<PAGE>   1
                                                                  EXECUTION COPY

                                 $2,500,000,000

                                     364-DAY

                REVOLVING CREDIT AND TERM LOAN FACILITY AGREEMENT

                          Dated as of February 22, 2001

                                      among

                               AGERE SYSTEMS INC.,


                            LUCENT TECHNOLOGIES INC.,


                            THE LENDERS PARTY HERETO,


              SALOMON SMITH BARNEY INC., as Syndication Agent, and


                THE CHASE MANHATTAN BANK, as Administrative Agent




               JPMORGAN, a division of CHASE SECURITIES INC., and
                           SALOMON SMITH BARNEY INC.,
                     as Co-Lead Arrangers and Co-Bookrunners
<PAGE>   2
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
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ARTICLE I Definitions..................................................................................................1

         SECTION 1.01               Defined Terms......................................................................1

         SECTION 1.02               Terms Generally...................................................................14

         SECTION 1.03               Accounting Terms; GAAP............................................................14

         SECTION 1.04               Loan Parties and Loan Documents...................................................14

         SECTION 1.05               Schedule 2.10.....................................................................14

ARTICLE II The Credits................................................................................................14

         SECTION 2.01               Assumption of Obligations; Commitments............................................14

         SECTION 2.02               Revolving Loans...................................................................15

         SECTION 2.03               Borrowing Procedure...............................................................16

         SECTION 2.04               Conversion and Continuation of Loans..............................................16

         SECTION 2.05               Fees..............................................................................17

         SECTION 2.06               Repayment of Loans, Evidence of Debt..............................................17

         SECTION 2.07               Interest on Loans.................................................................18

         SECTION 2.08               Default Interest..................................................................18

         SECTION 2.09               Alternate Rate of Interest........................................................19

         SECTION 2.10               Optional and Mandatory Termination and Reduction of Commitments; Prepayments
                                    of Term Loans in Connection with Certain Transactions.............................19

         SECTION 2.11               Optional and Mandatory Repayment..................................................20

         SECTION 2.12               Reserve Requirements, Change in Circumstances.....................................20

         SECTION 2.13               Change in Legality................................................................22

         SECTION 2.14               Indemnity.........................................................................22

         SECTION 2.15               Pro Rata Treatment................................................................23

         SECTION 2.16               Sharing of Setoff.................................................................23

         SECTION 2.17               Payments..........................................................................23
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                                       i
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         SECTION 2.18               Taxes.............................................................................24

         SECTION 2.19               Mandatory Assignment; Commitment Termination......................................26

ARTICLE III Representations and Warranties............................................................................26

         SECTION 3.01               Organization; Powers..............................................................26

         SECTION 3.02               Authorization.....................................................................26

         SECTION 3.03               Enforceability....................................................................26

         SECTION 3.04               Governmental Approvals............................................................27

         SECTION 3.05               Financial Statements..............................................................27

         SECTION 3.06               Properties........................................................................27

         SECTION 3.07               Litigation and Environmental Matters..............................................27

         SECTION 3.08               Compliance with Laws and Agreements...............................................27

         SECTION 3.09               Federal Reserve Regulations.......................................................28

         SECTION 3.10               Investment Company Act; Public Utility Holding Company Act........................28

         SECTION 3.11               Taxes.............................................................................28

         SECTION 3.12               ERISA.............................................................................28

         SECTION 3.13               Labor Matters.....................................................................28

         SECTION 3.14               Subsidiaries......................................................................28

         SECTION 3.15               Use of Proceeds...................................................................28

         SECTION 3.16               No Material Misstatements.........................................................29

ARTICLE IV Conditions of Lending; Covenants Relating to Assumption....................................................29

         SECTION 4.01               All Borrowings....................................................................29

         SECTION 4.02               Initial Conditions................................................................29

         SECTION 4.03               Covenants Relating to Assumption..................................................30

ARTICLE V Affirmative Covenants.......................................................................................31

         SECTION 5.01               Existence.........................................................................31

         SECTION 5.02               Financial Statements, Reports, etc................................................31
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                                       ii
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         SECTION 5.03               Maintaining Records...............................................................32

         SECTION 5.04               Notices of Material Events........................................................32

         SECTION 5.05               Existence; Conduct of Business....................................................32

         SECTION 5.06               Payment of Obligations............................................................32

         SECTION 5.07               Maintenance of Properties; Insurance..............................................33

         SECTION 5.08               Inspection Rights.................................................................33

         SECTION 5.09               Compliance........................................................................33

         SECTION 5.10               Use of Proceeds...................................................................33

         SECTION 5.11               Additional Subsidiary Guarantors..................................................33

ARTICLE VI Negative Covenants.........................................................................................33

         SECTION 6.01               Financial Covenants...............................................................33

         SECTION 6.02               Subsidiary Indebtedness...........................................................34

         SECTION 6.03               Liens.............................................................................35

         SECTION 6.04               Fundamental Changes...............................................................36

         SECTION 6.05               Investments, Loans, Advances, Guarantees and Acquisitions.........................36

         SECTION 6.06               Restricted Payments...............................................................36

         SECTION 6.07               Transactions with Affiliates......................................................37

         SECTION 6.08               Limitations on Sale and Leaseback Transactions and CMO Transactions...............37

ARTICLE VII Events of Default.........................................................................................37

ARTICLE VIII The Administrative Agent.................................................................................39

ARTICLE IX Miscellaneous..............................................................................................41

         SECTION 9.01               Notices...........................................................................41

         SECTION 9.02               Survival of Agreement.............................................................41

         SECTION 9.03               Binding Effect....................................................................42

         SECTION 9.04               Successors and Assigns............................................................42

         SECTION 9.05               Expenses; Indemnity...............................................................44
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                                      iii
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         SECTION 9.06               Applicable  Law...................................................................45

         SECTION 9.07               Waivers; Amendment................................................................45

         SECTION 9.08               Entire Agreement..................................................................45

         SECTION 9.09               Severability......................................................................45

         SECTION 9.10               Right of Setoff...................................................................45

         SECTION 9.11               Counterparts......................................................................46

         SECTION 9.12               Headings..........................................................................46

         SECTION 9.13               Release of Guarantees and Liens...................................................46

         SECTION 9.14               Confidentiality...................................................................46

         SECTION 9.15               Submission to Jurisdiction........................................................47

         SECTION 9.16               WAIVER OF JURY TRIAL..............................................................47

         SECTION 9.17               Withdrawal of Lucent..............................................................47
</TABLE>


EXHIBITS

Exhibit A             Form of Assignment and Acceptance
Exhibit B             Form of Borrowing Request
Exhibit C             Form of Closing Certificate
Exhibit D-1           Form of Opinion of Cravath, Swaine & Moore
Exhibit D-2           Form of Opinion of the Vice President-Law of the Borrower

SCHEDULES

Schedule 1.01         Commitments
Schedule 2.10         Allocation Matters
Schedule 3.14         Subsidiaries
Schedule 6.02         Existing Subsidiary Indebtedness
Schedule 6.03         Existing Liens


                                       iv
<PAGE>   6
                  364-DAY REVOLVING CREDIT AND TERM LOAN FACILITY AGREEMENT,
dated as of February 22, 2001, among AGERE SYSTEMS INC., a Delaware corporation
(the "Borrower"), LUCENT TECHNOLOGIES INC., a Delaware corporation ("Lucent"),
the several banks and other financial institutions or entities from time to time
parties to this Agreement (the "Lenders"), SALOMON SMITH BARNEY INC., as
Syndication Agent (in such capacity, the "Syndication Agent"), and THE CHASE
MANHATTAN BANK, as administrative agent for the Lenders.

                  The Borrower has agreed to assume, on the Assumption Effective
Date (as herein defined) immediately prior to the Agere IPO, all of the rights
and monetary obligations of Lucent under the Lucent Assumable Credit Agreement
(as herein defined) to the extent described in Section 2.01 below. The Lenders
have agreed to permit the assumption by the Borrower, on and after the
Assumption Effective Date, of all of Lucent's rights and monetary obligations
under the Lucent Assumable Credit Agreement and have agreed to extend, on and
after the Assumption Effective Date, up to $2,500,000,000 of credit to the
Borrower to enable it to (a) borrow on a revolving credit basis and at any time
and from time to time prior to the Maturity Date (as herein defined) a principal
amount at any time outstanding not in excess of the aggregate Revolving
Commitments and (b) assume the "Term Loans" made pursuant to the Lucent
Assumable Credit Agreement. The aggregate principal amount of such "Term Loans"
shall not, in any event, exceed $1,500,000,000. The proceeds of such borrowings
are to be used for capital expenditures, refunding of debt, support for
commercial paper and general corporate purposes, including working capital of
the Borrower and its Subsidiaries. The Lenders are willing to extend such credit
to the Borrower on the terms and subject to the conditions herein set forth.

                  Accordingly, Lucent, the Borrower, the Lenders and the
Administrative Agent agree as follows:

                                   ARTICLE I

                                   Definitions

                  SECTION 1.01 Defined Terms. As used in this Agreement, the
following terms shall have the meanings specified below:

                  "ABR Borrowing" shall mean a Borrowing comprised of ABR Loans.

                  "ABR Loan" shall mean any Loan bearing interest at a rate
determined by reference to the Alternate Base Rate in accordance with the
provisions of Article II.

                  "Administrative Agent" shall mean The Chase Manhattan Bank,
together with its affiliates, as an arranger of the Revolving Commitments and
Term Loans and as the administrative agent for the Lenders under this Agreement
and the other Loan Documents, together with any of its successors.

                  "Administrative Questionnaire" shall mean an administrative
questionnaire in a form approved by the Administrative Agent.

                  "Affiliate" shall mean, when used with respect to a specified
Person, another Person that directly or indirectly Controls or is Controlled by
or is under common Control with the Person specified.

                  "Agere Distribution" shall mean the distribution to Lucent's
securityholders of all of the common stock of the Borrower held by Lucent after
the Agere IPO.
<PAGE>   7
                                                                               2


                  "Agere IPO" shall mean the consummation of an initial public
offering of the common stock of the Borrower.

                  "Agere IPO Exchange" shall mean the exchange of Indebtedness
of Lucent for common stock of the Borrower in connection with the Agere IPO.

                  "Alternate Base Rate" shall mean, for any day, a rate per
annum (rounded upwards, if necessary, to the next 1/16 of 1%) equal to the
greater of (a) the Prime Rate in effect on such day and (b) the Federal Funds
Effective Rate in effect on such day plus 1/2 of 1%. For purposes hereof, "Prime
Rate" shall mean the rate of interest per annum publicly announced from time to
time by the Administrative Agent as its prime rate in effect at its principal
office in New York City; each change in the Prime Rate shall be effective on the
date such change is publicly announced as effective. For purposes hereof,
"Federal Funds Effective Rate" shall mean, 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 released on the next
succeeding Business Day by the Federal Reserve Bank of New York, or, if such
rate is not so released for any day which is a Business Day, the arithmetic
average (rounded upwards to the next 1/100th of 1%), as determined by the
Administrative Agent, of the quotations for the day of such transactions
received by the Administrative Agent from three Federal funds brokers of
recognized standing selected by it. If for any reason the Administrative Agent
shall have determined (which determination shall be conclusive absent manifest
error) that it is unable to ascertain the Federal Funds Effective Rate for any
reason, including the inability or failure of the Administrative Agent to obtain
sufficient quotations in accordance with the terms thereof, the Alternate Base
Rate shall be determined without regard to clause (b) of the first sentence of
this definition until the circumstances giving rise to such inability no longer
exist. Any change in the Alternate Base Rate due to a change in the Prime Rate
or the Federal Funds Effective Rate shall be effective on the effective date of
such change in the Prime Rate or the Federal Funds Effective Rate, respectively.

                  "Applicable Percentage" shall mean, on any date, the per annum
rate applicable on such date, as determined pursuant to the table set forth
below.

<TABLE>
<CAPTION>
                                                   Level I               Level II               Level III              Level IV
                                             Baa2/BBB or better          Baa3/BBB-               Ba1/BB+            Ba2/BB or less
------------------------------------------------------------------------------------------------------------------------------------
<S>                                          <C>                         <C>                    <C>                 <C>
 Facility Fee Rate                                  0.50%                  0.50%                  0.50%                  0.50%
------------------------------------------------------------------------------------------------------------------------------------
 Eurodollar Revolving Loans                         1.75%                  2.00%                  2.50%                  3.00%
------------------------------------------------------------------------------------------------------------------------------------
 Eurodollar Term Loans                              2.25%                  2.50%                  3.00%                  3.50%
------------------------------------------------------------------------------------------------------------------------------------
 ABR Revolving Loans                                0.75%                  1.00%                  1.50%                  2.00%
------------------------------------------------------------------------------------------------------------------------------------
 ABR Term Loans                                     1.25%                  1.50%                  2.00%                  2.50%
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

                  The Applicable Percentage shall be based upon the Borrower
Debt Ratings most recently notified to the Administrative Agent by the Borrower.
In the event that (a) the Borrower Debt Ratings fall within different
consecutive Levels, the higher-numbered Level shall apply, (b) the Borrower Debt
Ratings fall within different Levels, and the higher numbered Level is more than
one numbered Level higher than the lower numbered Level, then the next higher
numbered Level from that of the lower numbered Level shall apply, (c) the
Borrower Debt Rating of only one of the Rating Agencies is available, then the
Level determined by such Rating Agency shall apply and (d) a Borrower Debt
Rating is available from neither of the Rating Agencies, then Level IV shall
apply. Notwithstanding anything to the contrary in this definition, (i) until
the later of (x) the date that is six months after the Original Closing Date and
(y) the Exposure Reduction Date, Level II shall be deemed to be in effect at any
time when
<PAGE>   8
                                                                               3


Level I would otherwise be in effect and (ii) on each date that is 90 days or a
whole multiple thereof after the Original Closing Date, the Applicable
Percentage (other than the Facility Fee rate) shall increase by a further 0.25%
above the rate that would otherwise be in effect (and any increased pricing
effected prior to the Assumption Effective Date pursuant to the comparable
provision of the Lucent Assumable Credit Agreement shall continue to be in
effect subject to further increases on subsequent 90-day anniversaries of the
Original Closing Date), provided, that, effective on the Exposure Reduction
Date, the increases pursuant to this clause (ii) shall cease to apply.

                  "Arrangers" shall mean JP Morgan, a division of Chase
Securities Inc., and Salomon Smith Barney Inc.

                  "Assignment and Acceptance" shall mean an assignment and
acceptance entered into by a Lender and an assignee, and accepted by the
Administrative Agent, in the form of Exhibit A.

                  "Assumption Effective Date" shall mean the date on which the
Agere IPO shall occur.

                  "Attributable Debt" shall mean, as of the date of its
determination, the present value (discounted semiannually at an interest rate
implicit in the terms of the lease) of the obligation of a lessee for rental
payments pursuant to any Sale and Leaseback Transaction (reduced by the amount
of the rental obligations of any sublessee of all or part of the same property)
during the remaining term of such Sale and Leaseback Transaction (including any
period for which the lease relating thereto has been extended), such rental
payments not to include amounts payable by the lessee for maintenance and
repairs, insurance, taxes, assessments and similar charges and for contingent
rents (such as those based on sales); provided, however, that in the case of any
Sale and Leaseback Transaction in which the lease is terminable by the lessee
upon the payment of a penalty, Attributable Debt shall mean the lesser of the
present value of (a) the rental payments to be paid under such Sale and
Leaseback Transaction until the first date (after the date of such
determination) upon which it may be so terminated plus the then applicable
penalty upon such termination and (b) the rental payments required to be paid
during the remaining term of such Sale and Leaseback Transaction (assuming such
termination provision is not exercised).

                  "Board" shall mean the Board of Governors of the Federal
Reserve System of the United States.

                  "Borrower Debt Rating" shall mean any rating by a Rating
Agency with respect to the senior unsecured non-credit enhanced long-term debt
of the Borrower.

                  "Borrowing" shall mean a group of Loans of a single Type made
by the Lenders on a single date and as to which a single Interest Period is in
effect.

                  "Borrowing Request" shall mean a request made pursuant to
Section 2.03 in the form of Exhibit B.

                  "Business Day" shall mean any day (other than a day which is a
Saturday, Sunday or legal holiday in the State of New York) on which banks are
open for business in New York City; provided, however, that, when used in
connection with a Eurodollar Loan, the term "Business Day" shall also exclude
any day on which banks are not open for dealings in dollar deposits in the
London interbank market.

                  "Capital Lease Obligations" of any Person shall mean 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
<PAGE>   9
                                                                               4


for as capital leases on a balance sheet of such Person under GAAP, and the
amount of such obligations shall be the capitalized amount thereof determined in
accordance with GAAP.

                  "Capital Markets Event" shall mean the issuance or incurrence
by the Borrower or any of its Subsidiaries of (a) any Indebtedness for borrowed
money in respect of (1) debt securities issued in a public offering or a private
placement or (2) syndicated lines of credit or other credit facilities or (b)
Indebtedness pursuant to any receivables securitization or CMO Transaction, but
excluding (i) the Agere IPO and the Agere IPO Exchange, (ii) issuances of
Capital Stock of the Borrower pursuant to any compensation plan for directors,
employees or consultants of the Borrower and its Subsidiaries, (iii)
refinancings of Indebtedness maturing within one year from the date of the
refinancing (regardless of whether the refinancing occurs before or after the
maturity date of the Indebtedness refinanced), (iv) commercial paper and other
Short-Term Indebtedness (other than Short-Term Indebtedness under a syndicated
line of credit or other credit facility), (v) working capital facilities entered
into by Foreign Subsidiaries of the Borrower, (vi) any transaction described in
clause (a) or (b) above consummated by a Foreign Subsidiary, (vii) any
incurrence of Indebtedness by a Foreign Subsidiary pursuant to Section
6.02(j)(ii) and (viii) intercompany issuances of Capital Stock to the Borrower
or any Subsidiary and intercompany Indebtedness incurred pursuant to loans made
by the Borrower or any Subsidiary.

                  "Capital Stock" shall mean 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.

                  "Change in Control" shall mean (a) the acquisition of
ownership, directly or indirectly, beneficially or of record, by any "person" or
"group" (within the meaning of the Exchange Act and the rules of the SEC
thereunder as in effect on the Original Closing Date), of shares representing
more than 30% of the aggregate ordinary voting power represented by the issued
and outstanding capital stock of Lucent (or after the Agere Distribution, the
Borrower), (b) prior to the Agere Distribution, the Borrower shall cease to be a
Subsidiary of Lucent or (c) occupation of a majority of the seats (other than
vacant seats) on the board of directors of Lucent (or, after the Agere
Distribution, the Borrower) by Persons who were neither (i) nominated by the
board of directors of Lucent (or, after the Agere Distribution, the Borrower)
nor (ii) appointed by directors so nominated.

                  "CMO Transaction" shall mean any financing arrangement
involving the issuance of securities supported by Liens (or Indebtedness secured
by Liens) on real estate owned by the Borrower or any Subsidiary.

                  "Code" shall mean the Internal Revenue Code of 1986, as the
same may be amended from time to time.

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

                  "Confidential Information Memorandum" shall mean the
Confidential Information Memorandum, dated February 2001, relating to Agere and
its Subsidiaries and distributed to certain Lenders in connection with credit
facility provided hereby.

                  "Consolidated EBITDA" shall mean, 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
<PAGE>   10
                                                                               5


expense, (d) amortization of intangibles (including, but not limited to,
goodwill) and organization costs, (e) charges or expenses relating to purchased
in-process research and development, (f) the after-tax effects of (i) the first
$75,000,000 of pre-tax business restructuring charges or expenses taken after
the Assumption Effective Date and (ii) in addition, the first $250,000,000 of
pre-tax business restructuring charges or expenses taken after the Assumption
Effective Date to the extent in the case of this clause (ii) relating to closure
of fabrication facilities, (g) one-time charges or expenses taken after the
Assumption Effective Closing Date resulting from the separation of the Borrower
from Lucent, including without limitation, charges or expenses resulting from
the transactions contemplated by the separation and distribution agreement, the
Agere IPO or the Agere Distribution, in an aggregate amount not to exceed
$225,000,000, (h) any extraordinary, unusual or non-recurring non-cash expenses
or losses (including, whether or not otherwise includable as a separate item in
the statement of such Consolidated Net Income for such period, non-cash losses
on sales of assets outside of the ordinary course of business), and (i) any
other non-cash charges, and minus, to the extent included in the statement of
such Consolidated Net Income for such period, the sum of (i) interest income,
(ii) any extraordinary, unusual or non-recurring income or gains (including,
whether or not otherwise includable as a separate item in the statement of such
Consolidated Net Income for such period, gains on the sales of assets outside of
the ordinary course of business) and (iii) any other non-cash income, all as
determined on a consolidated basis.

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

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

                  "Consolidated Leverage Ratio" shall mean, as at the last day
of any period, the ratio of (a) Consolidated Total Debt on such day to (b)
Consolidated EBITDA for such period.

                  "Consolidated Net Income" shall mean, for any period, the
consolidated net income (or loss) of the Borrower and its Subsidiaries,
determined on a consolidated basis in accordance with GAAP; provided that there
shall be excluded the income (or deficit) of any Person accrued prior to the
date it becomes a Subsidiary of the Borrower or is merged into or consolidated
with the Borrower or any of its Subsidiaries.

                  "Consolidated Total Debt" shall mean, at any date, (a) the
aggregate principal amount of all Indebtedness of the Borrower and its
Subsidiaries that would appear on a consolidated balance sheet of the Borrower
at such date, determined on a consolidated basis in accordance with GAAP minus
(b) the amount, if any, by which (i) the aggregate amount of cash and cash
equivalents of the Borrower and its Subsidiaries that would appear on a
consolidated balance sheet of the Borrower at such date exceeds (ii)
$500,000,000.

                  "Contractual Obligation" shall mean, 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.
<PAGE>   11
                                                                               6


                  "Control" shall mean the possession, directly or indirectly,
of the power to direct or cause the direction of the management or policies of a
Person, whether through the ownership of voting shares, by contract or
otherwise. "Controlling" and "Controlled" have meanings correlative thereto.

                  "Default" shall mean any event or condition which upon notice,
lapse of time or both would constitute an Event of Default.

                  "dollars" or "$" shall mean lawful money of the United States
of America.

                  "Domestic Subsidiary" shall mean any Subsidiary of the
Borrower organized under the laws of any jurisdiction within the United States
of America.

                  "Environmental Laws" shall mean all laws, rules, regulations,
codes, ordinances, orders, decrees, judgments, injunctions, notices or binding
agreements issued, promulgated or entered into by any Governmental Authority,
relating in any way to the environment, preservation or reclamation of natural
resources, the management, release or threatened release of any Hazardous
Material or to health and safety matters.

                  "Environmental Liability" shall mean any liability, contingent
or otherwise (including any liability for damages, costs of environmental
remediation, fines, penalties or indemnities), of the Borrower or any Subsidiary
directly or indirectly resulting from or based upon (a) violation of any
Environmental Law, (b) the generation, use, handling, transportation, storage,
treatment or disposal of any Hazardous Materials, (c) exposure to any Hazardous
Materials, (d) the release or threatened release of any Hazardous Materials into
the environment or (e) any contract, agreement or other consensual arrangement
pursuant to which liability is assumed or imposed with respect to any of the
foregoing.

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

                  "ERISA Affiliate" shall mean any trade or business (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.

                  "ERISA Event" shall mean (a) any "reportable event", as
defined in Section 4043 of ERISA or the regulations issued thereunder with
respect to a Plan (other than an event for which the 30-day notice period is
waived); (b) the existence with respect to any Plan of an "accumulated funding
deficiency" (as defined in Section 412 of the Code or Section 302 of ERISA),
whether or not waived; (c) the filing pursuant to Section 412(d) of the Code or
Section 303(d) of ERISA of an application for a waiver of the minimum funding
standard with respect to any Plan; (d) the incurrence by the Borrower or any of
its ERISA Affiliates of any liability under Title IV of ERISA with respect to
the termination of any Plan; (e) the receipt by the Borrower or any ERISA
Affiliate from the PBGC or a plan administrator of any notice relating to an
intention to terminate any Plan or Plans or to appoint a trustee to administer
any Plan; (f) the incurrence by the Borrower or any of its ERISA Affiliates of
any liability with respect to the withdrawal or partial withdrawal from any Plan
or Multiemployer Plan; or (g) the receipt by the Borrower or any ERISA Affiliate
of any notice, or the receipt by any Multiemployer Plan from the Borrower or any
ERISA Affiliate of any notice, concerning the imposition of Withdrawal Liability
or a determination that a Multiemployer Plan is, or is expected to be, insolvent
or in reorganization, within the meaning of Title IV of ERISA.

                  "Eurodollar Borrowing" shall mean a Borrowing comprised of
Eurodollar Loans.
<PAGE>   12
                                                                               7


                  "Eurodollar Loan" shall mean any Loan bearing interest at a
rate determined by reference to the LIBO Rate in accordance with the provisions
of Article II.

                  "Event of Default" shall have the meaning assigned to such
term in Article VII.

                  "Exchange Act" shall mean the Securities Exchange Act of 1934,
as amended.

                  "Excluded Subsidiary" shall mean the following Non-Wholly
Owned Subsidiaries: Silicon Manufacturing Partners Pte Ltd, LD Fiber Optics LLC,
FiNET Technologies, and Lucent Technologies Semiconductor Marketing Japan.

                  "Exposure Reduction Date" shall mean the first date after the
Original Closing Date on which the Total Exposure is $1,000,000,000 or less.

                  "Facility Fees" shall have the meaning assigned to such term
in Section 2.05(a).

                  "Financial Officer" of any corporation shall mean the Chief
Financial Officer, principal accounting officer, Treasurer or Assistant
Treasurer of such corporation.

                  "Foreign Subsidiary" shall mean any Subsidiary of the Borrower
that is not a Domestic Subsidiary.

                  "GAAP" shall mean generally accepted accounting principles,
applied on a consistent basis.

                  "Governmental Authority" shall mean the government of the
United States of America, any other nation or any political subdivision thereof,
whether state or local, and any agency, authority, instrumentality, regulatory
body, court, central bank or other entity exercising executive, legislative,
judicial, taxing, regulatory or administrative powers or functions of or
pertaining to government.

                  "Guarantee" of or by any Person (the "guarantor") shall mean
any obligation, contingent or otherwise, of the guarantor guaranteeing or having
the economic effect of guaranteeing any Indebtedness or other obligation of any
other Person (the "primary obligor") in any manner, whether directly or
indirectly, and including any obligation of the guarantor, direct or indirect,
(a) to purchase or pay (or advance or supply funds for the purchase or payment
of) such Indebtedness or other obligation or to purchase (or to advance or
supply funds for the purchase of) any security for the payment thereof, (b) to
purchase or lease property, securities or services for the purpose of assuring
the owner of such Indebtedness or other obligation of the payment thereof, (c)
to maintain working capital, equity capital or any other financial statement
condition or liquidity of the primary obligor so as to enable the primary
obligor to pay such Indebtedness or other obligation or (d) as an account party
in respect of any letter of credit or letter of guaranty issued to support such
Indebtedness or obligation; provided, that the term Guarantee shall not include
endorsements for collection or deposit in the ordinary course of business. The
amount of any Guarantee made by any guarantor 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 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, unless such primary obligation and the
maximum amount for which such guarantor may be liable are not stated or
determinable, in which case the amount of such Guarantee shall be such
guarantor's maximum reasonably anticipated liability in respect thereof as
determined by the Borrower in good faith.
<PAGE>   13
                                                                               8


                  "Guarantee and Collateral Agreement" shall mean the Guarantee
and Collateral Agreement to be executed and delivered by each Subsidiary
Guarantor pursuant to Sections 4.03(a) and (b), in form and substance reasonably
satisfactory to the Administrative Agent.

                  "Hazardous Materials" shall mean all explosive or radioactive
substances or wastes and all hazardous or toxic substances, wastes or other
pollutants, including petroleum or petroleum distillates, asbestos or asbestos
containing materials, polychlorinated biphenyls, radon gas, infectious or
medical wastes and all other substances or wastes of any nature regulated
pursuant to any Environmental Law.

                  "Hedging Agreement" shall mean (a) any interest rate
protection agreement, foreign currency exchange agreement, commodity price
protection agreement or other interest or currency exchange rate or commodity
price hedging arrangement and (b) any hedging agreement in respect of the
Borrower's common stock entered into in order to hedge the Borrower's exposure
under its stock option plans or other benefit plans for employees, directors or
consultants of the Borrower and its Subsidiaries.

                  "Indebtedness" of any Person shall mean, without duplication,
(a) all obligations of such Person for borrowed money or with respect to
deposits or advances of any kind, (b) all obligations of such Person evidenced
by bonds, debentures, notes or similar instruments, (c) all obligations of such
Person upon which interest charges are customarily paid, (d) all obligations of
such Person under conditional sale or other title retention agreements relating
to property acquired by such Person, (e) all obligations of such Person in
respect of the deferred purchase price of property or services (excluding
current accounts payable incurred in the ordinary course of business), (f) all
Indebtedness of others secured by (or for which the holder of such Indebtedness
has an existing right, contingent or otherwise, to be secured by) any Lien on
property owned or acquired by such Person, whether or not the Indebtedness
secured thereby has been assumed, (g) all Guarantees by such Person of
Indebtedness of others, (h) all Capital Lease Obligations of such Person, (i)
all obligations, contingent or otherwise, of such Person as an account party in
respect of letters of credit and letters of guaranty and (j) all obligations,
contingent or otherwise, of such Person in respect of bankers' acceptances. 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 provide that such Person is not liable therefor.

                  "Interest Payment Date" shall mean, with respect to any Loan,
the last day of the Interest Period applicable thereto and, in the case of a
Eurodollar Loan with an Interest Period of more than three months' duration,
each day that would have been an Interest Payment Date for such Loan had
successive Interest Periods of three months' duration been in effect with
respect thereto and, in addition, the date of any conversion of such Loan to a
Loan of a different Type.

                  "Interest Period" shall mean (a) as to any Eurodollar
Borrowing, the period commencing on the date of such Borrowing or on the last
day of the immediately preceding Interest Period applicable to such Borrowing,
as the case may be, and ending on the numerically corresponding day (or, if
there is no numerically corresponding day, on the last day) in the calendar
month that is 1, 2, 3 or 6 months thereafter, as the Borrower may elect and (b)
as to any ABR Borrowing, the period commencing on the date of such Borrowing or
on the last day of the immediately preceding Interest Period applicable to such
Borrowing, as the case may be, and ending on the earliest of (i) the next
succeeding March 31, June 30, September 30 or December 31, (ii) the Maturity
Date, and (iii) the date such Borrowing is converted to a Borrowing of a
different Type in accordance with Section 2.04 or repaid or prepaid in
accordance with Section 2.06 or 2.11; provided, however, that if any Interest
Period would end on a day other than a Business Day, such Interest Period shall
be extended to the next succeeding Business Day unless, in the case of
Eurodollar Loans only, such next succeeding Business Day would fall in the next
calendar month,
<PAGE>   14
                                                                               9


in which case such Interest Period shall end on the next preceding Business Day.
Interest shall accrue from and including the first day of an Interest Period to
but excluding the last day of such Interest Period. Except as provided in
Section 2.04, the Interest Period of any Loan (as defined under the Lucent
Assumable Credit Agreement) outstanding under the Lucent Assumable Credit
Agreement on the Assumption Effective Date shall remain the same hereunder as
thereunder.

                  "Investments" shall have the meaning set forth in Section
6.05.

                  "LIBO Rate" shall mean, with respect to any Eurodollar
Borrowing for any Interest Period, the rate appearing on Page 3750 of the
Telerate Service (or on any successor or substitute page of such Service, or any
successor to or substitute for such Service, providing rate quotations
comparable to those currently provided on such page of such Service, as
determined by the Administrative Agent from time to time for purposes of
providing quotations of interest rates applicable to dollar deposits in the
London interbank market) at approximately 11:00 a.m., London time, two Business
Days prior to the commencement of such Interest Period, as the rate for dollar
deposits with a maturity comparable to such Interest Period. In the event that
such rate is not available at such time for any reason, then the "LIBO Rate"
with respect to such Eurodollar Borrowing for such Interest Period shall be the
rate at which dollar deposits of $5,000,000 and for a maturity comparable to
such Interest Period are offered by the principal London office of the
Administrative Agent in immediately available funds in the London interbank
market at approximately 11:00 a.m., London time, two Business Days prior to the
commencement of such Interest Period.

                  "Lien" shall mean, with respect to any asset, (a) any
mortgage, deed of trust, lien, pledge, hypothecation, encumbrance, charge or
security interest in, on or of such asset, (b) the interest of a vendor or a
lessor under any conditional sale agreement, capital lease or title retention
agreement (or any financing lease having substantially the same economic effect
as any of the foregoing) relating to such asset and (c) in the case of
securities, any purchase option, call or similar right of a third party with
respect to such securities.

                  "Loan" shall mean any Revolving Loan or Term Loan.

                  "Loan Documents" shall mean this Agreement and the Security
Documents.

                  "Loan Parties" shall mean the Borrower and each Subsidiary
Guarantor.

                  "Lucent" shall have the meaning set forth in the preamble.

                  "Lucent Assumable Credit Agreement" shall mean the
$2,500,000,000 Credit Agreement dated as of the Original Closing Date among
Lucent, the lenders party thereto, Salomon Smith Barney Inc., as syndication
agent, and The Chase Manhattan Bank, as administrative agent; which agreement
shall be terminated in accordance with its terms on the Assumption Effective
Date.

                  "Margin Regulations" shall mean Regulations T, U and X of the
Board as from time to time in effect, and all official rulings and
interpretations thereunder or thereof.

                  "Margin Stock" shall have the meaning given such term under
Regulation U of the Board.

                  "Material Adverse Effect" shall mean a materially adverse
effect on the business, assets, operations or condition, financial or otherwise,
of the Borrower and its Subsidiaries taken as a whole. It is understood that (i)
failure by the Borrower to consummate the Agere Distribution and (ii) a change
in
<PAGE>   15
                                                                              10


the Borrower Debt Ratings or other credit ratings by any rating agency shall
not, in each case in and of itself, constitute a Material Adverse Effect.

                  "Material Domestic Subsidiary" shall mean any Domestic
Subsidiary that is a Material Subsidiary.

                  "Material Foreign Subsidiary" shall mean any Foreign
Subsidiary that is a Material Subsidiary.

                  "Material Indebtedness" shall mean Indebtedness (other than
the Loans), or obligations in respect of one or more Hedging Agreements, of any
one or more of the Borrower and its Subsidiaries in an aggregate principal
amount exceeding $100,000,000. For purposes of determining Material
Indebtedness, the "principal amount" of the obligations of the Borrower or any
Subsidiary in respect of any Hedging Agreement at any time shall be the maximum
aggregate amount (giving effect to any netting agreements) that the Borrower or
such Subsidiary would be required to pay if such Hedging Agreement were
terminated at such time.

                  "Material Subsidiary" shall mean any Subsidiary of the
Borrower the assets or revenues of which are, at the time of determination,
equal to or greater than one percent of the consolidated assets or consolidated
revenues, respectively, of the Borrower and its Subsidiaries at such time
(determined, in the case of revenues, in respect of the most recent period of
four consecutive fiscal quarters of the Borrower for which the relevant
financial information is available). Such determinations shall, where
applicable, be made excluding intercompany receivables and revenues that would
be eliminated upon consolidation in accordance with GAAP.

                  "Maturity Date" shall mean February 21, 2002.

                  "Moody's" shall mean Moody's Investors Service, Inc.

                  "Multiemployer Plan" shall mean a multiemployer plan as
defined in Section 4001(a)(3) of ERISA.

                  "Net Cash Proceeds" shall mean, in connection with any
transaction, the cash proceeds received by the Borrower or any of its
Subsidiaries from such issuance or incurrence, net of reasonable attorneys'
fees, investment banking fees, accountants' fees, underwriting discounts and
commissions and other customary fees and expenses actually incurred in
connection therewith. To the extent that any net amounts described above are
received by a Non-Wholly Owned Subsidiary, only a percentage thereof equal to
the Borrower's direct or indirect percentage ownership interest in such
Subsidiary (or such greater amount as shall have been actually dividended or
otherwise distributed to the Borrower or a Wholly Owned Subsidiary) shall
constitute "Net Cash Proceeds".

                  "Non-Wholly Owned Subsidiary" shall mean any Subsidiary of the
Borrower that is not a Wholly Owned Subsidiary.

                  "Obligations" shall mean the unpaid principal of and interest
on (including interest accruing after the maturity of the Loans and interest
accruing after the filing of any petition in bankruptcy, or the commencement of
any insolvency, reorganization or like proceeding, relating to the Borrower,
whether or not a claim for post-filing or post-petition interest is allowed in
such proceeding) the Loans and all other obligations and liabilities of the
Borrower to the Administrative Agent or to any Lender, 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
<PAGE>   16
                                                                              11


or any other document made, delivered or given in connection herewith or
therewith, whether on account of principal, interest, fees, indemnities, costs,
expenses (including all fees, charges and disbursements of counsel to the
Administrative Agent or to any Lender that are required to be paid by the
Borrower pursuant hereto) or otherwise.

                  "Original Closing Date" shall mean February 22, 2001.

                  "Permitted Encumbrances" shall mean:

                  (a) Liens imposed by law for taxes that are not yet due or are
         being contested in compliance with Section 5.06;

                  (b) carriers', warehousemen's, mechanics', materialmen's,
         repairmen's and other like Liens imposed by law, arising in the
         ordinary course of business and securing obligations that are not
         overdue by more than 30 days or are being contested in compliance with
         Section 5.06;

                  (c) pledges and deposits made in the ordinary course of
         business in compliance with workers' compensation, unemployment
         insurance and other social security laws or regulations;

                  (d) deposits of cash or Permitted Investments to secure the
         performance of bids, trade contracts, leases, statutory obligations,
         surety and appeal bonds, performance bonds and other obligations of a
         like nature, in each case in the ordinary course of business;

                  (e) easements, zoning restrictions, rights-of-way and similar
         encumbrances on real property imposed by law or arising in the ordinary
         course of business that do not secure any monetary obligations and do
         not materially detract from the value of the affected property or
         interfere with the ordinary conduct of business of the Borrower or any
         Subsidiary; and

                  (f) unexercised bankers' Liens;

provided that the term "Permitted Encumbrances" shall not include any Lien
securing Indebtedness.

                  "Person" shall mean any natural person, corporation, limited
liability company, trust, joint venture, association, company, partnership,
Governmental Authority or other entity.

                  "Plan" shall mean any employee pension benefit plan (other
than a Multiemployer Plan) subject to the provisions of Title IV of ERISA or
Section 412 of the Code or Section 302 of ERISA, and in respect of which the
Borrower or any ERISA Affiliate is (or, if such plan were terminated, would
under Section 4069 of ERISA be deemed to be) an "employer" as defined in Section
3(5) of ERISA.

                  "Rating Agencies" shall mean S&P and Moody's.

                  "Register" shall have the meaning given such term in Section
9.04(d).

                  "Required Lenders" shall mean, at any time, Lenders having
Loans and unused Commitments representing at least 51% of the sum of the
aggregate outstanding principal amount of the Loans and the aggregate amount of
the unused Commitments.

                  "Requirement of Law" shall mean, 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
<PAGE>   17
                                                                              12


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" of any corporation shall mean any
executive officer or Financial Officer of such corporation and any other officer
or similar official thereof responsible for the administration of the
obligations of such corporation in respect of this Agreement.

                  "Restricted Payment" shall mean any dividend or other
distribution (whether in cash, securities or other property) with respect to any
shares of any class of Capital Stock of the Borrower or any Subsidiary, or any
payment (whether in cash, securities or other property), including any sinking
fund or similar deposit, on account of the purchase, redemption, retirement,
acquisition, cancellation or termination of any such shares of Capital Stock of
the Borrower or any Subsidiary or any option, warrant or other right to acquire
any such shares of Capital Stock of the Borrower or any Subsidiary.

                  "Revolving Commitment" shall mean, as to any Lender, the
obligation of such Lender, if any, to make Revolving Loans in an aggregate
principal amount not to exceed the amount set forth under the heading "Revolving
Commitment" opposite such Lender's name on Schedule 1.01A 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.

                  "Revolving Lender" shall mean any Lender holding a Revolving
Commitment or Revolving Loans.

                  "Revolving Loan" shall have the meaning given such term in
Section 2.01.

                   "Sale and Leaseback Transaction" shall mean any arrangement
with any Person providing for the leasing by the Borrower or any of its
Subsidiaries of any property that has been or is to be sold or transferred by
the Borrower or such Subsidiary to such Person, other than (a) leases between
the Borrower and a Subsidiary or between Subsidiaries of the Borrower and (b)
leases of property executed by the time of, or within 180 days after the latest
of, the acquisition, the completion of construction or improvement of such
property, or the commencement of commercial operation of such property.

                  "S&P" shall mean Standard and Poor's Ratings Services, a
division of The McGraw-Hill Companies, Inc.

                  "SEC" shall mean the Securities and Exchange Commission.

                  "Security Documents" shall mean any documents required to be
delivered pursuant to Section 4.03(b) (including the Guarantee and Collateral
Agreement), in each case in form and substance reasonably satisfactory to the
Administrative Agent, for the purpose of securing the Obligations or the
obligations under the Guarantee and Collateral Agreement, as applicable, with
substantially all the existing and future domestic tangible and intangible
assets of the Borrower and the Subsidiary Guarantors, including the stock of
Material Domestic Subsidiaries, 65% of the stock of Material Foreign
Subsidiaries (to the extent directly owned by a Loan Party), material real
property, material intellectual property, accounts (other than accounts included
in any accounts receivable securitization), equipment and inventory, subject to
reasonable and appropriate exceptions to be determined by the Administrative
Agent (with, in any event, appropriate exceptions being made with respect to any
assets where the cost or complexity of taking a security interest therein is
disproportionate and an exclusion for the proceeds of the Agere IPO and
investments in cash equivalents and similar financial instruments made with such
proceeds).
<PAGE>   18
                                                                              13


                  "Short-Term Indebtedness" shall mean any Indebtedness of any
Person (other than under any line of credit or other credit facility) that
matures within one year from the date of its creation and is not renewable or
extendible at the option of such Person (other than pursuant to an extension
option contained in extendible commercial notes or other notes issued in lieu of
commercial paper).

                  "Subsidiary" shall mean any corporation, a majority of the
Voting Shares of which are at the time owned or controlled, directly or
indirectly, by the Borrower or by one or more Subsidiaries of the Borrower,
excluding (i) any Excluded Subsidiary and (ii) any such Person that (a) would
not constitute a consolidated subsidiary of the Borrower in accordance with GAAP
and (b) is not Controlled (directly or indirectly) by the Borrower. Unless
otherwise qualified, all references to a "Subsidiary" or to "Subsidiaries" in
this Agreement shall refer to a Subsidiary or Subsidiaries of the Borrower.

                  "Subsidiary Guarantors" shall mean each Wholly Owned Material
Domestic Subsidiary.

                  "Taxes" shall mean any and all present or future taxes,
levies, imposts, duties, deductions, charges or withholdings imposed by any
Governmental Authority.

                  "Term Lender" shall mean any Lender holding a Term Loan.

                  "Term Loan" shall mean any "Term Loan" made under the Lucent
Assumable Credit Agreement and assumed by the Borrower pursuant to Section 2.01.

                  "Total Exposure" shall mean, on any date, the sum of (a) the
aggregate amount of the Revolving Commitments then in effect and (b) the
aggregate principal amount of the Term Loans then outstanding.

                  "Total Revolving Commitment" shall mean, at any time, the
aggregate amount of Revolving Commitments of the Lenders, as in effect at such
time.

                  "Transactions" shall have the meaning assigned to such term in
Section 3.02.

                  "Type", when used in respect of any Loan or Borrowing, shall
refer to the Rate by reference to which interest on such Loan or on the Loans
comprising such Borrowing is determined. For purposes hereof, "Rate" shall
include the LIBO Rate and the Alternate Base Rate.

                  "Voting Shares" shall mean, as to shares of a particular
corporation, outstanding shares of stock of any class of such corporation
entitled to vote in the election of directors, excluding shares entitled so to
vote only upon the happening of some contingency.

                  "Wholly Owned Material Domestic Subsidiary" shall mean any
Wholly Owned Subsidiary of the Borrower that is a Domestic Subsidiary and a
Material Subsidiary.

                  "Wholly Owned Subsidiary" shall mean, 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.

                  "Withdrawal Liability" shall mean liability to a Multiemployer
Plan as a result of a complete or partial withdrawal from such Multiemployer
Plan, as such terms are defined in Part I of Subtitle E of Title IV of ERISA.
<PAGE>   19
                                                                              14


                  SECTION 1.02 Terms Generally. For the purposes of this
Agreement and the other Loan Documents, (a) the definitions in Section 1.01
shall apply equally to both the singular and plural forms of the terms defined;
(b) whenever the context may require, any pronoun shall include the
corresponding masculine, feminine and neuter forms; (c) the words "include,"
"includes" and "including" shall be deemed to be followed by the phrase "without
limitation"; (d) 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 and (e) references to
agreements or other Contractual Obligations shall, unless otherwise specified,
be deemed to refer to such agreements or Contractual Obligations as amended,
supplemented, restated or otherwise modified from time to time. All references
herein to Articles, Sections, Exhibits and Schedules shall be deemed references
to Articles and Sections of, and Exhibits and Schedules to, this Agreement
unless the context shall otherwise require.

                  SECTION 1.03 Accounting Terms; GAAP. Except as otherwise
expressly provided herein, all terms of an accounting or financial nature shall
be construed in accordance with GAAP, as in effect from time to time; provided
that, if the Borrower notifies the Administrative Agent that the Borrower
requests an amendment to any provision hereof to eliminate the effect of any
change occurring after the Original Closing Date in GAAP or in the application
thereof on the operation of such provision (or if the Administrative Agent
notifies the Borrower that the Required Lenders request an amendment to any
provision hereof for such purpose), regardless of whether any such notice is
given before or after such change in GAAP or in the application thereof, then
such provision shall be interpreted on the basis of GAAP as in effect and
applied immediately before such change shall have become effective until such
notice shall have been withdrawn or such provision amended in accordance
herewith.

                  SECTION 1.04 Loan Parties and Loan Documents. References
herein to Loan Parties shall be deemed to mean the Borrower, and references
herein to Loan Documents shall be deemed to mean this Agreement, in each case
until such time as the Security Documents are entered into pursuant to Section
4.03. Without limiting the generality of the foregoing, the representations and
warranties in Article III shall not apply to Loan Parties other than the
Borrower or Loan Documents other than this Agreement until such time.

                  SECTION 1.05 Schedule 2.10. The requirements of Schedule 2.10
shall apply notwithstanding anything to the contrary in this Agreement.

                                   ARTICLE II

                                   The Credits

                  SECTION 2.01 Assumption of Obligations; Commitments. On the
Assumption Effective Date, immediately prior to the Agere IPO, but subject to
the satisfaction of the conditions set forth in Section 4.03, (i) Lucent agrees
to assign (and shall be deemed to have assigned without the necessity of any
assignment agreement) all of its rights and monetary obligations (including all
outstanding "Loans" and accrued interest thereon and accrued fees thereunder),
under the Lucent Assumable Credit Agreement to the Borrower and (ii) the
Borrower agrees to assume (and shall be deemed to have assumed without the
necessity of any separate assumption agreement) from Lucent all of Lucent's
rights and monetary obligations under the Lucent Assumable Credit Agreement
(including any monetary obligations pursuant to provisions that survive the
termination of the Lucent Assumable Credit Agreement, it being understood that,
although such provisions shall survive such termination, the monetary
obligations resulting therefrom shall be obligations of the Borrower).
<PAGE>   20
                                                                              15


                  Subject to the terms and conditions and relying upon the
representations and warranties herein set forth, each Lender consents to the
assignment by Lucent and the assumption by the Borrower of Lucent's rights and
monetary obligations under the Lucent Assumable Credit Agreement and agrees,
severally and not jointly, to make revolving credit loans (together with any
"Revolving Loans" under the Lucent Assumable Credit Agreement assumed as
described above, the "Revolving Loans") to the Borrower, at any time and from
time to time on and after the Assumption Effective Date and until the earlier of
the Maturity Date and the termination of the Revolving Commitment of such
Lender, in an aggregate principal amount (including any Loans outstanding on the
Assumption Effective Date) at any time outstanding not to exceed such Lender's
Revolving Commitment. Such Revolving Commitments may be terminated or reduced
from time to time pursuant to Section 2.10.

                  Within the foregoing limits, the Borrower may borrow, pay or
prepay and reborrow Revolving Loans hereunder, on and after the Assumption
Effective Date and until the Maturity Date, subject to the terms, conditions and
limitations set forth herein.

                  Prepayments of the Term Loans may not be reborrowed.

                  SECTION 2.02 Revolving Loans. (a) Each Revolving Loan shall be
made as part of a Borrowing consisting of Revolving Loans made by the Revolving
Lenders ratably in accordance with their respective Revolving Commitments;
provided, however, that the failure of any Revolving Lender to make any
Revolving Loan shall not in itself relieve any other Revolving Lender of its
obligation to lend hereunder (it being understood, however, that no Revolving
Lender shall be responsible for the failure of any other Revolving Lender to
make any Revolving Loan required to be made by such other Revolving Lender). The
Revolving Loans comprising any Borrowing shall be in an aggregate principal
amount which is an integral multiple of $10,000,000 and not less than
$20,000,000 (or an aggregate principal amount equal to the remaining balance of
the available Revolving Commitments).

                  (b) Each Borrowing shall be comprised entirely of Eurodollar
Loans or ABR Loans, as the Borrower may request pursuant to Section 2.03.
Borrowings of more than one Type may be outstanding at the same time; provided,
however, that the Borrower shall not be entitled to request any Borrowing which,
if made, would result in an aggregate of more than 20 separate Borrowings
comprised of Eurodollar Loans being outstanding hereunder at any one time. For
purposes of the foregoing, Loans having different Interest Periods, regardless
of whether they commence on the same date, shall be considered separate Loans.

                  (c) Subject to Section 2.04, each Revolving Lender shall make
each Revolving Loan to be made by it hereunder on the proposed date thereof by
wire transfer of immediately available funds to the Administrative Agent in New
York, New York, not later than 12:00 noon, New York City time, and the
Administrative Agent shall by 3:00 p.m., New York City time, credit the amounts
so received to the general deposit account of the Borrower with the
Administrative Agent or, if a Borrowing shall not occur on such date because any
condition precedent herein specified shall not have been met, return the amounts
so received to the respective Revolving Lenders. Revolving Loans shall be made
by the Revolving Lenders pro rata in accordance with Section 2.15. Unless the
Administrative Agent shall have received notice from a Revolving Lender prior to
the date of any Borrowing that such Revolving Lender will not make available to
the Administrative Agent such Revolving Lender's portion of such Borrowing, the
Administrative Agent may assume that such Revolving Lender has made such portion
available to the Administrative Agent on the date of such Borrowing in
accordance with this paragraph (c) and the Administrative Agent may, in reliance
upon such assumption, make available to the Borrower on such date a
corresponding amount. If and to the extent that such Revolving Lender shall not
have made such portion available to the Administrative Agent, such Lender and
the Borrower severally agree to repay to
<PAGE>   21
                                                                              16


the Administrative Agent forthwith on demand such corresponding amount together
with interest thereon, for each day from the date such amount is made available
to the Borrower until the date such amount is repaid to the Administrative Agent
at (i) in the case of the Borrower, the interest rate applicable at the time to
the Revolving Loans comprising such Borrowing and (ii) in the case of such
Revolving Lender, the Federal Funds Effective Rate. If such Revolving Lender
shall repay to the Administrative Agent such corresponding amount, such amount
shall constitute such Revolving Lender's Revolving Loan as part of such
Borrowing for purposes of this Agreement.

                  SECTION 2.03 Borrowing Procedure. In order to request a
Borrowing of Revolving Loans, the Borrower shall hand deliver or telecopy to the
Administrative Agent a duly completed Borrowing Request (a) in the case of a
Eurodollar Borrowing, not later than 10:30 a.m., New York City time, three
Business Days before a proposed Borrowing and (b) in the case of an ABR
Borrowing, not later than 10:30 a.m., New York City time, on the day of a
proposed Borrowing. Such notice shall be irrevocable and shall in each case
specify (i) whether the Borrowing then being requested is to be a Eurodollar
Borrowing or an ABR Borrowing; (ii) the date of such Borrowing (which shall be a
Business Day) and the amount thereof; and (iii) if such Borrowing is to be a
Eurodollar Borrowing, the Interest Period with respect thereto, which shall not
end after the Maturity Date. If no election as to the Type of Borrowing is
specified in any such notice, then the requested Borrowing shall be an ABR
Borrowing. If no Interest Period with respect to any Eurodollar Borrowing is
specified in any such notice, then the Borrower shall be deemed to have selected
an Interest Period of one month's duration. Notwithstanding any other provision
of this Agreement to the contrary, the Borrower shall not be entitled to request
any Borrowing if the Interest Period requested with respect to such Borrowing
would end after the Maturity Date. The Administrative Agent shall promptly
advise the Revolving Lenders of any notice given pursuant to this Section 2.03
and of each Lender's portion of the requested Borrowing.

                  SECTION 2.04 Conversion and Continuation of Loans. The
Borrower shall have the right at any time upon prior irrevocable notice to the
Administrative Agent (i) not later than 10:30 a.m., New York City time, on the
day of the conversion, to convert all or any part of any Eurodollar Borrowing
into an ABR Borrowing, (ii) not later than 10:30 a.m., New York City time, three
Business Days prior to conversion or continuation, to convert any ABR Borrowing
into a Eurodollar Borrowing or to continue any Eurodollar Borrowing as a
Eurodollar Borrowing for an additional Interest Period and (iii) not later than
10:30 a.m., New York City time, three Business Days prior to conversion, to
convert the Interest Period with respect to any Eurodollar Borrowing to another
permissible Interest Period, subject in each case to the following:

                  (a) if less than all the outstanding principal amount of any
Borrowing shall be converted or continued, the aggregate principal amount of the
Borrowing converted or continued shall be an integral multiple of $10,000,000
and not less than $20,000,000;

                  (b) accrued interest on a Borrowing (or portion thereof) being
converted shall be paid by the Borrower at the time of conversion;

                  (c) if any Eurodollar Borrowing is converted at a time other
than the end of the Interest Period applicable thereto, the Borrower shall pay,
upon demand, any amounts due to the Lenders pursuant to Section 2.14;

                  (d) any portion of a Borrowing maturing or required to be
repaid in less than one month may not be converted into or continued as a
Eurodollar Borrowing;
<PAGE>   22
                                                                              17


                  (e) any portion of a Eurodollar Borrowing which cannot be
continued as a Eurodollar Borrowing by reason of clause (d) above shall be
automatically converted at the end of the Interest Period in effect for such
Eurodollar Borrowing into an ABR Borrowing;

                  (f) no Interest Period may be selected for any Eurodollar
Borrowing that would end later than the Maturity Date; and

                  (g) at the request of the Required Lenders to the
Administrative Agent, no Borrowing shall be continued as or converted into a
Eurodollar Borrowing at any time when an Event of Default has occurred and is
continuing and, upon such request, each Eurodollar Borrowing shall be converted
into an ABR Borrowing at the end of the Interest Period applicable thereto.

                  Each notice of the Borrower pursuant to this Section 2.04
shall be irrevocable and shall refer to this Agreement and specify (i) the
identity and amount of the Borrowing that the Borrower requests to be converted
or continued, (ii) whether such Borrowing is to be converted to or continued as
a Eurodollar Borrowing or an ABR Borrowing, (iii) if such notice requests a
conversion, the date of such conversion (which shall be a Business Day) and (iv)
if such Borrowing is to be converted to or continued as a Eurodollar Borrowing,
the Interest Period with respect thereto. If no Interest Period is specified in
any such notice with respect to any conversion to or continuation as a
Eurodollar Borrowing, the Borrower shall be deemed to have selected an Interest
Period of one month's duration. If the Borrower shall not have given notice in
accordance with this Section 2.04 to convert or continue any Borrowing, such
Borrowing shall, at the end of the Interest Period applicable thereto (unless
repaid pursuant to the terms hereof), automatically be converted or continued
into a new Interest Period as an ABR Borrowing. It is understood that the
procedures described in this Section 2.04 apply to Term Loans as well as
Revolving Loans.

                  SECTION 2.05 Fees. (a)The Borrower agrees to pay to each
Revolving Lender, through the Administrative Agent, on each March 31, June 30,
September 30 and December 31 (with the first payment being due on the first of
such dates after the Assumption Effective Date) and on the date on which the
Revolving Commitment of such Lender shall be terminated as provided herein, a
facility fee (the "Facility Fee") equal to the Applicable Percentage per annum
in effect from time to time on the average daily amount of the Revolving
Commitment of such Lender, whether used or unused, during the preceding quarter
(or other period commencing on the Assumption Effective Date, or ending with the
Maturity Date or any date on which the Revolving Commitment of such Lender shall
be terminated). All Facility Fees shall be computed on the basis of the actual
number of days elapsed in a year of 365 or 366 days, as the case may be. The
Facility Fee due to each Lender shall commence to accrue on the Assumption
Effective Date, and shall cease to accrue on the earlier of the Maturity Date
and the termination of the Revolving Commitment of such Lender as provided
herein; provided, that the Borrower hereby agrees to pay, on the first payment
date after the Assumption Effective Date under this Section 2.05(a), any amounts
(including amounts in respect of Term Commitments) which had accrued and were
not paid under Section 2.05(a) of the Lucent Assumable Credit Agreement on the
Assumption Effective Date.

                  (b) The Facility Fee shall be paid on the dates due, in
immediately available funds, to the Administrative Agent for distribution, if
and as appropriate, among the Lenders. Once paid, none of the Facility Fees
shall be refundable under any circumstances.

                  SECTION 2.06 Repayment of Loans, Evidence of Debt. (a)The
Borrower hereby agrees that the outstanding principal balance of each Loan shall
be payable on the Maturity Date.
<PAGE>   23
                                                                              18


                  (b) Each Loan shall bear interest on the outstanding principal
balance thereof as set forth in Section 2.07.

                  (c) Each Lender shall maintain in accordance with its usual
practice an account or accounts evidencing the indebtedness of the Borrower to
the appropriate lending office of such Lender resulting from each Loan made by
such lending office of such Lender from time to time, including the amounts of
principal and interest payable and paid such lending office of such Lender from
time to time under this Agreement.

                  (d) The Administrative Agent shall maintain the Register
pursuant to Section 9.04(d), and a subaccount for each Lender, in which Register
and accounts (taken together) shall be recorded (i) the amount of each Loan made
hereunder, the Type of each Loan made and the Interest Period applicable
thereto, (ii) the amount of any principal or interest due and payable or to
become due and payable from the Borrower to each Lender hereunder and (iii) the
amount of any sum received by the Administrative Agent hereunder from the
Borrower and each Lender's share thereof.

                  (e) The entries made in the Register and accounts maintained
pursuant to paragraph (c) and (d) of this Section 2.06 shall, to the extent
permitted by applicable law, be prima facie evidence of the existence and
amounts of the obligations of the Borrower therein recorded; provided, however,
that the failure of any Lender or the Administrative Agent to maintain such
account, such Register or such subaccount, as applicable, or any error therein
shall not in any manner affect the obligation of the Borrower to repay the Loans
made to the Borrower by such Lender in accordance with their terms.

                  SECTION 2.07 Interest on Loans. (a)Subject to the provisions
of Section 2.08, the Loans comprising each Eurodollar Borrowing shall bear
interest (computed on the basis of the actual number of days elapsed over a year
of 360 days) at a rate per annum equal to the LIBO Rate for the Interest Period
in effect for such Borrowing plus the Applicable Percentage from time to time in
effect.

                  (b) Subject to the provisions of Section 2.08, the Loans
comprising each ABR Borrowing shall bear interest (computed on the basis of the
actual number of days elapsed over a year of 365 or 366 days, as the case may
be, for periods during which the Alternate Base Rate is determined by reference
to the Prime Rate and 360 days for periods during which the Alternate Base Rate
is determined by reference to the Federal Funds Effective Rate) at a rate per
annum equal to the Alternate Base Rate plus the Applicable Percentage from time
to time in effect.

                  (c) Interest on each Loan shall be payable on each Interest
Payment Date applicable to such Loan except as otherwise provided in this
Agreement. The Borrower hereby agrees to pay on the Interest Payment Date
applicable thereto, any amounts which had accrued and were not paid under
Section 2.07 of the Lucent Assumable Credit Agreement on the Assumption
Effective Date. The applicable LIBO Rate or Alternate Base Rate for each
Interest Period or day within an Interest Period, as the case may be, shall be
determined in good faith by the Administrative Agent, and such determination
shall be conclusive absent manifest error.

                  SECTION 2.08 Default Interest. If the Borrower shall default
in the payment of the principal of or interest on any Loan or any other amount
becoming due hereunder, whether by scheduled maturity, notice of prepayment,
acceleration or otherwise, the Borrower shall on demand from time to time from
the Administrative Agent pay interest, to the extent permitted by law, on such
defaulted amount up to (but not including) the date of actual payment (after as
well as before judgment) at a rate per annum (computed on the basis of the
actual number of days elapsed over a year of
<PAGE>   24
                                                                              19


360 days) equal to 2% above the rate otherwise applicable to ABR Revolving Loans
(in the case of principal and interest in respect of Revolving Loans) or ABR
Term Loans (otherwise).

                  SECTION 2.09 Alternate Rate of Interest. In the event, and on
each occasion, that on the day two Business Days prior to the commencement of
any Interest Period for a Eurodollar Borrowing the Administrative Agent shall
have determined in good faith (a) that dollar deposits in the principal amounts
of the Eurodollar Loans comprising such Borrowing are not generally available in
the London interbank market or (b) that reasonable means do not exist for
ascertaining the LIBO Rate, the Administrative Agent shall, as soon as
practicable thereafter, give telecopy notice of such determination to the
Borrower and the Lenders. In the event of any such determination under clauses
(a) or (b) above, until the Administrative Agent shall have advised the Borrower
and the Lenders that the circumstances giving rise to such notice no longer
exist, any request by the Borrower for a Eurodollar Borrowing shall be deemed to
be a request for an ABR Borrowing. In the event a Lender notifies the
Administrative Agent that the rates at which dollar deposits are being offered
will not adequately and fairly reflect the cost to such Lender of making or
maintaining its Eurodollar Loan during such Interest Period, the Administrative
Agent shall notify the Borrower of such notice and until the Lender shall have
advised the Administrative Agent that the circumstances giving rise to such
notice no longer exist, (i) such Eurodollar Loan will automatically, on the last
day of the then existing Interest Period therefore, convert into an ABR Loan,
(ii) any request by the Borrower for a Eurodollar Borrowing shall be deemed a
request for an ABR Borrowing for the same Interest Period with respect to such
Lender and (iii) the obligation of such Lender to make, or to convert, Loans
into Eurodollar Loans shall be suspended until the Administrative Agent shall
notify the Borrower that such Lender has determined that such circumstances no
longer exist. Each determination by the Administrative Agent hereunder shall be
in good faith and conclusive absent manifest error.

                  SECTION 2.10 Optional and Mandatory Termination and Reduction
of Commitments; Prepayments of Term Loans in Connection with Certain
Transactions. (a) The Revolving Commitments shall be automatically terminated on
the Maturity Date.

                  (b) Upon at least three Business Days' prior irrevocable
telecopy notice to the Administrative Agent, the Borrower may at any time in
whole permanently terminate, or from time to time in part permanently reduce,
the Total Revolving Commitment; provided, however, that each partial reduction
of the Total Revolving Commitment shall be in an integral multiple of
$10,000,000 and in a minimum principal amount of $20,000,000. Optional
reductions of Revolving Commitments pursuant to this Section 2.10(b) while the
Term Loans remain outstanding shall be accompanied by a prepayment of the Term
Loans to the extent required by Schedule 2.10.

                  (c) No later than the date that is three Business Days after
the receipt of any Net Cash Proceeds from any Capital Markets Event which occurs
after the Assumption Effective Date, the Total Exposure shall automatically be
permanently reduced by an amount equal to such Net Cash Proceeds; provided that
this paragraph (c) shall cease to apply once the Total Exposure has been reduced
to $1,500,000,000 or less (whether pursuant to this paragraph or any other
reduction or prepayment provision in this Agreement). Notwithstanding the
foregoing, so long as no Default or Event of Default is in existence, if the
amount of Net Cash Proceeds required to be applied as described above on a
particular date is less than $20,000,000, such application may, at the option of
the Borrower, be deferred until the next succeeding date on which the aggregate
amount of Net Cash Proceeds required to be applied as described above (including
any deferred amounts) equals at least $20,000,000. It is understood that the
concept of "automatic" reductions as applied to Total Exposure consisting of
Term Loans means that Term Loans in the amount so allocated shall become due and
payable on the date such reduction is required.
<PAGE>   25
                                                                              20


                  (d) In the case of any transaction described in Section
6.02(i), 6.02(j)(iii) or 6.08 that may be consummated only if the Total Exposure
is reduced as described therein, the amount of the reduction so required shall
be applied, within three Business Days of the consummation of the relevant
transaction, to so reduce the Total Exposure.

                  (e) Reductions in Total Exposure required by Section 2.10(c)
or (d) shall be allocated as provided in Schedule 2.10.

                  (f) Subject to Schedule 2.10, each reduction in the Total
Revolving Commitment hereunder shall be made ratably among the Lenders in
accordance with their respective Revolving Commitments. The Borrower shall pay
to the Administrative Agent for the account of the Lenders, on the date of each
termination or reduction of the Revolving Commitments, the Facility Fees on the
amount of the Revolving Commitments so terminated or reduced accrued through the
date of such termination or reduction.

                  SECTION 2.11 Optional and Mandatory Repayment. (a) The
Borrower shall have the right at any time and from time to time to prepay any
Borrowing, in whole or in part, upon giving telecopy notice (or telephone notice
promptly confirmed by telecopy notice) to the Administrative Agent: (i) before
10:00 a.m., New York City time, three Business Days prior to prepayment, in the
case of Eurodollar Loans and (ii) before 10:00 a.m., New York City time, one
Business Day prior to prepayment, in the case of ABR Loans; provided, however,
that each partial prepayment shall be in an amount which is an integral multiple
of $10,000,000 and not less than $20,000,000. Each notice of prepayment from the
Borrower shall specify the prepayment date and the principal amount of each
Borrowing (or portion thereof) to be prepaid, shall be irrevocable and shall
commit the Borrower to prepay such Borrowing (or portion thereof) by the amount
stated therein on the date stated therein. Each optional prepayment of the Term
Loans pursuant to this Section 2.11(a) shall be accompanied by a reduction of
the Revolving Commitments to the extent required by Schedule 2.10.

                  (b) The Borrower shall prepay the Term Loans to the extent
provided in Sections 2.10(c) and (d).

                  (c) On the date of any termination or reduction of the
Revolving Commitments pursuant to this Agreement, the Borrower shall pay or
prepay so much of the Borrowings as shall be necessary in order that the
aggregate principal amount of the Revolving Loans outstanding will not exceed
the Total Revolving Commitment, after giving effect to such termination or
reduction.

                  (d) All prepayments under this Section 2.11 shall be subject
to Section 2.14 but otherwise without premium or penalty. All prepayments under
this Section 2.11 shall be accompanied by accrued interest on the principal
amount being prepaid to the date of payment.

                  SECTION 2.12 Reserve Requirements, Change in Circumstances.
(a)Notwithstanding any other provision herein, if after the Original Closing
Date any change in applicable law or regulation or in the interpretation or
administration thereof by any governmental authority charged with the
interpretation or administration thereof (whether or not having the force of
law) shall result in the imposition, modification or applicability of any
reserve, special deposit or similar requirement against assets of, deposits with
or for the account of or credit extended by any Lender, or shall result in the
imposition on such Lender or the London interbank market any other condition
affecting this Agreement, such Lender's Commitment or any Eurodollar Loan made
by such Lender, and the result of any of the foregoing shall be to increase the
cost to such Lender of making or maintaining any Eurodollar Loan or to
<PAGE>   26
                                                                              21


reduce the amount of any sum received or receivable by such Lender hereunder
(whether of principal, interest or otherwise) by an amount deemed by such Lender
to be material, then the Borrower will pay to such Lender upon demand such
additional amount or amounts as will compensate such Lender for such additional
costs incurred or reduction suffered.

                  (b) If any Lender shall have determined that the applicability
of any law, rule, regulation or guideline adopted after the Original Closing
Date pursuant to or arising out of the July 1988 report of the Basle Committee
on Banking Regulations and Supervisory Practices entitled "International
Convergence of Capital Measurement and Capital Standards," or the adoption after
the Original Closing Date of any other law, rule, regulation or guideline
regarding capital adequacy, or any change in any of the foregoing or in the
interpretation or administration of any of the foregoing by any Governmental
Authority, central bank or comparable agency charged with the interpretation or
administration thereof, or compliance by any Lender (or any lending office of
such Lender) or any Lender's holding company with any request or directive
regarding capital adequacy (whether or not having the force of law) of any such
authority, central bank or comparable agency, has or would have the effect of
reducing the rate of return on such Lender's capital or on the capital of such
Lender's holding company, if any, as a consequence of this Agreement, such
Lender's Commitment or the Loans made by such Lender pursuant hereto to a level
below that which such Lender or such Lender's holding company could have
achieved but for such adoption, change or compliance (taking into consideration
such Lender's policies and the policies of such Lender's holding company with
respect to capital adequacy) by an amount deemed by such Lender to be material,
then from time to time the Borrower shall pay to such Lender such additional
amount or amounts as will compensate such Lender or such Lender's holding
company for any such reduction suffered. It is acknowledged that this Agreement
is being entered into by the Lenders on the understanding that the Lenders will
not be required to maintain capital against their Commitments under currently
applicable laws, regulations and regulatory guidelines.

                  (c) A certificate of the Lender setting forth such amount or
amounts (including computation of such amount or amounts) as shall be necessary
to compensate the Lender or its holding company as specified in paragraph (a) or
(b) above, as the case may be, shall be delivered to the Borrower and such
amount or amounts may be reviewed by the Borrower. Unless the Borrower disagrees
in good faith with the computation of the amount or amounts in such certificate,
the Borrower shall pay to the Lender, within 10 Business Days after receipt by
the Borrower of such certificate delivered by the Lender, the amount shown as
due on any such certificate. If the Borrower, after receipt of any such
certificate from the Lender, disagrees with the Lender on the computation of the
amount or amounts owed to the Lender pursuant to paragraph (a) or (b) above, the
Lender and the Borrower shall negotiate in good faith to promptly resolve such
disagreement. In either case, however, the Lender shall have a duty to mitigate
the damages that may arise as a consequence of paragraph (a) or (b) above to the
extent that such mitigation will not, in the judgment of the Lender, entail any
cost or disadvantage to the Lender that the Lender is not reimbursed or
compensated for by the Borrower.

                  (d) Failure on the part of any Lender to demand compensation
for any increased costs or reduction in amounts received or receivable or
reduction in return on capital with respect to any period shall not constitute a
waiver of such Lender's right to demand compensation with respect to any other
period; provided that if any Lender fails to make such demand within 45 days
after it obtains knowledge of the event giving rise to the demand such Lender
shall, with respect to amounts payable pursuant to this Section 2.12 resulting
from such event, only be entitled to payment under this Section 2.12 for such
costs incurred or reduction in amounts or return on capital from and after the
date 45 days prior to the date that such Lender does make such demand. The
protection of this Section shall be available to each Lender regardless of any
possible contention of the invalidity or inapplicability of the law, rule,
regulation, guideline or other change or condition which shall have occurred or
been imposed.
<PAGE>   27
                                                                              22


                  SECTION 2.13 Change in Legality. (a)Notwithstanding any other
provision herein, if any change in any law or regulation or in the
interpretation thereof by any Governmental Authority charged with the
administration or interpretation thereof shall make it unlawful for any Lender
to make or maintain any Eurodollar Loan or to give effect to its obligations as
contemplated hereby with respect to any Eurodollar Loan, then, by 30 days' (or
such shorter period as shall be required in order to comply with applicable law)
written notice to the Borrower and to the Administrative Agent, such Lender may:

                  (i) declare that Eurodollar Loans will not thereafter be made
         by such Lender hereunder, whereupon any request by the Borrower for a
         Eurodollar Borrowing shall, as to such Lender only, be deemed a request
         for an ABR Loan unless such declaration shall be subsequently
         withdrawn; and

                  (ii) require that all outstanding Eurodollar Loans made by it
         be converted to ABR Loans, in which event all such Eurodollar Loans
         shall be automatically converted to ABR Loans as of the effective date
         of such notice as provided in paragraph (b) below.

                  In the event any Lender shall exercise its rights under (i) or
(ii) above, all payments and prepayments of principal which would otherwise have
been applied to repay the Eurodollar Loans that would have been made by such
Lender or the converted Eurodollar Loans of such Lender shall instead be applied
to repay the ABR Loans made by such Lender in lieu of, or resulting from the
conversion of, such Eurodollar Loans.

                  (b) For purposes of this Section 2.13, a notice to the
Borrower by any Lender shall be effective as to each Eurodollar Loan, if lawful,
on the last day of the Interest Period currently applicable to such Eurodollar
Loan; in all other cases such notice shall be effective on the date of receipt
by the Borrower.

                  SECTION 2.14 Indemnity. The Borrower shall indemnify each
Lender against any out-of-pocket loss or expense which such Lender may sustain
or incur as a consequence of (a) any failure by the Borrower to borrow or to
refinance, convert or continue any Loan hereunder after irrevocable notice of
such borrowing, refinancing, conversion or continuation has been given pursuant
to Section 2.03 or 2.04, (b) any payment, prepayment or conversion, or an
assignment required under Section 2.19, of a Eurodollar Loan by the Borrower
required by any other provision of this Agreement or otherwise made or deemed
made on a date other than the last day of the Interest Period, if any,
applicable thereto, (c) any default by the Borrower in payment or prepayment of
the principal amount of any Loan or any part thereof or interest accrued
thereon, as and when due and payable (at the due date thereof, whether by
scheduled maturity, acceleration, irrevocable notice of prepayment or otherwise)
or (d) the occurrence of any Event of Default.

                  In the case of a Eurodollar Loan, such out-of-pocket loss or
expense shall be limited to an amount equal to the excess, if any, of (i) its
cost of obtaining the funds for the Loan being paid, prepaid, converted or not
borrowed, converted or continued (based on the LIBO Rate applicable thereto) for
the period from the date of such payment, prepayment conversion or failure to
borrow, convert or continue to the last day of the Interest Period for such Loan
(or, in the case of a failure to borrow, convert or continue, the Interest
Period for such Loan which would have commenced on the date of such failure)
over (ii) the amount of interest that would be realized by the Lender in
reemploying the funds so paid, prepaid, not borrowed, converted or continued for
such period or Interest Period, as the case may be. This Section shall not apply
to ABR Loans.
<PAGE>   28
                                                                              23


                  A certificate of the Lender setting forth such amount or
amounts (including the computation of such amount or amounts) as shall be
necessary to compensate the Lender or its holding company for the out-of-pocket
expenses defined herein shall be delivered to the Borrower and such amount or
amounts may be reviewed by the Borrower. If the Borrower, after receipt of any
such certificate from the Lender, disagrees in good faith with the Lender on the
computation of the amount or amounts owed to the Lender pursuant to this Section
2.14, the Lender and the Borrower shall negotiate in good faith to promptly
resolve such disagreement.

                  Each Lender shall have a duty to mitigate the damages to such
Lender that may arise as a consequence of clause (a), (b), (c) or (d) above to
the extent that such mitigation will not, in the judgment of such Lender, entail
any cost or disadvantage to such Lender that such Lender is not reimbursed or
compensated for by the Borrower.

                  SECTION 2.15 Pro Rata Treatment. Except as required under
Sections 2.09, 2.12, 2.13, 2.14, 2.18 and 2.19 or by Schedule 2.10, each
Borrowing, each payment or prepayment of principal of any Borrowing, each
payment of interest on the Loans, each payment of the Facility Fees, each
reduction of the Revolving Commitments and each refinancing or conversion of any
Borrowing with a Borrowing of any Type, shall be allocated pro rata among the
Lenders in accordance with their respective Revolving Commitments (or, if such
Revolving Commitments shall have expired or been terminated, in accordance with
the respective principal amounts of their outstanding Revolving Loans) or Term
Loans, as the case may be. Each Lender agrees that in computing such Lender's
portion of any Borrowing to be made hereunder, the Administrative Agent may, in
its discretion, round each Lender's percentage of such Borrowing to the next
higher or lower whole dollar amount.

                  SECTION 2.16 Sharing of Setoff. Each Lender agrees that if it
shall, through the exercise of a right of banker's lien, setoff or counterclaim
against the Borrower, or pursuant to a secured claim under Section 506 of Title
11 of the United States Code or other security or interest arising from, or in
lieu of, such secured claim, received by such Lender under any applicable
bankruptcy, insolvency or other similar law or otherwise, or by any other means
(excluding for the purpose of this Section 2.16, Section 2.09, Section 2.12,
Section 2.13, Section 2.14, Section 2.18 and Section 2.19), obtain payment
(voluntary or involuntary) in respect of any Loan or Loans as a result of which
the unpaid principal portion of the Loans of such Lender shall be
proportionately less than the unpaid principal portion of the Loans of any other
Lender, it shall be deemed simultaneously to have purchased from such other
Lender at face value, and shall promptly pay to such other Lender the purchase
price for, a participation in the Loans of such other Lender, so that the
aggregate unpaid principal amount of the Loans and participations in the Loans
held by each Lender shall be in the same proportion to the aggregate unpaid
principal amount of all Loans then outstanding as the principal amount of its
Loans prior to such exercise of banker's lien, setoff or counterclaim or other
event was to the principal amount of all Loans outstanding prior to such
exercise of banker's lien, setoff or counterclaim or other event; provided,
however, that, if any such purchase or purchases or adjustments shall be made
pursuant to this Section 2.16 and the payment giving rise thereto shall
thereafter be recovered, such purchase or purchases or adjustments shall be
rescinded to the extent of such recovery and the purchase price or prices or
adjustment restored without interest. The Borrower expressly consents to the
foregoing arrangements and agrees that any Lender holding a participation in a
Loan deemed to have been so purchased may exercise any and all rights of
banker's lien, setoff or counterclaim with respect to any and all moneys owing
by the Borrower to such Lender by reason thereof as fully as if such Lender had
made a Loan directly to the Borrower in the amount of such participation.

                  SECTION 2.17 Payments. (a)The Borrower shall make each payment
(including principal of or interest on any Borrowing or the Facility Fee or
other amounts) hereunder, without setoff or counterclaim, from an account in the
United States not later than 12:00 noon, New York
<PAGE>   29
                                                                              24


City time, on the date when due in dollars to the Administrative Agent at its
offices at 270 Park Avenue, New York, New York, in immediately available funds.

                  (b) Whenever any payment (including principal of or interest
on any Borrowing or the Facility Fee or other amounts) hereunder shall become
due, or otherwise would occur, on a day that is not a Business Day, such payment
may be made on the next succeeding Business Day, and such extension of time
shall in such case be included in the computation of interest or the Facility
Fee, if applicable.

                  SECTION 2.18 Taxes. (a)Any and all payments by the Borrower
hereunder shall be made, in accordance with Section 2.17, free and clear of and
without deduction for any and all present or future taxes, levies, imposts,
deductions, charges or withholdings, and all liabilities with respect thereto
imposed by the United States or any political subdivision or taxing authority
thereof, excluding taxes imposed on the Administrative Agent's or any Lender's
(or any transferee's or assignee's, including a participation holder's (any such
entity a "Transferee")) net income and franchise taxes imposed on the
Administrative Agent or any Lender (or Transferee) by the United States or any
political subdivision or taxing authority thereof (all such nonexcluded taxes,
levies, imposts, deductions, charges, withholdings and liabilities being
hereinafter referred to as "Taxes"). If the Borrower shall be required by law to
deduct any Taxes from or in respect of any sum payable hereunder to any Lender
(or any Transferee) or the Administrative Agent, (i) the sum payable shall be
increased by the amount necessary so that after making all required deductions
(including deductions applicable to additional sums payable under this Section
2.18) such Lender (or Transferee) or the Administrative Agent (as the case may
be) shall receive an amount equal to the sum it would have received had no such
deductions been made, (ii) the Borrower shall make such deductions and (iii) the
Borrower shall pay the full amount deducted to the relevant taxing authority or
other Governmental Authority in accordance with applicable law.

                  (b) In addition, the Borrower agrees to pay any present or
future stamp or documentary taxes or any other excise or property taxes, charges
or similar levies which arise from any payment made hereunder or from the
execution, delivery or registration of, or otherwise with respect to, this
Agreement imposed by the United States or any political subdivision or taxing
authority thereof (hereinafter referred to as "Other Taxes").

                  (c) The Borrower will indemnify each Lender (or Transferee)
and the Administrative Agent for the full amount of Taxes and Other Taxes
(including any Taxes or Other Taxes on amounts payable under this Section 2.18)
paid by such Lender (or Transferee) or the Administrative Agent, as the case may
be, with respect to the Borrower and any liability (including penalties,
interest and reasonable out-of-pocket expenses) arising therefrom or with
respect thereto (other than any such liability that results from the gross
negligence or willful misconduct of the Lender (or Transferee) or Agent),
whether or not such Taxes or Other Taxes were correctly or legally asserted by
the relevant taxing authority or other Governmental Authority. Such
indemnification shall be made within 30 days after the date any Lender (or
Transferee) or the Administrative Agent, as the case may be, makes written
demand therefor. If the Borrower or any Lender (or Transferee) or the
Administrative Agent shall determine that Taxes or Other Taxes may not have been
correctly or legally assessed by the relevant taxing authority or other
Governmental Authority, and that a Lender (or Transferee) or the Administrative
Agent may be entitled to receive a refund in respect of Taxes or Other Taxes, it
shall promptly notify the other party of the availability of such refund and
such Lender (or Transferee) or the Administrative Agent shall, within 30 days
after receipt of a request by the Borrower, apply for such refund at the
Borrower's expense. If any Lender (or Transferee) or the Administrative Agent
receives a refund or credit or offset against another tax liability in respect
of any Taxes or Other Taxes for which such Lender (or Transferee) or the
Administrative Agent has received payment from the Borrower hereunder it shall
promptly repay such refund or credit or offset against another tax liability
(including any interest received by such Lender (or
<PAGE>   30
                                                                              25


Transferee) or the Administrative Agent from the taxing authority with respect
to the refund with respect to such Taxes or Other Taxes) to the Borrower, net of
all out-of-pocket expenses of such Lender; provided that the Borrower, upon the
request of such Lender (or Transferee) or the Administrative Agent, agrees to
return such refund or credit or offset against another tax liability (plus
penalties, interest or other charges) to such Lender (or Transferee) or the
Administrative Agent in the event such Lender (or Transferee) or the
Administrative Agent is required to repay such refund or credit or offset
against another tax liability. For purposes of the preceding sentence, the
Administrative Agent or any Lender shall determine in good faith and in its
discretion the amount of any credit or offset against another tax liability and
shall be under no obligation to make available to the Borrower any of its tax
returns or any other information that it deems to be confidential.

                  (d) As soon as practicable after the date of any payment of
Taxes or Other Taxes withheld by the Borrower in respect of any payment to any
Lender (or Transferee) or the Administrative Agent, the Borrower will furnish to
the Administrative Agent, at its address referred to in Section 9.01, the
original or a certified copy of a receipt evidencing payment thereof.

                  (e) Without prejudice to the survival of any other agreement
contained herein, the agreements and obligations contained in Section 2.12, 2.14
and this Section 2.18 shall survive the payment in full of the principal of and
interest on all Loans made hereunder.

                  (f) Each Lender (or Transferee) which is organized outside the
United States shall, prior to the due date of the first payment by the Borrower
to such Lender (or Transferee) hereunder, deliver to the Borrower such
certificates, documents or other evidence, as required by the Code or Treasury
Regulations issued pursuant thereto, including Internal Revenue Service Form
8-BEN or Form 8-ECI and any other certificate or statement of exemption required
by Treasury Regulation Section 1.1441-1(a) or Section 1.1441-6(c) or any
subsequent version thereof, properly completed and duly executed by such Lender
(or Transferee) establishing that such payment is (i) not subject to withholding
under the Code because such payment is effectively connected with the conduct by
such Lender (or Transferee) of a trade or business in the United States or (ii)
totally exempt from United States tax under a provision of an applicable tax
treaty. Each such Lender (or Transferee) that changes its funding office shall
promptly notify the Borrower of such change and, upon written request from the
Borrower, shall deliver any new certificates, documents or other evidence
required pursuant to the preceding sentence prior to the immediately following
due date of any payment by the Borrower hereunder. Unless the Borrower and the
Administrative Agent have received forms or other documents satisfactory to them
indicating that payments hereunder are not subject to United States withholding
tax, notwithstanding paragraph (a), the Borrower or the Administrative Agent
shall withhold taxes from such payments at the applicable statutory rate in the
case of payments to or for any Lender (or Transferee) organized under the laws
of a jurisdiction outside the United States.

                  (g) The Borrower shall not be required to pay any additional
amounts to any Lender (or Transferee) in respect of Taxes and Other Taxes
pursuant to paragraphs (a), (b) and (c) above if the obligation to pay such
additional amounts would not have arisen but for a failure by such Lender (or
Transferee) to comply with the provisions of paragraph (f) above unless such
Lender (or Transferee) is unable to comply with paragraph (f) because of (i) a
change in applicable law, regulation or official interpretation thereof or (ii)
an amendment, modification or revocation of any applicable tax treaty or a
change in official position regarding the application or interpretation thereof,
in each case after the Original Closing Date (and, in the case of a Transferee,
after the date of assignment or transfer).

                  (h) Any Lender (or Transferee) claiming any additional amounts
payable under this Section 2.18 shall (i) to the extent legally able to do so,
upon written request from the Borrower, file any certificate or document if such
filing would avoid the need for or reduce the amount of any such
<PAGE>   31
                                                                              26


additional amounts which may thereafter accrue, and the Borrower shall not be
obligated to pay such additional amounts if, after the Borrower's request, any
Lender (or Transferee) could have filed such certificate or document and failed
to do so; or (ii) consistent with legal and regulatory restrictions, use
reasonable efforts to change the jurisdiction of its applicable lending office
if the making of such change would avoid the need for or reduce the amount of
any additional amounts which may thereafter accrue and would not, in the sole
determination of such Lender (or Transferee), be otherwise disadvantageous to
such Lender (or Transferee).

                  SECTION 2.19 Mandatory Assignment; Commitment Termination. In
the event any Lender delivers to the Administrative Agent or the Borrower, as
appropriate, a certificate in accordance with Section 2.12(c) or a notice in
accordance with Section 2.09 or 2.13, or the Borrower is required to pay any
additional amounts or other payments in accordance with Section 2.18, the
Borrower may, at its own expense, and in its sole discretion require such Lender
to transfer and assign in whole or in part, without recourse (in accordance with
Section 9.04), all or part of its interests, rights and obligations under this
Agreement to an assignee which shall assume such assigned obligations (which
assignee may be another Lender, if a Lender accepts such assignment);provided
that (a) such assignment shall not conflict with any law, rule or regulation or
order of any court or other Governmental Authority and (b) the Borrower or such
assignee shall have paid to the assigning Lender in immediately available funds
the principal of and interest accrued to the date of such payment on the Loans
made by it hereunder and all other amounts owed to it hereunder.

                                  ARTICLE III

                         Representations and Warranties

                  The Borrower represents and warrants to each of the Lenders
that:

                  SECTION 3.01 Organization; Powers. The Borrower and each of
its Material Domestic Subsidiaries (a) is duly organized, validly existing and
in good standing under the laws of the jurisdiction of its organization, (b) has
all requisite power and authority to own its property and assets and to carry on
its business as now conducted and as proposed to be conducted, (c) is qualified
to do business in every jurisdiction where such qualification is required,
except where the failure so to qualify would not result in a Material Adverse
Effect, and (d) has the corporate power and authority to execute, deliver and
perform its obligations under each Loan Document to which it is a party and, in
the case of the Borrower, to borrow funds hereunder.

                  SECTION 3.02 Authorization. The execution, delivery and
performance by each Loan Party of the Loan Documents to which it is a party and
the Borrowings of the Borrower hereunder (collectively, the "Transactions") (a)
have been duly authorized by all requisite corporate actions and (b) will not
(i) violate (A) any provision of any Requirement of Law (including, without
limitation, the Margin Regulations) or of the certificate of incorporation or
other constitutive documents or by-laws of the Borrower or any of its
Subsidiaries (B) any order of any Governmental Authority or (C) any material
Contractual Obligation to which the Borrower or any of its Subsidiaries is a
party or by which the Borrower, any of its Subsidiaries or any of their property
is or may be bound, (ii) be in conflict with, result in a breach of or
constitute (alone or with notice or lapse of time or both) a default under any
such material Contractual Obligation or (iii) result in the creation or
imposition of any lien upon any property or assets of the Borrower or any of its
Subsidiaries.

                  SECTION 3.03 Enforceability. Each Loan Document has been duly
executed and delivered by each Loan Party party thereto and constitutes a valid
and legally binding obligation of each such Loan Party enforceable against each
such Loan Party in accordance with its terms.
<PAGE>   32
                                                                              27


                  SECTION 3.04 Governmental Approvals. No action, consent or
approval of, registration or filing with or any other action by any Governmental
Authority is or will be required in connection with the Transactions.

                  SECTION 3.05 Financial Statements. (a)The Borrower has
heretofore furnished to the Administrative Agent and the Lenders copies of its
consolidated financial statements as of and for the fiscal year ended September
30, 2000, as included in the Borrower's Registration Statement on Form S-1/A
filed on February 6, 2001. Such financial statements present fairly, in all
material respects, the consolidated financial condition and the results of
operations of the Borrower as of such date in accordance with GAAP. Neither the
Borrower nor any of its Subsidiaries has 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 would be required to be reflected in the most recent financial
statements referred to in this paragraph and are not so reflected.

                  (b) Since September 30, 2000, there has been no material
adverse change in the business, assets, operations or condition, financial or
otherwise, of the Borrower and its Subsidiaries, taken as a whole, except as
described in the Confidential Information Memorandum or in the Borrower's
Registration Statement on Form S-1/A filed on February 6, 2001. It is understood
that (i) failure to consummate the Agere Distribution shall not, in and of
itself, constitute such a material adverse change and (ii) a change in the
Borrower Debt Ratings or other credit ratings by any rating agency shall not, in
and of itself, constitute such a material adverse change.

                  SECTION 3.06 Properties. (a)Each of the Borrower and its
Subsidiaries has good title to, or valid leasehold interests in, all its real
and personal property material to the business of the Borrower and its
Subsidiaries, except for minor defects in title that do not interfere with its
ability to conduct its business as currently conducted or to utilize such
properties for their intended purposes.

                  (b) Each of the Borrower and its Subsidiaries owns, or is
licensed to use, all trademarks, tradenames, copyrights, patents and other
intellectual property material to the business of the Borrower and its
Subsidiaries, and the use thereof by the Borrower and its Subsidiaries does not
infringe upon the rights of any other Person, except for any such infringements
that, individually or in the aggregate, could not reasonably be expected to
result in a Material Adverse Effect.

                  SECTION 3.07 Litigation and Environmental Matters. (a)There
are no actions, suits or proceedings by or before any arbitrator or Governmental
Authority pending against or, to the knowledge of the Borrower, threatened
against or affecting the Borrower or any of its Subsidiaries (i) as to which
there is a reasonable possibility of an adverse determination and that, if
adversely determined, could reasonably be expected, individually or in the
aggregate, to result in a Material Adverse Effect (except as disclosed in the
financial statements referred to in Section 3.05(a)) or (ii) that involve any
Loan Document or the Transactions.

                  (b) Except as, individually or in the aggregate, could not
reasonably be expected to result in a Material Adverse Effect, neither the
Borrower nor any of its Subsidiaries (i) has failed to comply with any
Environmental Law or to obtain, maintain or comply with any permit, license or
other approval required under any Environmental Law, (ii) has become subject to
any Environmental Liability, (iii) has received notice of any claim with respect
to any Environmental Liability or (iv) knows of any basis for any Environmental
Liability.

                  SECTION 3.08 Compliance with Laws and Agreements. Each of the
Borrower and its Subsidiaries is in compliance with all laws, regulations and
orders of any Governmental
<PAGE>   33
                                                                              28


Authority applicable to it or its property and all indentures, agreements and
other instruments binding upon it or its property, except where the failure to
do so, individually or in the aggregate, could not reasonably be expected to
result in a Material Adverse Effect. No Default has occurred and is continuing.

                  SECTION 3.09 Federal Reserve Regulations. (a)Neither the
Borrower nor any of its Subsidiaries is engaged principally, or as one of its
important activities, in the business of extending credit for the purpose of
purchasing or carrying Margin Stock.

                  (b) No part of the proceeds of any Loan will be used, whether
directly or indirectly, and whether immediately, incidentally or ultimately, for
any purpose which entails a violation of, or which is inconsistent with, the
provisions of the Margin Regulations.

                  SECTION 3.10 Investment Company Act; Public Utility Holding
Company Act. Neither the Borrower nor any of its Subsidiaries is (a) an
"investment company" as defined in, or subject to regulation under, the
Investment Company Act of 1940 or (b) a "holding company" as defined in, or
subject to regulation under, the Public Utility Holding Company Act of 1935.

                  SECTION 3.11 Taxes. Each of the Borrower and its Subsidiaries
has timely filed or caused to be filed all Tax returns and reports required to
have been filed and has paid or caused to be paid all Taxes required to have
been paid by it, except (a) any Taxes that are being contested in good faith by
appropriate proceedings and for which the Borrower or such Subsidiary, as
applicable, has set aside on its books adequate reserves or (b) to the extent
that the failure to do so could not reasonably be expected to result in a
Material Adverse Effect.

                  SECTION 3.12 ERISA. No ERISA Event has occurred or is
reasonably expected to occur that, when taken together with all other such ERISA
Events for which liability is reasonably expected to occur, could reasonably be
expected to result in a Material Adverse Effect. The present value of all
accumulated benefit obligations under each Plan (based on the assumptions used
for purposes of Statement of Financial Accounting Standards No. 87) did not, as
of the date of the most recent financial statements reflecting such amounts,
exceed the fair market value of the assets of such Plan.

                  SECTION 3.13 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 the Borrower or any of its Subsidiaries
pending or, to the knowledge of the Borrower, threatened; (b) hours worked by
and payment made to employees of the Borrower or any of 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
either the Borrower 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 the
Borrower or the relevant Subsidiary.

                  SECTION 3.14 Subsidiaries. As of the Original Closing Date,
(a) Schedule 3.14 sets forth the name and jurisdiction of incorporation of each
Material Subsidiary and, as to each such Subsidiary, the percentage of each
class of Capital Stock directly 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 or rights granted to employees,
directors or consultants and directors' qualifying shares) of any nature
relating to any Capital Stock of any Material Subsidiary.

                  SECTION 3.15 Use of Proceeds. All proceeds of the Loans shall
be used for capital expenditures, refunding of debt, support for commercial
paper and general corporate purposes of the Borrower and its Subsidiaries,
including working capital.
<PAGE>   34
                                                                              29


                  SECTION 3.16 No Material Misstatements. No report, financial
statement or other written information furnished by or on behalf of the Borrower
to the Administrative Agent or any Lender pursuant to the Confidential
Information Memorandum or Section 3.05 or 5.02 hereof contains as of the
Original Closing Date in the case of the Confidential Information Memorandum and
Section 3.05, or will contain as of the date furnished in the case of Section
5.02, any material misstatement of fact or omits or will omit to state any
material fact necessary to make the statements therein, in the light of the
circumstances under which they were or will be made (in the case of Section
5.02(f), when taken as a whole and in conjunction with the Borrower's and
Lucent's public filings and disclosures), not misleading; provided, that the
projections and pro forma financial information contained in the materials
referenced above are based upon good faith estimates and assumptions believed by
management of the Borrower 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.

                                   ARTICLE IV

             Conditions of Lending; Covenants Relating to Assumption

                  The obligations of the Lenders to make Loans hereunder are
subject to the satisfaction of the following conditions:

                  SECTION 4.01 All Borrowings. On the date of each Borrowing:

                  (a) The Administrative Agent shall have received a notice of
such Borrowing as required by Section 2.03.

                  (b) The representations and warranties set forth in Article
III hereof (other than, in the case of any Borrowing exclusively utilized to
repay maturing commercial paper of the Borrower (or, if on the Assumption
Effective Date the Borrower shall have commercial paper ratings of at least A-2
by S&P and P-2 by Moody's, in the case of all Borrowings), Sections 3.05(b) and
3.07) shall be true and correct in all material respects on and as of the date
of such Borrowing with the same effect as though made on and as of such date,
except to the extent such representations and warranties expressly relate to an
earlier date.

                  (c) The Borrower shall be in compliance with all the terms and
provisions set forth in the Loan Documents in all material respects, and at the
time of and immediately after such Borrowing no Event of Default or Default
shall have occurred and be continuing.

                  (d) Each Borrowing shall be deemed to constitute a
representation and warranty by the Borrower on the date of such Borrowing as to
the matters specified in paragraphs (b) and (c) of this Section 4.01.

                  SECTION 4.02 Initial Conditions. On or prior to the Original
Closing Date:

                  (a) Lucent Assumable Credit Agreement. The conditions set
forth in Section 4.02 of the Lucent Assumable Credit Agreement shall have been
satisfied.
<PAGE>   35
                                                                              30


                  (b) Credit Agreement. The Administrative Agent shall have
received this Agreement, executed and delivered by the Administrative Agent,
Lucent, the Borrower and each Person listed on Schedule 1.01.

                  (c) Approvals. All governmental and third party approvals
necessary in connection with the Transactions shall have been obtained and be in
full force and effect.

                  (d) 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 Original Closing Date.

                  (e) Closing Certificate. The Administrative Agent shall have
received a certificate of the Borrower, dated the Original Closing Date,
substantially in the form of Exhibit C, with appropriate insertions and
attachments.

                  (f) Legal Opinion. The Administrative Agent shall have
received the following executed legal opinions dated the Original Closing Date:

                  (i) the legal opinion of Cravath, Swaine & Moore, counsel to
         the Borrower, substantially in the form of Exhibit D-1; and

                  (ii) the legal opinion of the Vice President-Law of the
         Borrower, substantially in the form of Exhibit D-2.

                  Each such legal opinion shall cover such other matters
incident to the Transactions as the Administrative Agent may reasonably require.

                  SECTION 4.03 Covenants Relating to Assumption. The Borrower
agrees that, on or prior to the Assumption Effective Date:

                  (a) Guarantee and Collateral Agreement. The Administrative
Agent shall receive the Guarantee and Collateral Agreement, executed and
delivered by each Subsidiary Guarantor.

                  (b) Security Documents. The Administrative Agent shall receive
the Security Documents, executed and delivered by each relevant Loan Party and
any actions required to be taken pursuant to such Security Documents on or prior
to the Assumption Effective Date shall be taken.

                  (c) Closing Certificate. The Administrative Agent shall
receive a certificate of each Subsidiary Guarantor substantially in the form of
Exhibit C, with appropriate insertions and attachments.

                  (d) Legal Opinion. The Administrative Agent shall receive
executed legal opinions of Cravath, Swaine & Moore and an in-house counsel of
the Borrower. Each legal opinion shall cover such matters relating to the
Borrower and the Subsidiary Guarantors, as applicable, and the applicable
documents described in this Section 4.03 as the Administrative Agent may
reasonably require.
<PAGE>   36
                                                                              31


                                   ARTICLE V

                              Affirmative Covenants

                  The Borrower covenants and agrees with each Lender and the
Administrative Agent that so long as this Agreement shall remain in effect or
the principal of or interest on any Loan, the Facility Fee or any other expenses
or amounts payable hereunder shall be unpaid, unless the Required Lenders shall
otherwise consent in writing:

                  SECTION 5.01 Existence. The Borrower and each of its Material
Domestic Subsidiaries will do or cause to be done all things necessary to
preserve, renew and keep in full force and effect its legal existence, except as
otherwise expressly permitted under Section 6.04 or, in the case of
Subsidiaries, to the extent necessary to facilitate intercompany reorganizations
that do not materially adversely affect the interests of the Lenders.

                  SECTION 5.02 Financial Statements, Reports, etc. The Borrower
will furnish to the Administrative Agent and each Lender:

                  (a) within 105 days after the end of each fiscal year, its
consolidated balance sheets and the related statements of income and cash flows,
showing its consolidated financial condition as of the close of such fiscal year
and the consolidated results of its operations during such year, all audited by
PricewaterhouseCoopers LLC or other independent auditors of recognized national
standing and accompanied by an opinion of such auditors to the effect that such
consolidated financial statements fairly present its financial condition and
results of operations on a consolidated basis in accordance with GAAP
consistently applied, except as noted therein;

                  (b) within 60 days after the end of each of the first three
fiscal quarters of each fiscal year, its consolidated balance sheets and related
statements of income and cash flows, showing its consolidated financial
condition as of the close of such fiscal quarter and the consolidated results of
its operations during such fiscal quarter and the then elapsed portion of such
fiscal year, all certified by one of its Financial Officers as fairly presenting
its financial condition and results of operations on a consolidated basis in
accordance with GAAP consistently applied, subject to normal recurring accruals,
except as noted therein;

                  (c) concurrently with any delivery of financial statements
under paragraph (a) or (b) above, a certificate of a Financial Officer
certifying that no Event of Default or Default has occurred (including pursuant
to the financial covenants contained in Section 6.01, as demonstrated in
reasonable detail) or, if such an Event of Default or Default has occurred,
specifying the nature and extent thereof and any corrective action taken or
proposed to be taken with respect thereto;

                  (d) promptly after the same become publicly available, copies
of all reports filed by it with the SEC (other than reports on Form 8-K which
are filed solely for the purpose of filing exhibits), or any Governmental
Authority succeeding to any of or all the functions of the SEC, or distributed
to its shareholders, as the case may be;

                  (e) as soon as available, and in any event no later than 30
days after the end of each fiscal quarter ending after the Assumption Effective
Date, a list of the Material Subsidiaries in existence on the last Business Day
of such quarter; and

                  (f) promptly following any request therefor, such other
information regarding the operations, business affairs and financial condition
of the Borrower or any Subsidiary, or compliance with
<PAGE>   37
                                                                              32


the terms of this Agreement, as the Administrative Agent or any Lender (through
the Administrative Agent) may reasonably request.

Reports and financial statements required to be delivered pursuant to paragraphs
(a), (b) and (d) of this Section 5.02 shall be deemed to have been delivered on
the date on which the Borrower posts such reports, or reports containing such
financial statements, on the Borrower's website on the Internet at www.agere.com
or when such reports, or reports containing such financial statements, are
posted on the SEC's website at www.sec.gov; provided that the Borrower shall
deliver paper copies of the reports and financial statements referred to in
paragraphs (a), (b) and (d) of this Section 5.02 to the Administrative Agent or
any Lender who requests the Borrower to deliver such paper copies until written
notice to cease delivering paper copies is given by the Administrative Agent or
such Lender.

                  SECTION 5.03 Maintaining Records. The Borrower will record,
summarize and report all financial information in accordance with GAAP.

                  SECTION 5.04 Notices of Material Events. The Borrower will
furnish to the Administrative Agent and each Lender prompt written notice of the
following:

                  (a) the occurrence of any Default;

                  (b) any change in any Borrower Debt Rating;

                  (c) the filing or commencement of any action, suit or
proceeding by or before any arbitrator or Governmental Authority against or
affecting the Borrower or any Affiliate thereof that has a reasonable
possibility of being adversely determined and, if adversely determined, could
reasonably be expected to result in a Material Adverse Effect;

                  (d) the occurrence of any ERISA Event that, alone or together
with any other ERISA Events that have occurred, could reasonably be expected to
result in liability of the Borrower and its Subsidiaries in an aggregate amount
exceeding $100,000,000; and

                  (e) any other development that results in, or could reasonably
be expected to result in, a Material Adverse Effect. Each notice delivered under
this Section (other than clause (b) above) shall be accompanied by a statement
of a Financial Officer or other executive officer of the Borrower setting forth
the details of the event or development requiring such notice and any action
taken or proposed to be taken with respect thereto.

                  SECTION 5.05 Existence; Conduct of Business. The Borrower
will, and will cause each of its Material Domestic Subsidiaries to, do or cause
to be done all things necessary to preserve, renew and keep in full force and
effect its legal existence and the rights, licenses, permits, privileges and
franchises material to the conduct of its business; provided that the foregoing
shall not prohibit any merger, consolidation, liquidation or dissolution
expressly permitted under Section 6.04 or, in the case of Subsidiaries,
undertaken in connection with Investments structured as mergers or
consolidations or to facilitate intercompany reorganizations that do not
materially adversely affect the interests of the Lenders.

                  SECTION 5.06 Payment of Obligations. The Borrower will, and
will cause each of its Subsidiaries to, pay its obligations, including Tax
liabilities, that if not paid, could result in a Material Adverse Effect before
the same shall become delinquent or in default, except where (a) the
<PAGE>   38
                                                                              33


validity or amount thereof is being contested in good faith by appropriate
proceedings, (b) the Borrower or such Subsidiary has set aside on its books
adequate reserves with respect thereto in accordance with GAAP and (c) the
failure to make payment pending such contest could not reasonably be expected to
result in a Material Adverse Effect.

                  SECTION 5.07 Maintenance of Properties; Insurance. The
Borrower will, and will cause each of its Material Subsidiaries to, (a) keep and
maintain all property material to the conduct of the business of the Borrower
and its Subsidiaries in good working order and condition, ordinary wear and tear
excepted, and (b) maintain, with financially sound and reputable insurance
companies, insurance in such amounts and against such risks as are customarily
maintained by companies engaged in the same or similar businesses operating in
the same or similar locations.

                  SECTION 5.08 Inspection Rights. The Borrower will, and will
cause each of its Subsidiaries to, permit any representatives designated by the
Administrative Agent or any Lender, upon reasonable prior notice, to visit and
inspect its properties, to examine and make extracts from its books and records,
and to discuss its affairs, finances and condition with its officers and (after
reasonable prior notice to the Borrower and subject to the Borrower's right to
participate in such discussions) independent accountants, all at such reasonable
times and as often as reasonably requested.

                  SECTION 5.09 Compliance. The Borrower will, and will cause
each of its Subsidiaries to, comply with all Requirements of Law (including
Environmental Laws) and Contractual Obligations applicable to it or its
property, except where the failure to do so, individually or in the aggregate,
could not reasonably be expected to result in a Material Adverse Effect.

                  SECTION 5.10 Use of Proceeds. The Borrower will use the
proceeds of the Loans only for the purposes set forth in Section 3.15.

                  SECTION 5.11 Additional Subsidiary Guarantors. With respect to
any Subsidiary that becomes a Wholly Owned Domestic Material Subsidiary after
the date the Guarantee and Collateral Agreement is entered into, cause such new
Subsidiary (a) to become a party to the Guarantee and Collateral Agreement and
(b) to deliver to the Administrative Agent a certificate of such Subsidiary,
substantially in the form of Exhibit C, with appropriate insertions and
attachments.

                                   ARTICLE VI

                               Negative Covenants

                  The Borrower covenants and agrees with each Lender and the
Administrative Agent that so long as this Agreement shall remain in effect or
the principal of or interest on any Loan, the Facility Fee or any other expenses
or amounts payable hereunder shall be unpaid, unless the Required Lenders shall
otherwise consent in writing:

                  SECTION 6.01 Financial Covenants

                  (a) Consolidated Leverage Ratio. The Borrower shall not permit
the Consolidated Leverage Ratio as at the last day of any period of four
consecutive fiscal quarters of the Borrower ending on or after the Assumption
Effective Date to exceed 2.0 to 1.0.

                  (b) Consolidated Interest Coverage Ratio. The Borrower shall
not permit the Consolidated Interest Coverage Ratio for any period of four
consecutive fiscal quarters of the Borrower ending on or after the Assumption
Effective Date to be less than 3.5 to 1.0; provided, that for any
<PAGE>   39
                                                                              34


calculation pursuant to this paragraph (b) with respect to any period commencing
prior to the Assumption Effective Date, Consolidated Interest Expense shall be
calculated (i) on a pro forma basis with respect to any Indebtedness of Lucent
or any of its Subsidiaries assumed by the Borrower or any of its Subsidiaries as
if such Indebtedness were assumed on the first day of such period and (ii) under
the assumption that any Net Cash Proceeds received by the Borrower in connection
with the Agere IPO had been received on the first day of such period.

                  SECTION 6.02 Subsidiary Indebtedness. The Borrower will not
permit any Subsidiary (other than any Excluded Subsidiary) to create, incur,
assume or permit to exist any Indebtedness, except:

                  (a) Indebtedness existing on the Original Closing Date and set
forth in Schedule 6.02 and extensions, renewals and replacements of any such
Indebtedness that are consummated within one year of the final maturity thereof
(whether before or after such final maturity) and that do not increase the
outstanding principal amount thereof,

                  (b) Indebtedness created under the Guarantee and Collateral
Agreement;

                  (c) (i) Indebtedness of any Subsidiary to the Borrower or any
other Subsidiary and (ii) Guarantees by any Subsidiary of Indebtedness of the
Borrower or any other Subsidiary;

                  (d) Indebtedness of any Subsidiary incurred to finance the
acquisition, construction or improvement of any fixed or capital assets,
including Capital Lease Obligations, Indebtedness in respect of synthetic leases
and any Indebtedness assumed in connection with the acquisition of any such
assets or secured by a Lien on any such assets prior to the acquisition thereof,
and extensions, renewals and replacements of any such Indebtedness that do not
increase the outstanding principal amount thereof; provided that such
Indebtedness is incurred prior to or within 90 days after such acquisition or
the completion of such construction or improvement;

                  (e) Indebtedness of any Person that becomes a Subsidiary after
the Original Closing Date, provided that such Indebtedness exists at the time
such Person becomes a Subsidiary and is not created in contemplation of or in
connection with such Person becoming a Subsidiary and extensions, renewals and
replacements of any such Indebtedness that are incurred by such Subsidiary, that
are consummated within one year of the final maturity thereof (whether before or
after such final maturity) and that do not increase the outstanding principal
amount thereof;

                  (f) Attributable Debt and Indebtedness pursuant to CMO
Transactions permitted by Section 6.08;

                  (g) Indebtedness of any Subsidiary as an account party in
respect of trade letters of credit;

                  (h) Obligations under take or pay or minimum purchase
contracts to the extent constituting Guarantees of Indebtedness of the
counterparty thereto;

                  (i) Indebtedness incurred pursuant to any Capital Markets
Event consummated after the Guarantee and Collateral Agreement is entered into
so long as the Total Exposure is reduced by an amount equal to the Net Cash
Proceeds thereof within 3 Business Days of receipt of such Net Cash Proceeds;
<PAGE>   40
                                                                              35


                  (j) (i) Indebtedness incurred pursuant to working capital
facilities entered into by Foreign Subsidiaries of the Borrower, (ii)
Indebtedness of Foreign Subsidiaries other than pursuant to working capital
facilities in an aggregate principal amount not to exceed $100,000,000 at any
time outstanding and (iii) other Indebtedness of Foreign Subsidiaries so long as
the Total Exposure is reduced by an amount equal to the Net Cash Proceeds
thereof within 3 Business Days of receipt of such Net Cash Proceeds; and

                  (k) Guarantees of loans and advances to officers and employees
of the Borrower and its Subsidiaries in the ordinary course of business;

                  (l) Indebtedness incurred pursuant to any receivables
securitization; and

                  (m) other Indebtedness incurred after the Original Closing
Date in an aggregate principal amount not exceeding $50,000,000 at any time
outstanding

                  SECTION 6.03 Liens. The Borrower will not, and will not permit
any Domestic Subsidiary (other than any Excluded Subsidiary) to, create, incur,
assume or permit to exist any Lien on any property or asset now owned or
hereafter acquired by it, or assign or sell any income or revenues (including
accounts receivable) or rights in respect of any thereof, except:

                  (a) Permitted Encumbrances;

                  (b) any judgment Lien in respect of a judgment for the payment
of money; provided that at no time shall the aggregate liability in respect of
all outstanding judgment Liens that have been outstanding for more than 60
consecutive days exceed $100,000,000;

                  (c) any Lien on any property or asset of the Borrower or any
Subsidiary existing on the Original Closing Date and (in the case of any such
Liens on any property owned by a Loan Party as of the Original Closing Date) set
forth in Schedule 6.03; provided that (i) such Lien shall not apply to any other
property or asset of the Borrower or any Subsidiary and (ii) such Lien shall
secure only those obligations which it secures on the Original Closing Date and
extensions, renewals and replacements thereof that do not increase the
outstanding principal amount thereof;

                  (d) any Lien existing on any property or asset prior to the
acquisition thereof by the Borrower or any Subsidiary or existing on any
property or asset of any Person that becomes a Subsidiary after the Original
Closing Date prior to the time such Person becomes a Subsidiary; provided that
(i) such Lien is not created in contemplation of or in connection with such
acquisition or such Person becoming a Subsidiary, as the case may be, (ii) such
Lien shall not apply to any other property or assets of the Borrower or any
Subsidiary and (iii) such Lien shall secure only those obligations which it
secures on the date of such acquisition or the date such Person becomes a
Subsidiary, as the case may be and extensions, renewals and replacements thereof
that do not increase the outstanding principal amount thereof;

                  (e) Liens securing (i) Indebtedness incurred to finance the
acquisition, construction or improvement of any fixed or capital assets,
including Capital Lease Obligations and Indebtedness in respect of synthetic
leases (so long as such security interests and the Indebtedness secured thereby
are incurred prior to or within 90 days after such acquisition or the completion
of such construction or improvement) and (ii) extensions, renewals and
replacements of any such Indebtedness that do not increase the outstanding
principal amount thereof; provided that, in each case, such security interests
shall not apply to any other property or assets of the Borrower or any
Subsidiary;
<PAGE>   41
                                                                              36


                  (f) Liens incurred pursuant to Sale and Leaseback Transactions
or CMO Transactions permitted by Section 6.08;

                  (g) Liens incurred pursuant to any receivables securitization;

                  (h) Liens pursuant to the Security Documents;

                  (i) Liens on Collateral securing Indebtedness for borrowed
money in respect of debt securities issued in a public offering or a private
placement, which Liens shall be equal and ratable or subordinate with respect to
the Liens on the relevant Collateral securing the Obligations or the Guarantees
thereof, provided, that, (i) the documentation governing such Liens shall be
reasonably satisfactory to the Administrative Agent and (ii) in any event, such
Liens by their terms shall provide for automatic release under the circumstances
described in Section 9.13(b); and

                  (j) Liens securing Indebtedness or other obligations in an
aggregate principal amount not exceeding $50,000,000 at any time outstanding.

                  SECTION 6.04 Fundamental Changes. The Borrower will not merge
into or consolidate with any other Person, or permit any other Person (other
than a Subsidiary of the Borrower, so long as (a) the Borrower is the survivor
thereof and (b) no Default or Event of Default shall be in existence after
giving effect thereto) to merge into or consolidate with it, or sell, transfer,
lease or otherwise dispose of (in one transaction or in a series of
transactions) all or substantially all of the assets of the Borrower and its
Subsidiaries, or liquidate or dissolve.

                  SECTION 6.05 Investments, Loans, Advances, Guarantees and
Acquisitions. Prior to the Agere Distribution, the Borrower will not, and will
not permit any of its Subsidiaries to, purchase, hold or acquire any capital
stock, evidences of indebtedness or other securities (including any option,
warrant or other right to acquire any of the foregoing) of, make or permit to
exist any loans or advances to, Guarantee any obligations of, or make or permit
to exist any investment or any other interest in, Lucent or any Subsidiary of
Lucent (excluding Agere and its Subsidiaries), or purchase or otherwise acquire
(in one transaction or a series of transactions) any assets of Lucent or any
Subsidiary of Lucent (excluding Agere and its Subsidiaries) constituting a
business unit (collectively, "Investments"), except:

                  (a) Investments made prior to the Original Closing Date;

                  (b) intercompany Investments made in the ordinary course of
business;

                  (c) Investments contemplated by the agreements attached to the
Form S-1/A, dated February 7, 2001, of the Borrower or extensions, renewals or
replacements of such agreements on terms not materially less favorable to the
Borrower and its Subsidiaries; and

                  (d) 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 $25,000,000 during the term of
this Agreement.

                  SECTION 6.06 Restricted Payments. The Borrower will not, and
will not permit any of its Subsidiaries to, declare or make, or agree to pay or
make, directly or indirectly, any Restricted Payment to Lucent or any of its
Subsidiaries (excluding Agere and its Subsidiaries) prior to the Agere
Distribution, other than (a) dividends payable solely in additional shares of
Capital Stock of the
<PAGE>   42
                                                                              37


Borrower, (b) dividends made pursuant to a shareholders' rights plan of the
Borrower and (c) other dividends in an aggregate amount not in excess of
$25,000,000.

                  SECTION 6.07 Transactions with Affiliates. The Borrower will
not, and will not permit any of its Subsidiaries to, sell, lease or otherwise
transfer any property or assets to, or purchase, lease or otherwise acquire any
property or assets from, or otherwise engage in any other transactions with, any
of its Affiliates, except (a) in the ordinary course of business at prices and
on terms and conditions not less favorable to the Borrower or such Subsidiary
than could be obtained on an arm's-length basis from unrelated third parties,
(b) transactions between or among the Borrower and its Subsidiaries not
involving any other Affiliate, (c) any Restricted Payment permitted by Section
6.07 and (d) any transactions contemplated by the agreements attached to the
Form S-1/A, dated February 7, 2001, of the Borrower or extensions, renewals or
replacements of such agreements on terms not materially less favorable to the
Borrower and its Subsidiaries.

                  SECTION 6.08 Limitations on Sale and Leaseback Transactions
and CMO Transactions. The Borrower will not, and will not permit any Subsidiary
to, enter into any Sale and Leaseback Transaction or CMO Transaction unless the
sum of (a) the Attributable Debt or Indebtedness to be outstanding pursuant to
such Sale and Leaseback Transaction or CMO Transaction and (b) all Attributable
Debt or Indebtedness then outstanding pursuant to all other Sale and Leaseback
Transactions or CMO Transactions entered into by the Borrower or any Subsidiary
(after the Original Closing Date) would not exceed $50,000,000; provided, that,
to the extent the Total Exposure is reduced within 3 Business Days of receipt of
such Net Cash Proceeds by the amount of the Net Cash Proceeds of any such
transactions, the Attributable Debt or Indebtedness pursuant thereto shall not
constitute utilization of such $50,000,000 basket.

                                  ARTICLE VII

                                Events of Default

                  In case of the happening of any of the following events (each
an "Event of Default"):

                  (a) the Borrower shall fail to pay any principal of any Loan
when and as the same shall become due and payable, whether at the due date
thereof or at a date fixed for prepayment thereof or otherwise;

                  (b) the Borrower shall fail to pay any interest on any Loan or
any fee or any other amount (other than an amount referred to in clause (a) of
this Article) payable under this Agreement, when and as the same shall become
due and payable, and such failure shall continue unremedied for a period of
three Business Days;

                  (c) any representation or warranty made or deemed made by or
on behalf of any Loan Party in or in connection with any Loan Document or any
amendment or modification hereof or waiver hereunder, or in any report,
certificate, financial statement or other document furnished pursuant to or in
connection with any Loan Document or any amendment or modification hereof or
waiver hereunder, shall prove to have been incorrect in any material respect
when made or deemed made;

                  (d) the Borrower shall fail to observe or perform any
covenant, condition or agreement contained in Section 4.03, Section 5.05 (with
respect to the Borrower's existence), Section 5.10 or Article VI;
<PAGE>   43
                                                                              38


                  (e) the Borrower shall fail to observe or perform any
covenant, condition or agreement contained in this Agreement (other than those
specified in clause (a), (b) or (d) of this Article), and such failure shall
continue unremedied for a period of 30 days after notice thereof from the
Administrative Agent to the Borrower (which notice will be given at the request
of the Required Lenders);

                  (f) the Borrower or any Subsidiary shall fail to make any
payment (whether of principal or interest and regardless of amount) in respect
of any Material Indebtedness, when and as the same shall become due and payable;

                  (g) any event or condition occurs that results in any Material
Indebtedness becoming due prior to its scheduled maturity or that enables or
permits (with or without the giving of notice, the lapse of time or both) the
holder or holders of any Material Indebtedness or any trustee or agent on its or
their behalf to cause any Material Indebtedness to become due, or to require the
prepayment, repurchase, redemption or defeasance thereof, prior to its scheduled
maturity; provided that this clause (g) shall not apply to secured Indebtedness
that becomes due as a result of the voluntary sale or transfer of the property
or assets securing such Indebtedness;

                  (h) an involuntary proceeding shall be commenced or an
involuntary petition shall be filed seeking (i) liquidation, reorganization or
other relief in respect of the Borrower or any Subsidiary or its debts, or of a
substantial part of its assets, under any Federal, state or foreign bankruptcy,
insolvency, receivership or similar law now or hereafter in effect or (ii) the
appointment of a receiver, trustee, custodian, sequestrator, conservator or
similar official for the Borrower or any Subsidiary or for a substantial part of
its assets, and, in any such case, such proceeding or petition shall continue
undismissed for 60 days or an order or decree approving or ordering any of the
foregoing shall be entered;

                  (i) the Borrower or any Subsidiary shall (i) voluntarily
commence any proceeding or file any petition seeking liquidation, reorganization
or other relief under any Federal, state or foreign bankruptcy, insolvency,
receivership or similar law now or hereafter in effect, (ii) consent to the
institution of, or fail to contest in a timely and appropriate manner, any
proceeding or petition described in clause (h) of this Article, (iii) apply for
or consent to the appointment of a receiver, trustee, custodian, sequestrator,
conservator or similar official for the Borrower or any Subsidiary or for a
substantial part of its assets, (iv) file an answer admitting the material
allegations of a petition filed against it in any such proceeding, (v) make a
general assignment for the benefit of creditors or (vi) take any action for the
purpose of effecting any of the foregoing;

                  (j) the Borrower or any Subsidiary shall become unable, admit
in writing its inability or fail generally to pay its debts as they become due;

                  (k) one or more judgments for the payment of money in an
aggregate amount in excess of $100,000,000 shall be rendered against the
Borrower, any Subsidiary or any combination thereof and the same shall remain
undischarged for a period of 30 consecutive days during which execution shall
not be effectively stayed, or any action shall be legally taken by a judgment
creditor to attach or levy upon any assets of the Borrower or any Subsidiary to
enforce any such judgment;

                  (l) an ERISA Event shall have occurred that, in the opinion of
the Required Lenders, when taken together with all other ERISA Events that have
occurred, could reasonably be expected to result in a Material Adverse Effect;
or

                  (m) (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
<PAGE>   44
                                                                              39


of the Security Documents shall cease to be enforceable and of the same effect
and priority purported to be created thereby (except (A) as permitted by the
applicable Security Document or Section 9.13 or (B) by reason of the failure of
the Administrative Agent to maintain possession of any instruments delivered to
it or to file or record any documents delivered to it for filing or recording)
or (ii) the guarantee contained in Section 2 of the Guarantee and Collateral
Agreement shall cease, for any reason, to be in full force and effect (except as
permitted by the Guarantee and Collateral Agreement or Section 9.13) or any Loan
Party or any Affiliate of any Loan Party shall so assert; or

                  (n) a Change in Control shall occur;

then, and in every such event (other than an event described in paragraph (h) or
(i) above with respect to the Borrower), and at any time thereafter during the
continuance of such event, the Administrative Agent, at the request of the
Required Lenders, shall, by notice to the Borrower, take either or both of the
following actions, at the same or different times: (i) terminate forthwith the
Revolving Commitments and (ii) declare the Loans then outstanding to be
forthwith due and payable in whole or in part, whereupon the principal of the
Loans so declared to be due and payable, together with accrued interest thereon
and any unpaid accrued Facility Fee and all other liabilities of the Borrower
accrued hereunder, shall become forthwith due and payable, without presentment,
demand, protest or any other notice of any kind, all of which are hereby
expressly waived by the Borrower, anything contained herein to the contrary
notwithstanding, and, in any event with respect to the Borrower described in
paragraph (h) or (i) above, the Revolving Commitments shall automatically
terminate and the principal of the Loans then outstanding, together with accrued
interest thereon and any unpaid accrued Facility Fee and all other liabilities
of the Borrower accrued hereunder, shall automatically become due and payable,
without presentment, demand, protest or any other notice of any kind, all of
which are hereby expressly waived by the Borrower, anything contained herein to
the contrary notwithstanding.

                                  ARTICLE VIII

                            The Administrative Agent

                  In order to expedite the transactions contemplated by this
Agreement and the other Loan Documents, The Chase Manhattan Bank is hereby
appointed to act as Administrative Agent on behalf of the Lenders. Each of the
Lenders hereby irrevocably authorizes the Administrative Agent to take such
actions on behalf of such Lender and to exercise such powers as are specifically
delegated to the Administrative Agent by the terms and provisions hereof or of
any other Loan Document, together with such actions and powers as are reasonably
incidental thereto. The Administrative Agent is hereby expressly authorized by
the Lenders, without hereby limiting any implied authority, (a) to receive on
behalf of the Lenders all payments of principal of and interest on the Loans and
all other amounts due to the Lenders hereunder, and promptly to distribute to
each Lender its proper share of each payment so received; (b) to give notice on
behalf of each of the Lenders to the Borrower of any Event of Default specified
in this Agreement of which the Administrative Agent has actual knowledge
acquired in connection with its agency hereunder; and (c) to distribute to each
Lender copies of all notices, financial statements and other materials delivered
by the Borrower pursuant to this Agreement as received by the Administrative
Agent.

                  Neither the Administrative Agent nor any of its directors,
officers, employees or agents shall be liable as such for any action taken or
omitted by any of them except for its or his own gross negligence or willful
misconduct, or be responsible for any statement, warranty or representation
herein or the contents of any document delivered in connection herewith, or be
required to ascertain or to make any inquiry concerning the performance or
observance by the Borrower of any of the terms, conditions, covenants or
agreements contained in this Agreement or any other Loan Document. The
Administrative
<PAGE>   45
                                                                              40


Agent shall not be responsible to the Lenders for the due execution,
genuineness, validity, enforceability or effectiveness of this Agreement, any
other Loan Document or other instruments or agreements. The Administrative Agent
may deem and treat the Lender which makes any Loan as the holder of the
indebtedness resulting therefrom for all purposes hereof until it shall have
received notice from such Lender, given as provided herein, of the transfer
thereof. The Administrative Agent shall in all cases be fully protected in
acting, or refraining from acting, in accordance with written instructions
signed by the Required Lenders and, except as otherwise specifically provided
herein, such instructions and any action or inaction pursuant thereto shall be
binding on all the Lenders. The Administrative Agent shall, in the absence of
knowledge to the contrary, be entitled to rely on any instrument or document
believed by it in good faith to be genuine and correct and to have been signed
or sent by the proper person or persons. Neither the Administrative Agent nor
any of its directors, officers, employees or agents shall have any
responsibility to the Borrower on account of the failure of or delay in
performance or breach by any Lender of any of its obligations hereunder or to
any Lender on account of the failure of or delay in performance or breach by any
other Lender or the Borrower of any of their respective obligations hereunder or
in connection herewith. The Administrative Agent may execute any and all duties
hereunder by or through agents or employees and shall be entitled to rely upon
the advice of legal counsel selected by it with respect to all matters arising
hereunder or under any other Loan Document and shall not be liable for any
action taken or suffered in good faith by it in accordance with the advice of
such counsel.

                  The Lenders hereby acknowledge that the Administrative Agent
shall be under no duty to take any discretionary action permitted to be taken by
it pursuant to the provisions of this Agreement or any other Loan Document
unless it shall be requested in writing to do so by the Required Lenders.

                  Subject to the appointment and acceptance of a successor
Administrative Agent as provided below, the Administrative Agent may resign at
any time by notifying the Lenders and the Borrower. Upon any such resignation,
the Required Lenders shall have the right to appoint a successor Administrative
Agent acceptable to the Borrower. If no successor shall have been so appointed
by the Required Lenders and shall have accepted such appointment within 30 days
after the retiring Administrative Agent gives notice of its resignation, then
the retiring Administrative Agent may, on behalf of the Lenders, appoint a
successor Administrative Agent which shall be a bank with an office in New York,
New York, having a combined capital and surplus of at least $500,000,000 or an
Affiliate of any such bank. Upon the acceptance of any appointment as
Administrative Agent hereunder by a successor bank, such successor shall succeed
to and become vested with all the rights, powers, privileges and duties of the
retiring Administrative Agent and the retiring Administrative Agent shall be
discharged from its duties and obligations hereunder. After the Administrative
Agent's resignation hereunder, the provisions of this Article and Section 8.05
shall continue in effect for its benefit in respect of any actions taken or
omitted to be taken by it while it was acting as Administrative Agent.

                  With respect to the Loans made by it hereunder, the
Administrative Agent in its individual capacity and not as Agent shall have the
same rights and powers as any other Lender and may exercise the same as though
it were not the Administrative Agent, and the Administrative Agent and its
Affiliates may accept deposits from, lend money to and generally engage in any
kind of business with the Borrower or any Subsidiary or other Affiliate thereof
as if it were not the Administrative Agent.

                  Each Lender agrees (i) to reimburse the Administrative Agent,
on demand, in the amount of its pro rata share (based on its Commitment
hereunder, or, after the Maturity Date, its Loans hereunder) of any expenses
incurred for the benefit of the Lenders by the Administrative Agent, including
counsel fees and compensation of agents and employees paid for services rendered
on behalf of the Lenders, which shall not have been reimbursed by the Borrower,
and (ii) to indemnify and hold harmless the Administrative Agent and any of its
directors, officers, employees or agents, on demand, in the amount of such pro
rata share, from and against any and all liabilities, taxes, obligations,
losses, damages, penalties,
<PAGE>   46
                                                                              41


actions, judgments, suits, costs, expenses or disbursements of any kind or
nature whatsoever which may be imposed on, incurred by or asserted against it in
its capacity as the Administrative Agent or any of them in any way relating to
or arising out of this Agreement, any other Loan Document or any action taken or
omitted by it or any of them under this Agreement or any other Loan Document to
the extent the same shall not have been reimbursed by the Borrower; provided
that no Lender shall be liable to the Administrative Agent for any portion of
such liabilities, obligations, losses, damages, penalties, actions, judgments,
suits, costs, expenses or disbursements resulting from the gross negligence or
willful misconduct of the Administrative Agent or any of its directors,
officers, employees or agents.

                  Each Lender acknowledges that it has, independently and
without reliance upon the Administrative Agent or any other Lender and based on
such documents and information as it has deemed appropriate, made its own credit
analysis and decision to enter into this Agreement. Each Lender also
acknowledges that it will, independently and without reliance upon the
Administrative Agent or any other Lender and based on such documents and
information as it shall from time to time deem appropriate, continue to make its
own decisions in taking or not taking action under or based upon this Agreement,
any other Loan Document or any related agreement or any document furnished
hereunder or thereunder.

                  The Syndication Agent shall have no duties or responsibilities
hereunder in its capacity as such.

                                   ARTICLE IX

                                  Miscellaneous

                  SECTION 9.01 Notices. Notices and other communications
provided for herein shall be in writing and shall be delivered by hand or
overnight courier service, mailed or sent by telecopy, as follows:

                  (a) if to the Borrower, to it at Agere Systems Inc., 555 Union
Boulevard, Allentown, Pennsylvania 18109, Attention of General Counsel and
Attention of Treasurer (Facsimile No. 610-712-4630);

                  (b) if to the Administrative Agent, to it at One Chase
Manhattan Plaza, Eighth Floor, New York, New York 10081, Attention of Camille
Wilson (Facsimile No. 212-552-5700); and

                  (c) if to a Lender, to it at its address (or telecopy number)
set forth in an Administrative Questionnaire delivered to the Administrative
Agent.

                  All notices and other communications given to any party hereto
in accordance with the provisions of this Agreement shall be deemed to have been
given on the date of receipt if delivered by hand or overnight courier service
or sent by telecopy, or on the date five Business Days after dispatch by
certified or registered mail if mailed, in each case delivered, sent or mailed
(properly addressed) to such party as provided in this Section 9.01 or in
accordance with the latest unrevoked direction from such party given in
accordance with this Section 9.01.

                  SECTION 9.02 Survival of Agreement. All covenants, agreements,
representations and warranties made by any Loan Party in any Loan Document and
in the certificates or other instruments prepared or delivered in connection
with or pursuant to this Agreement shall be considered to have been relied upon
by the Lenders and shall survive the making by the Lenders of the Loans
regardless of any investigation made by the Lenders or on their behalf, and
shall continue in full force and effect as long as the principal of or any
accrued interest on any Loan or any Fee or any other
<PAGE>   47
                                                                              42


amount payable under this Agreement is outstanding and unpaid and so long as the
Revolving Commitments have not been terminated.

                  SECTION 9.03 Binding Effect. This Agreement shall become
effective when the conditions precedent set forth in Section 4.02 shall have
been satisfied, and thereafter shall be binding upon and inure to the benefit of
the Borrower, the Administrative Agent and each Lender and their respective
successors and assigns.

                  SECTION 9.04 Successors and Assigns. (a)Whenever in this
Agreement any of the parties hereto is referred to, such reference shall be
deemed to include the successors and assigns of such party, and all covenants,
promises and agreements by or on behalf of the Borrower, the Administrative
Agent or the Lenders that are contained in this Agreement shall bind and inure
to the benefit of their respective successors and assigns.

                  (b) Each Lender may assign to one or more assignees all or a
portion of its interests, rights and obligations under this Agreement (including
all or a portion of its Commitment and the Loans at the time owing to it);
provided, however, that (i) except in the case of assignments to a Lender or an
affiliate of a Lender, the Administrative Agent and the Borrower (except after
the occurrence and during the continuance of an Event of Default) must give
their prior written consent to such assignment (such consent not to be
unreasonably withheld or delayed), (ii) the amount of the Revolving Commitment
(or, after the Maturity Date, the Loans) of the assigning Lender subject to each
such assignment (determined as of the date the Assignment and Acceptance with
respect to such assignment is delivered to the Administrative Agent) shall not
be less than $5,000,000 (or the remaining balance of its Revolving Commitment or
Revolving Loans, as applicable) and the amount of the Revolving Commitment (or,
after the Maturity Date, the Revolving Loans) of such Lender remaining after
such assignment shall not be less than $5,000,000 or shall be zero, in each case
unless otherwise agreed by the Borrower and the Administrative Agent, (iii) in
the case of assignments of Term Loans, the amount of the Term Loan of the
assigning Lender subject to each such assignment (determined as of the date the
Assignment and Acceptance with respect to such assignment is delivered to the
Administrative Agent) shall not be less than $1,000,000 (or the remaining
balance of its Term Loan) and the amount of the Term Loan of such Lender
remaining after such assignment shall not be less than $1,000,000 or shall be
zero, in each case unless otherwise agreed by the Borrower and the
Administrative Agent, (iv) the parties to each such assignment shall execute and
deliver to the Administrative Agent an Assignment and Acceptance, and a
processing and recordation fee of $3,500, (v) the assignee, if it shall not be a
Lender, shall deliver to the Administrative Agent an Administrative
Questionnaire and (vi) any such assignment of a Revolving Commitment prior to
the Assumption Effective Date shall also involve an assignment of a like
percentage of the "Revolving Commitment" of such Lender under the Lucent
Assumable Credit Agreement. Upon acceptance and recording pursuant to paragraph
(e) of this Section 9.04, from and after the effective date specified in each
Assignment and Acceptance, which effective date shall be at least five Business
Days after the execution thereof, (A) the assignee thereunder shall be a party
hereto and, to the extent of the interest assigned by such Assignment and
Acceptance, have the rights and obligations of a Lender under this Agreement,
(B) the assigning Lender thereunder shall, to the extent of the interest
assigned by such Assignment and Acceptance, be released from its obligations
under this Agreement, except with respect to the confidentiality of Information
pursuant to Section 9.14 (and, in the case of an Assignment and Acceptance
covering all or the remaining portion of an assigning Lender's rights and
obligations under this Agreement, such Lender shall cease to be a party hereto
(but shall continue to be entitled to the benefits of Sections 2.12, 2.14, 2.18
and 9.05, as well as to the Facility Fee accrued for its account hereunder and
not yet paid)) and (C) Schedule 1.01 shall be deemed amended to give effect to
such assignment.
<PAGE>   48
                                                                              43


                  (c) By executing and delivering an Assignment and Acceptance,
the assigning Lender thereunder and the assignee thereunder shall be deemed to
confirm to and agree with each other and the other parties hereto as follows:
(i) such assigning Lender warrants that it is the legal and beneficial owner of
the interest being assigned thereby free and clear of any adverse claim; (ii)
except as set forth in (i) above, such assigning Lender makes no representation
or warranty and assumes no responsibility with respect to any statements,
warranties or representations made in or in connection with this Agreement or
the execution, legality, validity, enforceability, genuineness, sufficiency or
value of this Agreement or any other instrument or document furnished pursuant
hereto or the financial condition of the Borrower or the performance or
observance by the Borrower of any of its obligations under this Agreement or any
other instrument or document furnished pursuant hereto; (iii) such assignee
represents and warrants that it is legally authorized to enter into such
Assignment and Acceptance; (iv) such assignee confirms that it has received a
copy of this Agreement, together with copies of the most recent financial
statements delivered pursuant to Section 5.02 and such other documents and
information as it has deemed appropriate to make its own credit analysis and
decision to enter into such Assignment and Acceptance; (v) such assignee will
independently and without reliance upon the Administrative Agent, such assigning
Lender 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 decisions in
taking or not taking action under this Agreement; (vi) such assignee appoints
and authorizes the Administrative Agent to take such action as agent on its
behalf and to exercise such powers under this Agreement as are delegated to the
Administrative Agent by the terms hereof, together with such powers as are
reasonably incidental thereto; and (vii) such assignee agrees that it will
perform in accordance with their terms all the obligations which by the terms of
this Agreement are required to be performed by it as a Lender.

                  (d) The Administrative Agent shall maintain at one of its
offices in the City of New York a copy of each Assignment and Acceptance
delivered to it and a register for the recordation of the names and addresses of
the Lenders, and the Revolving Commitment of, and the principal amount of the
Loans owing to, each Lender pursuant to the terms hereof from time to time (the
"Register"). The entries in the Register shall be conclusive in the absence of
manifest error and the Borrower, the Administrative Agent and the Lenders may
treat each person whose name is recorded in the Register pursuant to the terms
hereof as a Lender hereunder for all purposes of this Agreement.

                  (e) Upon its receipt of a duly completed Assignment and
Acceptance executed by an assigning Lender and an assignee together with an
Administrative Questionnaire completed in respect of the assignee (unless the
assignee shall already be a Lender hereunder), the processing and recordation
fee referred to in paragraph (b) above and, if required, the written consent of
the Borrower to such assignment, the Administrative Agent shall (i) accept such
Assignment and Acceptance and (ii) record the information contained therein in
the Register.

                  (f) Each Lender may, without the consent of the Borrower or
the Administrative Agent, sell participations to one or more banks or other
entities in all or a portion of its rights and obligations under this Agreement
(including all or a portion of its Commitment and the Loans owing to it);
provided, however, that (i) such Lender's obligations under this Agreement shall
remain unchanged, (ii) such Lender shall remain solely responsible to the other
parties hereto for the performance of such obligations, (iii) each participating
bank or other entity shall be entitled to the benefit of the cost protection
provisions contained in Sections 2.12, 2.14 and 2.18 to the same extent as if it
was the selling Lender, except that all claims and petitions for payment and
payments made pursuant to such Sections shall be made through such selling
Lender, and (iv) the Borrower, the Administrative Agent and the other Lenders
shall continue to deal solely and directly with such selling Lender in
connection with such Lender's rights and obligations under this Agreement, and
such Lender shall retain the sole right (and participating banks or other
entities shall have no right) to enforce the obligations of the Borrower
relating to the Loans and to approve any amendment, modification or waiver of
any provision of this Agreement
<PAGE>   49
                                                                              44


or any other Loan Document (other than amendments, modifications or waivers
decreasing any fees payable hereunder or the amount of principal of or the rate
at which interest is payable on the Loans, or extending any scheduled principal
payment date or date fixed for the payment of interest on the Loans).

                  (g) Any Lender or participant may, in connection with any
assignment or participation or proposed assignment or participation pursuant to
this Section 9.04, disclose to the assignee or participant or proposed assignee
or participant any information relating to the Borrower furnished to such Lender
by or on behalf of the Borrower; provided that, prior to any such disclosure,
each such assignee or participant or proposed assignee or participant shall
execute an agreement whereby such assignee or participant shall agree (subject
to customary exceptions) to preserve the confidentiality of any such
confidential information relating to the Borrower.

                  (h) The Borrower shall not assign or delegate any of its
respective rights and duties hereunder without the prior written consent of all
Lenders and any attempted assignment without such consent shall be void.

                  (i) For avoidance of doubt, the parties to this Agreement
acknowledge that the provisions of this Section 9.04 concerning assignments
relate only to absolute assignments and that such provisions do not prohibit
assignments creating security interests, including any pledge or assignment by a
Lender to any Federal Reserve Bank in accordance with applicable law; provided
that no such assignment shall release any Lender from its obligations hereunder
or substitute any such Bank for such Lender as a party hereto. In order to
facilitate such an assignment, the Borrower shall, at the request of the
assigning Lender, duly execute and deliver to the assigning Lender a promissory
note or notes evidencing the Loans made to the Borrower by the assigning Lender
hereunder.

                  SECTION 9.05 Expenses; Indemnity. (a)The Borrower agrees to
pay all reasonable out-of-pocket expenses incurred by the Administrative Agent
and the Arrangers in connection with this Agreement or any other Loan Document
or in connection with any amendments, modifications or waivers of the provisions
hereof or thereof, or incurred by the Administrative Agent or any Lender in
connection with the enforcement or protection of their rights in connection with
this Agreement or any other Loan Document or in connection with the Loans made
hereunder, including the fees and disbursements of counsel for the
Administrative Agent or, in the case of enforcement or protection, Lenders.

                  (b) The Borrower agrees to indemnify the Administrative Agent,
the Arrangers, the Lenders, Affiliates, and their respective directors,
officers, employees and agents (each such person being called an "Indemnitee")
against, and to hold each Indemnitee harmless from, any and all losses, claims,
damages, liabilities and related expenses, including reasonable counsel fees and
expenses, incurred by or asserted against any Indemnitee arising out of (i) the
execution or delivery of this Agreement, any other Loan Document or any
agreement or instrument contemplated thereby, the performance by the parties
thereto of their respective obligations thereunder or the consummation of the
transactions contemplated thereby, (ii) the use of the proceeds of the Loans or
(iii) any claim, litigation, investigation or proceeding relating to any of the
foregoing, whether or not any Indemnitee is a party thereto; provided that such
indemnity shall not, as to any Indemnitee, be available to the extent that such
losses, claims, damages, liabilities or related expenses resulted from the gross
negligence or willful misconduct of such Indemnitee.

                  (c) The provisions of this Section 9.05 shall remain operative
and in full force and effect regardless of the expiration of the term of this
Agreement, the consummation of the transactions contemplated hereby, the
repayment of any of the Loans, the invalidity or unenforceability of any term or
<PAGE>   50
                                                                              45


provision of this Agreement or any investigation made by or on behalf of the
Administrative Agent or any Lender. All amounts due under this Section 9.05
shall be payable on written demand therefor.

                  SECTION 9.06 Applicable Law. THIS AGREEMENT SHALL BE CONSTRUED
IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF NEW YORK.

                  SECTION 9.07 Waivers; Amendment. (a)No failure or delay of the
Administrative Agent or any Lender in exercising any power or right hereunder
shall operate as a waiver thereof, nor shall any single or partial exercise of
any, such right or power, or any abandonment or discontinuance of steps to
enforce such a right or power, preclude any other or further exercise thereof or
the exercise of any other right or power. The rights and remedies of the
Administrative Agent and the Lenders hereunder are cumulative and are not
exclusive of any rights or remedies which they would otherwise have. No waiver
of any provision of this Agreement or consent to any departure by the Borrower
therefrom shall in any event be effective unless the same shall be permitted by
paragraph (b) below, and then such waiver or consent shall be effective only in
the specific instance and for the purpose for which given. No notice or demand
on the Borrower in any case shall entitle the Borrower to any other or further
notice or demand in similar or other circumstances.

                  (b) Neither this Agreement, any other Loan Document nor any
provision hereof or thereof may be waived, amended or modified except pursuant
to an agreement or agreements in writing entered into by the Borrower and the
Required Lenders; provided, however, that no such agreement shall (i) decrease
the principal amount of, or extend the maturity of or any scheduled principal
payment date or date for the payment of any interest on any Loan, or waive or
excuse any such payment or any part thereof or decrease the rate of interest on
any Loan, without the prior written consent of each Lender directly affected
thereby, (ii) increase the Revolving Commitment or decrease the Facility Fee of
any Lender without the prior written consent of such Lender, or (iii) amend or
modify the provisions of Section 2.15 or Section 9.04(h), the provisions of this
Section or the definition of "Required Lenders", or release all or substantially
all of the Collateral or the Guarantees of the Subsidiary Guarantors pursuant to
the Guarantee and Collateral Agreement (except as provided therein or in Section
9.13), without the prior written consent of each Lender, provided, further,
however, that no such agreement shall amend, modify or otherwise affect the
rights or duties of the Administrative Agent hereunder without the prior written
consent of the Administrative Agent. Each Lender shall be bound by any waiver,
amendment or modification authorized by this Section and any consent by any
Lender pursuant to this Section shall bind any assignee of its rights and
interests hereunder.

                  SECTION 9.08 Entire Agreement. This Agreement constitutes the
entire contract among the parties relative to the subject matter hereof. Any
previous agreement among the parties with respect to the subject matter hereof
is superseded by this Agreement. Nothing in this Agreement expressed or implied,
is intended to confer upon any party other than the parties hereto any rights,
remedies, obligations or liabilities under or by reason of this Agreement.

                  SECTION 9.09 Severability. In the event any one or more of the
provisions contained in this Agreement should be held invalid, illegal or
unenforceable in any respect, the validity, legality and enforceability of the
remaining provisions contained herein shall not in any way be affected or
impaired thereby. The parties shall endeavor in good-faith negotiations to
replace the invalid, illegal or unenforceable provisions with valid provisions
the economic effect of which comes as close as possible to that of the invalid,
illegal or unenforceable provisions.

                  SECTION 9.10 Right of Setoff. If an Event of Default shall
have occurred and be continuing under clause (a) or (b) of Article VII, or if
the Loans shall become due and
<PAGE>   51
                                                                              46


payable pursuant to Article VII, each Lender and each of its Affiliates is
hereby authorized at any time and from time to time, to the fullest extent
permitted by law, to set off and apply any and all deposits (general or special,
time or demand, provisional or final) at any time held and other obligations at
any time owing by such Lender or Affiliate to or for the credit or the account
of any Loan Party against any of and all the obligations of any Loan Party now
or hereafter existing under this Agreement or any other Loan Document held by
such Lender, irrespective of whether or not such Lender shall have made any
demand under this Agreement or any other Loan Document and although such
obligations may be unmatured. The rights of each Lender under this Section are
in addition to other rights and remedies (including other rights of setoff)
which such Lender may have.

                  SECTION 9.11 Counterparts. This Agreement may be executed in
two or more counterparts, each of which shall constitute an original but all of
which when taken together shall constitute but one contract, and shall become
effective as provided in Section 9.03.

                  SECTION 9.12 Headings. Article and Section headings and the
Table of Contents used herein are for convenience of reference only, are not
part of this Agreement and are not to affect the construction of, or to be taken
into consideration in interpreting, this Agreement.

                  SECTION 9.13 Release 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) 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, including any CMO Transaction, not prohibited by any Loan
Document or that has been consented to in accordance with Section 9.07 or (ii)
under the circumstances described in paragraph (b).

                  (b) On the Exposure Reduction Date (or if, on such date, the
Borrower Debt Ratings are not both BBB- or better from S&P and Baa3 or better
from Moody's, in each case on stable watch or the equivalent, the first date
after the Exposure Reduction Date on which both such ratings have been
obtained), the Collateral shall automatically be released from the Liens created
by the Security Documents (it being understood that the Guarantees created by
the Guarantee and Collateral Agreement shall nevertheless remain in effect).

                  SECTION 9.14 Confidentiality. Each of the Administrative Agent
and the Lenders agrees to maintain the confidentiality of the Information (as
defined below), except that Information may be disclosed (a) to its and its
Affiliates' directors, officers, employees and agents, including accountants,
legal counsel and other advisors (it being understood that the Persons to whom
such disclosure is made will be informed of the confidential nature of such
Information and instructed to keep such Information confidential), (b) to the
extent requested by any regulatory authority, (c) to the extent required by
applicable laws or regulations or by any subpoena or similar legal process, (d)
to any other party to this Agreement, (e) in connection with the exercise of any
remedies hereunder or any suit, action or proceeding relating to this Agreement
or the enforcement of rights hereunder, (f) subject to an express agreement
containing provisions substantially the same as those of this Section, to any
assignee of or participant in, or any prospective assignee of or participant in,
any of its rights or obligations under this Agreement, (g) with the consent of
the Borrower or (h) to the extent such Information (i) becomes publicly
available other than as a result of a breach of this Section or (ii) becomes
available to the Administrative Agent or any Lender on a nonconfidential basis
from a source other than the Borrower. For the purposes of this Section,
"Information" means all information received from the Borrower relating to the
Borrower or its business, other than any such information that is available to
the Administrative Agent or any Lender on a nonconfidential basis prior to
disclosure by the Borrower; provided that, in the case of information received
from the Borrower after the Original Closing Date, such
<PAGE>   52
                                                                              47


information is clearly identified at the time of delivery as confidential. Any
Person required to maintain the confidentiality of Information as provided in
this Section shall be considered to have complied with its obligation to do so
if such Person has exercised the same degree of care to maintain the
confidentiality of such Information as such Person would accord to its own
confidential information.

                  SECTION 9.15 Submission to Jurisdiction. 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 of America 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 the
Borrower at its address referred to in Section 9.01 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

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.

                  SECTION 9.16 WAIVER OF JURY TRIAL. EACH PARTY HERETO HEREBY
IRREVOCABLY AND UNCONDITIONALLY WAIVES TRIAL BY JURY IN ANY LEGAL ACTION OR
PROCEEDING RELATING TO THIS AGREEMENT OR ANY OTHER LOAN DOCUMENT AND FOR ANY
COUNTERCLAIM THEREIN.

                  SECTION 9.17 Withdrawal of Lucent. Concurrently with the
assignment by Lucent, and the assumption by the Borrower, on the Assumption
Effective Date of Lucent's rights and monetary obligations under the Lucent
Assumable Credit Agreement as set forth in Section 2.01 hereto, Lucent shall
cease to be a party to this Agreement.
<PAGE>   53
                                                                              48


                  IN WITNESS WHEREOF, the Borrower, Lucent, the Administrative
Agent, the Syndication Agent and the Lenders have caused this Agreement to be
duly executed by their respective authorized officers as of the day and year
first above written.

                 AGERE SYSTEMS INC., as the Borrower

                 By:
                    ---------------------------------------------------------
                      Name:
                      Title:

                 LUCENT TECHNOLOGIES INC.  (solely to permit the assumption
                 of its obligations under the Lucent Assumable Credit
                 Agreement)

                 By:
                    ---------------------------------------------------------
                      Name:
                      Title:

                 THE CHASE MANHATTAN BANK,
                 individually and as Administrative Agent

                 By:
                    ---------------------------------------------------------
                      Name:
                      Title:

                 SALOMON SMITH BARNEY INC., as Syndication Agent

                 By:
                    ---------------------------------------------------------
                      Name:
                      Title: