................................        33
     2.10.   Conversion and Continuation Options...........................................................        35
     2.11.   Limitations on Eurodollar Loans...............................................................        35
     2.12.   Interest Rates and Payment Dates..............................................................        36
     2.13.   Computation of Interest and Fees..............................................................        36
     2.14.   Inability to Determine Interest Rate..........................................................        36
     2.15.   Pro Rata Treatment and Payments...............................................................        37
     2.16.   Requirements of Law...........................................................................        38
     2.17.   Taxes.........................................................................................        40
     2.18.   Indemnity.....................................................................................        41
     2.19.   Change of Lending Office......................................................................        42
     2.20.   Replacement of Lenders........................................................................        42

SECTION 3.   LETTERS OF CREDIT.............................................................................        43

     3.1.    L/C Commitment................................................................................        43
     3.2.    Procedure for Issuance of Letter of Credit....................................................        43
     3.3.    Fees and Other Charges........................................................................        43
     3.4.    L/C Participations............................................................................        44
     3.5.    Reimbursement Obligation of the Borrower......................................................        45
     3.6.    Obligations Absolute..........................................................................        45
     3.7.    Letter of Credit Payments.....................................................................        45
     3.8.    Applications..................................................................................        46

SECTION 4.   REPRESENTATIONS AND WARRANTIES................................................................        46
</TABLE>

                                       i
<PAGE>

<TABLE>
<S>                                                                                                             <C>
     4.1.    Financial Condition........................................................................        46
     4.2.    No Change..................................................................................        47
     4.3.    Existence; Compliance with Law.............................................................        47
     4.4.    Power; Authorization; Enforceable Obligations..............................................        47
     4.5.    No Legal Bar...............................................................................        47
     4.6.    Litigation.................................................................................        48
     4.7.    No Default.................................................................................        48
     4.8.    Ownership of Property; Liens...............................................................        48
     4.9.    Intellectual Property......................................................................        48
     4.10.   Taxes......................................................................................        48
     4.11.   Federal Regulations........................................................................        48
     4.12.   Labor Matters..............................................................................        49
     4.13.   ERISA......................................................................................        49
     4.14.   Investment Company Act; Other Regulations..................................................        49
     4.15.   Subsidiaries...............................................................................        49
     4.16.   Use of Proceeds............................................................................        50
     4.17.   Environmental Matters......................................................................        50
     4.18.   Accuracy of Information, etc...............................................................        51
     4.19.   Security Documents.........................................................................        51
     4.20.   Solvency...................................................................................        52
     4.21.   Certain Documents..........................................................................        52

SECTION 5.   CONDITIONS PRECEDENT.......................................................................        52

     5.1.    Conditions to the Initial Extension of Credit on or After the
             Restatement Effective Date.................................................................        52
     5.2.    Conditions to Each Extension of Credit.....................................................        54

SECTION 6.   AFFIRMATIVE COVENANTS......................................................................        54

     6.1.    Financial Statements.......................................................................        54
     6.2.    Certificates; Other Information............................................................        55
     6.3.    Payment of Obligations.....................................................................        57
     6.4.    Maintenance of Existence; Compliance.......................................................        57
     6.5.    Maintenance of Property; Insurance.........................................................        57
     6.6.    Inspection of Property; Books and Records; Discussions.....................................        57
     6.7.    Notices....................................................................................        57
     6.8.    Environmental Laws.........................................................................        58
     6.9.    Additional Collateral, etc.................................................................        58

SECTION 7.   NEGATIVE COVENANTS.........................................................................        60

     7.1.    Financial Condition Covenants..............................................................        60
     7.2.    Indebtedness...............................................................................        61
     7.3.    Liens......................................................................................        63
     7.4.    Fundamental Changes........................................................................        65
     7.5.    Disposition of Property....................................................................        65
     7.6.    Restricted Payments........................................................................        66
     7.7.    Capital Expenditures.......................................................................        68
</TABLE>

                                      ii
<PAGE>

<TABLE>
<S>                                                                                                             <C>
     7.8.    Investments.................................................................................       68
     7.9.    Optional Payments and Modifications of Certain Debt Instruments.............................       69
     7.10.   Transactions with Affiliates................................................................       69
     7.11.   Sales and Leasebacks........................................................................       70
     7.12.   Changes in Fiscal Periods...................................................................       70
     7.13.   Negative Pledge Clauses.....................................................................       70
     7.14.   Clauses Restricting Subsidiary Distributions................................................       70
     7.15.   Lines of Business; Holding Company Status...................................................       71
     7.16.   Modifications to Time Warner Arrangements and Material Rights and
             Privileges..................................................................................       71
     7.17.   Amendments to GST Asset Purchase Agreement..................................................       71
     7.18.   Assets of TWT New Jersey....................................................................       71

SECTION 8.   EVENTS OF DEFAULT...........................................................................       71

SECTION 9.   THE AGENTS..................................................................................       75

     9.1.    Appointment.................................................................................       75
     9.2.    Delegation of Duties........................................................................       75
     9.3.    Exculpatory Provisions......................................................................       76
     9.4.    Reliance by Administrative Agent............................................................       76
     9.5.    Notice of Default...........................................................................       76
     9.6.    Non-Reliance on Agents and Other Lenders....................................................       77
     9.7.    Indemnification.............................................................................       77
     9.8.    Agent in Its Individual Capacity............................................................       78
     9.9.    Successor Administrative Agent..............................................................       78
     9.10.   Documentation Agent and Co-Syndication Agents...............................................       78

SECTION 10.   MISCELLANEOUS..............................................................................       78

     10.1.   Amendments and Waivers......................................................................       78
     10.2.   Notices.....................................................................................       80
     10.3.   No Waiver; Cumulative Remedies..............................................................       81
     10.4.   Survival of Representations and Warranties..................................................       81
     10.5.   Payment of Expenses and Taxes...............................................................       81
     10.6.   Successors and Assigns; Participations and Assignments......................................       82
     10.7.   Adjustments; Set-off........................................................................       85
     10.8.   Counterparts................................................................................       85
     10.9.   Severability................................................................................       85
     10.10.  Integration.................................................................................       85
     10.11.  GOVERNING LAW...............................................................................       86
     10.12.  Submission To Jurisdiction; Waivers.........................................................       86
     10.13.  Acknowledgments.............................................................................       86
     10.14.  Releases of Guarantees and Liens............................................................       87
     10.15.  Confidentiality.............................................................................       87
     10.16.  WAIVERS OF JURY TRIAL.......................................................................       88
</TABLE>

                                      iii
<PAGE>

ANNEX:

A         Pricing Grid

SCHEDULES:

1.1A      Commitments
4.4       Consents, Authorizations, Filings and Notices
4.15      Subsidiaries
7.2(d)    Existing Indebtedness
7.3(f)    Existing Liens
7.10      Affiliate Transactions

EXHIBITS:

A         Form of Guarantee and Collateral Agreement
B         Form of Compliance Certificate
C         Form of Closing Certificate
D-1       New Lender Supplement
D-2       Increased Facility Activation Notice
E         Form of Assignment and Acceptance
F         Form of Prepayment Option Notice
G         Form of Exemption Certificate

                                      iv
<PAGE>

          AMENDED AND RESTATED CREDIT AGREEMENT, dated as of January 10, 2001,
among TIME WARNER TELECOM INC., a Delaware corporation ("TWTC"), TIME WARNER
                                                         ----
TELECOM HOLDINGS INC., a Delaware corporation (the "Borrower"), the several
                                                    --------
banks and other financial institutions or entities from time to time parties to
this Agreement (the "Lenders"), ABN AMRO BANK N.V., as documentation agent (in
                     -------
such capacity, the "Documentation Agent"), BANK OF AMERICA, N.A. and MORGAN
                    -------------------
STANLEY SENIOR FUNDING, INC., as co-syndication agents (in such capacity, the
"Co-Syndication Agents"), and THE CHASE MANHATTAN BANK ("Chase" and, in such
 ---------------------                                   -----
capacity, the "Administrative Agent"), as administrative agent.
               --------------------

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

          WHEREAS, TWTC, the Borrower, the Lenders, Chase, as administrative
agent, Bank of America, N.A., as syndication agent, and ABN Amro Bank N.V., as
documentation agent, are parties to the Credit Agreement, dated as of April 10,
2000 (the "Existing Credit Agreement");
           -------------------------

          WHEREAS, TWTC and the Borrower have requested that the Lenders and the
Administrative Agent (i) amend certain provisions of the Existing Credit
Agreement to, among other things, obtain an additional $525,000,000 of credit
facilities in connection with TWTC's proposed acquisition of the assets of GST
Telecommunications, Inc., a Canadian corporation ("GST"), and certain affiliates
                                                   ---
of GST, and (ii) restate the Existing Credit Agreement in its entirety as set
forth herein; and

          WHEREAS, the Lenders and the Administrative Agent are willing to amend
and restate the Existing Credit Agreement and to make credit facilities
available to the Borrower upon and subject to the terms and conditions
hereinafter set forth;

          NOW, THEREFORE, in consideration of the premises and the agreements
hereinafter set forth, the parties hereby agree 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 1/16th of 1%) equal to the greatest of (i) the Prime Rate in effect
on such day, (ii) the Three-Month Secondary CD Rate (adjusted for statutory
reserve requirements) plus 1% and (iii) the Federal Funds Effective Rate from
                      ----
time to time plus 0.5%. 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.

          "Acquisition":  the acquisition of certain assets (the "Assets") of
           -----------                                            ------
GST and certain of its affiliates by one or more Wholly Owned Subsidiaries of
TWTC pursuant to the GST Asset Purchase Agreement.

          "Additional Extensions of Credit":  as defined in Section 10.1.
           -------------------------------

          "Additional Financing":  any offering(s) by TWTC of debt or equity
           --------------------
securities (or bridge financing(s) in respect thereof) that has been disclosed
to the Administrative Agent and the Arrangers prior to the date hereof, or any
offering(s) by TWTC of debt or equity securities to replace such bridge
financing(s), including the issuance of any Rollover Notes or refinancings or
replacements thereof, in each case, in form and substance, and pursuant to
documentation, reasonably satisfactory to the Administrative Agent and the
Arrangers, that will, in the aggregate, raise no less than $700,000,000 in
proceeds to be used to fund the Acquisition and the business plan as described
in the Confidential Information Memorandum.

          "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.

          "Agents":  the collective reference to the Co-Syndication Agents, the
           ------
Documentation Agent and the Administrative Agent.

          "Aggregate Exposure":  with respect to any Lender at any time, an
           ------------------
amount equal to the sum of (a) the aggregate unpaid principal amount of such
Lender's Term Loans, (b) the amount of such Lender's unutilized Delayed-Draw
Term Commitment then in effect and (c) 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 Amended and Restated Credit Agreement, as amended,
           ---------
supplemented or otherwise modified from time to time.
<PAGE>

                                                                               3

          "Annualized Consolidated EBITDA":  for any fiscal quarter, an amount
           ------------------------------
equal to Consolidated EBITDA for such period multiplied by four.
                                             -------------

          "Applicable Margin":  means, for any day, with respect to (a) any
           -----------------
Delayed-Draw Term Loans or Revolving Loans, as the case may be, the applicable
rate per annum set forth in the Pricing Grid; provided that prior to the first
                                              --------
Adjustment Date occurring after the first anniversary of the Restatement
Effective Date, such applicable rate shall be (i) in the case of ABR Loans,
1.75%, and (ii) in the case of Eurodollar Loans, 2.75%, and (b) any Tranche B
Term Loans, (i) 3.00% per annum, in the case of ABR Loans, and (ii) 4.00% per
annum, in the case of Eurodollar Loans

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

          "Approved Fund":  with respect to any Lender that is a fund that
           -------------
invests in commercial loans, any other fund that invests in commercial loans and
is managed or advised by the same investment advisor as such Lender or by an
Affiliate of such investment advisor.

          "Arranger":  Morgan Stanley Senior Funding, Inc.
           --------

          "Arrangers":  the collective reference to the Sole Lead Arranger and
           ---------
the Arranger.

          "Asset Sale":  any Disposition of property or series of related
           ----------
Dispositions of property (excluding (a) Exchanges pursuant to which no cash
consideration is received by any Subsidiary of TWTC and (b) any such Disposition
(i) permitted by clause (a), (b), (c), (d) or (e) of Section 7.5 or (ii) in
connection with any issuance or sale of the Capital Stock of TWTC) that yields
gross proceeds to TWTC, the Borrower 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 or at the accreted amount thereof in the case of
zero coupon or discount notes or other debt securities and valued at fair market
value in the case of other non-cash proceeds) in excess of $5,000,000.

          "Assets":  as defined in the definition of "Acquisition".
           ------

          "Assignee":  as defined in Section 10.6(c).
           --------

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

          "Assignor":  as defined in Section 10.6(c).
           --------

          "Available Delayed-Draw Term Commitment":  as to any Delayed-Draw Term
           --------------------------------------
Lender at any time, an amount equal to the excess, if any, of (a) such Lender's
Delayed-Draw Term Commitment then in effect over (b) such Lender's Delayed-Draw
                                            ----
Term Loans then outstanding.
<PAGE>

                                                                               4

          "Available Revolving Commitment":  as to any Revolving Lender at any
           ------------------------------
time, an amount equal to the excess, if any, of (a) such Lender's Revolving
Commitment then in effect over (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":  as defined in the preamble hereto.
           --------

          "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.

          "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
<PAGE>

                                                                               5

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, by any political subdivision or taxing authority of any
such state, commonwealth or territory or by any foreign government, the
securities of which state, commonwealth, territory, political subdivision,
taxing authority or foreign government (as the case may be) are rated at least A
by S&P or A 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; or (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.

          "Cash Pay Preferred Stock":  any class or series of Capital Stock of
           ------------------------
any Person that by its terms or otherwise (i) is required to be redeemed prior
to the date (the "Expiration Date") which is one year after the final maturity
                  ---------------
date of the Loans and the expiration of the Commitments hereunder, (ii) is
redeemable at the option of the holder of such class or series of Capital Stock
at any time prior to the Expiration Date, (iii) is convertible into or
exchangeable for (unless solely at the option of such Person) Capital Stock
referred to in clause (i) or (ii) above or Indebtedness having a scheduled
maturity prior to the Expiration Date or that would require cash payment of
interest prior to the Expiration Date or (iv) provides for payment of dividends
(other than dividends payable solely in common stock or in Non-Cash Pay
Preferred Stock of TWTC) prior to the Expiration Date; provided, that no Capital
                                                       --------
Stock shall constitute Cash Pay Preferred Stock as a result of containing
provisions that give holders the right to require such Person to repurchase or
redeem such Capital Stock upon the occurrence of (x) a "change of control" (or
similar event, however defined) or (y) the sale of all or substantially all of
such Person's assets (or similar event, however defined).

          "Chase":  as defined in the preamble hereto.
           -----

          "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.

          "Commitment":  as to any Lender, the sum of the Delayed-Draw Term
           ----------
Commitment, the Tranche B Term Commitment, the Revolving Commitment and the
Incremental Commitment, if any, of such Lender.
<PAGE>

                                                                               6

          "Commitment Fee Rate":  the per annum rate determined in accordance
           -------------------
with the Pricing Grid.

          "Commonly Controlled Entity":  an entity, whether or not incorporated,
           --------------------------
that together with the Borrower is treated as a single employer under Section
414(b) or (c) of the Code or, solely for purposes of Section 302 of ERISA and
Section 412 of the Code, is treated as a single employer under Section 414 of
the Code.

          "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 hereunder otherwise
required to be made by such Lender and designated by such Lender in a written
instrument, subject to the consent of the Administrative Agent and the Borrower
(which consent, in each case, shall not be unreasonably withheld); 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 hereunder.

          "Confidential Information Memorandum":  the Confidential Information
           -----------------------------------
Memorandum dated October 2000 and furnished to the Lenders.

          "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 TWTC 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 TWTC and
its Subsidiaries at such date, but excluding (a) the current portion of any
Funded Debt of the Borrower 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
           ----------------------------------------
fiscal period, the ratio of (a) Consolidated EBITDA determined for the period of
four consecutive fiscal quarters ending on such day to (b) the sum of (i)
Consolidated Interest Expense for the period of four consecutive fiscal quarters
ending on such day and (ii) scheduled principal payments on Indebtedness of TWTC
and any of its Subsidiaries for the period of four consecutive fiscal quarters
commencing immediately after such day (or, in the case of the
<PAGE>

                                                                               6

Revolving Loans, the excess, if any, of the amount of the Revolving Loans then
in effect over the amount of the Total Revolving Commitments scheduled to be in
effect at the end of such period of four consecutive fiscal quarters).

          "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, and (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), provided, that the amounts referred to in this
                              --------
clause (e) shall not, in the aggregate, exceed $20,000,000 for any fiscal year
of TWTC, plus, in the case of such non-cash losses on sales of the Assets or any
non-cash losses on minority investments or investments in unconsolidated
Subsidiaries, $30,000,000 for the term of this Agreement and minus, to the
                                                             -----
extent included in the statement of such Consolidated Net Income for such
period, the sum of (a) interest income and (b) any extraordinary, unusual or
non-recurring income or gains (other than any reciprocal compensation income or
gains to the extent included in operating income), 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.

          "Consolidated Interest Coverage Ratio":  for any period, the ratio of
           ------------------------------------
(a) Consolidated EBITDA for such period to (b) Consolidated Interest Expense for
such period.

          "Consolidated Interest Expense":  for any period, total cash interest
           -----------------------------
expense (including that attributable to Capital Lease Obligations) of TWTC and
its Subsidiaries for such period with respect to all outstanding Indebtedness
(and cash dividends on Cash Pay Preferred Stock) of TWTC 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, less any net receipts, in respect of interest rates to
the extent such net costs are allocable to such period in accordance with GAAP
and less interest income and capitalized interest).

          "Consolidated Leverage Ratio":  as of any day, the ratio of (a)
           ---------------------------
Consolidated Net Total Debt on such day to (b) Annualized Consolidated EBITDA
for the most recent complete fiscal quarter of TWTC.

          "Consolidated Net Income":  for any period, the consolidated net
           -----------------------
income (or loss) of TWTC and its Subsidiaries, 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 TWTC or is merged into or consolidated with TWTC or any of its
Subsidiaries, (b) the income (or deficit) of any Person (other than a Subsidiary
of TWTC) in which TWTC or any of its Subsidiaries has an ownership interest,
except to the extent
<PAGE>

                                                                               8

that any such income is actually received by TWTC or such Subsidiary in the form
of dividends or similar distributions and (c) the undistributed earnings of any
Subsidiary of TWTC 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 (other than under any Loan Document) or
Requirement of Law applicable to such Subsidiary.

          "Consolidated Net Senior Debt":  as of any day, the excess of (i)
           ----------------------------
Consolidated Senior Debt at such date over (ii) the aggregate amount of cash and
Cash Equivalents reflected on a consolidated balance sheet of the Subsidiaries
of TWTC at such date in excess of $50,000,000.

          "Consolidated Net Total Debt":  as of any day, the excess of (i)
           ---------------------------
Consolidated Total Debt at such date over (ii) the aggregate amount of cash and
Cash Equivalents reflected on a consolidated balance sheet of TWTC at such date
in excess of $50,000,000.

          "Consolidated Senior Debt":  at any date, the aggregate principal
           ------------------------
amount of all Senior Indebtedness (other than, in the case of contingent
obligations of the type described in clause (f) of the definition of
"Indebtedness", any such obligations not constituting L/C Obligations) of the
Subsidiaries of TWTC at such date taken as a whole, determined on a consolidated
basis in accordance with GAAP.

          "Consolidated Total Debt":  at any date, the aggregate principal
           -----------------------
amount of all Indebtedness (other than, in the case of contingent obligations of
the type described in clause (f) of the definition of "Indebtedness", any such
obligations not constituting L/C Obligations) of TWTC 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 TWTC on the Restatement
           --------------------
Effective Date and each other director, if, in each case, such other director's
nomination for election to the board of directors of TWTC is recommended by at
least a majority of the then Continuing Directors or such other director
receives the vote of the Permitted Investors in his or her election by the
shareholders of TWTC.

          "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.

          "Control Investment Affiliate":  as to any Person, any other Person
           ----------------------------
that (a) directly or indirectly, is in control of, is controlled by, or is under
common control with, such Person and (b) is organized by such Person primarily
for the purpose of making equity or debt investments in one or more companies.
For purposes of this definition, "control" of a Person means the power, directly
or indirectly, to direct or cause the direction of the management and policies
of such Person whether by contract or otherwise.
<PAGE>

                                                                               9

          "Co-Syndication Agents":  as defined in the preamble hereto.
           ---------------------

          "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.

          "Delayed-Draw Aggregate Funded Amount":  the aggregate principal
           ------------------------------------
amount of Delayed-Draw Term Loans made pursuant to Section 2.1(a).

          "Delayed-Draw Commitment Termination Date":  the date that is the
           ----------------------------------------
second anniversary of the Restatement Effective Date or the Business Day
following such date if such date is not a Business Day.

          "Delayed-Draw Term Commitment":  as to any Delayed-Draw Term Lender,
           ----------------------------
the obligation of such Lender to make one or more Delayed-Draw Term Loans to the
Borrower hereunder in an aggregate principal amount not to exceed the amount set
forth under the heading "Delayed-Draw Term Commitment" opposite such Lender's
name on Schedule 1.1A or in the Assignment and Acceptance 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 original aggregate amount of the Total
Delayed-Draw Term Commitments is $275,000,000.

          "Delayed-Draw Term Facility":  as defined in the definition of
           --------------------------
"Facility".

          "Delayed-Draw Term Lender":  each Lender that has a Delayed-Draw Term
           ------------------------
Commitment or is the holder of a Delayed-Draw Term Loan.

          "Delayed-Draw Term Loan":  as defined in Section 2.1(a).
           ----------------------

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

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

          "Documentation Agent":  as defined in the preamble hereto.
           -------------------

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

          "Domestic Subsidiary":  any Subsidiary of TWTC organized under the
           -------------------
laws of any jurisdiction within the United States.

          "Environmental Laws":  any and all applicable foreign, Federal, state,
           ------------------
local or municipal laws, rules, orders, regulations, statutes, ordinances,
codes, decrees, requirements of any Governmental Authority or other Requirements
of Law (including common law) regulating,
<PAGE>

                                                                              10

relating to or imposing liability or standards of conduct concerning protection
of human health (as relating to exposure to Materials of Environmental Concern)
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 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.
<PAGE>

                                                                              11

          "Excess Cash Flow":  for any fiscal year of TWTC, 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 TWTC 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) Capital
Expenditures (excluding the principal amount of Indebtedness incurred in
connection with such expenditures permitted by Section 7.2(e) and any such
expenditures financed with the proceeds of any Reinvestment Deferred Amount),
(iii) the amount of Investments (other than Investments in Cash Equivalents)
made during such fiscal year pursuant to Section 7.8 to the extent such
Investments were financed with internally generated cash flow of TWTC and its
Subsidiaries, (iv) the aggregate amount of all principal payments of Funded Debt
of TWTC 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 and other than in respect of any
bridge financing to the extent of any refinancing thereof), (v) increases in
Consolidated Working Capital for such fiscal year, and (vi) an amount equal to
the aggregate net non-cash gain on the Disposition of property by TWTC 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.

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

          "Exchange":  any exchange of operating assets for other operating
           --------
assets in a Permitted Line of Business and, subject to the last sentence of this
definition, of comparable value and use to those assets being exchanged,
including (a) exchanges involving the transfer or acquisition (or both transfer
and acquisition) of Capital Stock of a Person so long as 100% of the Capital
Stock of such Person is transferred or acquired, as the case may be, and (b)
fiber capacity and network swaps.  It is understood that exchanges of the kind
described above as to which a portion of the consideration paid or received is
in the form of cash shall nevertheless constitute "Exchanges" for the purposes
of this Agreement so long as the aggregate consideration received by any
Subsidiary of TWTC in connection with such exchange represents fair market value
for the assets and cash being transferred by TWTC and its Subsidiaries.

          "Excluded Foreign Subsidiary":  any Foreign Subsidiary in respect of
           ---------------------------
which either (a) the pledge of all of the Capital Stock of such Subsidiary as
Collateral or (b) the guaranteeing by such Subsidiary of the Obligations, would,
in the good faith judgment of the Borrower, result in adverse tax consequences
to the Borrower.

          "Existing Credit Agreement":  as defined in the Preamble.
           -------------------------

          "Expiration Date":  as defined in the definition of the term "Cash Pay
           ---------------
Preferred Stock".
<PAGE>

                                                                              12

          "Facility":  each of (a) the Delayed-Draw Term Commitments and the
           --------
Delayed-Draw Term Loans made thereunder (the "Delayed-Draw Term Facility"), (b)
                                              --------------------------
the Tranche B Term Commitments and the Tranche B Term Loans made thereunder (the
"Tranche B Term Facility"), (c) the Revolving Commitments and the extensions of
 -----------------------
credit made thereunder (the "Revolving Facility") and (d) the Incremental
                             ------------------
Facility, if any.

          "FCC":  the Federal Communications Commission and any successor
           ---
thereto.

          "FCC License":  any community antenna relay service, broadcast
           -----------
auxiliary license, earth station registration, business radio, microwave or
special safety radio service license issued by the FCC pursuant to the
Communications Act of 1934, as amended.

          "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 the Reference Lender
from three federal funds brokers of recognized standing selected by it.

          "Foreign Subsidiary":  any Subsidiary of TWTC 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 and, in the case of TWTC, the bridge financing(s) described in the
definition of Additional Financing, taken together with any refinancings
thereof.

          "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 date hereof
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 TWTC 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 TWTC'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
<PAGE>

                                                                              13

an amendment shall have been executed and delivered by TWTC, the Borrower, 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.

          "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).

          "GST":  as defined in the recitals hereto.
           ---

          "GST Asset Purchase Agreement":  the Asset Purchase Agreement, dated
           ----------------------------
as of September 11, 2000, among TWTC, GST, GST USA, Inc. and the other parties
named therein.

          "Guarantee and Collateral Agreement":  the Amended and Restated
           ----------------------------------
Guarantee and Collateral Agreement to be executed and delivered by TWTC, the
Borrower and each Subsidiary Guarantor, substantially in the form of Exhibit A,
as the same may be amended, supplemented or otherwise modified from time to
time.

          "Guarantee Obligation":  as to any Person (the "guaranteeing person"),
           --------------------                           -------------------
any obligation of (a) the guaranteeing person or (b) another Person (including
any bank under any letter of credit) to induce the creation of which the
guaranteeing person has issued a reimbursement, counterindemnity or similar
obligation, in either case guaranteeing or in effect guaranteeing any
Indebtedness, leases, dividends or other obligations (the "primary obligations")
                                                           -------------------
of any other 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
<PAGE>

                                                                              14

such guaranteeing person's maximum reasonably anticipated liability in respect
thereof as determined by the Borrower in good faith.

          "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.

          "Increased Facility Activation Notice":  a notice substantially in the
           ------------------------------------
form of Exhibit D-2.

          "Increased Facility Closing Date":  any Business Day designated as
           -------------------------------
such in an Increased Facility Activation Notice.

          "Incremental Commitments":  as defined in Section 2.1(d).
           -----------------------

          "Incremental Facility":  as defined in Section 2.1(d).
           --------------------

          "Incremental Loans":  as defined in Section 2.1(d).
           -----------------

          "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 of property or services (other than
current trade payables incurred in the ordinary course of such Person's
business), (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) all Cash Pay Preferred Stock,
(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 derivative transactions
(including, without limitation, Hedge Agreements).  For purposes of this
definition, the principal amount of any Cash Pay Preferred Stock shall be deemed
to be its liquidation value. 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.

          "Indenture":  the indenture with respect to TWTC's $400,000,000 9-3/4%
           ---------
Senior Notes.
<PAGE>

                                                                              15

          "Indenture Indebtedness Basket":  as defined in Section 6.2(b).
           -----------------------------

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

          "Intercompany Subordinated Note":  a promissory note subordinated on
           ------------------------------
terms and conditions satisfactory to the Administrative Agent, which note, in
any event, (a) shall be subordinated to all other obligations of the Borrower
and TWTC's Subsidiaries, (b) shall not be assignable without the prior written
consent of the Administrative Agent and (c) the principal and interest payments
in respect of which shall not be made unless expressly permitted by Section 7.6.

          "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, 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 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:

               (i)  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;
<PAGE>

                                                                              16

               (ii)  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 Delayed-Draw Term
          Loans or the Tranche B Term Loans, as the case may be;

               (iii) 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

               (iv)  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 7.8.
           -----------

          "Issuing Lender":  each of Chase and any other Revolving Lender 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.

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

          "L/C Fee Payment Date":  the last day of each March, June, September
           --------------------
and December and the last day of the Revolving Commitment Period.

          "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":  the collective reference to all the Revolving
           ----------------
Lenders other than the Issuing Lender.

          "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.
           ----
<PAGE>

                                                                              17

          "Loan Documents":  this Agreement, the Security Documents and the
           --------------
Notes.

          "Loan Parties":  TWTC, the Borrower and each Subsidiary Guarantor 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 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).  For purposes of this definition, any
unutilized Delayed-Draw Term Commitments shall be deemed to have been borrowed
as Delayed-Draw Term Loans until the Delayed-Draw Commitment Termination Date.

          "Material Adverse Effect":  a material adverse effect on (a) the
           -----------------------
business, property, operations or financial condition of TWTC 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.

          "Multiemployer Plan":  a Plan that is a multiemployer plan as defined
           ------------------
in Section 4001(a)(3) of ERISA.

          "Net Cash Proceeds":  (a) in connection with any Asset Sale, Exchange
           -----------------
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, Exchange or Recovery Event, net of (i) 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, Exchange or Recovery Event (other than any
Lien pursuant to a Security Document) and other customary fees and expenses
actually incurred in connection therewith, (ii) taxes paid or 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 (iii)
appropriate amounts to be provided by TWTC, the Borrower or any Subsidiary, as
the case may be, as a reserve required in accordance with GAAP against any
liabilities associated with such Asset Sale, Exchange or Recovery Event and
retained by TWTC, the Borrower or any Subsidiary, as the case may be, after such
Asset Sale, Exchange or Recovery Event, including, without limitation, pension
and other post-employment benefit liabilities and liabilities under any
indemnification obligations associated with such Disposition 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.
<PAGE>

                                                                              18

          "New Lender":  as defined in Section 2.1(e).
           ----------

          "New Lender Supplement":  as defined in Section 2.1(e).
           ---------------------

          "Non-Cash Pay Preferred Stock":  any preferred stock of a Person that
           ----------------------------
does not qualify as Cash Pay Preferred Stock.

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

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

          "Notes":  the collective reference to any promissory note evidencing
           -----
Loans.

          "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 Reimbursement Obligations 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.

          "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(b).
           -----------

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

          "Permitted Encumbrances":  means with respect to or upon any of the
           ----------------------
Assets, any (1) easement, encroachment or similar reservation which does not
impair the current use, occupancy, or value, or the marketability of title, of
such Asset and which would not individually (or in the aggregate with others) be
reasonably expected to have a material adverse effect on or materially impair
the use or enjoyment of such Asset; (2) liens securing the performance of bids,
tenders, leases, contracts (other than for the repayment of debt), statutory
obligations, surety, customs and appeal bonds and other obligations of like
nature, incurred as an incident to and in the ordinary course of GST's business;
(3) liens imposed by law, such as carriers', warehouseman's, mechanics',
materialmen's, landlords', laborers', suppliers' and vendors' liens,
<PAGE>

                                                                              19

incurred in good faith in the ordinary course of GST's business and securing
obligations which are not yet due or which are being contested in good faith by
appropriate proceedings as to which GST and its affiliates and/or TWTC and its
affiliates shall, to the extent required by GAAP, have set aside on its books
appropriate provision for liability; and (4) extensions, renewals and
replacements of liens referred to in (1) through (3) of this sentence; provided,
that any such extension, renewal or replacement lien shall be limited to the
property or assets covered by the lien extended, renewed or replaced and that
the obligations secured by any such extension, renewal or replacement lien shall
be in an amount not greater than the amount of the obligations secured by the
original lien extended, renewed or replaced, none of which, individually or in
the aggregate, materially impair the value of the property subject thereto or
the use to which such property is presently put.

          "Permitted Investors":  the collective reference to Time Warner Inc.,
           -------------------
including any successor thereto pursuant to a merger with AOL, Inc., and its
Control Investment Affiliates.

          "Permitted Line of Business":  as defined in Section 7.15(a).
           --------------------------

          "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 the Borrower 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.

          "Pledgor":  TWTC, in its capacity as pledgor.
           -------

          "Prepayment Date":  as defined in Section 2.9(e).
           ---------------

          "Prepayment Option Notice":  as defined in Section 2.9(e).
           ------------------------

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

          "Prime Rate":  the rate of interest per annum publicly announced from
           ----------
time to time by the Reference Lender 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 the Reference Lender in connection with
extensions of credit to debtors).

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

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

          "Properties":  as defined in Section 4.17(a).
           ----------
<PAGE>

                                                                              20

          "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 TWTC, the Borrower or any of their Subsidiaries.

          "Reference Lender":  The Chase Manhattan Bank.
           ----------------

          "Refunded Swingline Loans":  as defined in Section 2.5.
           ------------------------

          "Refunding Date":  as defined in Section 2.5.
           --------------

          "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 Issuing Lender pursuant to Section 3.5 for amounts drawn under
Letters of Credit.

          "Reinvestment Deadline":  as defined in the definition of
           ---------------------
"Reinvestment Notice".

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

          "Reinvestment Event":  any Asset Sale, Exchange or Recovery Event in
           ------------------
respect of which the Borrower has delivered a Reinvestment Notice.

          "Reinvestment Notice":  a written notice executed by a Responsible
           -------------------
Officer stating that (a) no Event of Default has occurred and is continuing and
(b) TWTC (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,
Exchange or Recovery Event to acquire or repair assets useful in its business on
or prior to the later of (i) the date occurring twelve months after the date of
receipt of such Net Cash Proceeds and (ii) the date occurring eighteen months
after the date of receipt of such Net Cash Proceeds so long as such Net Cash
Proceeds were committed to be reinvested within twelve months following the
receipt thereof (such later date, the "Reinvestment Deadline").
                                       ---------------------

          "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 TWTC's business.

          "Reinvestment Prepayment Date":  with respect to any Reinvestment
           ----------------------------
Event, the earlier of (a) the relevant Reinvestment Deadline and (b) the date on
which TWTC shall have determined not to, or shall have otherwise ceased to,
acquire or repair assets useful in TWTC's business with all or any portion of
the relevant Reinvestment Deferred Amount.
<PAGE>

                                                                              21

          "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.

          "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, (b) the aggregate unutilized Delayed-Draw Term Commitments then in
effect, (c) the Total Revolving Commitments then in effect or, if the Revolving
Commitments have been terminated, the Total Revolving Extensions of Credit then
outstanding and (d) the Incremental Commitments, if any, then in effect or, if
the Incremental Commitments have been terminated, the aggregate principal amount
of the Incremental Loans, if any, then outstanding.

          "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,
           -------------------
treasurer, chief financial officer or chief accounting officer of TWTC or the
Borrower, as applicable, but in any event, with respect to financial matters,
the chief financial officer of TWTC or the Borrower, as applicable.

          "Restatement Effective Date":  the date on which the conditions
           --------------------------
precedent set forth in Section 5.1 shall have been satisfied, which date shall
not be later than February 15, 2001.

          "Restricted Payments":  as defined in Section 7.6.
           -------------------

          "Revolving Aggregate Committed Amount":  the sum of the Total
           ------------------------------------
Revolving Commitments as in effect on the Restatement Effective Date and the
amount of any increases therein effected pursuant to Section 2.1(c).

          "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 Acceptance 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 original amount of the Total Revolving
Commitments is $475,000,000.

          "Revolving Commitment Period":  the period from and including the
           ---------------------------
Restatement Effective Date to the Revolving Termination Date.
<PAGE>

                                                                              22

          "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 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":  December 31, 2007.
           --------------------------

          "Rollover Notes":  any Indebtedness required to be issued by TWTC on
           --------------
or after the maturity date of any bridge advances in exchange for such bridge
advances in accordance with the terms of the bridge financing.

          "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 and all other security documents (including mortgages)
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.

          "Senior Indebtedness":  any Indebtedness of any Subsidiary of TWTC
           -------------------
that is not contractually subordinated to the Indebtedness under this Agreement.
For the avoidance of doubt, any Indebtedness represented by an Intercompany
Subordinated Note will not constitute Senior Indebtedness hereunder.

          "Senior Leverage Ratio":  as of any day, the ratio of (a) Consolidated
           ---------------------
Net Senior Debt on such day to (b) Annualized Consolidated EBITDA for the most
recent complete fiscal quarter of TWTC.

          "Senior Notes":  the 9-3/4% Senior Notes issued under the Indenture.
           ------------
<PAGE>

                                                                              23

          "Shell Subsidiary":  any Subsidiary of TWTC that is a "shell" company
           ----------------
having (a) assets (either directly or through any Subsidiary or other Capital
Stock) with an aggregate value not  exceeding $10,000 and (b) no operations.

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

          "Sole Lead Arranger":  Chase Securities Inc.
           ------------------

          "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" as defined in
           ---------------------------
the Indenture.

          "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.  Unless otherwise qualified,
all references to a "Subsidiary" or to "Subsidiaries" in this Agreement shall
refer to a Subsidiary or Subsidiaries of TWTC.

          "Subsidiary Guarantor":  each Subsidiary of TWTC other than the
           --------------------
Borrower and any Excluded Foreign Subsidiary; provided, however, that unless TWT
                                              --------  -------
New Jersey has signed the Guarantee and Collateral Agreement on or prior to the
Restatement Effective Date, it will not
<PAGE>

                                                                              24

be deemed to be a Subsidiary Guarantor until the date that is 90 days following
the date upon which it becomes a party to the Guarantee and Collateral
Agreement.

          "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":  The Chase Manhattan Bank, in its capacity as the
           ----------------
lender of Swingline Loans.

          "Swingline Loans":  as defined in Section 2.4.
           ---------------

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

          "Term Lenders":  the collective reference to the Delayed-Draw Term
           ------------
Lenders and the Tranche B Term Lenders.

          "Term Loans":  the collective reference to the Delayed-Draw Term Loans
           ----------
and the Tranche B Term Loans.

          "Three-Month Secondary CD Rate":  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 the Reference Lender from three New York City negotiable
certificate of deposit dealers of recognized standing selected by it.

          "Time Warner Arrangements":  the collective reference to the capacity
           ------------------------
license of optical fibers and other property from Time Warner Cable, the
facilities lease and services arrangements and the trade name license agreement
between TWTC and Time Warner Inc. and its affiliates.

          "Total Delayed-Draw Term Commitments":  at any time, the aggregate
           -----------------------------------
amount of the Delayed-Draw Term Commitments then in effect.

          "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.
<PAGE>

                                                                              25

          "Tranche B Aggregate Funded Amount":  the aggregate principal amount
           ---------------------------------
of Tranche B Term Loans made pursuant to Section 2.1(a).

          "Tranche B Prepayment Amount":  as defined in Section 2.9(e).
           ---------------------------

          "Tranche B Term Commitment":  as to any Tranche B Term Lender, the
           -------------------------
obligation of such Lender to make a Tranche B Term Loan to the Borrower
hereunder in a principal amount not to exceed the amount set forth under the
heading "Tranche B Term Commitment" opposite such Lender's name on Schedule 1.1A
or in the Assignment and Acceptance 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 original aggregate amount of the Tranche B Term Commitments is
$250,000,000.

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

          "Tranche B Term Lender":  each Lender that has a Tranche B Term
           ---------------------
Commitment or is the holder of a Tranche B Term Loan.

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

          "Tranche B Term Percentage":  as to any Tranche B Term 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 all Tranche B Term Loans then outstanding.

          "Transferee":  any Assignee or Participant.
           ----------

          "TWTC":  as defined in the preamble hereto.
           ----

          "TWT New Jersey":  Time Warner Telecom of New Jersey, L.P., a Delaware
           --------------
limited partnership.

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

          "United States":  the United States of America.
           -------------

          "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.

          "Wholly Owned Subsidiary Guarantor":  any Subsidiary Guarantor that is
           ---------------------------------
a Wholly Owned Subsidiary of TWTC.

          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.
<PAGE>

                                                                              26

          (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 TWTC, the Borrower 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.

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

                  SECTION 2.  AMOUNT AND TERMS OF COMMITMENTS

          2.1.  Commitments; Additional Commitments; Incremental Facility. (a)
          ---------------------------------------------------------------
Subject to the terms and conditions hereof, (i) each Delayed-Draw Term Lender
severally agrees to make one or more term loans (each, a "Delayed-Draw Term
                                                          -----------------
Loan") to the Borrower in an aggregate amount not to exceed the amount of
----
the Delayed-Draw Term Commitment of such Lender and (ii) each Tranche B Term
Lender severally agrees to make a term loan (each, a "Tranche B Term Loan") to
                                                      -------------------
the Borrower in an amount not to exceed the amount of the Tranche B Term
Commitment of such Lender.  The Delayed-Draw Term Loans may be made on any date
during the period from and including the Restatement Effective Date to and
including the Delayed-Draw Commitment Termination Date, in up to 10 drawings.
Any unutilized Delayed-Draw Term Commitments shall automatically terminate on
the Delayed-Draw Commitment Termination Date.  The Tranche B Term Loans may only
be made on the Restatement Effective Date.  The Delayed-Draw Term Loans and the
Tranche B 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 continue (if applicable), through the amendment, restatement
and continuation described in paragraph (g) below, and 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 exceed the amount of such Lender's
Revolving Commitment.  During the Revolving Commitment Period the Borrower may
use the Revolving
<PAGE>

                                                                              27

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.

          (c) The Borrower and any one or more Lenders (including New Lenders)
may, with the consent of the Administrative Agent, at any time after the
Restatement Effective Date and prior to April 10, 2004, agree that such Lenders
shall obtain or increase the amount of their Revolving Commitments by executing
and delivering to the Administrative Agent an Increased Facility Activation
Notice specifying (i) the amount of such increase and (ii) the applicable
Increased Facility Closing Date.  Notwithstanding the foregoing, without the
consent of the Required Lenders, (i) the Total Revolving Commitments may not be
increased by more than $250,000,000 (minus the amount of any Incremental Loans
                                     -----
provided under Section 2.1(d) below), (ii) each increase effected pursuant to
this paragraph shall be in a minimum amount of at least $5,000,000 and (iii) no
more than five Increased Facility Closing Dates may be selected by the Borrower
during the term of this Agreement.  No Lender shall have any obligation to
participate in any increase described in this paragraph unless it agrees in
writing to do so in its sole discretion.

          (d) As an alternative or in addition to Section 2.1(c) above, the
Borrower and any one or more Lenders (including New Lenders) may, with the
consent of the Administrative Agent, at any time after the Restatement Effective
Date and prior to April 10, 2004, agree that such Lenders shall make an
additional loan facility (the "Incremental Facility"; the commitments
                               --------------------
thereunder, the "Incremental Commitments" and the loans thereunder, the
                 -----------------------
"Incremental Loans") available to the Borrower.  Such Incremental Facility may
 -----------------
be documented by a supplement to this Agreement signed by the Borrower, the
Administrative Agent and the Lenders party thereto. Notwithstanding the
foregoing, without the consent of the Required Lenders, (i) the aggregate amount
of the Incremental Facility shall not exceed $250,000,000 (minus the amount of
                                                           -----
any additional Revolving Commitments provided under Section 2.1(c) above), (ii)
the Incremental Loans shall not have a stated maturity prior to the Revolving
Termination Date, (iii) the Incremental Loans shall not have a weighted average
life less than the Revolving Loans, (iv) the Incremental Facility shall not
contain covenants that are more restrictive than the covenants set forth herein
and (v) after giving effect to such Incremental Facility and the borrowings
contemplated thereunder, no Default or Event of Default shall have occurred and
be continuing and TWTC shall be in pro forma compliance with the covenants
                                   --- -----
contained in Section 7.1.  No Lender shall have any obligation to participate in
any increase described in this paragraph unless it agrees in writing to do so in
its sole discretion.

          (e) Any additional bank, financial institution or other entity which,
with the consent of the Borrower and the Administrative Agent (which consent
shall not be unreasonably withheld), elects to become a "Lender" under this
Agreement in connection with any transaction described in Section 2.1(c) or
2.1(d) shall execute a New Lender Supplement (each, a "New Lender Supplement"),
                                                       ---------------------
substantially in the form of Exhibit D-1, whereupon such bank, financial
institution or other entity (a "New Lender") shall become a Lender for all
                                ----------
purposes and to the same extent as if originally a party hereto and shall be
bound by and entitled to the benefits of this Agreement.
<PAGE>

                                                                              28

          (f) Unless otherwise agreed by the Administrative Agent, the Borrower
shall borrow Revolving Loans under the additional Revolving Commitments provided
under Section 2.1(c) above from each Lender participating in the relevant
increase in an amount determined by reference to the amount of each Type of Loan
(and, in the case of Eurodollar Loans, of each Eurodollar Tranche) which would
then have been outstanding from such Lender if (i) each such Type or Eurodollar
Tranche had been borrowed or effected on such Increased Facility Closing Date
and (ii) the aggregate amount of each such Type or Eurodollar Tranche requested
to be so borrowed or effected had been proportionately increased.  The
Eurodollar Base Rate applicable to any Eurodollar Loan borrowed pursuant to the
preceding sentence shall equal the Eurodollar Base Rate then applicable to the
Eurodollar Loans of the other Lenders in the same Eurodollar Tranche (or, until
the expiration of the then-current Interest Period, such other rate as shall be
agreed upon between the Borrower and the relevant Lender).

          (g) On the Restatement Effective Date, any Revolving Loans outstanding
under, and as defined in, the Existing Credit Agreement shall continue
outstanding as Revolving Loans hereunder.

          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 2:00 P.M.,
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 Loan is to be borrowed, (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 under the
Revolving Facility shall be in an aggregate amount equal to (w) 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 (x) in the case of Eurodollar Loans, $5,000,000 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. Each
borrowing under the Delayed-Draw Term Facility shall be in an aggregate amount
equal to (y) 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 Delayed-Draw
Term Commitments are less than $5,000,000, such lesser amount) and (z) in the
case of Eurodollar Loans, $5,000,000 or a whole multiple of $1,000,000 in excess
thereof. Upon receipt of such notice the Administrative Agent shall promptly
notify each Lender thereof. Not later than 12:00 Noon, New York City time, on
the Borrowing Date requested by the Borrower, each Lender shall make available
to the Administrative Agent at the Funding Office an amount in immediately
available funds equal to the Loan to be made by such Lender. The Administrative
Agent shall credit the account of the Borrower on the books of such office of
the Administrative Agent with the aggregate of the amounts made available to the
Administrative Agent by the Lenders in immediately available funds.

          2.3. Repayment of Loans. (a) The Delayed-Draw Term Loans of each
          -----------------------
Delayed-Draw Term Lender shall mature in 20 quarterly installments, commencing
on March
<PAGE>

                                                                              29

31, 2003, each of which shall be in an amount equal to such Lender's Delayed-
Draw Term Percentage multiplied by the percentage of the Delayed-Draw Aggregate
Funded Amount set forth below opposite such installment:

          Installment                   Percentage
          -----------                   ----------
          March 31, 2003                   2.50%
          June 30, 2003                    2.50%
          September 30, 2003               2.50%
          December 31, 2003                2.50%
          March 31, 2004                   3.75%
          June 30, 2004                    3.75%
          September 30, 2004               3.75%
          December 31, 2004                3.75%
          March 31, 2005                   5.00%
          June 30, 2005                    5.00%
          September 30, 2005               5.00%
          December 31, 2005                5.00%
          March 31, 2006                   6.25%
          June 30, 2006                    6.25%
          September 30, 2006               6.25%
          December 31, 2006                6.25%
          March 31, 2007                   7.50%
          June 30, 2007                    7.50%
          September 30, 2007               7.50%
          December 31, 2007                7.50%

          (b) The Tranche B Term Loans of each Tranche B Term Lender shall
mature in 21 consecutive quarterly installments (each due on the last day of
each calendar quarter), commencing on March 31, 2003, each of which shall be in
an amount equal to such Lender's Tranche B Term Percentage multiplied by (i) in
the case of the first 20 such installments, 0.25% of the Tranche B Aggregate
Funded Amount and (ii) in the case of the last such installment (which shall be
due on March 31, 2008), 95.0% of the Tranche B Aggregate Funded Amount.

          (c) The Total Revolving Commitments shall be permanently reduced on
the last day of each fiscal year of TWTC set forth below by an aggregate amount
equal to the percentage of the Revolving Aggregate Committed Amount set forth
opposite such date:

          Fiscal Year              Percentage
          -----------              ----------
          2004                        5.0%
          2005                       15.0%
          2006                       30.0%
          2007                       50.0%

          (d)  (i)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
<PAGE>

                                                                              30

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.

               (ii) The Borrower shall repay all outstanding Revolving Loans on
the Revolving Termination 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 Revolving Commitments from time to time
during the Revolving Commitment Period by making swing line 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.

          (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
$500,000 or a whole multiple of $100,000 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 (unless in the notice of borrowing the Borrower
gives instructions that the funds
<PAGE>

                                                                              31

shall be wired to another account, in which case the funds shall be so wired to
the designated account prior to 3:00 P.M., New York City time).

          (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 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
<PAGE>

                                                                              32

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 commitment fee
for the period from and including the Restatement Effective 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, commencing on the first of such dates to occur after the date hereof.

          (b)  The Borrower agrees to pay to the Administrative Agent for the
account of each Delayed-Draw Term Lender a commitment fee for the period from
and including the Restatement Effective Date to the date on which the Delayed-
Draw Term Commitments have been fully utilized or terminated, computed at the
Commitment Fee Rate on the average daily amount of the Available Delayed-Draw
Term Commitments 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 date on which the Delayed-Draw Term Commitments have been
fully utilized or terminated, commencing on the first of such dates to occur
after the date hereof.

          (c)  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. Optional Termination or Reduction of Commitments. The Borrower
          -----------------------------------------------------
shall have the right, upon notice (or, when accompanied by a prepayment of ABR
Loans or Eurodollar Loans, not less than one or three Business Days' notice,
respectively) to the Administrative Agent, to terminate the Revolving
Commitments and Delayed-Draw Term Commitments or, from time to time, to reduce
the amount of the Revolving Commitments and Delayed-Draw Term 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 $1,000,000, or a
whole multiple thereof, and shall reduce ratably and permanently the Revolving
Commitments and Delayed-Draw Term Commitments then in effect.
<PAGE>

                                                                              33

          2.8. Optional Prepayments.  Subject to Section 2.9(d), 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
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 $1,000,000 or a whole multiple thereof. Partial
prepayments of Swingline Loans shall be in an aggregate principal amount of
$100,000 or a whole multiple thereof.

          2.9. Additional Mandatory Prepayments and Commitment Reductions. Until
          ---------------------------------------------------------------
the date on which the ratio of Consolidated Total Debt on such day to Annualized
Consolidated EBITDA for the most recent complete fiscal quarter of TWTC is less
than 4.00 to 1.0, the following mandatory prepayment provisions shall be
applicable and the Borrower shall apply the following amounts to prepay the Term
Loans and permanently reduce the Revolving Commitments and the Delayed-Draw Term
Commitments as follows:

          (a) Except to the extent required to refinance or replace any bridge
financings or Rollover Notes pursuant to the terms of any Additional Financing,
if any Capital Stock or Indebtedness shall be issued or incurred by TWTC or any
of its Subsidiaries (excluding any Indebtedness permitted under Section 7.2, the
Net Cash Proceeds of any issuance of TWTC's Capital Stock to the extent used to
finance the cost of capital expenditures permitted under Section 7.7 or the
business plan as described in the Confidential Information Memorandum) after the
Restatement Effective Date, 100% of the Net Cash Proceeds thereof shall be
applied on the date of such issuance or incurrence toward the prepayment of the
Term Loans and the reduction of the Revolving Commitments and the Delayed-Draw
Term Commitments as set forth in accordance with Section 2.9(d).

          (b) If on any date TWTC or any of its Subsidiaries shall receive Net
Cash Proceeds from any Asset Sale, Exchange or Recovery Event (which Net Cash
Proceeds, in the case of a Recovery Event, exceed $1,000,000) then, unless a
Reinvestment Notice shall be delivered in respect thereof, such Net Cash
Proceeds shall be applied within three Business Days after such date toward the
prepayment of the Term Loans and the reduction of the Revolving Commitments and
the Delayed-Draw Term Commitments as set forth in Section 2.9(d); provided,
                                                                  --------
that, notwithstanding the foregoing, (i) the aggregate Net Cash Proceeds of
Asset Sales, Exchanges and Recovery Events that may be excluded from the
foregoing requirement pursuant to a Reinvestment Notice shall not exceed
$30,000,000 at any time, other than with respect to Asset Sales permitted under
Section 7.5(i), at any time (in each case, after giving effect to any actual
reinvestment of such Net Cash Proceeds in accordance with a Reinvestment Notice)
and (ii) on each Reinvestment Prepayment Date, an amount equal to the
Reinvestment
<PAGE>

                                                                              34

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 and the Delayed-Draw Term Commitments as set forth in
Section 2.9(d).

         (c)  If, for any fiscal year of TWTC commencing with the 2003 fiscal
year, there shall be Excess Cash Flow, the Borrower shall, on the relevant
Excess Cash Flow Application Date, apply an amount equal to 50% of such Excess
Cash Flow toward the prepayment of the Term Loans and the reduction of the
Revolving Commitments and the Delayed-Draw Term 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 Business Days
            ---------------------------------
after the earlier of (i) the date on which the financial statements of TWTC
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 of Term Loans
and reductions of Revolving Commitments and Delayed-Draw Term Commitments made
pursuant to Section 2.9 shall be applied, first, to the prepayment of the Term
                                          -----
Loans and, second, to reduce ratably and permanently the Revolving Commitments
           ------
and the Delayed-Draw Term 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.

         (e)  Notwithstanding anything to the contrary in Section 2.8, 2.9(d) or
2.15, with respect to the amount of optional or mandatory prepayment described
in Section 2.8 and Section 2.9, respectively, that is allocated to Tranche B
Term Loans (such amount, the "Tranche B Prepayment Amount"), at any time when
                              ---------------------------
Delayed-Draw Term Loans remain outstanding, the Borrower will, in lieu of
applying automatically such amount to the prepayment of Tranche B Term Loans, as
provided in Section 2.8 or Section 2.9(d), as the case may be, at least five
Business Days prior to the date on which the Borrower expects to make such
prepayment, give the Administrative Agent telephonic notice (promptly confirmed
in writing) requesting that the Administrative Agent prepare and provide to each
Tranche B Term 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 Term Lender a
Prepayment Option Notice, which shall be in the form of Exhibit F, and shall
include an offer by the Borrower to prepay the relevant Tranche B Term Loans of
such Lender by an amount equal to such Lender's Tranche B Term Percentage
multiplied by the Tranche B
<PAGE>

                                                                              35

Prepayment Amount on the date of such expected prepayment (each, a "Prepayment
                                                                    ----------
Date"). Each Tranche B Term Lender shall give notice to the Administrative Agent
----
prior to the applicable Prepayment Date if it elects to accept all or any
portion of such prepayment, and each Tranche B Term Lender which has not
notified the Administrative Agent of whether or not it elects to accept such
prepayment shall be deemed to have accepted such prepayment. On the Prepayment
Date, (i) the Borrower shall pay to the relevant Tranche B Term Lenders that
have not expressly rejected their Prepayment Option Notice the amount indicated
in such Notice, and such amount shall be applied toward the prepayment of the
Tranche B Term Loans and (ii) the Borrower shall pay to the Delayed-Draw Term
Lenders an amount equal to the portion of the Tranche B Prepayment Amount
expressly rejected by the relevant Tranche B Term Lenders, and such amount shall
be applied toward the prepayment of the Delayed-Draw Term Loans.

         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 may be converted into a Eurodollar
                  --------
Loan 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
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 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 such Loans shall be automatically converted to ABR Loans 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 Loans.  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 $5,000,000 or a whole
multiple of $1,000,000 in excess thereof and (b) no more than 20 Eurodollar
Tranches shall be outstanding at any one time.
<PAGE>

                                                                              36

          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).

          (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.

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

                                                                              37

          (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
     Required Lenders 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) either the Borrower may withdraw any request for a borrowing
of Eurodollar Loans or any Eurodollar Loans requested to be made on the first
day of such Interest Period shall be made as ABR Loans, (y) any Loans 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
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 shall be made or continued as such, nor shall the
Borrower have the right to convert Loans 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 Commitments of the Lenders shall be
made pro rata according to the respective Delayed-Draw Term Percentages, Tranche
     --- ----
B Term Percentages or Revolving Percentages, as the case may be, of the relevant
Lenders.

          (b)  Each payment other than an optional prepayment (including each
mandatory 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 2.9(e)). The amount of each mandatory principal
prepayment of the Term Loans shall be applied to reduce the then remaining
installments of the Delayed-Draw Term Loans and Tranche B Term Loans, as the
case may be, pro rata based upon the then remaining principal amount thereof.
             --- ----
Notwithstanding anything to the contrary herein, each optional prepayment of the
Delayed-Draw Term Loans and Tranche B Term Loans shall be applied first, towards
                                                                  -----
the next scheduled installment payment of such Term Loans pursuant to Section
2.3 and second, to reduce the then remaining installments of such Term Loans pro
        ------                                                               ---
rata based upon the then remaining principal amount thereof.  Amounts paid 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.
<PAGE>

                                                                              38

          (d)  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.

          (e)  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, 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.

          (f)  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
<PAGE>

                                                                              39

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 date hereof:

          (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 actually incurred or reduced amount actually received. If
any Lender becomes entitled to claim any additional amounts pursuant to this
paragraph, it shall promptly (and, in any event, within three months) 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 regarding
capital adequacy (whether or not having the force of law) from any Governmental
Authority made subsequent to the date hereof 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 90 days 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 90-day period shall be
extended to include the period of such retroactive effect.
<PAGE>

                                                                              40

          (c)  A certificate, setting forth a reasonably detailed explanation as
to the reason for any additional amounts payable pursuant to this Section, as to
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") 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, 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 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.
<PAGE>

                                                                              41

          (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 G 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, 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)  A Lender that is entitled to an exemption from or reduction of
non-U.S. withholding tax under the law of the jurisdiction in which the Borrower
is located, or any treaty to which such jurisdiction is a party, with respect to
payments under this Agreement shall deliver to the Borrower (with a copy to the
Administrative Agent), at the time or times prescribed by applicable law or
reasonably requested by the Borrower, such properly completed and executed
documentation prescribed by applicable law as will permit such payments to be
made without withholding or at a reduced rate, provided that such Lender is
                                               --------
legally entitled to complete, execute and deliver such documentation and in such
Lender's judgment such completion, execution or submission would not materially
prejudice the legal position of such Lender.

          (f)  If any payee receives a refund of any Non-Excluded Taxes or Other
Taxes paid by the Borrower under this Section 2.17, which refund in the sole
judgment of such payee is allocable to such payment, such payee shall promptly
pay over to the Borrower the amount of such refund, net of all out-of-pocket
expenses of such payee; provided, however, that the Borrower, upon the request
                        --------  -------
of such payee, agrees to repay the amount paid over to the Borrower to such
payee in the event such Lender or the Administrative Agent is required to repay
such refund.

          (g)  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 may sustain
or incur 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
<PAGE>

                                                                              42

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 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 any 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 not have eliminated,
after requested to do so by the Borrower, 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
<PAGE>

                                                                              43

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, the 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
the Issuing Lender; provided that the Issuing Lender shall not 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 $500,000 (unless
otherwise agreed by the 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)  The Issuing Lender shall not issue any Letter of Credit
hereunder if such issuance would conflict with, or cause the Issuing Lender or
any L/C Participant to exceed any limits imposed by, any applicable Requirement
of Law.

              3.2.  Procedure for Issuance of Letter of Credit.  The Borrower
              ------------------------------------------------
may from time to time request that the Issuing Lender issue a Letter of Credit
by delivering to the Issuing Lender at its address for notices specified herein
an Application therefor, completed to the satisfaction of the Issuing Lender,
and such other certificates, documents and other papers and information as the
Issuing Lender may request. Upon receipt of any Application, the 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 the 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 the
Issuing Lender and the Borrower. The Issuing Lender shall furnish a copy of such
Letter of Credit to the Borrower or at its direction promptly following the
issuance thereof. The 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 Issuing Lender for its own account a
<PAGE>

                                                                              44

fronting fee of 0.25% per annum on the undrawn and unexpired 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 Issuing Lender for such normal and customary costs and expenses as
are incurred or charged by the Issuing Lender in issuing, negotiating, effecting
payment under, amending or otherwise administering any Letter of Credit.

          3.4.    L/C Participations.  (a)The Issuing Lender irrevocably
          --------------------------
agrees to grant and hereby grants to each L/C Participant, and, to induce the
Issuing Lender to issue Letters of Credit hereunder, each L/C Participant
irrevocably agrees to accept and purchase and hereby accepts and purchases from
the 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 the Issuing Lender's obligations and
rights under and in respect of each Letter of Credit issued hereunder and the
amount of each draft paid by the Issuing Lender thereunder. Each L/C Participant
unconditionally and irrevocably agrees with the Issuing Lender that, if a draft
is paid under any Letter of Credit for which the 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 the Issuing Lender upon demand at
the 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 the
Issuing Lender pursuant to Section 3.4(a) in respect of any unreimbursed portion
of any payment made by the Issuing Lender under any Letter of Credit is paid to
the Issuing Lender within three Business Days after the date such payment is
due, such L/C Participant shall pay to the 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 the
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 Issuing Lender by such L/C Participant
within three Business Days after the date such payment is due, the 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
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 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), the 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 the
Issuing Lender), or any payment of interest on account thereof, the 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 the
--------  -------
Issuing Lender shall be required to be

<PAGE>

                                                                              45

returned by the Issuing Lender, such L/C Participant shall return to the Issuing
Lender the portion thereof previously distributed by the Issuing Lender to it.

          3.5.  Reimbursement Obligation of the Borrower.  The Borrower agrees
          ----------------------------------------------
to reimburse the Issuing Lender on each date on which the Issuing Lender
notifies the Borrower of the date and amount of a draft presented under any
Letter of Credit and paid by the Issuing Lender for the amount of (a) such draft
so paid and (b) any taxes, fees, charges or other costs or expenses incurred by
the Issuing Lender in connection with such payment. Each such payment shall be
made to the 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 such amounts become payable (whether at stated maturity,
by acceleration or otherwise) until payment in full at the rate set forth in (i)
until the second Business Day following the date of the applicable drawing,
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 the Issuing Lender, any beneficiary of a
Letter of Credit or any other Person. The Borrower also agrees with the Issuing
Lender that the Issuing Lender shall not 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. The Issuing Lender
shall not 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 Issuing Lender. The Borrower agrees that any action taken or omitted by the
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 the 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 Issuing Lender shall promptly notify the
Borrower of the date and amount thereof. The responsibility of the 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 under such Letter of Credit in
connection with such presentment are substantially in conformity with such
Letter of Credit.
<PAGE>

                                                                              46

          3.8.  Applications.  To the extent that any provision of an
          ------------------
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, TWTC and the Borrower hereby jointly and severally represent and warrant
to the Administrative Agent and each Lender that:

          4.1.  Financial Condition.  (a)The unaudited pro forma consolidated
          -------------------------                    --- -----
balance sheet of TWTC and its consolidated Subsidiaries as at June 30, 2000
(including the notes thereto) (the "Pro Forma Balance Sheet"), 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 consummation of the
Acquisition, (ii) the Loans expected to be made on the Restatement Effective
Date as of the date on which the Pro Forma Balance Sheet was delivered and
certain Additional Financing in connection with the Acquisition and/or the
business plan of TWTC as described in the Confidential Information Memorandum
and the use of proceeds thereof and (iii) the payment of fees and expenses in
connection with the foregoing. The Pro Forma Balance Sheet has been prepared
based on information and assumptions believed by TWTC to be reasonable as of the
date of delivery thereof, and presents fairly, based on such information and
assumptions, on a pro forma basis the estimated financial position of TWTC and
                  --- -----
its consolidated Subsidiaries as at June 30, 2000, assuming that the events
specified in the preceding sentence had actually occurred at such date.

          (b)  The audited consolidated balance sheets of TWTC as at December
31, 1998 and December 31, 1999, and the related consolidated statements of
income and of cash flows for the fiscal years ended on such dates, reported on
by and accompanied by an unqualified report from Ernst & Young LLP, present
fairly the consolidated financial condition of TWTC as at such date, and the
consolidated results of its operations and its consolidated cash flows for the
respective fiscal years then ended. The unaudited consolidated balance sheet of
TWTC as at June 30, 2000, 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 TWTC 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 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). TWTC 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 June
30, 2000 to and including the date hereof there has been
<PAGE>

                                                                              47

no Disposition by TWTC or any of its Subsidiaries of any material part of its
business or property.

          4.2.  No Change.  Since June 30, 2000, there has been no development
          ---------------
or event that has had or could reasonably be expected to have a Material Adverse
Effect.

          4.3.  Existence; Compliance with Law.  Each of TWTC and its
          ------------------------------------
Subsidiaries (a) is duly organized, validly existing and in good standing under
the laws of the jurisdiction of its organization, (b) has the power and
authority under its constitutive documents, 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, partnership or limited liability company, as the case may
be, 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 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.  Power; Authorization; Enforceable Obligations.  Each Loan Party
          ---------------------------------------------------
has the power and authority under its constitutive documents, 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 organizational action under its constitutive
documents 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
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 unless otherwise
indicated on Schedule 4.4 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).

          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 TWTC or any of its
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
permitted under Section 7.3). No Requirement of Law or Contractual Obligation
applicable to TWTC or any of its Subsidiaries could reasonably be expected to
have a Material Adverse Effect.
<PAGE>

                                                                              48

          4.6.  Litigation.  No litigation, investigation or proceeding of or
          ----------------
before any arbitrator or Governmental Authority is pending or, to the knowledge
of TWTC or the Borrower, threatened by or against TWTC or any of its
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 TWTC nor any of its 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 TWTC and its 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. TWTC has no Lien on the assets of any of its limited partnership
Subsidiaries pursuant to its limited partnership interests or otherwise and any
claim or interest that TWTC has in such assets is subordinated and junior in
right to that of the Lenders.

          4.9.  Intellectual Property.  TWTC and each of its 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
TWTC or any of its Subsidiaries know of any valid basis for any such claim. The
use of Intellectual Property by TWTC and its Subsidiaries does not infringe on
the rights of any Person in any material respect.

          4.10. Taxes.  Each of TWTC and its 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 TWTC or its
Subsidiaries, as the case may be); no tax Lien has been filed, and, to the
knowledge of TWTC and the Borrower, no claim is being asserted, with respect to
any such tax, fee or other charge (except, in each case, for taxes in respect of
GST or its affiliates in an aggregate amount not to exceed the amount held back
from the purchase price paid by TWTC to GST and its affiliates in connection
with the Acquisition).

          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
<PAGE>

                                                                              49

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.

          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 TWTC or any of its Subsidiaries pending
or, to the knowledge of TWTC or the Borrower, threatened; (b) hours worked by
and payment made to employees of TWTC and its 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 TWTC or any of its
Subsidiaries on account of employee health and welfare insurance have been paid
or accrued as a liability on the books of TWTC or the relevant Subsidiary.

          4.13. ERISA.  Neither a Reportable Event with respect to a Plan which,
          -----------
if terminated, would result in material liability 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, in either
case with respect to which the Borrower has any outstanding liability. 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 a material amount. Neither the Borrower 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 which has not been satisfied as of the date hereof, and neither the
Borrower nor any Commonly Controlled Entity would to the knowledge of the
Borrower become subject to any material liability under ERISA if the Borrower 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 the Borrower 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'
<PAGE>

                                                                              50

qualifying shares) of any nature relating to any Capital Stock of the Borrower
or any Subsidiary of TWTC, except as created by the Loan Documents.

          4.16. Use of Proceeds.  The proceeds of the Term Loans shall be used
          ---------------------
to finance the Acquisition and to pay related fees and expenses. The remaining
portion of the proceeds of the Term Loans, if any, and the proceeds of the
Revolving Loans, the Swingline Loans and the Letters of Credit shall be used for
general corporate purposes, working capital needs, including permitted
acquisitions and investments, and to fund the construction, expansion,
development or acquisition of properties or assets to be utilized directly or
indirectly, for the design, development, construction, installation,
integration, management or provision of any telecommunications business,
including voice, video, internet and data transmission products, services and
systems, fiber network construction and any business reasonably related to the
foregoing.

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

          (a)  the facilities and properties owned, leased or operated by TWTC
     or any of its Subsidiaries (the "Properties") do not contain any Materials
                                      ----------
     of Environmental Concern in amounts or concentrations or under
     circumstances that constitute a violation of, or could reasonably be
     expected to give rise to liability under, any Environmental Law;

          (b)  neither TWTC nor any of its Subsidiaries has received any written
     notice of any violation, alleged violation, liability or potential
     liability regarding environmental matters or compliance with Environmental
     Laws with regard to any of the Properties or the business operated by TWTC
     or any of its Subsidiaries (the "Business"), nor does TWTC or the Borrower
                                      --------
     have knowledge that any such notice will be received or is being
     threatened;

          (c)  Materials of Environmental Concern have not been transported or
     disposed of from the Properties in violation of, or in a manner or to a
     location that could reasonably be expected to give rise to liability under,
     any Environmental Law, nor have any Materials of Environmental Concern been
     generated, treated, stored or disposed of at, on or under any of the
     Properties in violation of, or in a manner that could reasonably be
     expected to give rise to liability under, any applicable Environmental Law;

          (d)  no judicial proceeding or governmental or administrative action
     is pending or, to the knowledge of TWTC and the Borrower, threatened, under
     any Environmental Law to which TWTC or any Subsidiary is or will be named
     as a party 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 any Environmental Law with respect to the
     Properties or the Business;

          (e)  there has been no release or threat of release of Materials of
     Environmental Concern at or from the Properties, or arising from or related
     to the operations of TWTC or any Subsidiary in connection with the
     Properties or otherwise in connection with the
<PAGE>

                                                                              51

     Business, in violation of or in amounts or in a manner that could give rise
     to liability under Environmental Laws; and

          (f)  the Properties and all operations at the Properties or otherwise
     in respect to the Business are in compliance, and have in the last five
     years been 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 date of this Agreement), any
untrue statement of a material fact or omitted to state a material fact
necessary to make the statements contained herein or therein, when taken as a
whole and in conjunction with TWTC's public filings and disclosures, not
misleading. The projections contained in the materials referenced above are
based upon good faith estimates and assumptions believed by management of TWTC
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. To the best knowledge of TWTC and the Borrower, as of the
Restatement Effective Date, the representations and warranties contained in the
GST Asset Purchase Agreement are true and correct in all material respects.
There is no fact known to any Loan Party that could reasonably be expected to
have a Material Adverse Effect that has not been expressly disclosed herein, in
the other Loan Documents, in the Confidential Information Memorandum or in any
other documents, certificates and statements furnished to the Administrative
Agent and the Lenders for use in connection with the transactions contemplated
hereby and by the other Loan Documents.

          4.19. Security Documents.  The Guarantee and Collateral Agreement is
          ------------------------
effective to create or continue 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 3 to the Guarantee and Collateral Agreement in appropriate form are
filed in the offices specified on Schedule 3 to the Guarantee and Collateral
Agreement, 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 to the extent
perfection may be accomplished by the filing of such financing statements and
other filings, as security for the Obligations (as 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).
<PAGE>

                                                                              52

          4.20. Solvency.  Except for any Shell Subsidiaries, each Loan Party
          --------------
is, and after giving effect to the Acquisition and the incurrence of all
Indebtedness and obligations being incurred in connection herewith and therewith
will be and will continue to be, Solvent.

          4.21. Certain Documents.  The Borrower has delivered to the
          -----------------------
Administrative Agent a complete and correct copy of the GST Asset Purchase
Agreement, including any amendments, supplements or modifications with respect
to any of the foregoing.

                        SECTION 5. CONDITIONS PRECEDENT

          5.1.  Conditions to the Initial Extension of Credit on or After
          ---------------------------------------------------------------
the Restatement Effective Date.  The agreement of each Lender to make the
------------------------------
initial extension of credit requested to be made by it is subject to the
satisfaction, prior to or concurrently with the making of such extension of
credit on the Restatement Effective Date, of the following conditions precedent:

          (a)  Guarantee and Collateral Agreement.  The Administrative Agent
          ---------------------------------------
     shall have received (i) the Guarantee and Collateral Agreement, executed
     and delivered by TWTC, the Borrower and each Subsidiary Guarantor and (ii)
     an Acknowledgment and Consent in the form attached to the Guarantee and
     Collateral Agreement, executed and delivered by each Issuer (as defined
     therein), if any, that is not a Loan Party.

          (b)  Additional Financing.  The Administrative Agent shall have
          -------------------------
     received evidence, in form, scope and substance reasonably satisfactory to
     the Administrative Agent and the Arranger, that TWTC shall have received
     cash proceeds of the Additional Financing in an aggregate amount of no less
     than $700,000,000, and that all such funds shall have been made available.

          (c)  Approvals.  All material governmental and third party approvals
          --------------
     (other than in connection with the consummation of the Acquisition)
     necessary or, in the reasonable discretion of the Administrative Agent,
     advisable in connection with the continuing operations of TWTC and its
     Subsidiaries and the transactions contemplated hereby shall have been
     obtained and be in full force and effect, and all applicable waiting
     periods shall have expired without any action being taken or threatened by
     any competent authority that would restrain, prevent or otherwise impose
     adverse conditions on the financing contemplated hereby.

          (d)  Closing Certificate.  The Administrative Agent shall have
          ------------------------
     received, with a counterpart for each Lender, a certificate of each Loan
     Party, dated the Restatement Effective Date, substantially in the form of
     Exhibit C, with appropriate insertions and attachments.

          (e)  Legal Opinions.  The Administrative Agent shall have received the
          -------------------
     following executed legal opinions:
<PAGE>

                                                                              53

               (i)    the legal opinion of Cravath, Swaine & Moore, counsel to
          TWTC and its Subsidiaries, in form and substance reasonably
          satisfactory to the Administrative Agent;

               (ii)   the legal opinion of Paul B. Jones, Esq., general counsel
          of TWTC and its Subsidiaries, in form and substance reasonably
          satisfactory to the Administrative Agent; and

               (iii)  the legal opinion of local counsel and of such other
          special counsel as may be required by the Administrative Agent.

     Each such legal opinion shall cover such other matters incident to the
     transactions contemplated by this Agreement as the Administrative Agent may
     reasonably require.

          (f)  Lien Searches.  The Administrative Agent shall have received the
          ------------------
     results of a recent Uniform Commercial Code lien search in each relevant
     jurisdiction with respect to the assets to be owned by TWTC and its
     Subsidiaries as of the Restatement Effective Date, and such search shall
     reveal no liens on any of the assets of TWTC or its Subsidiaries 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.

          (g)  Pledged Stock; Stock Powers; Pledged Notes.  The Administrative
          -----------------------------------------------
     Agent shall have received (i) the certificates representing the shares of
     Capital Stock pledged pursuant to the Guarantee and Collateral Agreement,
     together with an undated indorsement for each such certificate executed in
     blank by an appropriate person and (ii) each promissory note (if any)
     pledged to the Administrative Agent pursuant to the Guarantee and
     Collateral Agreement endorsed (without recourse) in blank (or accompanied
     by an executed transfer form in blank) by the pledgor thereof.

          (h)  Filings, Registrations and Recordings.  Each document (including
          ------------------------------------------
     any Uniform Commercial Code financing statement) required by the Security
     Documents or under law or reasonably requested by the Administrative Agent
     to be filed, registered or recorded in order to create in favor of the
     Administrative Agent, for the benefit of the Lenders, a perfected Lien on
     the Collateral described therein, prior and superior in right to any other
     Person (other than with respect to Liens expressly permitted by Section
     7.3), shall be in proper form for filing, registration or recordation.

          (i)  Insurance.  The Administrative Agent shall have received
          --------------
     insurance certificates satisfying the requirements of Section 5.2(b) of the
     Guarantee and Collateral Agreement.

          (j)  Fees.  The Lenders and the Administrative Agent 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.
<PAGE>

                                                                              54

          (k)  Intercompany Debt.  All Indebtedness of the Borrower or any
          ----------------------
     Subsidiary to TWTC shall be evidenced by an Intercompany Subordinated Note.

          (l)  Pro Forma Balance Sheet; Financial Statements.  The Lenders shall
          --------------------------------------------------
     have received (i) the Pro Forma Balance Sheet and (ii) the financial
     statements referred to in Section 4.1(b).

          (m)  Other Documents.  The Administrative Agent shall have received
          --------------------
     such other documents or materials (including, without limitation,
     additional lien searches) as the Administrative Agent shall reasonably
     request.

          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 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.

          (c)  No Violation of the Indenture.  TWTC shall certify that the
          ----------------------------------
     making of such extension of credit shall not violate any provision of the
     Indenture (it being understood that such certification may be contained in
     the notice of borrowing).

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

          TWTC and the Borrower 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 TWTC and the Borrower shall and shall cause each of its
Subsidiaries to:

          6.1.  Financial Statements.  Furnish to the Administrative Agent for
          --------------------------
duplication and distribution to the Lenders:

          (a)  as soon as available, but in any event within 95 days after the
     end of each fiscal year of TWTC, a copy of the audited consolidated balance
     sheet of TWTC 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
<PAGE>

                                                                              55

     concern" or like qualification or exception, or qualification arising out
     of the scope of the audit, by Ernst & Young LLP or other independent
     certified public accountants of nationally recognized standing; and

          (b)  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 TWTC, the unaudited consolidated balance sheet of TWTC 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 adjustments).

All such financial statements, together with the notes thereto, shall be
complete and correct in all material respects and shall be prepared in
reasonable detail and 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 TWTC
posts such financial statement on its website on the Internet at
www.twtelecom.com or when such financial statement is posted on the SEC's
website on the Internet at www.sec.gov; provided that TWTC 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 TWTC 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 TWTC 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 for duplication and distribution to the Lenders (or, in the case of clause
(f), to the relevant Lender):

          (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, 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
<PAGE>

                                                                              56

     determining compliance by TWTC and its Subsidiaries with the provisions of
     this Agreement referred to therein as of the last day of the fiscal quarter
     or fiscal year of TWTC, as the case may be, including, without limitation,
     a report as to the status of availability of the exception to the
     indebtedness covenant contained in the Indenture (the "Indenture
                                                            ---------
     Indebtedness Basket") permitting $300,000,000 of indebtedness (including a
     -------------------
     statement as to the amount of the Loans outstanding under this Agreement
     that are permitted to be outstanding under the exception contained in
     Section 4.03(a)(vii) of the Indenture relating to the acquisition of
     certain assets) and (y) to the extent not previously disclosed to the
     Administrative Agent, a listing of any county or state within the United
     States where any Loan Party keeps inventory or equipment and of any
     Intellectual Property acquired by any Loan Party since the date of the most
     recent list delivered pursuant to this clause (y) (or, in the case of the
     first such list so delivered, since the Restatement Effective Date);

          (c) as soon as available, and in any event no later than 50 days after
     the end of each fiscal year of TWTC, a detailed consolidated budget for the
     following fiscal year (including a projected consolidated balance sheet of
     TWTC and its Subsidiaries as of the end of the following fiscal year, the
     related consolidated statements of projected cash flow 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 are
     based on reasonable estimates, information and assumptions believed by TWTC
     to be reasonable at the time made and that such Responsible Officer has no
     reason to believe that such Projections are incorrect or misleading in any
     material respect (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) no later than 10 Business Days prior to the effectiveness thereof,
     copies of substantially final drafts of any proposed amendment, supplement,
     waiver or other modification with respect to the Indenture;

          (e) within five days after the same are sent, copies of all financial
     statements and reports that TWTC or the Borrower 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 TWTC or the Borrower 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 through the Administrative
     Agent.

          Any delivery required to be made pursuant to Section 6.2(e) shall be
deemed to have been made on the date on which TWTC posts such delivery on its
website on the Internet at
<PAGE>

                                                                              57

www.twtelecom.com or when such delivery is posted on the SEC's website on the
Internet at www.sec.gov; provided that TWTC 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 TWTC shall deliver paper copies
                         --------  -------
of any delivery referred to in Section 6.2(e) to the Administrative Agent if the
Administrative Agent or any Lender requests TWTC 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 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 TWTC or its Subsidiaries, as the case may be.

          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.

          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 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 to
discuss the business, operations, properties and financial and other condition
of TWTC and its Subsidiaries with officers and employees of TWTC and its
Subsidiaries and with its independent certified public accountants.

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

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

          (b) any (i) default or event of default under any Contractual
     Obligation of TWTC or any of its Subsidiaries or (ii) litigation,
     investigation or proceeding that may
<PAGE>

                                                                              58
     exist at any time between TWTC or any of its Subsidiaries and any
     Governmental Authority, that in either case, 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 TWTC or any of its
     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 a Responsible Officer knows or has reason to know thereof:
     (i) the occurrence of any Reportable Event with respect to any Plan, a
     failure by the Borrower or any Commonly Controlled Entity 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 the Borrower
     or any Commonly Controlled Entity or any Multiemployer Plan with respect to
     the withdrawal from, or the termination, Reorganization or Insolvency of,
     any Plan; provided that in the case of either clause (i) or (ii) above,
               --------
     such event or events could reasonably be expected to result in liability in
     excess of $5,000,000; 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 TWTC 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 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 other 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. Additional Collateral, etc. (a) With respect to any property
          -------------------------------
acquired after the Restatement Effective Date by any of TWTC's Subsidiaries
(other than (x) any property described in paragraph (b), (c) or (d) below, (y)
any property subject to a Lien expressly permitted by Section 7.3(g), and (z)
property acquired by any Excluded Foreign Subsidiary) as to
<PAGE>

                                                                              59

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 to the Guarantee and Collateral Agreement 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 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 first priority
security interest in such property, including the filing of Uniform Commercial
Code financing statements in such jurisdictions as may be required by the
Guarantee and Collateral Agreement or by law or as may be requested by the
Administrative Agent.

          (b) With respect to any fee interest in any real property having a
value (together with improvements thereof) of at least $1,000,000 (net of any
amount of any third party mortgage on such property existing when acquired)
acquired after the Restatement Effective Date by any of TWTC's Subsidiaries
(other than (x) any such real property subject to a Lien expressly permitted by
Section 7.3(g) and (z) real property acquired by any Excluded Foreign
Subsidiary), promptly (i) execute and deliver a first priority mortgage, in form
and substance reasonably satisfactory to the Administrative Agent, in favor of
the Administrative Agent, for the benefit of the Lenders, covering such real
property, (ii) if requested by the Administrative Agent, provide the Lenders
with (x) title and extended coverage insurance covering such real property in an
amount at least equal to the purchase price of such real property (or such other
amount as shall be reasonably specified by the Administrative Agent) as well as
a current ALTA or equivalent survey thereof, together with a surveyor's
certificate and (y) any consents or estoppels reasonably deemed necessary or
advisable by the Administrative Agent in connection with such mortgage or deed
of trust, each of the foregoing in form and substance reasonably satisfactory to
the Administrative Agent and (iii) 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.

          (c) With respect to any new Subsidiary (other than an Excluded Foreign
Subsidiary) created or acquired after the Restatement Effective Date by TWTC or
any of its Subsidiaries (which, for the purposes of this paragraph (c), shall
include any existing Subsidiary that ceases to be an Excluded Foreign
Subsidiary), promptly (i) execute and deliver to the Administrative Agent such
amendments to the Guarantee and Collateral Agreement as the Administrative Agent
deems necessary or advisable to grant to the Administrative Agent, for the
benefit of the Lenders, a perfected first priority security interest in the
Capital Stock of such new Subsidiary that is owned by TWTC or any of its
Subsidiaries, (ii) deliver to the Administrative Agent the certificates
representing such Capital Stock, together with undated indorsements, in blank,
executed and delivered by an appropriate person of TWTC or such Subsidiary, as
the case may be, (iii) cause such new Subsidiary (A) to become a party to the
Guarantee and Collateral Agreement, (B) to take such actions necessary or
advisable to grant to the Administrative Agent for the benefit of the Lenders a
perfected first priority security interest in the Collateral described in the
Guarantee and Collateral Agreement with respect to such new Subsidiary,
including the filing of Uniform Commercial Code financing statements in such
jurisdictions as may be required by the Guarantee and Collateral Agreement or by
law or as may be requested by the Administrative Agent and (C) to deliver to the
Administrative Agent a certificate of such
<PAGE>

                                                                              60

Subsidiary, substantially in the form of Exhibit C, with appropriate insertions
and attachments, and (iv) if reasonably requested by the Administrative Agent
(and consistent with the opinion coverage provided on the Restatement Effective
Date), 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.

          (d) With respect to any new Excluded Foreign Subsidiary created or
acquired after the Restatement Effective Date by TWTC or any of its
Subsidiaries, promptly (i) execute and deliver to the Administrative Agent such
amendments to the Guarantee and Collateral Agreement as the Administrative Agent
deems necessary or advisable to grant to the Administrative Agent, for the
benefit of the Lenders, a perfected first priority security interest in the
Capital Stock of such new Subsidiary that is owned by TWTC or any of its
Subsidiaries (provided that in no event shall more than 65% of the total
              --------
outstanding Capital Stock of any such new Subsidiary be required to be so
pledged), (ii) deliver to the Administrative Agent the certificates representing
such Capital Stock, together with undated indorsements, in blank, executed and
delivered by an appropriate person of TWTC or such Subsidiary, as the case may
be, and take such other action as may be necessary or, in the opinion of the
Administrative Agent, desirable to perfect the Administrative Agent's security
interest therein, and (iii) if reasonably requested by the Administrative Agent
(and consistent with the opinion coverage provided on the Restatement Effective
Date), 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.

                         SECTION 7. NEGATIVE COVENANTS

          TWTC and the Borrower 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 TWTC and the Borrower shall not, and shall not permit any of
its Subsidiaries to, directly or indirectly:

          7.1.  Financial Condition Covenants.
          -----------------------------------

          (a) Senior Leverage Ratio.  Permit the Senior Leverage Ratio as of the
              ---------------------
last day of any fiscal quarter of TWTC during the period set forth below to
exceed the ratio set forth below opposite such period:

                                                                Senior
          Period                                            Leverage Ratio
          ------                                            --------------
          Restatement Effective Date -06/30/01               5.00 to 1.0
          06/30/01
          07/01/01 - 12/31/01                                4.50 to 1.0
          01/01/02 - 06/30/02                                4.00 to 1.0
          07/01/02 - 12/31/02                                3.50 to 1.0
          01/01/03 - thereafter                              3.00 to 1.0
<PAGE>

                                                                              61

          (b) Consolidated Leverage Ratio. Permit the Consolidated Leverage
              ---------------------------
Ratio as of the last day of any fiscal quarter of TWTC during the period set
forth below to exceed the ratio set forth below opposite such period:

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

          Restatement Effective Date -03/31/01             16.00 to 1.0
          04/01/01 - 06/30/01                              15.00 to 1.0
          07/01/01 - 09/30/01                              13.00 to 1.0
          10/01/01 - 12/31/01                              12.00 to 1.0
          01/01/02 - 03/31/02                              10.00 to 1.0
          04/01/02 - 06/30/02                               8.00 to 1.0
          07/01/02 - 09/30/02                               7.00 to 1.0
          10/01/02 - 12/31/02                               6.00 to 1.0
          01/01/03 - 03/31/03                               5.50 to 1.0
          04/01/03 - thereafter                             5.00 to 1.0

          (c) Consolidated Interest Coverage Ratio.  Permit the Consolidated
              ------------------------------------
Interest Coverage Ratio for any period of four consecutive fiscal quarters of
TWTC ending with any fiscal quarter during the period set forth below to be less
than the ratio set forth below opposite such period:

                               Consolidated Interest
          Period                   Coverage Ratio
          ------                   --------------

          07/01/02 - 09/30/02        1.00 to 1.0
          10/01/02 - 12/31/02        1.25 to 1.0
          01/01/03 - 06/30/03        1.50 to 1.0
          07/01/03 - thereafter      2.00 to 1.0

          (d) Consolidated Debt Service Coverage Ratio.  Permit the Consolidated
              ----------------------------------------
Debt Service Coverage Ratio determined as of the last day of any fiscal quarter
of TWTC ending on or after December 31, 2004 to be less than 1.50 to 1.0.

          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 or
     under the Incremental Facility, if any;

          (b) Indebtedness of the Borrower to any Subsidiary and of any Wholly
     Owned Subsidiary Guarantor to the Borrower or any other Subsidiary;

          (c) Guarantee Obligations incurred in the ordinary course of business
     (i) by the Borrower or any of its Subsidiaries of obligations of any Wholly
     Owned Subsidiary
<PAGE>

                                                                              62

     Guarantor and (ii) by TWTC of obligations of its Subsidiaries with respect
     to such Subsidiaries' real estate leases;

          (d) Indebtedness outstanding on the date hereof 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);

          (e) Indebtedness (including, without limitation, Capital Lease
     Obligations other than the Capital Lease Obligations assumed pursuant to
     the GST Asset Purchase Agreement) secured by Liens permitted by Section
     7.3(g) in an aggregate principal amount not to exceed $30,000,000 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 TWTC (but not any Subsidiary of TWTC) so long as
     (i) no Default or Event of Default has occurred and is continuing or would
     result therefrom, (ii) such Indebtedness shall not mature prior to the date
     that is one year after the final maturity date of the Loans and the
     expiration of the Commitments hereunder, (iii) the Net Cash Proceeds
     thereof shall be contributed to the Borrower as either equity or debt to
     the extent TWTC has cash and Cash Equivalents in excess of $25,000,000 in
     the aggregate (provided that to the extent contributed as debt, such debt
                    --------
     shall be evidenced by an Intercompany Subordinated Note), (iv) after giving
     effect to the incurrence thereof, TWTC shall be in pro forma compliance
                                                        --- -----
     with the covenants contained in Section 7.1 and (v) such Indebtedness shall
     not constitute utilization of the Indenture Indebtedness Basket to the
     extent TWTC reasonably expects to need availability under such basket for
     Loans;

          (h) Indebtedness of any Subsidiary acquired in connection with any
     Investment permitted pursuant to Section 7.8(i), provided that (i) no
                                                      --------
     Default or Event of Default has occurred and is continuing or would result
     therefrom, (ii) such Indebtedness existed at the time such Person became a
     Subsidiary and was not incurred in anticipation thereof, (iii) no Person
     other than such Subsidiary becomes an obligor in respect of such
     Indebtedness and (iv) the aggregate amount of such Indebtedness in excess
     of $20,000,000 (whether or not subsequently repaid) shall constitute usage
     of the basket provided in Section 7.8(i) unless and until such Subsidiary
     becomes a Wholly Owned Subsidiary Guarantor, at which time such
     Indebtedness of such Subsidiary in excess of $20,000,000 shall no longer be
     permitted to remain outstanding and shall no longer constitute usage of
     such baskets;

          (i) Indebtedness consisting of guaranties of loans made to officers,
     directors or employees of TWTC or any Subsidiary of TWTC in an aggregate
     amount which, when added to the outstanding principal amount of loans and
     advances made pursuant to Section 7.8(d), shall not exceed $5,000,000 at
     any one time outstanding;
<PAGE>

                                                                              63

          (j) Indebtedness of TWTC to the Borrower in connection with dividends,
     distributions or advancements made pursuant to clauses (b), (c), (d), (e),
     (f) or (g) of Section 7.6;

          (k) Indebtedness of the Borrower or any Wholly Owned Subsidiary
     Guarantor to TWTC evidenced by an Intercompany Subordinated Note;

          (l) 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);

          (m) reimbursement obligations incurred in the ordinary course of
     business related to performance bonds posted in connection with the
     installation of fiber facilities and similar activities in an aggregate
     amount not to exceed $20,000,000 at any one time outstanding;

          (n) additional Indebtedness of the Borrower or any of its Subsidiaries
     in an aggregate principal amount (for the Borrower and all Subsidiaries)
     not to exceed $30,000,000 at any one time outstanding;

          (o) any Additional Financing so long as (i) no Default or Event of
     Default has occurred and is continuing or would result therefrom (other
     than in connection with any refinancings of any bridge financing, including
     the issuance of any Rollover Notes), (ii) such Indebtedness (other than
     bridge financings in effect on the date hereof which would allow TWTC to
     convert such bridge financings into Indebtedness that would be in
     compliance with this paragraph) shall not mature or be redeemable prior to
     the date that is one year after the final maturity date of the Loans and
     the expiration of the Commitments hereunder, (iii) to the extent the Net
     Cash Proceeds thereof are not (x) being used to finance the Acquisition,
     (y) required to be applied towards the repayment of any bridge financing
     pursuant to the terms of such bridge financing or (z) being used to
     refinance any Rollover Notes, the Net Cash Proceeds thereof shall be
     contributed to the Borrower as either equity or debt to the extent TWTC has
     cash and Cash Equivalents in excess of $25,000,000 in the aggregate
     (provided that to the extent contributed as debt, such debt shall be
      --------
     evidenced by an Intercompany Subordinated Note), (iv) after giving effect
     to the incurrence thereof, TWTC shall be in pro forma compliance with the
                                                 --- -----
     covenants contained in Section 7.1 (other than in connection with any
     refinancings of any bridge financing, including the issuance of any
     Rollover Notes) and (v) such Indebtedness shall not constitute utilization
     of the Indenture Indebtedness Basket to the extent TWTC reasonably expects
     to need availability under such basket for Loans; and

          (p) Indebtedness (including, without limitation, Capital Lease
     Obligations) assumed pursuant to the GST Asset Purchase Agreement in an
     aggregate principal amount not to exceed $30,000,000 at any one time
     outstanding.

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

                                                                              64

          (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 the Borrower 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 are not
     overdue for a period of more than 30 days 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 incurred in the ordinary course of business 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 the
     Borrower or any of its Subsidiaries;

          (f) Liens in existence on the date hereof 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;

          (g) Liens securing Indebtedness of the Borrower or any other
     Subsidiary incurred pursuant to Section 7.2(e) to finance the acquisition
     of fixed or capital assets, provided that (i) such 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 under any lease entered into by
     the Borrower 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 date hereof securing Indebtedness permitted by Section
     7.2(h), 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
<PAGE>

                                                                              65

     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) 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 the
     Borrower and all Subsidiaries) $5,000,000 at any one time; and

          (l) Permitted Encumbrances with respect to the Assets.

          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 the Borrower may be merged or consolidated with
     or into the Borrower (provided that the Borrower 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);

          (b) any Subsidiary of the Borrower may Dispose of any or all of its
     assets (upon voluntary liquidation or otherwise) to the Borrower or any
     Wholly Owned Subsidiary Guarantor; and

          (c) any Shell Subsidiary may be dissolved.

          7.5. Disposition of Property. Dispose of any of its property, whether
          ----------------------------
now owned or hereafter acquired, or issue or sell any shares of its Capital
Stock to any Person, except:

          (a) the Disposition of obsolete 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 and Cash Equivalents for fair value; the license of
     intellectual property in the ordinary course of business; and leases and
     subleases with respect to excess capacity and not materially interfering
     with the ordinary conduct of business;

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

          (d) the sale or issuance of TWTC's common stock or preferred stock to
     any Person, provided that (i) to the extent the Net Cash Proceeds thereof
                 --------
     are not (a) required to be applied towards the repayment of any bridge
     financing described in the definition of Additional Financing pursuant to
     the terms of such bridge financing, (b) being used to
<PAGE>

                                                                              66

     replace or refinance any Rollover Notes or (c) being used for any purpose
     permitted under Section 7.9, the Net Cash Proceeds thereof shall be
     contributed to the Borrower as either equity or debt to the extent TWTC has
     cash and Cash Equivalents in excess of $25,000,000 in the aggregate
     (provided that to the extent contributed as debt, such debt shall be
      --------
     evidenced by an Intercompany Subordinated Note) and (ii) if such preferred
     stock constitutes Cash Pay Preferred Stock, it is issued in compliance with
     Section 7.2;

          (e) the sale or issuance of any Subsidiary's Capital Stock to the
     Borrower or any Wholly Owned Subsidiary Guarantor;

          (f) any Exchange by TWTC and its Subsidiaries, provided that (i) on
                                                         --------
     the date of such Exchange, no Default or Event of Default shall have
     occurred and be continuing or would result therefrom, (ii) the assets
     received in connection with such Exchange shall be received by a Wholly
     Owned Subsidiary of TWTC or, in the case of any Capital Stock so received,
     by the Borrower and (iii) in the event that any cash consideration is paid
     or received by TWTC or any of its Subsidiaries in connection with such
     Exchange, then (a) the payment of any such cash is permitted by Section 7.7
     or Section 7.8(i), as applicable and in accordance with GAAP, and (b) the
     Disposition related to the receipt of any such cash is permitted by Section
     7.5(h);

          (g) the Disposition of any Investments made pursuant to Section
     7.8(g), provided that the Net Cash Proceeds of such Disposition shall be
             --------
     applied to the prepayment of the Term Loans and the permanent reduction of
     the Revolving Commitments and the Delayed-Draw Term Commitments to the
     extent required by Section 2.9(b);

          (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 TWTC,
     provided that the Net Cash Proceeds of such Disposition shall be applied to
     --------
     the prepayment of the Term Loans and the permanent reduction of the
     Revolving Commitments and the Delayed-Draw Term Commitments to the extent
     required by Section 2.9(b); and

          (i) the Disposition of Assets having a fair market value not to exceed
     $200,000,000 in the aggregate, provided that the Net Cash Proceeds of such
                                    --------
     Disposition are received on or prior to the second anniversary of the
     Restatement Effective Date, and provided further that the Net Cash Proceeds
                                     -------- -------
     of such Disposition shall be applied to the prepayment of the Term Loans
     and the permanent reduction of the Revolving Commitments and the Delayed-
     Draw Term 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 or Non-Cash Pay Preferred 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 TWTC or any
Subsidiary, whether now or hereafter outstanding, or make any other distribution
in respect thereof, either directly or indirectly, or make any payment on
<PAGE>

                                                                              67

account of any advance or loan made by TWTC or any Subsidiary, whether in cash
or property or in obligations of TWTC or any Subsidiary (collectively,
"Restricted Payments"), except that:
 -------------------

          (a)  any Subsidiary may make Restricted Payments to the Borrower or
     any Wholly Owned Subsidiary Guarantor;

          (b)  so long as no Event of Default shall have occurred and be
     continuing or would result therefrom, the Borrower may pay dividends (or
     make distributions or advancements) to TWTC to permit TWTC to purchase
     TWTC's common stock or common stock options from present or former officers
     or employees of TWTC, the Borrower 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 Section 7.6(b)
     --------
     after the date hereof (net of any proceeds received by TWTC and contributed
     to the Borrower after the date hereof in connection with resales of any
     common stock or common stock options so purchased) shall not exceed
     $5,000,000;

          (c)  the Borrower may pay dividends (or make distributions or
     advancements) to TWTC for the purpose of enabling TWTC to make scheduled
     interest payments (or, if applicable, dividends) in respect of any
     Indebtedness of TWTC incurred pursuant to Section 7.2(g) or 7.2(o),
     provided that (i) no Default or Event of Default shall have occurred and be
     --------
     continuing or would result therefrom and (ii) each such payment shall be
     made no earlier than three Business Days prior to the date the relevant
     interest payment or dividend payment, as the case may be, is due;

          (d)  the Borrower may pay dividends (or make distributions or
     advancements) to TWTC for the purpose of enabling TWTC to make scheduled
     interest payments (or, if applicable, dividends) in respect of the Senior
     Notes and other Indebtedness of TWTC that is senior and is incurred
     pursuant to Section 7.2(g) or 7.2(o), provided that (i) no Default under
                                           --------
     Section 8(a) or 8(e)(i) or (ii) or Event of Default shall have occurred and
     be continuing or would result therefrom and (ii) each such payment shall be
     made no earlier than three Business Days prior to the date the relevant
     interest payment or dividend payment, as the case may be, is due;

          (e)  so long as no Default or Event of Default shall have occurred and
     be continuing or would result therefrom, the Borrower may pay dividends (or
     make distributions or advancements) to TWTC for the purpose of enabling
     TWTC to finance Investments permitted by Section 7.8(g) or 7.8(h) in an
     aggregate amount not to exceed the amount of Net Cash Proceeds previously
     contributed to the Borrower from any issuance or sale of TWTC's common
     stock or Non-Cash Pay Preferred Stock;

          (f)  so long as no Default or Event of Default shall have occurred and
     be continuing or would result therefrom, the Borrower may pay dividends (or
     make distributions or advancements) to TWTC to permit TWTC to make payments
     to a third party on behalf of the Borrower or its Subsidiaries related to
     ordinary course expenses of the Borrower and its Subsidiaries; and
<PAGE>

                                                                              68

          (g)  the Borrower may pay dividends (or make distributions or
     advancements) to TWTC to permit TWTC to (i) pay customary corporate
     overhead expenses incurred in the ordinary course of business and (ii) pay
     any taxes that are due and payable by TWTC and the Borrower as part of a
     consolidated group.

          7.7.  Capital Expenditures.  Unless the ratio of Consolidated Total
          --------------------------
Debt to Annualized Consolidated EBITDA as at the last day of the most recent
complete fiscal quarter of TWTC is less than 5.00 to 1.0, make or commit to make
any Capital Expenditure, except Capital Expenditures of TWTC and its
Subsidiaries in the ordinary course of business not exceeding for any fiscal
year of TWTC set forth below the dollar amount set forth below opposite such
fiscal year:

                       Fiscal Year         Amount
                       -----------         ------
                          2000           $500,000,000
                          2001           $790,000,000
                          2002           $800,000,000
                          2003           $640,000,000
                          2004           $680,000,000
                          2005           $760,000,000
                          2006           $800,000,000
                          2007           $850,000,000
                          2008           $910,000,000
                          2009           $970,000,000

provided, that (i) up to $150,000,000 of any such amount referred to above, if
--------
not so expended in the fiscal year for which it is permitted, may be carried
over for expenditure in the next succeeding fiscal year, (ii) up to $25,000,000
of any such amount referred to above may be carried back for expenditure in the
immediately preceding fiscal year and (iii) Capital Expenditures made pursuant
to this Section 7.7 during any fiscal year shall be deemed made, first, in
                                                                 -----
respect of amounts carried over from the prior fiscal year pursuant to subclause
(i) above, second, in respect of amounts permitted for such fiscal year as
           ------
provided above and, third, in respect of amounts carried back from the next
                    -----
succeeding fiscal year pursuant to subclause (ii) above.

          7.8.  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;

          (d)  loans and advances to officers, directors or employees of TWTC or
     any Subsidiary of TWTC in the ordinary course of business (including for
     travel,
<PAGE>

                                                                              69

     entertainment and relocation expenses) in an aggregate amount for TWTC or
     any Subsidiary of TWTC 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)  intercompany Investments by TWTC or any of its Subsidiaries in
     the Borrower or any Person that, prior to such investment, is a Wholly
     Owned Subsidiary Guarantor;

          (f)  Investments by the Borrower in TWTC in connection with dividends,
     distributions or advancements made pursuant to clauses (b), (c), (d), (e),
     (f) or (g) of Section 7.6;

          (g)  Investments by TWTC or any of its Subsidiaries in existing or
     potential trade suppliers, vendors and customers from whom the Borrower
     reasonably expects to obtain a material commercial benefit in an aggregate
     amount (valued at cost) not to exceed $25,000,000 at any one time;

          (h)  so long as no Default or Event of Default shall have occurred and
     be continuing or would result therefrom, Investments by TWTC in any Person
     that is or concurrently therewith becomes a Wholly Owned Subsidiary
     Guarantor in an aggregate amount equal to the Net Cash Proceeds received
     from any issuance or sale of TWTC's common stock or Non-Cash Pay Preferred
     Stock; and

          (i)  in addition to Investments otherwise expressly permitted by this
     Section, Investments by the Borrower or any of its Subsidiaries in an
     aggregate amount (valued at cost) not to exceed $60,000,000 at any one
     time; provided, that if TWT New Jersey is a party to the Guarantee and
           --------
     Collateral Agreement either (i) on the Restatement Effective Date or (ii)
     on or prior to January 31, 2001, then on the date on which it becomes a
     party, the amount of Investments permitted by this paragraph shall be
     increased to $75,000,000.

          7.9.  Optional Payments and Modifications of Certain Debt Instruments.
          ---------------------------------------------------------------------
(a)  Make or offer to make any optional or voluntary payment, prepayment,
repurchase or redemption of or otherwise optionally or voluntarily defease or
segregate funds with respect to the Senior Notes or any Additional Financing or
other Indebtedness of TWTC permitted by Section 7.2(g) other than with the
proceeds of a refinancing that (i) is on terms not materially less favorable to
the Lenders than the Indebtedness being refinanced and (ii) matures no earlier
than the date that is one year after the final maturity date of the Loans and
the expiration of the Commitments hereunder or (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 the Senior Notes or any Additional
Financing or other Indebtedness of TWTC permitted by Section 7.2(g) in any
manner materially adverse to the Lenders.

          7.10. Transactions with Affiliates.  Other than as set forth on
          ----------------------------------
Schedule 7.10, 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
<PAGE>

                                                                              70

Affiliate (other than the Borrower or any Wholly Owned Subsidiary Guarantor)
unless such transaction is (a) otherwise permitted under this Agreement, (b) in
the ordinary course of business of TWTC, the Borrower or such Subsidiary, as the
case may be, and (c) upon fair and reasonable terms no less favorable to TWTC,
the Borrower 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.

          7.11. Sales and Leasebacks.  Enter into any arrangement with any
          --------------------------
Person providing for the leasing by TWTC or any Subsidiary of real or personal
property that has been or is to be sold or transferred by TWTC 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 TWTC or such Subsidiary, other than any sale and leaseback
transaction involving properties existing on the Restatement Effective Date and
permitted by Section 7.3(k) or properties acquired after the Restatement
Effective Date and permitted by Section 7.3(g).

          7.12. Changes in Fiscal Periods.  Permit the fiscal year of TWTC or
          -------------------------------
the Borrower to end on a day other than December 31 or change TWTC's or the
Borrower's method of determining fiscal quarters.

          7.13. Negative Pledge Clauses.  Enter into or suffer to exist or
          -----------------------------
become effective any agreement that prohibits or limits the ability of TWTC 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,
other than (a) this Agreement and the other Loan Documents, (b) the Time Warner
Arrangements, (c) 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), (d) any
agreements governing any Investment in any joint venture that limit the ability
to grant a security interest in the Capital Stock of such joint venture so long
as such Capital Stock is pledged to the Administrative Agent, for the ratable
benefit of the Lenders, in an indirect manner satisfactory to the Administrative
Agent, (e) 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, (f) any agreements governing
any leasehold interest (including any rights of way, colocation agreements and
other similar such interests in real estate, and agreements assumed pursuant to
the GST Asset Purchase Agreement granting an indefeasible right of use in fiber
or conduits or providing for joint construction or marketing of fiber or
conduits) or building entry agreements that limit the ability to grant a
security interest in such leasehold interest or building entry agreements, (g)
agreements with customers for the provision of services that limit the ability
to grant a security interest in such agreements (but not amounts receivable or
any money or other amounts due or to become due or other right of payment
resulting from those agreements), (h) the Indenture and (i) the agreements
governing the Additional Financing.

          7.14. 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 the Borrower or of TWTC to (a) make Restricted
Payments in respect of any Capital Stock of such Subsidiary held by, or pay any
Indebtedness owed to, the Borrower or any other Subsidiary
<PAGE>

                                                                              71

of the Borrower, (b) make loans or advances to, or other Investments in, the
Borrower or any other Subsidiary of the Borrower or (c) transfer any of its
assets to the Borrower or any other Subsidiary of the Borrower, except for such
encumbrances or restrictions existing under or by reason of (i) any restrictions
existing under the Loan Documents and (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.

          7.15. Lines of Business; Holding Company Status. (a) Enter into any
          -----------------------------------------------
business, either directly or through any Subsidiary, except for the design,
development, construction, installation, integration, management or provision of
any telecommunications business, including voice, video, Internet and data
transmission products, services and systems, fiber network construction and
sales and any business reasonably related to the foregoing (each, a "Permitted
                                                                     ---------
Line of Business").
----------------

          (b)  In the case of TWTC, (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
other Persons or (ii) own, lease, manage or otherwise operate any properties or
assets (including cash and Cash Equivalents) for any period greater than two
consecutive days other than (1) cash and Cash Equivalents in an amount not to
exceed $25,000,000 in the aggregate and (2) the ownership of shares of Capital
Stock of other Persons; provided that, TWTC may continue to conduct
                        --------
administrative and management oversight and headquarters functions (including,
without limitation, maintaining its leases of office space existing on the
Restatement Effective Date and providing transitional services to GST, its
affiliates or transferees as required under the GST Asset Purchase Agreement).

          7.16. Modifications to Time Warner Arrangements and Material Rights
          -------------------------------------------------------------------
and Privileges.  Amend, supplement, or otherwise modify the terms and conditions
--------------
of any of the Time Warner Arrangements or any material rights and privileges
(including, without limitation, FCC and local regulatory licenses) in any manner
materially adverse to the Lenders.

          7.17. Amendments to GST Asset Purchase Agreement.  (a) Amend,
          ------------------------------------------------
supplement or otherwise modify (pursuant to a waiver or otherwise) the terms and
conditions of the indemnities furnished to any Loan Party or any of its
Subsidiaries pursuant to the GST Asset Purchase Agreement in any manner that
could reasonably be expected to have a Material Adverse Effect.

          7.18. Assets of TWT New Jersey.  In the case of TWT New Jersey, until
          ------------------------------
such date as it is deemed to be a Subsidiary Guarantor, have properties or
assets (including cash and Cash Equivalents) in an aggregate amount greater than
$15,000,000.

                          SECTION 8. EVENTS OF DEFAULT

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

                                                                              72

          (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 five days after any such interest or other amount becomes
     due in accordance with the terms hereof; or

          (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) or (ii) of Section 6.4(a) (with
     respect to TWTC and the Borrower only), Section 6.7(a) or Section 7 of this
     Agreement or Sections 5.5 and 5.7(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 the Borrower from the Administrative Agent or the Required Lenders; or

          (e)  TWTC or any of its 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,
     whichever is later, 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) TWTC or any of its 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
<PAGE>

                                                                              73

     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 TWTC or any of its Subsidiaries
     shall make a general assignment for the benefit of its creditors; or (ii)
     there shall be commenced against TWTC or any of its 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 TWTC or any of
     its 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)
     TWTC or any of its Subsidiaries shall take any action in furtherance of, or
     indicating its consent to, approval of, or acquiescence in, any of the acts
     set forth in clause (i), (ii), or (iii) above; or (v) TWTC or any of its
     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 the
     Borrower 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, to administer or to terminate,
     any Single Employer Plan, which Reportable Event or commencement of
     proceedings or appointment of a trustee is, in the reasonable opinion of
     the Required Lenders, 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) the Borrower or any
     Commonly Controlled Entity shall, or in the reasonable opinion of the
     Required Lenders is likely to, 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 other than in the ordinary course
     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 sole judgment 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 TWTC or
     any of its Subsidiaries involving in the aggregate a liability (to the
     extent (i) not paid by insurance or (ii) as to which no reasonable
     expectation of insurance coverage exists) of $10,000,000 or more (or, with
     respect to judgments related to reciprocal compensation arrangements for
     which reserves in conformity with GAAP have been provided on the books of
     TWTC or its Subsidiaries or that have not yet been recognized as revenue,
<PAGE>

                                                                              74

     $15,000,000 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)  the guarantee contained in Section 2 of the Guarantee and
     Collateral Agreement 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

          (k)  the Time Warner Arrangements 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 (other than any expiration of any of the Time Warner
     Arrangements in accordance with its terms that could not, individually or
     in the aggregate, reasonably be expected to have a Material Adverse
     Effect); or

          (l)  (i) the Permitted Investors shall cease to have the power to vote
     or direct the voting of securities having at least 30% of the ordinary
     voting power for the election of directors of TWTC (determined on a fully
     diluted basis); (ii) the Permitted Investors shall cease to own of record
     and beneficially, directly or indirectly, securities of TWTC representing
     at least 30% (determined on a fully diluted basis) of the economic
     interests therein; (iii) 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")), excluding the Permitted Investors, 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 the
     percentage of the outstanding common stock of TWTC at the time owned and
     controlled by the Permitted Investors; (iv) the board of directors of TWTC
     shall cease to consist of a majority of Continuing Directors; (v) TWTC
     shall cease to own and control, of record and beneficially, directly, 100%
     of each class of outstanding Capital Stock of the Borrower free and clear
     of all Liens (except Liens created by the Guarantee and Collateral
     Agreement); or (vi) a Specified Change of Control shall occur; provided,
                                                                    --------
     that the merger of Time Warner, Inc. with AOL, Inc. is expressly permitted
     hereunder and shall not constitute an Event of Default under this Section
     8(l);

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
<PAGE>

                                                                              75

declare the Commitments to be terminated forthwith, whereupon the 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 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 AGENTS

          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 any agents or attorneys
in-fact selected by it with reasonable care.
<PAGE>

                                                                              76

          9.3.  Exculpatory Provisions.  Neither any Agent nor any of their
          ----------------------------
respective 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 Agents 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 Agents 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.

          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 TWTC or the Borrower),
independent accountants and other experts selected by the Administrative Agent.
The Administrative Agent may deem and treat the payee of any Note 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,
TWTC 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

<PAGE>

                                                                              77

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 Agents and Other Lenders.  Each Lender expressly
          ----------------------------------------------
acknowledges that neither the Agents nor any of their respective officers,
directors, employees, agents, attorneys-in-fact or affiliates have made any
representations or warranties to it and that no act by any 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 any
Agent to any Lender. Each Lender represents to the Agents that it has,
independently and without reliance upon any 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 any 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.

          9.7.  Indemnification.  The Lenders agree to indemnify each Agent
          ---------------------
in its capacity as such (to the extent not reimbursed by TWTC or the Borrower
and without limiting the obligation of TWTC 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 such 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 such 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 such Agent's
gross negligence or willful misconduct. The
<PAGE>

                                                                              78

agreements in this Section shall survive the payment of the Loans and all other
amounts payable hereunder.

          9.8.  Agent in Its Individual Capacity.  Each 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 such Agent were not an 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, each 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 an Agent, and the terms "Lender" and
"Lenders" shall include each Agent in its individual capacity.

          9.9.  Successor Administrative Agent.  The Administrative Agent may
          ------------------------------------
resign as Administrative Agent upon 30 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 30 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.

          9.10. Documentation Agent and Co-Syndication Agents.  Neither the
          ---------------------------------------------------
Documentation Agent nor the Co-Syndication Agents shall have any duties or
responsibilities hereunder in its capacity as such.

                           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 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

<PAGE>

                                                                              79

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 (with the written
consent of the Required Lenders), 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, including,
without limitation, the termination of the Commitments and the Loans being due
and payable; provided, however, that no such waiver and no such amendment,
             --------  -------
supplement or modification shall (i) forgive the principal amount or extend the
final scheduled date of maturity of any Loan, extend the scheduled date of any
reduction of the Revolving Commitments provided in Section 2.3(c), extend the
date for any scheduled amortization payment in respect of any Term Loan, reduce
the stated rate of any interest or fee payable hereunder (except 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 the Borrower 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 provision of Section 2.15(a), (b) or (c) without the written consent
of each Lender adversely affected thereby; (v) 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; (vi) amend,
modify or waive any provision of Section 9 without the written consent of the
Administrative Agent; (vii) amend, modify or waive any provision of Section 2.4
or 2.5 without the written consent of the Swingline Lender; or (viii) amend,
modify or waive any provision of Section 3 without the written consent of the
Issuing Lender. 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
the Revolving Extensions of Credit and the accrued interest and fees in respect
thereof and (b) to include appropriately the Lenders holding such credit
facilities in any determination of the Required Lenders and the Majority
Facility Lenders.

<PAGE>

                                                                              80

          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 TWTC, 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:

     TWTC:               Time Warner Telecom Inc.
                         10475 Park Meadows Drive
                         Littleton, CO 80124
                         Attention: Mark A. Peters, Vice President, Treasurer
                         Telecopy:  (303) 566-1776
                         Telephone: (303) 566-1545

     The Borrower:       Time Warner Telecom Holdings Inc.
                         10475 Park Meadows Drive
                         Littleton, CO 80124
                         Attention: Paul B. Jones, Esq., General Counsel
                         Telecopy:  (303) 566-1237
                         Telephone: (303) 566-1777

     with a copy to:     Cravath, Swaine & Moore
                         Worldwide Plaza
                         825 Eighth Avenue
                         New York, NY 10019
                         Attention: William P. Rogers, Jr., Esq.
                         Telecopy:  (212) 474-3700
                         Telephone: (212) 474-1270

     The Administrative
     Agent:              The Chase Manhattan Bank
                         270 Park Avenue
                         New York, NY 10017
                         Attention:  Joan Fitzgibbon
                         Telecopy:  (212) 270-4164
                         Telephone: (212) 270-1786

with a copy to:          The Chase Manhattan Bank
                         Agency Bank Services
                         One Chase Manhattan Plaza, 8/th/ Floor
                         New York, NY 10081
                         Attention:  Donna Montgomery

<PAGE>

                                                                              81

                        Telecopy:  (212) 552-5700
                        Telephone: (212) 552-7477

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 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.  Each of TWTC and the Borrower
          -----------------------------------
agrees (a) to pay or reimburse the Administrative Agent and the Arrangers for
all their reasonable 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 and the Arrangers, (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, the
Administrative Agent and the Arrangers and their respective officers, directors,
employees, affiliates, agents 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

<PAGE>

                                                                              82

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 TWTC or 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
                                    -----------------------    --------
neither TWTC nor the Borrower shall have any 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.  It is understood and agreed that, to the
extent not precluded by a conflict of interest, each Indemnitee shall endeavor
to work cooperatively with a view to minimizing the legal and other expenses
associated with any defense and any potential settlement or judgment.  Without
limiting the foregoing, and to the extent permitted by applicable law, TWTC
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 TWTC or the Borrower pursuant to this
Section 10.5 shall be submitted to 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.

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

          (b)  Any Lender other than any Conduit Lender may, without the consent
of the Borrower, in accordance with applicable law, at any time sell to one or
more banks, financial institutions or other entities (each, a "Participant")
                                                               -----------
participating interests in any Loan owing to such Lender, any Commitment of such
Lender or any other interest of such Lender hereunder and under the other Loan
Documents.  In the event of any such sale by a Lender of a participating
interest to a Participant, such Lender's obligations under this Agreement to the
other parties to this Agreement shall remain unchanged, such Lender shall remain
solely responsible for the performance thereof, such Lender shall remain the
holder of any such Loan for all purposes under this Agreement and the other Loan
Documents, and the Borrower and the Administrative Agent shall continue to deal
solely and directly with such Lender in connection with such Lender's rights and
obligations under this Agreement and the other Loan Documents. In no event shall
any Participant under any such participation have any right to approve any
amendment or waiver of any provision of any Loan Document, or any consent to any
departure by any Loan Party therefrom, except to the extent that such amendment,
waiver or consent would reduce the principal of, or interest on, the Loans or
any fees payable hereunder, or postpone the

<PAGE>

                                                                              83

date of the final maturity of the Loans, in each case to the extent subject to
such participation. The Borrower agrees that if amounts outstanding under this
Agreement and the Loans are due or unpaid, or shall have been declared or shall
have become due and payable upon the occurrence of an Event of Default, each
Participant shall, to the maximum extent permitted by applicable law, be deemed
to have the right of setoff in respect of its participating interest in amounts
owing under this Agreement to the same extent as if the amount of its
participating interest were owing directly to it as a Lender under this
Agreement, provided that, in purchasing such participating interest, such
           --------
Participant shall be deemed to have agreed to share with the Lenders the
proceeds thereof as provided in Section 10.7(a) as fully as if it were a Lender
hereunder. The Borrower also agrees that each Participant shall be entitled to
the benefits of Sections 2.16, 2.17 and 2.18 with respect to its participation
in the Commitments and the Loans outstanding from time to time as if it was a
Lender; provided that, in the case of Section 2.19, such Participant shall have
        --------
complied with the requirements of said Section and provided, further, that no
                                                   --------  -------
Participant shall be entitled to receive any greater amount pursuant to any such
Section than the transferor Lender would have been entitled to receive in
respect of the amount of the participation transferred by such transferor Lender
to such Participant had no such transfer occurred.

          (c)  Any Lender other than any Conduit Lender (an "Assignor") may, in
                                                             --------
accordance with applicable law, at any time and from time to time assign to any
Lender, any affiliate of any Lender or any Approved Fund or, with the consent of
the Borrower and the Administrative Agent (which, in each case, shall not be
unreasonably withheld or delayed), to an additional bank, financial institution
or other entity (an "Assignee") all or any part of its rights and obligations
                     --------
under this Agreement and the other Loan Documents pursuant to an Assignment and
Acceptance, executed by such Assignee, such Assignor and any other Person whose
consent is required pursuant to this paragraph, and delivered to the
Administrative Agent for its acceptance and recording in the Register; provided
                                                                       --------
that, unless otherwise agreed by the Borrower and the Administrative Agent, no
such assignment to an Assignee (other than any Lender or any affiliate of any
Lender or any Approved Fund) shall be in an aggregate principal amount of less
than $5,000,000 (or, in the case of the Tranche B Term Facility, $1,000,000), in
each case except in the case of an assignment of all of a Lender's interests
under this Agreement.  For purposes of the proviso contained in the preceding
sentence, the amount described therein shall be aggregated in respect of each
Lender and its related Approved Funds, if any.  Any such assignment need not be
ratable as among the Facilities.  Upon such execution, delivery, acceptance and
recording, from and after the effective date determined pursuant to such
Assignment and Acceptance, (x) the Assignee thereunder shall be a party hereto
and, to the extent provided in such Assignment and Acceptance, have the rights
and obligations of a Lender hereunder with a Commitment and/or Loans as set
forth therein, and (y) the Assignor thereunder shall, to the extent provided in
such Assignment and Acceptance, be released from its obligations under this
Agreement (and, in the case of an Assignment and Acceptance covering all of an
Assignor's rights and obligations under this Agreement, such Assignor shall
cease to be a party hereto) except with respect to its obligations under Section
10.15.  Notwithstanding any provision of this Section 10.6, the consent of the
Borrower shall not be required for any assignment that occurs when an Event of
Default pursuant to Section 8(a) or Section 8(f) shall have occurred and be
continuing with respect to the Borrower.  Notwithstanding the foregoing, any
Conduit Lender may assign at any time to its designating Lender hereunder
without the consent of the Borrower or the Administrative Agent any or all of
the Loans it may have funded

<PAGE>

                                                                              84

hereunder and pursuant to its designation agreement and without regard to the
limitations set forth in the first sentence of this Section 10.6(c).

          (d)  The Administrative Agent shall, on behalf of the Borrower,
maintain at its address referred to in Section 10.2 a copy of each Assignment
and Acceptance delivered to it and a register (the "Register") for the
                                                    --------
recordation of the names and addresses of the Lenders and the Commitment of, and
the principal amount of the Loans owing to, each Lender from time to time. The
entries in the Register shall be conclusive, in the absence of manifest error,
and the Borrower, each other Loan Party, the Administrative Agent and the
Lenders shall treat each Person whose name is recorded in the Register as the
owner of the Loans and any Notes evidencing the Loans recorded therein for all
purposes of this Agreement.  Any assignment of any Loan, whether or not
evidenced by a Note, shall be effective only upon appropriate entries with
respect thereto being made in the Register (and each Note shall expressly so
provide).  Any assignment or transfer of all or part of a Loan evidenced by a
Note shall be registered on the Register only upon surrender for registration of
assignment or transfer of the Note evidencing such Loan, accompanied by a duly
executed Assignment and Acceptance, and thereupon one or more new Notes shall be
issued to the designated Assignee.

          (e)  Upon its receipt of an Assignment and Acceptance executed by an
Assignor, an Assignee and any other Person whose consent is required by Section
10.6(c), together with payment to the Administrative Agent of a registration and
processing fee of $3,500, the Administrative Agent shall (i) promptly accept
such Assignment and Acceptance and (ii) record the information contained therein
in the Register on the effective date determined pursuant thereto.

          (f)  For avoidance of doubt, the parties to this Agreement acknowledge
that the provisions of this Section 10.6 concerning assignments of Loans and
Notes relate only to absolute assignments and that such provisions do not
prohibit assignments creating security interests, including any pledge or
assignment by a Lender of any Loan or Note to any Federal Reserve Bank in
accordance with applicable law.

          (g)  The Borrower, upon receipt of written notice from the relevant
Lender, agrees to issue Notes to any Lender requiring Notes to facilitate
transactions of the type described in paragraph (f) above.

          (h)  Each of TWTC, 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.

<PAGE>

                                                                              85

          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 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 TWTC or the
Borrower, any such notice being expressly waived by TWTC and the Borrower to the
extent permitted by applicable law, upon any amount becoming due and payable by
TWTC or the Borrower hereunder, subject to applicable grace periods (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 TWTC 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 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 TWTC, the Borrower, the Administrative Agent
and the Lenders with respect to the subject matter hereof and thereof, and there
are no promises, undertakings,

<PAGE>

                                                                              86

representations or warranties by the Administrative Agent or any Lender relative
to 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 TWTC 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 TWTC 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.

          10.13.  Acknowledgments.  Each of TWTC 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 TWTC 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
     TWTC and the Borrower, on the other hand, in connection herewith or
     therewith is solely that of debtor and creditor; and

<PAGE>

                                                                              87

          (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 TWTC, 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 the Borrower 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.  Each of the Administrative Agent and each
          ----------------------
Lender agrees to keep confidential all non-public information (including oral
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 (provided that such Affiliate or Approved Fund
expressly agrees to comply with the provisions of this Section), (b) to any
actual or prospective Transferee or Hedge Agreement counterparty that expressly
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 or
otherwise disclosed to such Person on a non-confidential basis, (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, (i) in connection with the exercise of any remedy
hereunder or under any other Loan Document or (j) to any direct or indirect
contractual counterparty in swap agreements or such contractual counterparty's
professional advisor (so long as such contractual counterparty or professional
advisor to such contractual counterparty expressly agrees to be bound by the
provisions of this Section 10.15); provided, further, that with respect to
                                   --------  -------
disclosures pursuant to clauses (d), (e) and (f) of this Section, unless
prohibited by applicable law or court order, each Lender and the Administrative
Agent shall attempt to notify TWTC of any request by any governmental agency or
representative thereof or other Person

<PAGE>

                                                                              88

(other than any such request in connection with an examination of the financial
condition of such Lender by such governmental agency) for disclosure of any
material confidential information after receipt of such request, and if
reasonably practicable and permissible, before disclosure of such information.

          10.16. WAIVERS OF JURY TRIAL.  TWTC, 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>

                                                                         Annex A
                                                                         -------

          PRICING GRID FOR DELAYED-DRAW TERM LOANS, REVOLVING LOANS,
                      SWINGLINE LOANS AND COMMITMENT FEES

<TABLE>
<CAPTION>
===================================================================================================

 Consolidated            Applicable Margin
 Leverage Ratio                 for             Applicable Margin
                         Eurodollar Loans         for ABR Loans          Commitment Fee Rate
===================================================================================================
<S>                       <C>                 <C>                  <C>
Greater than or                        2.75%               1.75%   1.00% if 33 1/3% or less of the
 equal to 10.00 to                                                 relevant Facility Commitments
 1.0                                                                        are utilized;

                                                                     0.75% if 66 2/3% or less but
                                                                     greater than 33 1/3% of the
                                                                    relevant Facility Commitments
                                                                            are utilized;

                                                                     0.50% if greater than 66 2/3%
                                                                       of the relevant Facility
                                                                       Commitments are utilized
-------------------------------------------------------------------
Greater than or                        2.50%               1.50%               same as above
 equal to 9.00 to 1.0
 but less than 10.00 to 1.0
-------------------------------------------------------------------
Greater than or                        2.25%               1.25%               same as above
 equal to 8.00 to 1.0
 but less than 9.00 to 1.0
-------------------------------------------------------------------
Greater than or                        2.00%               1.00%               same as above
 equal to 7.00 to 1.0
 but less than 8.00 to 1.0
-------------------------------------------------------------------
Greater than or                        1.75%               0.75%               same as above
 equal to 6.00 to 1.0
 but less than 7.00 to 1.0
-------------------------------------------------------------------
Greater than or                        1.50%               0.50%               same as above
 equal to 5.00 to 1.0
 but less than 6.00 to 1.0
-------------------------------------------------------------------
Greater than or                        1.25%               0.25%               same as above
 equal to 4.00 to 1.0
 but less than 5.00 or 1.0
-------------------------------------------------------------------
Less than 4.00 to 1.0                  1.00%                0.0%               same as above
===================================================================================================
</TABLE>

Changes in the Applicable Margin resulting from changes in the Consolidated
Leverage Ratio shall become effective on the date (the "Adjustment Date") that
                                                        ---------------
is three Business Days after the

<PAGE>

                                                                               2

date on which financial statements are delivered to the Lenders pursuant to
Section 6.1, and shall remain in effect until the next change to be effected
pursuant to this paragraph. If any financial statements referred to above are
not delivered within the time periods specified in Section 6.1, then, until the
date that is three Business Days after the date on which such financial
statements are delivered, the highest rate set forth in each column of the
Pricing Grid shall apply. Overdue interest, fees and other amounts shall bear
interest at 2.00% above the rate applicable to ABR Loans. Each determination of
the Consolidated Leverage Ratio pursuant to the Pricing Grid shall be made in a
manner consistent with the determination thereof pursuant to Section 7.1.

Swingline Loans shall, for purposes of the commitment fee calculations only, not
be deemed to be a utilization of the Revolving Facility.<PAGE>

                          AMENDMENT TO FIRST RESTATED

                          AND AMENDED CERTIFICATE AND

                       AGREEMENT OF LIMITED PARTNERSHIP

                                      OF

                           WELLS REAL ESTATE FUND II

     THIS AMENDMENT TO FIRST RESTATED AND AMENDED CERTIFICATE AND AGREEMENT OF
LIMITED PARTNERSHIP OF WELLS REAL ESTATE FUND II (the "Partnership") is made and
entered into as of the 1st day of January, 2000, by and among LEO F. WELLS, III,
a Georgia resident ("Wells"), and WELLS CAPITAL, INC., a Georgia corporation
("WCI"), as the General Partners (the "General Partners"), and the Limited
Partners of the Partnership (the General Partners and the Limited Partners are
sometimes collectively referred to herein as the "Partners") for the purpose of
amending that certain First Restated and Amended Certificate and Agreement of
Limited Partnership of Wells Real Estate Fund II dated September 4, 1986.

                                  WITNESSETH:

     WHEREAS, the Partnership was formed pursuant to the terms and provisions of
that certain Certificate and Agreement of Limited Partnership of Wells Real
Estate Fund II dated June 23, 1986, and is governed by the provisions of that
certain First Restated and Amended Certificate and Agreement of Limited
Partnership of Wells Real Estate Fund II dated September 4, 1986, as previously
amended to date (as so amended, the "Partnership Agreement"); and

     WHEREAS, the Partnership Agreement contemplates that the Partnership will
invest in various real properties and sets forth the agreed to allocations of
profits and losses with respect to each such investment, and certain provisions
relating to the distribution to the Partners of the net proceeds from the sale
of such properties ("Net Sale Proceeds") to the Partners; and

     WHEREAS, in connection with the original capitalization of the Partnership,
the Limited Partners were provided with a Prospectus dated September 8, 1986
(the "Prospectus") which sets forth in summary form certain descriptions of the
allocations of profits and losses and the distribution of Net Sale Proceeds; and

     WHEREAS, Section 9.3 of the Partnership Agreement provides generally that
Net Sale Proceeds be distributed to Limited Partners in accordance with the
positive balances in their capital accounts after the allocation of Gain on Sale
provided for in Section 10.4 of the Partnership Agreement; and

     WHEREAS, Section 10.4(c) of the Partnership Agreement provides for, among
other things, an initial allocation of Gain on Sale to Limited Partners holding
Class B Units, in
<PAGE>

proportion to and to the extent of, the amount necessary to give each such
Limited Partner holding Class B Units an amount equal to the excess Cash
Available for Distribution received by Limited Partners holding Class A Units
prior to the date of such allocation, assuming said Limited Partners had
purchased an equivalent number of Units on the same date; and

     WHEREAS, Section 10.4(c) of the Partnership Agreement further states that
it is the intent of the Partners that any disproportionate distributions of Cash
Available for Distribution made to Limited Partners holding Class A Units
pursuant to the provisions of Section 9.1(a)(i) be equalized by this provision;
and

     WHEREAS, Section 10.4(c) of the Partnership Agreement evidences the General
Partners' intent to allocate and distribute initial Net Sale Proceeds to Limited
Partners holding Class B Units in an amount necessary to equalize the
disproportionate distributions of Cash Available for Distribution previously
paid to the Limited Partners holding Class A Units on a per Unit basis; and

     WHEREAS, pursuant to Section 9.1(a)(i) of the Partnership Agreement, the
Limited Partners holding Class A Units in the Partnership have, over the life of
the Partnership, received preferential distributions of Cash Available for
Distribution from Partnership operations so that in order to effect the stated
intent of the Partners, Limited Partners holding Class B Units in the
Partnership must receive the first amount of Net Sale Proceeds distributed to
ensure that the distributions paid to Limited Partners holding Class B Units are
equalized to the distributions previously paid to Limited Partners bolding Class
A Units such that Limited Partners holding Class B Units ultimately receive the
same amount of distributions from the Partnership, on a per Unit basis, as do
the Limited Partners holding Class A Units; and

     WHEREAS, the descriptions of the distribution of Net Sale Proceeds set
forth in the section of the Prospectus entitled "Summary of the Offering" and
the section of the Prospectus entitled "Distribution Policies - Residual
Proceeds" state a general intention of the General Partners to make
distributions of Net Sale Proceeds first to the Limited Partners in the amount
necessary to return their capital contributions plus a 12% per annum cumulative
return thereon, less all prior distributions of Cash Available for distribution,
then 85% to the Limited Partners and 15% to the General Partners; and

     WHEREAS, the Partnership Agreement provisions setting forth the allocation
and distribution of Net Sale Proceeds set forth in Section 9.3, when read in
conjunction with the provisions regarding the allocation of Gain on Sale set
forth in Section 10.4(c) described above, along with the various provisions of
the Prospectus describing the distribution of Net Sale Proceeds described above,
are inconsistent and ambiguous; and

     WHEREAS, Section 11.2(b) of the Partnership Agreement grants the General
Partners the authority to amend the Partnership Agreement without the consent or
vote of the Limited Partners to cure any ambiguity or to correct or supplement
any provision in the Partnership Agreement which may be inconsistent with any of
the other provision of the Partnership Agreement; and
<PAGE>

     WHEREAS, in view of the foregoing inconsistent and ambiguous sections of
the Partnership Agreement relating to the distribution of Net Sale Proceeds
referred to above, the General Partners are now desirous of correcting and
clarifying such provisions and curing the currently existing ambiguities with
respect to distributions of Net Sale Proceeds; and

     WHEREAS, the General Partners have deemed it to be fair and in the best
interest of the Partners that the distribution of Net Sale Proceeds be made in
accordance with the General Partners' original intention, as evidenced by
Section 10.4(c) of the Partnership Agreement, to allocate and distribute Net
Sale Proceeds as follows: (a) first, to Limited Partners holding Class B Units
in an amount necessary to provide them with cash distributions equal to the Cash
Available for Distribution previously paid to the Limited Partners holding Class
A Units on a per Unit basis; (b) then, to Limited Partners on a per Unit basis
until each Limited Partner has received distributions equal to the sum of his
Capital Contribution, plus an amount equal to his Cumulative Distribution, less
the sum of all prior distributions to such Limited Partner; and (c) finally, 85%
thereof to the Limited Partners and 15% thereof to the General Partners.

     NOW, THEREFORE, in consideration of the foregoing premises and the mutual
benefits, covenants and conditions herein contained, the parties hereto do
hereby amend the Partnership Agreement as follows:

                            AMENDMENT TO ARTICLE IX

     Section 9.3 of Article IX of the Partnership Agreement is hereby deleted in
its entirety and the following provision is inserted in lieu thereof:

     "9.3  Net Sale Proceeds.  Except as otherwise provided for in Section 9.4
           -----------------
hereof in connection with a dissolution and liquidation of the Partnership, and
except for the potential reinvestment of Net Sale Proceeds as provided in
Section 11.3(g) hereof, Net Sale Proceeds shall be distributed as follows: (a)
first, to each Limited Partner holding Class B Units, in proportion to and to
the extent of, the amount, if any, necessary to give each Limited Partner
holding Class B Units an amount of Net Sale Proceeds equal to the excess Cash
Available for Distribution received prior to the Allocation Date by each Limited
Partner holding Class A Units under Section 9.1(a)(i) hereof, assuming said
Limited Partners had purchased an equivalent number of Units on the same date;
(b) then, to the Limited Partners until each Limited Partner has received
Partnership distributions in an amount equal to the sum of his Capital
Contribution, plus an amount equal to his Cumulative Distribution, less the sum
of all prior distributions made to such Limited Partner; and (c) finally,
eighty-five percent (85%) thereof to the Limited Partners and fifteen percent
(15%) thereof to the General Partners."

                                RECERTIFICATION

     Except as set forth above, the Partnership Agreement, as specifically
amended hereby, shall continue and remain in full force and effect.
<PAGE>

     IN WITNESS WHEREOF, the undersigned have executed this Amendment to First
Restated and Amended Certificate and Agreement of Limited Partnership of Wells
Real Estate Fund II as of the day and year first above written both as parties
hereto and on behalf of the Limited Partners pursuant to that certain power of
attorney granted to the General Partners pursuant to the provisions of Section
19.1(a)(iv) of the Partnership Agreement.

                               GENERAL PARTNERS:
                               ----------------

                               /s/ Leo F. Wells, III      (SEAL)
                               ---------------------------
                               LEO F. WELLS, III

                               WELLS CAPITAL, INC.
                               A Georgia corporation

                               By: /s/ Leo F. Wells, III
                                  ---------------------------------
                                  Leo F. Wells, III, President

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