Document:

Exhibit 10.12

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                AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT

                           Dated as of August 31, 2000

                                      among

                    WESTELL TECHNOLOGIES, INC., WESTELL, INC.

               WESTELL INTERNATIONAL, INC., CONFERENCE PLUS, INC.,

                               and TELTREND, INC.

                                       and

                       LASALLE BANK NATIONAL ASSOCIATION,

                          HARRIS TRUST AND SAVINGS BANK

                                       and

                        LASALLE BANK NATIONAL ASSOCIATION
                                    AS AGENT

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                                TABLE OF CONTENTS

                                                                            Page

1.       DEFINITIONS...........................................................8

         1.1      General Terms................................................8

         1.2      Accounting Terms............................................22

         1.3      Certain Matters of Construction.............................22

2.       LOANS; LETTERS OF CREDIT; FEES; TERMS OF PAYMENT.....................23

         2.1      Revolving Credit Facility...................................23

         2.2      Borrowing Procedures........................................23

         2.3      Payments and Prepayments....................................24

         2.4      Pro Rata Treatment..........................................25

         2.5      Funding Reliance............................................25

         2.6      Sharing of Payments, Etc....................................25

         2.7      Letters of Credit...........................................26

         2.8      All Loans One Obligation....................................29

         2.9      Payment of Over Advances....................................29

         2.10     Interest....................................................29

         2.11     Fees........................................................31

         2.12     Lockbox; Crediting Collections..............................32

         2.13     Agent Rights to Collect Directly............................33

         2.14     Disputes and Allowances.....................................33

         2.15     Monthly Statements..........................................33

         2.16     Recordkeeping...............................................33

         2.17     Payment Dates...............................................34

         2.18     Regulations Affecting Loans.................................34

         2.19     Renewals: Conversion and Continuation of Loans..............34

         2.20     Indemnity...................................................35

         2.21     Change in Legality..........................................36

         2.22     Unavailability of Deposits or Inability to Ascertain,
                  or Inadequacy of Libor Rate.................................36

         2.23     Increased Cost and Reduced Return...........................37

         2.24     Discretion of Lenders as to Manner of Funding...............38

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                               TABLE OF CONTENTS
                                  (continued)

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         2.25     Right of Lenders to Fund through Other Offices..............38

         2.26     Mitigation of Circumstances; Replacement of Lenders.........38

         2.27     Adjustments to Applicable Margin............................39

3.       TERMS OF THIS AGREEMENT; PREPAYMENTS.................................39

         3.1      Initial Term and Renewal Terms..............................39

         3.2      Agent Right to Terminate....................................39

         3.3      Effects of Termination......................................39

         3.4      Voluntary Prepayment........................................40

         3.5      Mandatory Prepayments.......................................40

         3.6      Reductions of the Revolving Loan Commitment.................40

         3.7      Termination: Reduction of Maximum Credit Facility...........40

4.       CREATION OF LIEN AND COLLATERAL......................................41

         4.1      Security Interest...........................................41

         4.2      Preservation of Collateral and Perfection of
                  Security Interests..........................................41

         4.3      Inspection; Appointment as Attorney-in-Fact.................41

5.       CONDITIONS PRECEDENT.................................................42

         5.1      Closing, Conditions to Initial Loan and Closing.............42

         5.2      Condition to All Loans and Letters of Credit................45

6.       WARRANTIES, REPRESENTATIONS, AND COVENANTS - COLLATERAL..............46

         6.1      Collateral Warranties Generally.............................46

         6.2      Equipment, Inventory Collateral Warranties and Covenants....47

7.       GENERAL CONTINUING WARRANTIES AND REPRESENTATIONS....................48

         7.1      Office......................................................48

         7.2      Existence...................................................48

         7.3      Authority...................................................48

         7.4      Validity....................................................49

         7.5      Solvency....................................................49

         7.6      Compliance With Laws........................................49

         7.7      Actions or Proceedings......................................49

         7.8      Trademarks, Licenses, Etc...................................49

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                               TABLE OF CONTENTS
                                  (continued)

                                                                            Page

         7.9      Financial Statements........................................50

         7.10     Conduct of Business.........................................50

         7.11     Environmental Laws..........................................50

         7.12     Permits and Licenses........................................51

         7.13     ERISA.......................................................51

         7.14     Public Utility Holding Company Act..........................51

         7.15     Real Property...............................................52

         7.16     Insurance...................................................52

         7.17     Information.................................................52

         7.18     No Default..................................................52

         7.19     Customer and Trade Relations................................52

         7.20     Other Names.................................................52

         7.21     Tax Obligations.............................................53

         7.22     Employee Controversies......................................53

         7.23     Investment Company Act......................................53

         7.24     Subsidiaries................................................53

         7.25     Full Disclosure.............................................53

         7.26     Regulation U................................................53

         7.27     Capital Stock...............................................54

         7.28     Occupational Safety and Health..............................54

8.       NEGATIVE COVENANTS...................................................54

         8.1      Sale, Transfer or Encumbrance of Assets.....................54

         8.2      Name or Identity Change.....................................55

         8.3      Guaranties..................................................55

         8.4      Change in Business..........................................55

         8.5      Loans and Investments.......................................55

         8.6      Indebtedness................................................56

         8.7      Prepayments.................................................57

         8.8      Affiliate Transactions......................................57

         8.9      Consolidations, Mergers.....................................57

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                               TABLE OF CONTENTS
                                  (continued)

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         8.10     Transactions Not in the Ordinary Course; Liquidations.......57

         8.11     Suspension of Business......................................57

         8.12     Distributions...............................................57

         8.13     ERISA.......................................................57

         8.14     Change of Control...........................................57

         8.15     Bank Accounts...............................................57

         8.16     Operating Lease Obligations.................................57

         8.17     Capital Expenditures........................................57

         8.18     Inconsistent Agreements.....................................58

         8.19     Business Activities.........................................58

         8.20     Fiscal Year.................................................58

9.       AFFIRMATIVE COVENANTS - GENERAL......................................58

         9.1      Payments....................................................58

         9.2      Taxes.......................................................58

         9.3      Insurance...................................................58

         9.4      Litigation..................................................59

         9.5      Books and Records...........................................59

         9.6      Compliance with Laws........................................60

         9.7      Expense Reimbursements......................................60

         9.8      ERISA Reportable Events.....................................60

         9.9      Preservation of Corporate Existence.........................60

         9.10     Instruments and Chattel Paper...............................60

         9.11     Leases......................................................61

         9.12     Defense of Collateral.......................................61

         9.13     Environmental Matters - Indemnification.....................61

         9.14     Ownership of CPI............................................61

         9.15     SEC Filings.................................................61

         9.16     Employee Benefit Plans......................................61

         9.17     Environmental Matters.......................................62

         9.18     Reports to the SEC and to Shareholders......................62

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                               TABLE OF CONTENTS
                                  (continued)

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10.      AFFIRMATIVE COVENANTS - REPORTING....................................62

         10.1     Borrowing Base Certificate; Aging Reports...................62

         10.2     Compliance Certificate......................................62

         10.3     Financial Statements........................................62

         10.4     Accounting Information......................................64

         10.5     Other Information and Changes...............................64

11.      AFFIRMATIVE COVENANTS - FINANCIAL....................................64

         11.1     Interest Coverage Ratio.....................................64

         11.2     EBITDA......................................................64

         11.3     Net Worth...................................................65

12.      EVENTS OF DEFAULT....................................................65

         12.1     Payment.....................................................65

         12.2     Non-Compliance with Loan Documents..........................65

         12.3     Breach of Representation....................................65

         12.4     Other Material Obligations..................................66

         12.5     Pension Plans...............................................66

         12.6     Judgments...................................................66

         12.7     Insolvency and Related Proceedings..........................66

         12.8     Material Agreements.........................................66

         12.9     State Action................................................66

         12.10    Tax Liens...................................................67

         12.11    Insurance...................................................67

         12.12    Change of Control...........................................67

13.      RIGHTS AND REMEDIES..................................................67

         13.1     Rights and Remedies Generally...............................67

         13.2     Rights Cumulative...........................................69

14.      TAXES AND EXPENSES REGARDING THE COLLATERAL..........................69

15.      CERTAIN WAIVERS......................................................69

         15.1     Application of Payments.....................................69

         15.2     Demand, etc.................................................70

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                               TABLE OF CONTENTS
                                  (continued)

                                                                            Page

         15.3     Risk of Loss Regarding Collateral...........................70

         15.4     Confidentiality.............................................70

16.      NOTICES..............................................................70

17.      AGENT................................................................72

         17.1     Appointment and Authorization...............................72

         17.2     Delegation of Duties........................................72

         17.3     Liability of Agent..........................................72

         17.4     Reliance by Agent...........................................73

         17.5     Notice of Default...........................................73

         17.6     Credit Decision.............................................73

         17.7     Indemnification.............................................74

         17.8     Agent in Individual Capacity................................74

         17.9     Successor Agent.............................................74

         17.10    Collateral Matters..........................................75

18.      ASSIGNMENTS; PARTICIPATIONS..........................................75

         18.1     Assignments.................................................75

         18.2     Participations..............................................76

19.      CHOICE OF LAW AND VENUE..............................................77

20.      INDEMNITY............................................................77

21.      GENERAL PROVISIONS...................................................78

         21.1     Acceptance..................................................78

         21.2     Binding Agreement...........................................78

         21.3     Waiver and Amendment........................................78

         21.4     Section Headings............................................79

         21.5     Construction................................................79

         21.6     Severability................................................79

         21.7     Entire Agreement............................................79

         21.8     No Fiduciary Relationship or Joint Venture..................79

         21.9     Publicity...................................................79

         21.10    Counterparts................................................79

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                               TABLE OF CONTENTS
                                  (continued)

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         21.11    Conflict....................................................79

22.      WAIVER OF JURY TRIAL.................................................79

         22.1     Forum Selection and Consent to Jurisdiction.................79

         22.2     Waiver of Jury Trial........................................80

ANNEX A    Applicable Margin..................................................83

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                AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT

         THIS AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT (this
"Agreement"), dated as of August 31, 2000, is entered into among "Agent",
"Lenders" and "Borrowers" (hereinafter defined).

                                R E C I T A L S:
                                 ---------------

         A.       Borrowers and LaSalle are parties to a Loan and Security
Agreement dated as of October 13, 1998, as amended and supplemented from time to
time (collectively, the "Prior Agreements"), pursuant to which LaSalle has made
revolving and term loans to Borrowers and Borrowers granted to LaSalle a lien on
all of their personal property.

         B.       Borrowers have requested (i) a syndicated facility in the
aggregate principal amount not to exceed $45,000,000, (ii) LaSalle increase the
amount of its revolving loans to Borrowers, (iii) LaSalle be appointed as agent
for Lenders, and (iv) in connection with the foregoing, the parties amend and
restate in their entirety the Prior Agreements.

         C.       LaSalle is willing to provide a portion of such facility in
the aggregate principal amount not to exceed $30,000,000 and to be appointed as
agent for itself and for any additional Lenders.

         D.       Agent and Lenders are willing to make the accommodations
requested by Borrowers and to amend and restate the Prior Agreements in their
entirety, upon the terms and conditions set forth in this Agreement.

         NOW, THEREFORE, in consideration of the parties' mutual agreements
contained herein, the parties hereto agree as follows:

1.       DEFINITIONS

1.1      General Terms.  As used in this Agreement, the following terms shall
have the following definitions:

"Account Debtor" shall mean the Person who is obligated to the Borrowers on or
under an Account.

"Accounts" shall mean all of Borrowers' presently existing and hereafter arising
accounts, accounts receivable, contract rights, instruments, documents, chattel
paper, and all other forms of obligations owing to Borrowers arising out of the
sale or lease of goods or the rendition of services by Borrowers, whether or not
earned by performance, and any and all credit insurance, guarantees, letters of
credit and other security therefor, as well as all merchandise returned to or
reclaimed by Borrowers, and all products and proceeds of the foregoing.

"Acquisition" means any transaction or series of related transactions for the
purpose of or resulting, directly or indirectly, in (i) the acquisition of all
or substantially all of the assets of Person, (ii) the acquisition of in excess
of 50% of the capital stock, partnership interest, membership interest or equity
of any Person, or otherwise causing any Person to become a Subsidiary, or (iii)
a merger or consolidation or any other combination with any other Person,
provided that the applicable Borrower is the surviving entity.

<PAGE>

"Affiliate" shall mean (i) any shareholder of any Borrower, (ii) any corporation
or any other Person that directly or indirectly, through one or more
intermediaries, controls or is controlled by or is under common control with any
Borrower or (iii) any officer, director, trustee, partner or shareholder of any
corporation or any other Person that directly or indirectly, through one or more
intermediaries, controls or is controlled by or is under common control with any
Borrower. A Person shall be deemed to be "controlled by" any other Person if
such Person possesses, directly or indirectly, power to vote 10% or more of the
securities (on a fully diluted basis) having ordinary voting power for the
election of directors or managers or power to direct or cause the direction of
the management and policies of such Person whether by contract or otherwise.

"Agent" shall mean LaSalle Bank National Association in its separate capacity as
agent for Lenders.

"Aging Reports" means those reports prepared by Borrowers listing Borrowers'
Account balances (and the number of days each such Account balance is
outstanding) as well as their accounts payable (and the number of days each such
payable is outstanding), all as of the last day of each month, which balances
Borrower shall represent and warrant as being calculated in accordance with
Generally Accepted Accounting Principles (including a reasonable provision for
uncollectibility) and which shall be presented in an aging format acceptable to
the Agent and shall include the status of all disputes, lawsuits, and delinquent
Accounts over $100,000.

"Agreement" shall mean this Amended and Restated Loan and Security Agreement,
any and all exhibits or schedules thereto, any and all concurrent or subsequent
riders to this Amended and Restated Loan and Security Agreement and any
extensions, supplements, amendments, modifications or restatements to or of this
Amended and Restated Loan and Security Agreement and/or to or of any such rider.

"Applicable Lending Office" shall mean for Agent and each Lender and for each
loan or extension of credit hereunder, the lending office of the Agent or Lender
designated on the signature pages hereof or such other office of such Lender as
such Lender may from time to time specify to the Agent and Borrowers in writing
as the office by which its Loans are to be made and maintained.

"Applicable Margin" means an incremental amount in excess of the Libor Rate or
the Reference Rate, as applicable, as set forth on Annex A attached hereto,
which will fluctuate as a function of the Interest Coverage Ratio pursuant to
Section 2.10(a) below and said Annex A.

"Asset Sale" means the sale, lease, assignment or other transfer for value (each
a "Disposition") by the Borrowers or any Subsidiary to any Person (other than
the Borrowers or any Subsidiary) of any asset or right of the Borrowers or such
Subsidiary other than (a) the Disposition of any asset which is to be replaced,
and is-in fact replaced, within one hundred-eighty (180) days with another asset
performing the same or a similar function, (b) the sale or lease of inventory in
the ordinary course of business, and (c) other Dispositions in any Fiscal Year
the Net Proceeds of which do not in the aggregate exceed $250,000.

"Assignment Agreement" see Section 2.26(b).

"Authorized Representative" shall mean an officer, director, employee or other
Person designated by Borrowers to execute this Agreement and/or any Loan
Document.

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"Benefit Plan" shall mean an employee pension benefit plan of any Borrower or an
ERISA Affiliate, as defined in Section 3(2) of ERISA, which is subject to Title
IV of ERISA.

"Borrowers" shall mean Westell Technologies, Inc., a Delaware corporation,
Westell, Inc., a Delaware corporation, Westell International, Inc., a Delaware
corporation, Conference Plus, Inc., an Illinois corporation, and Teltrend, Inc.,
an Illinois corporation.

"Borrowers' Books" shall mean all of Borrowers' books and records including, but
not limited to: correspondence, writings, minute books; ledgers; records
indicating, summarizing, or evidencing Borrowers' assets, liabilities, the
Accounts and all information relating thereto; records indicating, summarizing,
or evidencing Borrowers' business operations or financial condition; and all
computer programs, disc or tape files, printouts, runs, and other computer
prepared information and the equipment containing such information and any
software necessary to operate the same.

"Borrowers' Loan Account" shall mean a loan account maintained by Agent on its
books in which shall be recorded (i) all loans and advances made by Lenders to
Borrowers pursuant to this Agreement, (ii) all payments made by Borrowers on all
such loans and advances, and (iii) all other appropriate debits and credits as
provided in this Agreement, including, without limitation, all Out-of-Pocket
Fees and Costs and interest; all such entries shall be made by Agent in
accordance with Agent's customary accounting practices as in effect from time to
time.

"Borrowing Base" means, as at any date the amount thereof is determined, the sum
of: (a) 85% of the face value of the Eligible Accounts, less unapplied cash; and
(b) the lesser of (i) 30% of the value of the Eligible Inventory, and (ii)
$9,000,000, less the undrawn face amount of any Letters of Credit outstanding;
unreimbursed draws with respect to Letters of Credit, and the aggregate
outstanding amount of Borrowers' exposure under Permitted Swap Obligations as
determined by Agent.

"Borrowing Base Certificate" means those reports prepared by Borrowers
calculating the Borrowing Base in the form attached hereto as Exhibit A.

"Business Day" shall mean any day on which LaSalle, is open for commercial
banking business in Chicago, Illinois, and in the case of a Business Day which
relates to a Eurodollar Loan, on which dealings are carried on in the London
Interbank eurodollar market.

"Capital Expenditures" means all expenditures which, in accordance with
Generally Accepted Accounting Principles, would be required to be capitalized
and shown on the consolidated balance sheet of the Borrowers, but excluding
expenditures made in connection with the replacement, substitution or
restoration of assets to the extent financed (i) from insurance proceeds (or
other similar recoveries) paid on account of the loss of or damage to the assets
being replaced or restored, or (ii) with awards of compensation arising from the
taking by eminent domain or condemnation of the assets being replaced.

"Capital Lease" means, with respect to any Person, any lease of (or other
agreement conveying the right to use) any real or personal property by such
Person that, in conformity with Generally Accepted Accounting Principles, is
accounted for as a capital lease on the balance sheet of such Person.

"Cash Equivalent Investment" means, at any time, (a) any evidence of
Indebtedness, maturing not more than one year after such time, issued or
guaranteed by the United States Government or any agency thereof, (b) commercial
paper, maturing not more than one year from the date of

                                      -10-
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issue, or corporate demand notes, in each case (unless issued by a Lender or its
holding company) rated at least A-1 by Standard & Poor's Ratings Group or P-1 by
Moody's Investors Service, Inc., (c) any certificate of deposit (or time
deposits represented by such certificates of deposit) or banker's acceptance,
maturing not more than one year after such time, or overnight Federal Funds
transactions that are issued or sold by any Lender or its holding company or by
a commercial banking institution that is a member of the Federal Reserve System
and has a combined capital and surplus and undivided profits of not less than
$500,000,000 and (d) any repurchase agreement entered into with any Lender (or
other commercial banking institution of the stature referred to in clause (c))
which (i) is secured by a fully perfected security interest in any obligation of
the type described in any of clauses (a) through (c) and (ii) has a market value
at the time such repurchase agreement is entered into of not less than 100% of
the repurchase obligation of such Lender (or other commercial banking
institution) thereunder.

"CERCLA" shall mean Comprehensive Environmental Response, Compensation and
Liability Act of 1980.

"Change of Control" shall mean a change in the direct or indirect power to
direct or cause the direction of the management and policies of a Person,
whether through the ownership of voting stock, by transfer of interests in any
partnership, by transfer of interests in any partnership which is an owner of
voting stock, by contract or otherwise.

"Closing" shall have the meaning set forth in Section 5.1 hereof.

"Code" shall mean the Uniform Commercial Code of the State of Illinois as in
effect from time to time during the Initial Term and any renewal term hereof and
any and all terms used in this Agreement which are not otherwise defined herein
but are defined in the Code shall be construed and defined in accordance with
the meaning and definition ascribed to such terms under the Code.

"Collateral" shall mean each and all of the following wherever located and
whether now existing or owned or hereafter created or acquired: the Accounts;
the General Intangibles; the Negotiable Collateral; the Inventory; Borrowers'
Books; the Equipment; the Fixtures; the Investment Property; the Intercompany
Notes, any money, deposit accounts or other assets of Borrowers in which Agent
receives a Lien or which hereafter comes into the possession, custody or control
of Agent, Lenders or any bailee of Agent or Lenders; and all products and
proceeds of every nature of any of the foregoing, including, but not limited to,
proceeds of insurance covering the Collateral and any and all Accounts, General
Intangibles, Negotiable Collateral, Inventory, contract rights, instruments,
documents and chattel paper, Equipment, money, deposit accounts or other
tangible and intangible property of Borrowers resulting from the sale or other
disposition of the Collateral, and the proceeds and products thereof.

"Commitment" means, as to any Lender, such Lender's commitment to make Loans,
and to issue or participate in Letters of Credit, under this Agreement. The
initial amount of each Lender's Pro Rata Share of the Revolving Loan Commitment
is set forth on Schedule 2.1.

"Commitments" shall mean collectively the Revolving Loan Commitments.

"Contributing Sponsor" shall mean any person described in Section 4001(a)(13) of
ERISA with respect to a Benefit Plan.

"Controlled Group" means all members of a controlled group of corporations and
all members of a controlled group of trades or businesses (whether or not
incorporated) under common control

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which, together with the Borrowers, are treated as a single employer under
Section 414 of the Code or Section 4001 of ERISA.

"CPI" means Conference Plus, Inc., an Illinois corporation.

"CPI Stock Option Plan" means the plan adopted on November 3, 1998 authorizing
the granting by CPI to key employees of up to 6,500 options to purchase CPI's
common stock, and shall include all agreements entered into in connection with
the granting of any such option."

"Default Rate" shall have the meaning set forth in Section 2.10(b) hereof.

"EBITDA" means, as to Borrowers for any measurement period, the sum of (i) Net
Income for that measurement period, (ii) Interest Expense of Borrowers for that
measurement period, (iii) depreciation and amortization expenses of Borrower for
that measurement period, (iv) income taxes paid or provided for by Borrowers for
that measurement period, and (v) any extraordinary, unusual or non-recurring
losses, all determined in accordance with Generally Accepted Accounting
Principles consistently applied.

"Effective Date" shall mean the date on which the conditions precedent for
initial loans under Section 5 hereof have been satisfied and the initial
Revolving Loans have been made.

"Eligible Accounts" means such Accounts of Borrowers, payable in fully
transferable U.S. Dollars (unless otherwise provided on Schedule 1), arising in
the ordinary course of Borrowers' business which are subject to the Agent's
first-priority perfected security interest and no other Lien, encumbrance or
security interest other than Permitted Liens and which are evidenced by an
invoice. In addition, no Account shall be an Eligible Account, if: (i) it arises
out of a sale made by any Borrower to an Affiliate of such Borrower or to a
Person controlled by an Affiliate of such Borrower or a sale by one division of
any Borrower to another one of its divisions; (ii) such Account is unpaid more
than ninety (90) days after the original invoice date or more than sixty (60)
days from its due date; (iii) 25% or more of the Accounts from the Account
Debtor are not deemed Eligible Accounts hereunder; (iv) any covenant,
representation or warranty contained in this Agreement with respect to such
Account has been materially breached; (v) the Account Debtor is also any
Borrowers' creditor or supplier, or the Account Debtor has disputed its
liability with respect to such Account, or the Account Debtor has made any claim
with respect to any other Account due from such Account Debtor to any Borrower,
or the Account Debtor has filed a lawsuit against any Borrower; (vi) the Account
Debtor has commenced a voluntary case under the federal bankruptcy laws, as now
constituted or hereafter amended, or made an assignment for the benefit of
creditors, or a decree or order for relief has been entered by a court having
jurisdiction in the premises in respect of the Account Debtor in an involuntary
case under the federal bankruptcy laws, as now constituted or hereafter amended,
or any other petition or other application for relief under the federal
bankruptcy laws has been filed against the Account Debtor, or if the Account
Debtor has failed, suspended business, ceased to be solvent, or consented to or
suffered a receiver, trustee, liquidator or custodian to be appointed for it or
for all or a significant portion of its assets or affairs; (vii) the sale is to
an Account Debtor outside the continental United States, unless the sale is on
letter of credit, guaranty or acceptance terms, in each case (other than with
respect to a Letter of Credit issued by LaSalle at Borrowers' request)
acceptable to the Agent in its sole discretion, except with respect to those
Account Debtors set forth on Schedule 1 attached hereto; (viii) the sale to the
Account Debtor is on a bill-and-hold, guaranteed sale, sale-and-return, sale on
approval, or any other repurchase or return basis or is evidenced by chattel
paper; (ix) the Account Debtor is the United States of America or any
department, agency or instrumentality thereof, unless the applicable Borrower
has assigned its right to payment of such Account to the Agent pursuant to the
Assignment of Claims Act of

                                      -12-
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1940, as amended (31 U.S.C. Sub-Section 203 et seq.); (x) the goods giving rise
to such Account have not been shipped and delivered to and accepted by the
Account Debtor or the Account otherwise does not represent a final sale; (xi) to
the knowledge of Borrowers, the Account is subject to any offset, deduction,
defense, dispute, or counterclaim, or if the Account is contingent in any
respect or for any reason; (xii) it is not an Account Receivable with respect to
an Account Debtor that is located in any jurisdiction which has adopted a
statute or other requirement with respect to which any Person that obtains
business from within such jurisdiction must file a notice of business activities
report or make any other required filings in a timely manner in order to enforce
its claims in such jurisdiction's courts unless such notice of business
activities report has been duly and timely filed or the applicable Borrower is
exempt from filing such report and has provided the Agent with satisfactory
evidence of such exemption; (xiii) any Borrower has made any agreement with any
Account Debtor for any deduction therefrom, except for discounts or allowances
made in the ordinary course of business for prompt payment, all of which
discounts or allowances are reflected in the calculation of the face value of
each respective invoice related thereto; (xiv) the Accounts of the Account
Debtor exceed a reasonable credit limit determined by the Agent in its sole
discretion after consideration of the history of the applicable Account Debtor,
to the extent such Accounts exceed such limit. An Account which is at any time
an Eligible Account, but which subsequently fails to meet any of the foregoing
requirements, shall forthwith cease to be an Eligible Account. Further, with
respect to any Account, if the Agent or the Majority Lenders at any time
hereafter determine in their commercially reasonable discretion that the
prospect of payment or performance by the Account Debtor with respect thereto is
materially impaired for any reason whatsoever, such Account shall cease to be an
Eligible Account after notice of such determination is given to the Borrowers.
The foregoing notwithstanding, Agent reserves the right to modify the criteria
for "Eligible Accounts" after the occurrence of an Event of Default.

"Eligible Inventory" means Inventory of the Borrowers which meets each of the
following requirements:

         1.       it consists of raw materials and finished goods, but does not
include work-in-process, sub-assemblies, consigned Inventory and accounting
reserves;

         2.       it (a) is subject to a perfected Lien in favor of the Agent,
and (b) is not subject to any other assignment, claim or lien;

         3.       it is salable;

         4.       it is in the possession and control of the Borrowers and it is
stored and held in facilities owned by the Borrowers or, if such facilities are
not so owned, the Agent is in possession of a bailee agreement or other
agreement granting access with respect thereto;

         5.       it is not Inventory produced in violation of the Fair Labor
Standards Act and subject to the "hot goods" provisions contained in Title 29
U.S.C.ss.215;

         6.       it is not subject to any agreement which would restrict the
Agent's ability to sell or otherwise dispose of such Inventory;

         7.       it is located in the United States or in any territory or
possession of the United States that has adopted Article 9 of the Uniform
Commercial Code;

                                      -13-
<PAGE>

         8.       it is not "in transit" to the Borrowers or held by the
Borrowers on consignment; and

         9.       the Agent shall not have determined in its commercially
reasonable discretion that it is unacceptable due to age, type, category;
quality, quantity and/or any other reason whatsoever.

Inventory which is at any time Eligible Inventory but which subsequently fails
to meet any of the foregoing requirements shall forthwith cease to be Eligible
Inventory. The foregoing notwithstanding Agent reserves the right to modify the
criteria for "Eligible Inventory" after the occurrence of an Event of Default.

"Environmental Laws" shall mean any applicable laws, statutes, rules,
regulations, orders, consent decrees, permits or licenses of any governmental
authority, relating to prevention, remediation, reduction or control of
pollution, or protection of the environment, natural resources and/or human
health and safety, including, without limitation, such applicable laws,
statutes, rules, regulations, orders, consent decrees, permits or licenses
relating to (a) solid waste and/or Hazardous Materials treatment, storage,
disposal, general and transactions, (b) air, water, and noise pollution, (c)
soil, ground, water or groundwater contamination, (d) the generation, handling,
storage, transportation or Release into the environment of Hazardous Materials,
and (e) regulation of underground and above ground storage tanks.

"Environmental Claims" means all claims, however asserted, by any governmental,
regulatory or judicial authority or other Person alleging potential liability or
responsibility for violation of any Environmental Law.

"Environmental Matters" means any matter arising out of or relating to health
and safety, or pollution or protection of the environment or workplace,
including any of the foregoing relating to the presence, use, production,
generation, handling, transport, treatment, storage, disposal, distribution,
discharge, release, control or cleanup of any Hazardous Materials.

"Equipment" shall mean the machinery, apparatus and equipment of Borrowers,
including without limitation processing equipment, data processing and computer
equipment with software and peripheral equipment, and all engineering,
processing and manufacturing equipment, office machinery, furniture, materials
handling equipment, tools, molds, dies, attachments, accessories, automotive
equipment, trailers, trucks, tractors, motor vehicles, vessels, aircraft and
rolling stock; and other equipment of every kind and nature, and trade fixtures
and fixtures, and other tangible personal property (other than Inventory) of
every kind and description used in Borrowers' business or owned by any Borrower
or in which any Borrower has an interest, all whether now owned or hereafter
acquired, and wheresoever situated, together with all additions and accessions
thereto, substitutions and replacements therefor, all parts therefor, and all
manuals, drawings, instructions, warranties, and rights with respect thereto,
and all products and proceeds of the foregoing, and condemnation awards and
insurance proceeds with respect thereto.

"ERISA" shall mean the Employee Retirement Income Security Act of 1974, as
amended, and all references to sections thereof shall include such sections and
any predecessor and successor provisions thereto.

"ERISA Affiliate" shall mean each trade or business (whether or not
incorporated) which, together with Borrower, would be treated as a single
employer under Section 4001(a)(14) of ERISA or IRC Section 414(b), (c), (m), (n)
or (o), as applicable.

                                      -14-
<PAGE>

"Eurodollar Loan" shall mean any Loan with respect to which the Borrowers shall
have selected an interest rate based on the Libor Rate in accordance with the
provisions of Section 2.2(a) of this Agreement; provided, however, that there
shall not be in excess of five (5) Eurodollar Loans outstanding at any one time.

"Eurodollar Office" means with respect to any Lender the office or offices of
such Lender which shall be making or maintaining the Eurodollar Loans of such
Lender hereunder. A Eurodollar Office of any Lender may be, at the option of
such Lender, either a domestic or foreign office.

"Event of Default" shall mean the occurrence of any one or more of the events
set forth in Section 12 of this Agreement.

"Fair Value" shall mean Borrowers' assets and liabilities as determined in
accordance with Generally Accepted Accounting Principles, except that assets
shall be reflected at present fair saleable value and liabilities shall reflect
a complete statement of liabilities, fixed or contingent, direct or indirect,
disputed or undisputed, whether or not required to be reflected on a balance
sheet prepared in accordance with Generally Accepted Accounting Principles.

"Federal Funds Rate" means, for any day, the rate set forth in the weekly
statistical release designated as H.15(519), or any successor publication,
published by the Federal Reserve Bank of New York (including any such successor
publication, "H.15(519)") on the preceding Business Day opposite the caption
"Federal Funds (Effective)"; or, if for any relevant day such rate is not so
published on any such preceding Business Day, the rate for such day will be the
arithmetic mean as determined by the Agent of the rates for the last transaction
in overnight Federal funds arranged prior to 9:00 A.M. (New York City time) on
that day by each of three leading brokers of Federal funds transactions in New
York City selected by the Agent.

"Fiscal Quarter" means a fiscal quarter of a Fiscal Year.

"Fiscal Year" shall mean with respect to Borrowers, the fiscal year of Borrowers
ending on March 31 of each year.

"Fixtures" shall have the same meaning assigned to that term in the version of
the Uniform Commercial Code currently in effect in the State of Illinois,
including all accessions, parts and appurtenances thereto and all substitutions
or replacements thereof, wheresoever located and whether now or hereafter owned,
acquired, arising or existing.

"General Intangibles" shall mean all of the Borrowers' present and future
general intangibles, contract rights and other personal property rights of
Borrowers to all choses or things in action, tax refund claims, credits, claims,
demands, goodwill, licenses, franchise agreements, subscription costs, patents,
trade names, trademarks, copyrights, rights to royalties, blueprints, drawings,
customer lists, purchase orders, computer programs, computer discs, computer
tapes, literature, reports, catalogs, methods, sales literature, video tapes,
confidential information and trade secrets, consulting agreements, employment
agreements, leasehold interests in real and personal property, insurance
policies, deposits with insurers relating to workmen's compensation liabilities,
deposit accounts, tax refunds and proprietary rights in any equipment, other
than Equipment, Inventory and Accounts, and all other intangible property of any
kind and nature, as well as Borrowers' Books relating to any of the foregoing,
and all products and proceeds of the foregoing.

"Generally Accented Accounting Principles" shall mean, with respect to any date
of determination, generally accepted accounting principles as used by the
Financial Accounting

                                      -15-
<PAGE>

Standards Board and/or the American Institute of Certified Public Accountants
consistently applied and maintained throughout the periods indicated.

"Hazardous Materials" shall mean any flammable or explosive materials, petroleum
(including crude oil and its fractions), radioactive materials, hazardous
wastes, toxic substances or related hazardous materials, including without
limitation polychlorinated biphenyls, friable asbestos, and any substances
defined as, or included in the definition of toxic or hazardous substances,
wastes, or materials under any Environmental Laws.

"Indebtedness" shall mean, with respect to any Person, (a) indebtedness for
borrowed money or for the deferred purchase price of property or services in
respect of which such Person is liable, contingently or otherwise, as obligor or
otherwise, including without limitation accounts payable and accrued
indebtedness owed by such Person or any commitment by which such Person assures
a creditor against loss, including contingent reimbursement obligations with
respect to letters of credit, (b) indebtedness guaranteed in any manner by such
Person, including guarantees in the form of an agreement to repurchase or
reimburse, (c) obligations under leases which shall have been or should be, in
accordance with Generally Accepted Accounting Principles, recorded as Capital
Leases, in respect of which obligations such Person is liable, contingently or
otherwise, as obligor, guarantor or otherwise, or in respect of which
obligations such Person assures a creditor against loss, (d) any unfunded
obligation of such Person to any Benefit Plan or Multi-employer Plan, (e) any
Permitted Swap Obligation of such Person, and (f) all Suretyship Liabilities of
such Person.

"Initial Term" shall have the meaning set forth in Section 3.1 hereof.

"Intercompany Notes" shall mean the promissory notes now or hereafter existing
evidencing the intercompany indebtedness of the Borrowers, Westell Canada, Ltd.,
Westell Worldwide, Inc., or Westell Ltd., which are set forth on Schedule 2
attached hereto.

"Interest Coverage Ratio" shall mean, with respect to any measurement period,
the ratio of (i) Borrowers' EBITDA for any measurement period, to (ii) the
amount of all Interest Expense due and payable for such measurement period on
all Indebtedness, tested for the calendar quarter then ended plus the three (3)
immediately preceding calendar quarters.

"Interest Expense" shall mean, for any period, for the Borrowers and determined
in accordance with Generally Accepted Accounting Principles, (i) gross Interest
Expense for the period (including that portion of capital leases attributable to
Interest), plus (ii) any payments made under interest rate Swap Contracts to the
extent not included in gross Interest Expense, less (iii) the sum of any
payments received under interest rate Swap Contracts.

"Interest Payment Date" shall mean the last day of any Interest Period.

"Interest Period" shall mean: (i) as to any Eurodollar Loan, the period
commencing on the date of such Eurodollar Loan 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, or 3 months thereafter, or with respect
to any Interest Period of 6 months duration, ending on the three month and the
six month anniversaries of the first day of such Interest Period, as the
Borrowers may elect, and (ii) as to any Reference Rate Loan, the period
commencing on the date of such Reference Rate Loan and ending on the earlier of
(A) the last Business Day of each calendar quarter, and (B) the expiration or
earlier termination of this Agreement; provided, however, that (i) if any
Interest Period would end on a day that shall not be a Business Day, such
Interest Period shall be extended to the next succeeding Business Day unless,
with respect to Eurodollar

                                      -16-
<PAGE>

Loans only, such next succeeding Business Day would fall in the next calendar
month, in which case such Interest Period shall end on the immediately preceding
Business Day, (ii) no Interest Period with respect to any Revolving Loan shall
end later than the expiration of the term of this Agreement, and (iii) interest
shall accrue from and including the first day of an Interest Period to and
including the last day of such Interest Period.

"Inventory" shall mean all present and future inventory in which any Borrower
has any interest, including, but not limited to, finished goods intended for
sale or lease by Borrowers, or to be furnished under a contract of service, or
for display or demonstration; all work in process, all raw materials and other
materials and supplies of every nature and description used or which might be
used in connection with the packing, shipping, advertising, selling, leasing or
furnishing or such goods or otherwise used or consumed in any Borrower's
business, or any inventory which has been returned or repossessed or stopped in
transit, wherever located, and any documents of title representing any of the
above.

"Inventory Reports" means those reports prepared by Borrowers listing Borrowers'
Eligible Inventory balances as of the last day of each month, which balances
Borrowers shall represent and warrant as being calculated in accordance with
Generally Accepted Accounting Principles (other than normal year-end
adjustments) and which shall be presented in a format acceptable to Agent.

"Investment" means, relative to any Person, any investment in another Person,
whether by acquisition of any debt or equity security, by making any loan or
advance or by becoming obligated with respect to a Suretyship Liability in
respect of obligations of such other Person (other than travel and similar
advances to employees in the ordinary course of business).

"Investment Property" shall have the meaning assigned to such term in Section
9-115 of the Code.

"IRC" shall mean the Internal Revenue Code of 1986; as amended, and all
references to sections thereof shall include such sections and any predecessor
and successor provisions thereto.

"Issuing Bank" means LaSalle in its capacity as the issuer of Letters of Credit
hereunder and its successors and assigns in such capacity.

"Judicial Officer or Assignee" shall mean any trustee, receiver, controller,
custodian, assignee for the benefit of creditors or any other Person or entity
having powers or duties like or similar to the powers and duties of a trustee,
receiver, controller, custodian, or assignee for the benefit of creditors.

"LaSalle" shall mean LaSalle Bank National Association, a national banking
association, located at 135 South LaSalle Street, Chicago, Illinois 60603.

"Lender" shall mean the individual reference to any of the financial
institutions from time to time party to this Agreement.

"Lenders" shall mean collectively, the financial institutions from time to time
party to this Agreement.

"Letters of Credit" shall mean any standby or trade letters of credit which are
now or hereafter at any time issued by LaSalle at the request of and for the
account of Borrowers pursuant to the terms of this Agreement and which have not
expired or been canceled or terminated.

                                      -17-
<PAGE>

"Libor" means the London Interbank Offered Rate.

"Libor Rate" shall mean, with respect to any Eurodollar Loan for any Interest
Period, the interest rate per annum equal to the quotient obtained by dividing
(x) the rate of interest determined by Agent to be the average of the rate per
annum at which deposits in U.S. dollars are generally offered in the London
Interbank Bank at 11:00 A.M. London time, two (2) Business Days before the first
day of such Interest Period, as set forth on the Dow Jones Market Page 3750 (or
any successor page), for a period equal to such Interest Period and in the
amount of the applicable Eurodollar Loan, by (y) the difference between one
hundred percent (100%) and any applicable reserve requirements (rounded upward
to the nearest whole multiple of one sixteenth (1/16th) of one percent (1%) per
annum), including, without limitation, any statutory maximum requirement for
Lenders to hold reserves for "Eurocurrency Liabilities" under Regulation D of
the Board of Governors of the Federal Reserve System (or any similar reserves
under any successor regulation or regulations).

"Lien" shall mean, with respect to any Person, any mortgage, deed of trust,
pledge, fixed or floating charge, lien, security interest, or encumbrance or
security arrangement of any nature whatsoever, whether arising by written or
oral agreement or by operation of law, including without limitation any
conditional sale or title retention arrangement and any assignment, deposit
arrangement or lease intended as or having the effect of, security.

"Loan Documents" shall mean all agreements, instruments and documents, including
without limitation security agreements, loan agreements (including without
limitation this Agreement), notes, pledges, affidavits, certificates, powers of
attorney, consents, assignments, landlord and mortgagee waivers, opinions,
collateral assignments, reimbursement agreements, contracts, notices, leases,
financing statements, and all amendments, supplements, restatements and renewals
thereof, and all other written matter, whether heretofore, now or hereafter
executed by or on behalf of Borrowers, or any other Person in connection with
the Obligations or the transactions contemplated hereby (including without
limitation any guarantor of the Obligations), and delivered to Agent or Lenders,
together with all agreements, instruments and documents referred to therein or
contemplated thereby whether heretofore, now or hereafter executed by or on
behalf of Borrower or any such other Persons and delivered to Agent or Lenders,
and all amendments, supplements, restatements and renewals thereof, but not
including any proposal letter, commitment letter or other comparable documents
delivered by Agent prior to the date hereof and not expressly incorporated
herein and made a part hereof.

"Loan(s)" shall mean the collective reference to the Revolving Loans.

"Lockbox" shall have the meaning set forth in Section 2.12 hereof.

"Majority Lenders" shall mean, at any time, while no Obligations are
outstanding, Lenders having at least 67% of the aggregate amount of the
Commitments and, at any time while Obligations are outstanding, Lenders holding
at least 67% of the outstanding aggregate principal amount of the Obligations.

"Mandatory Prepayment Event" - see Section 3.5.

"Master Letter of Credit Agreement" shall mean that certain Master Letter of
Credit Agreement among Borrowers and LaSalle attached hereto in the form of
Exhibit B.

"Material Adverse Effect" means (a) a material adverse change in, or a material
adverse effect upon, the financial condition, operations, assets, business,
properties or prospects of the

                                      -18-
<PAGE>

Borrowers taken as a whole, or (b) a material impairment of the ability of the
Borrowers taken as a whole to perform any of their obligations under any Loan
Document, or (c) a material adverse effect upon any substantial portion of the
Collateral or upon the legality, validity, binding effect or enforceability
against the Borrowers of any Loan Document.

"Maximum Revolving Credit Facility" shall mean $45,000,000.

"Multiemployer Plan" shall mean a plan described in Section 4001(a)(3) of ERISA
which covers employees of Borrowers or any ERISA Affiliate.

"Negotiable Collateral" shall mean a letter of credit, advice of credit,
instrument, money, negotiable document, warehouse receipt, bill of lading,
certificated security, certificate of title, certificate of deposit, chattel
paper, or similar property, and proceeds thereof.

"Net Cash Proceeds" means:

     1. with respect to any Asset Sale the aggregate cash proceeds (including
cash proceeds received by way of deferred payment of principal pursuant to a
note, installment receivable or otherwise, but only as and when received)
received by the Borrowers pursuant to such Asset Sale net of (i) the direct
costs relating to such sale, transfer or other disposition (including sales
commissions and legal, accounting and investment banking fees), (ii) taxes paid
or reasonably estimated by the Borrowers to be payable as a result thereof
(after taking into account any available tax credits or deductions and any tax
sharing arrangements), and (iii) amounts required to be applied to the repayment
of any Indebtedness secured by a Lien on the asset subject to such Asset Sale
(other than the Loans);

     2. with respect to any issuance of equity securities, the aggregate cash
proceeds received by the Borrowers pursuant to such issuance, net of the direct
costs relating to such issuance (including sales and underwriter's commission;
and

     3. with respect to any issuance of Indebtedness, the aggregate cash
proceeds received by the Borrowers pursuant to such issuance, net of the direct
costs of such issuance (including up-front fees and placement fees).

"Net Income" shall mean for a subject period, the Net Income (or loss) of
Borrowers for that period as determined in accordance with Generally Accepted
Accounting Principles, but excluding any gain on the sale of any asset not in
the ordinary course of business, any extraordinary income, and any gains from
discontinued operations.

"Net Worth" shall mean the sum of the total of all assets which, under Generally
Accepted Accounting Principles, would appear as assets on the balance sheet of
the Borrowers, less the total of all liabilities, which, under Generally
Accepted Accounting Principles, would appear as liabilities on the balance sheet
of the Borrowers.

"Notes" shall mean the Revolving Loan Notes.

"Obligations" shall mean each and every promise, agreement, covenant, debt and
all other obligations and indebtedness of the Borrowers to the Agent and Lenders
(and with respect to Permitted Swap Obligations, Lenders' affiliates), their
successors or assigns, whether primary, secondary, contingent, direct, or
indirect, howsoever incurred, created, arising or evidenced,

                                      -19-
<PAGE>

whether presently or hereafter existing, evidenced, arising or becoming due, in
connection with the Loans or under this Agreement, the Notes, any Loan
Documents, any Permitted Swap Obligations or any refinancings, substitutions,
extensions, renewals, replacements and modifications for or of the foregoing,
and further including without limitation all interest, all Out-of-Pocket Fees
and Costs which Borrowers are required to pay or reimburse by this Agreement or
any other Loan Document, or by law.

"Operating Lease" means any lease of (or other agreement conveying the right to
use) any real or personal property by the Borrowers , as lessee, other than any
Capital Lease.

"Out-of-Pocket Fees and Costs" shall have the meaning set forth in Section
2.11(E) hereof.

"PBGC" shall mean the Pension Benefit Guaranty Corporation or any successor
agency.

"Participant" shall mean any Person now or from time to time hereafter
participating with Lenders in any of the Loans and Letters of Credit made or
issued by Lenders to Borrowers pursuant to this Agreement.

"Pension Plan" shall mean a "pension plan" as such term is defined in Section
3(2) of ERISA, which is subject to Title IV of ERISA (other than a Multiemployer
Plan), and to which the Borrowers or any of the Controlled Group may have any
liability, including any liability by reason of having been a substantial
employer within the meaning of Section 4063 of ERISA at any time during the
preceding five years, or by reason of being deemed to be a contributing sponsor
under Section 4069 of ERISA.

"Permitted Liens" shall have the meaning set forth in Section 8.1 hereof.

"Permitted Swap Obligations" means all obligations (contingent or otherwise) of
the Borrowers existing or arising under Swap Contracts, provided that each of
the following criteria is satisfied: (i) such obligations are entered in to by
any Borrower in the ordinary course of business for the purpose of directly
mitigating risks associated with liabilities, commitments or assets held or
reasonably anticipated by any Borrower, or changes in the value of securities
issued by such Borrower in conjunction with a securities repurchase program not
otherwise prohibited hereunder, and not for purposes of speculation; (ii) such
Swap Contracts do not contain (a) any provision exonerating the non-defaulting
party from its obligation to make payments on outstanding transactions to the
defaulting party, or (b) any provisions creating or permitting the declaration
of an event of default, termination event or similar event upon the occurrence
of an Event of Default hereunder (other than an Event of Default under
subsection 12.1) and (iii) such Swap Contracts do not exceed the Revolving Loan
Termination Date, provided that forward contracts do not exceed a term of one
(1) year.

"Person" shall mean any individual, sole proprietorship, partnership, joint
venture, trust, unincorporated organization, association, corporation,
institution, limited liability company, entity or governmental entity, whether
acting in an individual, fiduciary or other capacity.

"Potential Default" shall mean any event which through the passage of time,
service of notice or both, would mature into an Event of Default.

"Prime Rate" means for any day, the rate of interest in effect for such day as
publicly announced from time to time by LaSalle as its prime rate (whether or
not such rate is actually charged by LaSalle). Any change in the Prime Rate
announced by LaSalle shall take effect at the opening of business on the day
specified in the public announcement of such change.

                                      -20-
<PAGE>

"Prohibited Transaction" shall mean any transaction described in Section 406 of
ERISA which is not exempt by reason of Section 408 of ERISA, and any transaction
described in Section 4975(c) of the IRC which is not exempt by reason of
Sections 4975(c)(2) or (d) of the IRC, and which could result in any excise tax,
fine, penalty or other liability being imposed on any Borrower.

"Pro Rata Share" shall mean, with respect to any Lender, a fraction (expressed
as a percentage), the numerator of which shall be the aggregate amount of such
Lender's Commitment and the denominator of which shall be the aggregate
Commitments.

"RCRA" shall mean Resource Conservation and Recovery act.

"Reference Rate" shall mean at any time the greater of (a) the Federal Funds
Rate, plus 0.5%, and (b) the Prime Rate.

"Reference Rate Loan" shall mean any Loan with respect to which Borrowers shall
have selected an interest rate based upon the Reference Rate in accordance with
the provisions of Section 2.3(a) of this Agreement.

"Regulation D" means Regulation D of the Board of Governors under Federal
Reserve System.

"Regulation U" means Regulation U of the Board of Governors under the Federal
Reserve System.

"Release" has the meaning specified in CERCLA including, but not limited to, any
actual or threatened past, present or future releasing, spilling, leaking,
pumping, pouring, emitting, emptying, discharging, seeping, injecting, escaping,
leaching, dumping or disposing, whether intentional or not; and the term
"Disposal" (or "Disposed") has the meaning specified in RCRA; provided that in
the event either CERCLA or RCRA is amended so as to broaden the meaning of any
term defined thereby, such broader meaning shall apply as of the effective date
of such amendment; and provided, further, that to the extent that the laws of a
state wherein any affected property lies establish a meaning for "Release" or
"Disposal" which is broader than is specified in either CERCLA or RCRA, such
broader meaning shall apply.

"Reportable Event" shall mean a reportable event described in Section 4043 of
ERISA or the regulations thereunder, for which the thirty (30) day notice
requirement has not been waived.

"Revolving Loan Commitment" shall mean as to each Lender, the amount set forth
opposite its name on the signature pages hereto under the heading "Revolving
Loan Commitment."

"Revolving Loan Commitment Percentage" shall mean as to any Lender, the
percentage set forth opposite its name on the signature pages hereto under the
heading "Revolving Loan Commitment Percentage".

"Revolving Loan Notes" shall have the meaning set forth in Section 2.1 hereof.

"Revolving Loan Termination Date" shall mean August 31, 2003.

"Revolving Loans" shall have the meaning set forth in Section 2.1 hereof.

"SEC" means the Securities and Exchange Commission or any other governmental
authority succeeding to any of the principal functions thereof.

                                      -21-
<PAGE>

"Subsidiary" shall mean any corporation of which more than twenty-five percent
(25%) of the outstanding capital stock having ordinary voting power to elect a
majority of the board of directors of such corporation (irrespective of whether
at the time stock of any other class or classes of such corporation shall have
or might have voting power by reason of the happening of any contingency) is at
the time, directly or indirectly, owned by any Borrower, or any partnership or
joint venture of which more than twenty-five percent (25%) of the outstanding
equity interests are at the time, directly or indirectly, owned by any Borrower.

"Suretyship Liability" means any agreement, undertaking or arrangement by which
any Person guarantees, endorses or otherwise becomes or is contingently liable
upon (by direct or indirect agreement, contingent or otherwise, to provide funds
for payment, to supply funds to or otherwise to invest in a debtor, or otherwise
to assure a creditor against loss) any indebtedness, obligation or other
liability of any other Person (other than by endorsements of instruments in the
course of collection), or guarantees the payment of dividends or other
distributions upon the shares of any other Person. The amount of any Person's
obligation in respect of any Suretyship Liability shall (subject to any
limitation set forth therein) be deemed to be the principal amount of the debt,
obligation or other liability supported thereby.

"Swap Contract" means any agreement, whether or not in writing, relating to any
transaction that is a rate swap, basis swap, forward rate transaction, forward
exchange contract or strategy, commodity swap, equity or equity index swap,
interest rate option, cap, collar or floor transaction, currency swap, cross
currency rate swap, currency option or any other similar interest rate or
currency hedging transaction (including, the option to enter into any of the
foregoing) or any combination of the foregoing, and, unless the context
otherwise clearly requires, any master agreement relating to or governing all or
any of the foregoing.

"Uncured Default" shall mean an Event of Default which shall be continuing.

"Voting Trust" shall mean the Westell Technologies, Inc., f/k/a Electronic
Information Technologies, Inc., Voting Trust Agreement dated February 23, 1994,
as amended.

         1.2 Accounting Terms. Any accounting terms used in this Agreement which
are not specifically defined herein shall have the meanings customarily given
them in accordance with Generally Accepted Accounting Principles. In the event
that changes in Generally Accepted Accounting Principles shall be mandated by
the Financial Accounting Standards Board and/or the American Institute of
Certified Public Accountants or any similar accounting body of comparable
standing, or shall be recommended by Borrowers' certified public accountants, to
the extent that such changes would modify such accounting terms or the
interpretation or computation thereof as contemplated by this Agreement at the
time of execution hereof, then in such event such changes shall be followed in
defining such accounting terms only after the Borrowers and Agent shall have
agreed to amend this Agreement to reflect the original intent of such terms in
light of such changes, and such terms shall continue to be applied and
interpreted without such change until such agreement.

         1.3 Certain Matters of Construction. The terms "herein" "hereof" and
"hereunder" and other words of similar import refer to this Agreement as a whole
and not to any particular section, paragraph or subdivision. Any pronoun used
shall be deemed to cover all genders. The section titles, table of contents and
list of exhibits appear as a matter of convenience only and shall not affect the
interpretation of this Agreement. All references to statutes and related
regulations shall include any amendments of same and any successor statutes and
regulations.

                                      -22-
<PAGE>

All references to any instruments or agreements, including, without limitation,
references to any of the Loan Documents shall include any and all modifications
or amendments thereto and any and all extensions or renewals thereof. The
Recitals to this Agreement are incorporated into this Agreement in their
entirety and deemed to be a part hereof.

2.       LOANS; LETTERS OF CREDIT; FEES; TERMS OF PAYMENT

         2.1 Revolving Credit Facility. Subject to the terms and provisions of
this Agreement including without limitation, that no Event of Default or
Potential Default has occurred and all other conditions precedent to lending
under Section 5 hereof have been satisfied, upon the request of Borrowers, made
at any time and from time to time until the Revolving Loan Termination Date,
each of the Lenders severally and not jointly agrees to make loans and advances
(hereinafter individually referred to as a "Revolving Loan" and collectively as
"Revolving Loans") to Borrowers, jointly and severally, from time to time in the
amount of each Lender's Revolving Loan Commitment Percentage of the Revolving
Loans requested by Borrowers so long as the aggregate amount of the Revolving
Loans outstanding at any time does not exceed the lesser of the (i) Borrowing
Base and (ii) the Maximum Revolving Credit Facility, minus the sum of the
aggregate undrawn face amount of any Letters of Credit outstanding at such time
and any unreimbursed drawings with respect to Letters of Credit, and in the case
of each Lender, up to but not exceeding each Lender's Revolving Loan Commitment.

The Revolving Loans shall be evidenced by, and repayable in accordance with,
Revolving Loan Notes substantially in the form of Exhibit C ("Revolving Loan
Notes").

         2.2 Borrowing Procedures. Agent shall have received, on or before 12:00
p.m. Chicago time, on the day a Revolving Loan is to be made, if a Reference
Rate Loan, or three (3) Business Days prior to the date a Revolving Loan is to
be made, if a Eurodollar Loan, (i) a written, telephonic, or telecopied request
from Borrowers for a Revolving Loan in a specific amount (and a request in
writing, which shall be delivered to Agent on the same Business Day, executed by
an Authorized Representative of Borrowers), (ii) designation whether the
Revolving Loan is to be a Eurodollar Loan or a Reference Rate Loan, and if such
Revolving Loan is to be a Eurodollar Loan, the Interest Period or Interest
Periods with respect thereto, and (iii) copies of all other documents which the
Borrowers are required to deliver to Agent hereunder. If such request for a
Revolving Loan is received by Agent orally before 12:00 p.m. Chicago time on the
day a Reference Rate Loan is to be made or orally before 12:00 p.m. Chicago time
three (3) Business Days prior to the date a Eurodollar Loan is to be made,
subject to the other terms and conditions of this Agreement, Agent will pay over
the funds received from the Lenders in accordance with the terms of this
Agreement on the applicable day on which such Revolving Loan is to be funded
hereunder with the funds received from the Lenders, subject to any, delays
beyond Agent's reasonable control, provided that Agent shall not be liable for
any damages or liabilities for the failure to so make any Revolving Loan on the
day requested unless such failure was due to Agent's gross negligence or willful
misconduct. If no election as to the type of Revolving Loan is specified in any
such notice by Borrowers, then such Revolving Loan shall be a Reference Rate
Loan. If no Interest Period is specified with respect to a Eurodollar Loan in
such notice, then Borrower shall be deemed to have selected an Interest Period
of one month's duration. Each request for a Reference Rate Loan shall be in a
minimum amount of $100,000 and integral

                                      -23-
<PAGE>

multiples of $100,000 thereafter. Notwithstanding anything contained in this
Agreement to the contrary, Borrowers may not have more than five (5) Eurodollar
Loans outstanding at any one time, and each request for a Eurodollar Loan shall
be in a minimum increment of $1,000,000 and integral multiples of $500,000
thereafter.

                  (a) Upon receipt by Agent of a notice from Borrowers of a
request for a Revolving Loan, Agent shall promptly on the date of receipt,
notify Lenders of the amount, term and proportionate share of such Revolving
Loan to be funded by each Lender. Two (2) Business Days prior to the date
specified for funding of such Eurodollar Loan in the notice from Borrowers
provided under (a) above, Agent shall notify Lenders and Borrowers of the Libor
Rate in effect for such Eurodollar Loan. Each Lender shall make available its
proportionate share of any Revolving Loan, by federal funds wire transfer to
Agent at Agent's Applicable Lending Office, in immediately available funds, by
not later than 1:30 p.m. Chicago time, on the date specified for a Revolving
Loan hereunder as provided in (a) above. The amount of any Revolving Loan shall,
subject to the terms of this Agreement, be made available to Borrowers by
depositing same, in immediately available funds, in an account of Borrowers, as
designated by Borrowers, maintained at Agent's Applicable Lending Office, or by
wiring the same, in immediately available funds, to any account specified by
Borrowers in their notice of borrowing.

                  (b) The failure of any Lender to make any Revolving Loan to be
made by it on any date specified therefor shall not relieve any other Lender of
its obligation to make its Revolving Loan on such date, but neither the Agent
nor any Lender shall be responsible for the failure of any other Lender to make
a Revolving Loan.

         2.3 Payments and Prepayments. Borrowers shall make each payment in
respect of the principal of and interest on the Revolving Loans and any other
payments due under this Agreement not later than 12:00 p.m. Chicago time on the
day when due, in Dollars, to the Agent for the account of each Lender at the
Agent's Applicable Lending office in Chicago, Illinois in immediately available
funds.

                  (a) Any Lender for whose account any such payment is to be
made may (but shall not be obligated to) debit the amount of any such payment
which is not made by such time to any ordinary deposit account of Borrowers with
such Lender and shall give notice thereof to the Agent and Borrowers, provided
the failure to give such notice does not affect the validity of such debit.

                  (b) Borrowers shall, at the time of making such payment under
this Agreement or any Revolving Loan Note, specify to the Agent the Revolving
Loans or other amounts payable by Borrowers hereunder to which such payment is
to be applied (and in the event that it fails to so specify, or if an Event of
Default has occurred and is an Uncured Default, the Agent shall distribute such
payment to the Lenders in such manner as Agent may determine to be appropriate,
subject to Section 2.4 hereof).

                  (c) Each payment received by the Agent under this Agreement,
or any Revolving Loan Note, for account of a Lender shall be paid promptly to
such Lender on the same Business Day of receipt by Agent if received by 12:00
p.m. Chicago time, or otherwise on the

                                      -24-
<PAGE>

next successive Business Day, at the Applicable Lending Office for the Revolving
Loan or other obligation in respect of which such payment is made.

                  (d) Subject to Sections 3.5 and 2.20 of this Agreement and
except as otherwise provided herein, any prepayment of the Obligations by
Borrowers shall be without premium or penalty.

         2.4 Pro Rata Treatment. Except to the extent otherwise provided herein:
(i) each borrowing from the Lenders, and each payment of any fee under Section
2.11 hereof, shall be made for the account of the Lenders, according to their
respective Pro Rata Shares; (ii) each payment of principal of the Loans by
Borrowers shall be made for the account of the Lenders pro rata in accordance
with the respective unpaid principal amounts of the Loans held by the Lenders;
and (iii) each payment of interest by Borrowers shall be made for account of the
Lenders pro rata in accordance with the amounts of interest due and payable to
the respective Lenders.

         2.5 Funding Reliance.

                  (a) Unless the Agent receives notice from a Lender by one
p.m., Chicago time, on the day of a proposed borrowing that such Lender will not
make available to the Agent an amount equal to its Pro Rata Share of such
borrowing, the Agent may assume that such Lender has made such amount available
to the Agent and, in reliance upon such assumption, make a corresponding amount
available to the Borrowers. If and to the extent such Lender has not made such
amount available to the Agent, such Lender and the Borrowers jointly and
severally agree to repay such amount to the Agent forthwith on demand, together
with interest thereon at the interest rate applicable to Loans comprising such
borrowing or, in the case of any Lender which repays such amount within three
(3) Business Days, the Federal Funds Rate (together with such other compensatory
amounts as may be required to be paid by such Lender to the Agent pursuant to
the Rules for Interbank Compensation of the Council on International Banking or
the Clearinghouse Compensation Committee, as applicable, as in effect from time
to time). Nothing set forth in this clause (a) shall relieve any Lender of any
obligation it may have to make any Loan hereunder.

                  (b) Unless the Agent receives notice from the Borrowers prior
to the due date for any payment hereunder that the Borrowers do not intend to
make such payment, the Agent may assume that the Borrowers have made such
payment and, in reliance upon such assumption, make available to each Lender its
share of such payment. If and to the extent that the Borrowers have not made any
such payment to the Agent, each Lender which received a share of such payment
shall repay such share (or the relevant portion thereof) to the Agent forthwith
on demand, together with interest thereon at the Reference Rate (or, in the case
of any Lender which repays such amount within three (3) Business Days, the
Federal Funds Rate). Nothing set forth in this clause (b) shall relieve the
Borrowers of any obligation it may have to make any payment hereunder.

         2.6 Sharing of Payments, Etc. Borrowers agree that, in addition to (and
without limitation of) any right of set-off, bankers' lien or counterclaim a
Lender might otherwise have,

                                      -25-
<PAGE>

each Lender shall be entitled, at its option, to offset balances held by it for
the account of Borrowers at any of its offices, against any principal of or
interest on any of such Lender's Loans or any other amount payable to such
Lender hereunder, which is not paid when due subject to any applicable grace
periods (regardless of whether such balances are then due to Borrowers), in
which case it shall promptly notify Borrowers and the Agent thereof, provided
that such Lender's failure to notify shall not affect the validity thereof.

                  (a) If any Lender (i) shall obtain payment of any principal of
or interest on any Loan made by it to Borrowers under this Agreement through the
exercise of any right of set-off, banker's lien or counterclaim or similar right
or otherwise, whether or not under Section 2.6 above, and, as a result of such
payment, such Lender shall have received a greater percentage of the Obligations
with respect to the Loans then due hereunder by Borrowers to such Lender than
the percentage of the Obligations received by the other Lender, or (ii) such
Lender's percentage of the outstanding Obligations relating to Loans is less
than its Pro Rata Share of such Obligations, it shall promptly purchase from
such other Lender participations in (or, if and to the extent specified by such
Lender, direct interests in) the Loans made by such other Lender (or in interest
due thereon or other Obligations with respect to the Loans due to such Lender,
as the case may be) in such amounts, and make such other adjustments from time
to time as shall be equitable, to the end that (x) each Lender shall have made
advances of Obligations relating to Loans according to its Pro Rata Share of its
Commitment of such Obligations, and (y) all of the Lenders shall share the
benefit of such excess-payment (net of any expense which may be incurred by such
Lender in obtaining or preserving such excess payment) pro rata in accordance
with the unpaid Obligations with respect to the Loans due to each of the
Lenders. To such end all the Lenders shall make appropriate adjustments among
themselves (by the resale of participations sold or otherwise) if such payment
is rescinded or must otherwise be restored.

                  (b) Borrowers agree that any Lender so purchasing a
participation (or direct interest) in the Obligations with respect to the Loan's
due to the other Lender (or in interest due thereon, as the case may be) may
exercise all rights of set-off, bankers' lien, counterclaim or similar rights
with respect to such participation as fully as if such Lender were a direct
holder of Loans in the amount of such participation.

                  (c) Nothing contained herein shall require any Lender to
exercise any such right or shall affect the right of any Lender to exercise, and
retain the benefits of exercising, any such right with respect to any other
indebtedness or obligation of Borrowers. If, under any applicable bankruptcy,
insolvency or other similar law, any Lender receives a secured claim in lieu of
a payment or set-off to which this Section 2.6 applies, such Lender shall, to
the extent practicable, exercise its rights in respect of such secured claim in
a manner consistent with the rights of the Lenders entitled under this Section
2.6 to share in the benefits of any recovery on such secured claim.

         2.7 Letters of Credit.

                  (a) Subject to the terms and provisions of this Agreement,
including without limitation, that no Event of Default or Potential Default has
occurred and all other conditions precedent to lending under Section 5 and under
the Master Letter of Credit Agreement have been

                                      -26-
<PAGE>

satisfied, Issuing Bank may, at Borrowers' request and for the account of
Borrowers, issue Letters of Credit; provided, that the aggregate undrawn face
amount of the Letters of Credit plus unreimbursed drawings for Letters of Credit
shall not at any time exceed the lesser of (a) Five Million and No/100 Dollars
($5,000,000) or (b) the amount by which the Borrowing Base at such time (not
reduced for the aggregate undrawn face amount of the Letters of Credit and
unreimbursed drawings for Letters of Credit) exceeds the outstanding principal
balance of the Revolving Loans at such time. The Letters of Credit shall be in
form and substance satisfactory to Agent. No Letter of Credit shall have a term
of more than one year or an expiration date occurring after the Revolving Loan
Termination Date.

                  (b) Borrowers agree to pay to (i) Issuing Bank upon the
opening of a Letter of Credit at Borrowers' request, and thereafter on demand,
Issuing Bank's standard reasonable administrative and operating fees and charges
in effect from time to time for issuing and administering any Letters of Credit,
including, without limitation, a fronting fee in the amount of 0.125% of the
face amount of such Letter of Credit payable upon the issuance of such Letter of
Credit, plus (ii) the Agent, for the ratable benefit of the Lenders in
accordance with their Revolving Loan Commitment Percentages, a fee, payable
quarterly in arrears on the last day of each calendar quarter, on each standby
or trade Letter of Credit accepted by Agent but not yet paid in the amount set
forth on Annex A. Agent may provide for the payment of any fees, charges or
commissions due to Agent by advancing the amount thereof to Borrowers as a
Revolving Loan. Borrowers shall execute Issuing Bank's customary form of
application and related documents pursuant to the Master Letter of Credit
Agreement for each Letter of Credit requested by it, and such applications shall
be received at least three (3) Business Days prior to the requested issue date
of such Letter of Credit together with such other documents in support thereof
as the Issuing Bank may reasonably require.

                  (c) Borrowers agree to reimburse Issuing Bank, within one (1)
Business Day after demand, for each payment made by Issuing Bank under or
pursuant to any Letter of Credit requested by Borrowers. Borrowers further agree
to pay to Issuing Bank, on demand, interest at the Reference Rate Option on any
amount paid by Issuing Bank under or pursuant to any such Letter of Credit from
the due date of payment until the date of reimbursement to Issuing Bank. Agent
shall, upon the request of Borrowers when no Event of Default exists (to the
extent there is additional availability for Revolving Loans but without regard
to the other conditions precedent set forth in Section 5), provide for the
payment of any reimbursement obligations due to Issuing Bank and any interest
accrued thereon by advancing the amount thereof to Borrowers as a Revolving
Loan.

                  (d) Borrowers' obligation to reimburse Issuing Bank for
payments and disbursements made by Issuing Bank under any Letter of Credit
requested by Borrowers shall be absolute and unconditional under any and all
circumstances and irrespective of any setoff, counterclaim or defense to payment
which Borrowers may have or have had against Issuing Bank (or any other Lender),
including, without limitation, any defense based on the failure of the demand
for payment under such Letter of Credit to conform to the terms of such Letter
of Credit, the legality, validity, regularity or enforceability of such Letter
of Credit, or the identity of the transferee of such Letter of Credit or the
sufficiency of any transfer if such Letter of Credit is transferable; provided,
however, that Borrowers shall not be obligated to reimburse Issuing Bank

                                      -27-
<PAGE>

for any wrongful payment or disbursement made under any Letter of Credit as a
result of acts or omissions constituting gross negligence or willful misconduct
on the part of Issuing Bank or any of its officers, employees or agents.

                  (e) Notwithstanding anything to the contrary herein, upon the
occurrence of an Event of Default or upon termination of this Agreement whether
by expiration of the term or otherwise, an amount equal to the aggregate undrawn
face amount of all outstanding Letters of Credit and all unreimbursed draws
under any Letter of Credit shall, at Agent's option and upon written notice to
Borrowers, be deemed (as between Agent and Borrowers) to have been paid or
disbursed by Issuing Bank under the Letters of Credit issued by Issuing Bank
(notwithstanding that such amounts may not in fact have been so paid or
disbursed), and a Revolving Loan to Borrowers in the amount of such aggregate
undrawn face amount of all outstanding Letters of Credit and all unreimbursed
draws under any Letter of Credit to have been made and accepted, which Loan
shall be immediately due and payable. In lieu of the foregoing, at the election
of Agent at any time after an Event of Default, or upon termination of this
Agreement, whether by expiration of the term or otherwise, Borrowers shall, upon
Agent's demand, deliver to Agent cash equal to the aggregate undrawn face amount
of all outstanding Letters of Credit and all unreimbursed draws under any Letter
of Credit. Any such cash and/or any amounts received by Agent in payment of the
Revolving Loan made pursuant to this paragraph shall be delivered to and held by
Agent in a separate account appropriately designated as a cash collateral
account in relation to this Agreement and the Letters of Credit and shall be
retained by Agent as collateral security in respect of, first, such Borrowers'
Obligations under or in connection with the Letters of Credit and then, all
other Obligations. Such amounts shall not be used by Agent to pay any amounts
drawn or paid under or pursuant to any Letter of Credit, but may be applied to
reimburse Issuing Bank for drawings or payments under or pursuant to Letters of
Credit which Issuing Bank has paid, or if no such reimbursement is required, to
payment of such other Obligations as Agent shall determine. Any amounts
remaining in any cash collateral account established pursuant to this paragraph
following payment in full of all Obligations shall be returned to Borrowers.

                  (f) With respect to each Letter of Credit, each Lender (other
than Issuing Bank) hereby agrees to purchase a participation in such Letter of
Credit, effective simultaneously with the issuance thereof, in an amount equal
to such Lender's Pro Rata Share of the amount of such Letter of Credit. For the
purposes of this Agreement, the proportionate interest which Issuing Bank
retains in each Letter of Credit shall be referred to as its "participation" in
such Letter of Credit.

                  (g) If Issuing Bank shall fail to be reimbursed pursuant to
clause (c) of this Section 2.7 by Borrowers (or from the proceeds of a Loan
pursuant to the last sentence of such clause (c)) for any payment or
disbursement under a Letter of Credit, the other Lenders shall, promptly upon
the request of Issuing Bank, provide Agent with immediately available funds for
the account of Issuing Bank in an amount equal to such Lender's Pro Rata Share
of such payment or disbursement. If Agent or Issuing Bank subsequently receives
from Borrowers any reimbursement of such payment or disbursement, Agent or
Issuing Bank, as the case may be, shall promptly remit to each Lender its Pro
Rata Share of such reimbursement, including interest as provided herein.

                                      -28-
<PAGE>

                  (h) The obligation of each Lender to provide Agent with such
Lender's Pro Rata Share of the amount of any payment or disbursement made by
Issuing Bank under any outstanding Letter of Credit shall be absolute and
unconditional under any and all circumstances and irrespective of any setoff,
counterclaim or defense to payment which such Lender may have or have had
against Issuing Bank (or any other Lender), including, without limitation, any
defense based on the failure of the demand for payment under such Letter of
Credit to conform to the terms of such Letter of Credit, the legality, validity,
regularity or enforceability of such Letter of Credit, or the identity of the
transferee of such Letter of Credit or the sufficiency of any transfer if such
Letter of Credit is transferable; provided, however, that the Lenders shall not
be obligated to reimburse Issuing Bank for any wrongful payment or disbursement
made under any Letter of Credit as a result of acts or omissions constituting
gross negligence or willful misconduct on the part of Issuing Bank or any of its
officers, employees or agents.

                  (i) In determining whether to make any payment under or
pursuant to any Letter of Credit, Issuing Bank shall have no obligation to
Borrowers, any Lender or any other Person other than to confirm that any
documents required to be delivered have been delivered and that such documents
comply on their face with the requirements of such Letter of Credit. No other
action taken or omitted by Issuing Bank under or in connection with any Letter
of Credit, if taken or omitted in the absence of gross negligence or willful
misconduct, shall put Issuing Bank under any resulting liability to Borrowers or
any Lender.

                  (j) In the case of any inconsistency between the terms of this
Agreement and the Master Letter of Credit Agreement, the terms of this Agreement
shall govern and control.

         2.8 All Loans One Obligation. All Loans by Lenders to Borrowers under
this Agreement shall constitute Obligations of Borrowers, secured by Agent's
Lien on the Collateral, and by any Lien heretofore, now or at any time or times
hereafter granted by Borrowers to Agent or Lenders hereunder or under any other
Loan Documents.

         2.9 Payment of Over Advances. If, at any time and for any reason, the
outstanding Revolving Loans plus the aggregate undrawn face amount of the
Letters of Credit and any unreimbursed drawings with respect to Letters of
Credit exceed the lesser of (a) the Maximum Revolving Credit Facility or (b)
Borrowing Base (or any of the percentages or sublimits set forth therein) (not
reduced for the aggregate undrawn face amount of the Letters of Credit and any
unreimbursed drawings with respect to Letters of Credit), any such excess shall
immediately be due and payable by Borrowers to Agent, and Borrowers shall, upon
telephonic notice or other Notice from Agent, immediately pay to Agent, in cash,
the amount of such excess, and prior to such repayment such over advances shall
bear interest at the Default Rate.

         2.10 Interest.

                  (a) Rate. All Obligations owed by the Borrowers to Lenders
(except for Eurodollar Loans, or covered by any other-Section of this Agreement
or other agreement which specifically provides for a rate of interest different
from that provided for herein) shall bear interest, on the unpaid principal
balance thereof, at a rate per annum (computed on the basis of

                                      -29-
<PAGE>

the actual number of days elapsed over a 365 day year) (the "Reference Rate
Option") equal to the Reference Rate plus the Applicable Margin, payable on the
applicable Interest Payment Date.

                  Subject to the provisions of Section 2.22 of this Agreement,
each Eurodollar Loan shall bear interest on the unpaid principal balance thereof
at a rate per annum (computed on the basis of the actual number of days elapsed
over a 360-day year) equal to the Libor Rate for the Interest Period in effect
plus the Applicable Margin (the "Eurodollar Rate Option"). Interest on
Eurodollar Loans for 1, 2, 3 and 6-month Interest Periods shall be payable in
arrears on the last day of the applicable Interest Period on the applicable
Interest Payment Date.

                  The rates set forth on Annex A for Level III shall be in
effect from the Closing until Agent is in receipt of Borrowers' compliance
certificate for the fiscal period ending December 31, 2000. Thereafter, interest
shall accrue as set forth in Section 2.27 hereof.

                  In addition to calculations of the Reference Rate Option as
provided above, in the event that the Reference Rate announced is, from time to
time hereafter, changed, adjustment in the Reference Rate Option shall be made
on the effective date of such change in the Reference Rate. The Reference Rate
Option, as adjusted, shall apply to all Obligations (except as provided above
with respect to Eurodollar Loans or where otherwise specifically provided) owed
on the date following the date on which the adjustment is made and shall
continue to apply to such Obligations owed during succeeding months until the
Reference Rate is adjusted again. Agent shall use reasonable efforts to notify
Borrowers of each change in the Reference Rate as soon as practicable, but
Borrowers' obligation to pay all interest at the Reference Rate Option and
Default Rate as provided in this Agreement shall not be affected by, nor shall
Agent have any liability for, any failure to so notify Borrowers.

                  (b) Default Rate. Notwithstanding the foregoing, the Revolving
Loans and any accrued interest and Out-of-Pocket Fees and Costs shall bear
interest, from and after written notice by Agent to Borrowers of the occurrence
of an Event of Default and at the request of the Majority Banks and for so long
as an Event of Default shall be an Uncured Default and without constituting a
waiver of any such Event of Default, on the balances owing from time to time, at
a rate per annum equal to two (2) percentage points above the Reference Rate
Option (the "Default Rate"), payable monthly in arrears on the first day of each
month.

                  (c) Maximum Interest. It is the intention of Agent and
Borrowers to comply with the laws of the State of Illinois, and notwithstanding
any provision to the contrary contained herein or in the other Loan Documents,
Borrowers shall not be required to pay, and Agent shall not be permitted to
collect, any amount in excess of the maximum amount of interest permitted by
applicable law ("Excess Interest"). If any Excess Interest is provided for or
determined to have been provided for by a court of competent jurisdiction in
this Agreement or in any of the other Loan Documents, then in such event (i) the
provisions of this Section shall govern and control; (ii) Borrowers shall not be
obligated to pay any Excess Interest; (iii) any Excess Interest that Agent may
have received hereunder shall be, at Agent's option, (A) applied as a credit
against either the outstanding principal balance of the Loans or accrued and
unpaid interest hereon, (B) refunded to the payor thereof, or (C) any
combination of the foregoing; (iv) the interest rate(s) provided for herein
shall be automatically reduced to the maximum rate allowed under applicable law,
and this Agreement and the other Loan Documents shall be deemed to have been,
and shall be, reformed and modified to reflect such reduction; and (v) Borrowers
shall not have any action against Agent for any damages arising out of the
payment or collection of

                                      -30-
<PAGE>

any Excess Interest. Notwithstanding the foregoing, if any interest payment or
other charge or fee payable hereunder or under any of the other Loan Documents
exceeds the maximum amount then permitted by applicable law, then to the extent
permitted by law, Borrowers shall be obligated to pay the maximum amount then
permitted by applicable law and Borrowers shall continue to pay the maximum
amount from time to time permitted by applicable law until all such interest
payments and other charges and fees otherwise due hereunder or under any of the
other Loan Documents (in the absence of such restraint imposed by applicable
law) have been paid in full.

                  (d) Charges to Loan Account. Agent may, at its option, charge
any interest and fees payable hereunder or under any of the other Loan Documents
to Borrowers' Loan Account, and any amounts so charged shall thereupon
constitute Obligations hereunder and, except for Out-of-Pocket Fees and
Expenses, shall thereafter accrue interest as provided in this Agreement.
Out-of-Pocket Fees and Expenses shall accrue interest as provided in this
Agreement if not paid within thirty (30) days after such costs are billed.

         2.11 Fees. In consideration of Lender's establishing the Maximum
Revolving Credit Facility hereunder and making of the Loans and the Letters of
Credit hereunder, Borrower shall pay to Agent for the benefit of Agent or
Lenders, as applicable, the following fees and charges:

                  (a) Unused Line Fee. An unused line fee for the ratable
benefit of Lenders as provided hereunder of the applicable percentage set forth
on Annex A hereto (computed on the basis of a year of three hundred sixty (360)
days for the actual number of days elapsed) of the amount by which the Maximum
Revolving Credit Facility exceeds the average quarterly balance of the Revolving
Loans plus the average quarterly face amount of outstanding Letters of Credit,
payable quarterly in arrears, on the last day of each quarter commencing
September 30, 2000 and continuing on the last day of each calendar quarter
thereafter.

                  (b) Upfront Fees. The Borrowers agree to pay to the Agent for
the account of each Lender on the Closing Date an upfront fee in the amount
previously agreed to between the Borrowers and the Agent (and the Agent agrees
to promptly forward to each Lender a portion of such upfront fee in the amount
previously agreed to between the Agent and such Lender).

                  (c) Agent's Fees. The Borrowers agree to pay to the Agent such
agent's fees as are mutually agreed to from time to time by the Borrowers and
the Agent.

                  (d) Letter of Credit Fees. Fees in connection with Letter of
Credit as provided in Section 2.7(b) hereof.

                  (e) Out-of-Pocket Fees, Costs and Expenses. All reasonable
out-of-pocket fees, costs and expenses ("Out-of-Pocket Fees and Costs"),
incurred by Agent or Lenders in connection with any matters contemplated by or
arising out of this Agreement, or any other Loan Document, all of which shall be
part of the Obligations, payable on demand, including without limitation the
following: (i) expenses in verifying or inspecting the Accounts of Borrowers or
Borrowers' Books with respect thereto; (ii) any bank charges in connection with
opening and maintaining and transferring funds from any Lockbox and Depository
Account and depositing

                                      -31-
<PAGE>

         funds for collection by Agent on account of the Obligations; (iii) wire
transfer fees, if applicable, in connection with Agent's forwarding to Borrowers
the proceeds of Revolving Loans hereunder; (iv) reasonable photocopying and
other mechanical or electronic reproduction expenses in connection with Agent's
rights of inspection under this Agreement or any other Loan Document or in
connection with any service utilized by Agent to perform such functions; (v) any
costs or expenses incurred by Agent concerning any property of Borrowers
relating to Environmental Laws, including without limitation, for consultants or
engineers; (vi) reasonable expenses in connection with the documentation,
negotiation, closing and ongoing administration of the Revolving Loans
(including any and all amendments or waivers with respect hereto), including
without limitation, title insurance, appraisal and evaluation fees and expenses,
including, after the occurrence of an Event of Default or Potential Default, or
if Agent has reasonable cause to believe there has been a material change in
market conditions or the value of the Collateral, or any other property of
Borrowers, search fees, publication fees, insurance premiums, examination fees,
filing and recording fees, reasonable fees, costs and expenses of Agent for
attorneys and paralegals, and all taxes (other than income taxes of Agent)
payable in connection with this Agreement or any other Loan Document, whether
such expenses and fees are incurred prior to, on or after the date hereof; (vii)
after the occurrence of an Uncured Default, costs and expenses in collecting the
Accounts (with or without suit), to correct any Event of Default or enforce any
provision hereof, or in gaining possession of, maintaining, handling,
evaluating, preserving, storing, shipping, selling, preparing for sale and/or
advertising to sell the Collateral or any other property of Borrowers in which
Agent has a Lien whether or not a sale is consummated; and (viii) the reasonable
fees, costs and expenses for attorneys and paralegals (A) incurred by Agent in
connection with the documentation, negotiation and Closing of the Loans
described herein (including any and all amendments or waivers with respect
thereto at or after the Closing thereof), and any participations therein
(including any and all amendments or waivers with respect thereto) entered into
at or after the Closing of the Loans, and incurred by Agent or Lenders in
connection with the enforcement of Agent's or any Lender's rights hereunder and
under the other Loan Documents, (B) incurred by Agent in connection with
protection, perfection or preservation of the Collateral or the security
interest or Liens of Agent therein in accordance with this Agreement, (C)
incurred by Agent or any Lender in connection with any suit by or involving
Agent, Lenders or any Participant in enforcing or defending this Agreement or
any portion hereof, including without limitation, attorneys' and paralegals'
fees and costs incurred in connection with appellate proceedings in any appeals
court, and (D) incurred by Agent obtaining advice and legal services with
respect to structuring, drafting, negotiating, reviewing, amending, restating,
restructuring, terminating, enforcing, defending or concerning this Agreement,
or any portion hereof or any of the other Loan Documents, whether or not suit is
brought.

         2.12 Lockbox; Crediting Collections. The Borrowers shall continue to
maintain a depository account ("Depository Account") and lock box ("Lockbox")
arrangement acceptable to Agent at LaSalle and, in every invoice issued by
Borrowers, shall direct all Account Debtors to send their payments directly to
the post office box established by the aforesaid Lockbox arrangement. Such
Lockbox and Depository Account arrangements will provide that the Depository
Account shall be pledged to Agent as Collateral. Upon the occurrence of an Event
of Default, Agent may require all Depository Accounts to be in the name of Agent
and under its sole control and direction, and shall apply all proceeds therefrom
to the Obligations. The

                                      -32-
<PAGE>

Borrowers agree that the bank accounts at the Agent shall contain sufficient
funds to make each payment under the Loan Documents when due after applying any
applicable cure periods.

         2.13 Agent Rights to Collect Directly. Agent or Agent's designee may,
after the occurrence of an Event of Default which has been declared by Agent by
notice to Borrower, (i) notify customers or Account Debtors of Borrowers that
the Accounts have been assigned to Agent and that Agent has a Lien thereon, and
(ii) collect the Accounts directly, and charge the collection costs and expenses
to Borrowers' account.

         2.14 Disputes and Allowances. Allowances, if any, as between Borrowers
and their customers, will be on the same basis and in accordance with the usual
customary practices of Borrower, as they exist at this time. Upon the request of
Agent, Borrowers shall promptly notify Agent of all recoveries and promptly
notify Agent of all disputes and claims which involve an Account in excess of
the face amount of $20,000.00 or which involve in excess of $50,000.00
individually and $250,000.00 in the aggregate. After the occurrence of an Event
of Default which shall be an Uncured Default, no discount, credit or allowance
shall be granted by Borrowers to any Account Debtor without Agent's consent
except in the ordinary course of Borrowers' business. Agent may, in its
discretion, after the occurrence of an Event of Default which is an Uncured
Default, settle or adjust disputes and claims directly with Account Debtors for
amounts and upon terms which Agent considers advisable, and in such cases, Agent
will credit Borrowers' account with only the net amounts received by Agent in
payment of such disputed Accounts, after deducting all Out-of-Pocket Fees and
Costs incurred or expended in connection therewith.

         2.15 Monthly Statements. Agent or LaSalle shall render monthly
statements of the Obligations owing by Borrowers to Lenders, including
statements of all principal, interest, and Out-of-Pocket Fees and Costs owing,
and such statements shall be prima facie evidence to be correct and accurate and
constitute an account stated between Borrowers and Lenders unless, within sixty
(60) days after receipt thereof by Borrowers, Borrowers shall deliver to Agent,
by registered or certified mail or by a nationally recognized overnight courier,
at Agent's place of business indicated in Section 1 hereinabove, written
objection thereto specifying the error or errors, if any, contained in any such
statement. Any balance credited to Borrowers' account, less monies remitted,
paid or otherwise advanced by Agent to or for Borrowers' account and any amounts
that Agent may be obligated to pay in the future, and less any other sums due to
Agent or Lenders as provided in this Agreement, shall be remitted to Borrowers
when all Obligations owed by Borrowers to Agent or Lenders have been paid in
full.

         2.16 Recordkeeping. Each Lender shall record in its records, or at its
option on the schedule attached to its Note, the date and amount of each Loan
made by such Lender, each repayment or conversion thereof and, in the case of
each Eurodollar Loan, the dates on which each Interest Period for such Loan
shall begin and end. The aggregate unpaid principal amount so recorded shall be
rebuttable presumptive evidence of the principal amount owing and unpaid on such
Note. The failure to so record any such amount or any error in so recording any
such amount shall not, however, limit or otherwise affect the obligations of the
Borrowers hereunder or under any Note to repay the principal amount of the Loans
evidenced by such Note together with all interest accruing thereon.

                                      -33-
<PAGE>

         2.17 Payment Dates. Any payment due under this Agreement on any day
other than a Business Day shall be due on the next succeeding Business Day, and
such payment shall bear interest in accordance herewith until actually received.

         2.18 Regulations Affecting Loans. If (a) Regulation D or any other
regulation of the Board of Governors of the Federal Reserve System or any other
Federal regulation, or (b) after the date hereof, the adoption of any applicable
law, rule or regulation, or any change, amendment to, deletion from or revision,
modification or other change therein, or any change in the interpretation or
administration thereof by any governmental authority, central bank or comparable
agency charged with the interpretation or administration thereof, or by any
court, or compliance by Agent, Lenders or any Participant with any request or
directive (whether or not having the force of law) of any such authority,
central bank or comparable agency,

                        (i)  shall impose, modify or deem applicable any reserve
                  other than reserves used in calculating the Libor Rate
                  (including, without limitation, any reserve imposed by the
                  Federal Reserve Board), special deposit, special assessment or
                  similar requirement against assets of, deposits with or for
                  the account of, or credit extended by, Agent, Lenders or any
                  Participant; or

                        (ii) shall impose on Agent, Lenders or any Participant
                  any other condition affecting the Loans;

                  and the result of any of the foregoing is to increase the cost
                  to Agent, Lenders or any Participant of making or maintaining
                  the Loans, or to reduce the amount of any sum received or
                  receivable by Agent, Lenders or any Participant r(degree)1der
                  this Agreement or under any Note with respect thereto, then on
                  the earlier of termination of this Agreement or fifteen days
                  after demand, unless such increased cost is a direct result of
                  an increase required by a regulatory body in Agent, Lender's
                  or any Participant's capital and Borrowers immediately notify
                  Agent in writing of their intention to prepay the Obligations
                  in full within ninety (90) days of such demand, and makes
                  payment to Agent of the Obligations within such ninety (90)
                  day period, Borrowers shall pay directly to Agent from time to
                  time such additional amount or amounts as Agent reasonably
                  determines will compensate Agent, Lenders and each Participant
                  for such increased cost or such reduction.

                  The foregoing notwithstanding, Lenders and Agent shall use
their best efforts to mitigate any such increased costs in any reasonable
manner.

         2.19 Renewals: Conversion and Continuation of Loans.

                  (a) Upon maturity of any Eurodollar Loan, the Borrowers may
renew all or any part of any Eurodollar Loan to them from Lenders with a Loan of
the same or a different type from Lenders, subject to the conditions and
limitations set forth herein and elsewhere in this Agreement. Any Eurodollar
Loan or part thereof so renewed shall be deemed to be repaid in accordance with
this Section 2 with the proceeds of a new borrowing hereunder and the proceeds
of the new Loan, to the extent such proceeds do not exceed the principal amount
of the Eurodollar Loan being renewed, shall not be paid by Lenders to Borrowers.

                                      -34-
<PAGE>

                  (b) The Borrowers shall have the right at any time, upon
notice to Agent given in the manner and at the times specified in this Agreement
with respect to the Loans into which conversion or continuation is to be made,
to convert their Eurodollar Loans into Reference Rate Loans, to convert their
Reference Rate Loans into Eurodollar Loans (specifying the Interest Period to be
applicable thereto), to convert the Interest Period applicable to any of their
Eurodollar Loans to another permissible Interest Period, and to continue any of
their Eurodollar Loans into a subsequent Interest Period of any permissible
duration subject to the terms and conditions of this Agreement, and to the
following:

                       (i)   each conversion shall be effected by Agent by
                  applying the proceeds of the new Reference Rate Loan or
                  Eurodollar Loan, as the case may be, to the Eurodollar Loan or
                  Reference Rate Loan (or portion thereof) being converted;
                  accrued interest on a Loan (or portion thereof) being
                  converted or continued shall be paid by the Borrowers at the
                  time of conversion or continuation; and

                       (ii)  If any Eurodollar Loan is converted at any time
                  other than the end of an Interest Period applicable thereto,
                  the Borrowers shall make such payments associated therewith as
                  are required pursuant to Section 2.20 at the time such
                  Eurodollar Loan shall be converted to a Reference Rate Loan.

The Interest Period applicable to any Eurodollar Loan resulting from a
conversion or continuation shall be specified by the Borrowers in the notice of
conversion or continuation delivered pursuant to this Section 2.19 provided,
however, that if no such Interest Period shall be specified, the Borrower shall
be deemed to have selected a Reference Rate Loan.

         2.20 Indemnity. The Borrowers shall indemnify Agent and Lenders against
any loss, fee, claim, damage, liability or expense which Agent or Lenders may
sustain or incur as a consequence of (i) any failure by the Borrowers to fulfill
on the date of any borrowing hereunder the applicable conditions set forth in
this Agreement, (ii) any failure by the Borrowers to borrow hereunder after
notice of borrowing pursuant to this Agreement has been given, (iii) any
payment, prepayment or conversion of a Eurodollar Loan required by any provision
of this Agreement, other than Section 2.21 of this Agreement, or otherwise made
on a date other than the last day of the applicable Interest Period, or (iv) the
occurrence of any Event of Default, including, but not limited to, any loss or
reasonable expense sustained or incurred or to be sustained or incurred in
liquidating or employing deposits from third parties acquired to effect or
maintain such Loan or any part thereof as a Eurodollar Loan. Such loss or
reasonable expense shall include, without limitation, an amount equal to the
excess, if any, as reasonably determined by Agent or any Lender of its cost of
obtaining the funds for the Eurodollar Loan being paid, prepaid or converted or
not borrowed (based on the Libor Rate applicable thereto) for the period from
the date of such payment, prepayment or conversion or failure to borrow to the
last day of the Interest Period for such Eurodollar Loan (or, in the case of a
failure to borrow, the Interest Period for such Eurodollar Loan which would have
commenced on the date of such failure to borrow) over the amount of interest (as
reasonably determined by Agent or such Lender) that could be realized by Agent
and Lenders in re-employing during such period the funds so paid, prepaid or
converted or not borrowed. A certificate of Agent or any Lender setting forth
any

                                      -35-
<PAGE>

amount or amounts which Agent is entitled to receive pursuant to this
Section 2.20 shall be conclusive absent demonstrable or manifest error.

         2.21 Change in Legality.

                  (a) Notwithstanding anything to the contrary herein contained,
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 or Agent to make or maintain any
Eurodollar Loan or to give effect to its obligations as contemplated hereby (an
"Illegality"), or if Agent or Majority Lenders determine that maintenance of
Eurodollar Loans would cause Lenders to implement or modify any reserve (other
than reserves which are used in calculating the Libor Rate), special deposit or
assessment or other requirement, or impose any other condition on Lenders
affecting the Revolving Loans (each of the foregoing circumstances called a
"Regulatory Action"), then, by written notice to the Borrowers, Agent shall:

                       (i)   declare that Eurodollar Loans will not thereafter
                  be made by Lenders hereunder, whereupon the Borrowers shall be
                  prohibited from requesting Eurodollar Loans from Agent
                  hereunder unless such declaration is subsequently withdrawn;
                  provided, however, that if after the date of any such
                  declaration there shall occur any change in law or regulation
                  or in the interpretation thereof by any government authority
                  charged with the administration or interpretation thereof that
                  shall eliminate such Illegality, Agent shall as promptly as
                  reasonably practicable notify the Borrowers and each of the
                  Lenders of such occurrence and withdraw such declaration; and

                       (ii)  require that all outstanding Eurodollar Loans made
                  by it be converted, at Borrowers' expense, to Reference Rate
                  Loans, in which event (1) all such Eurodollar Loans shall be
                  automatically converted to Reference Rate Loans as of the
                  effective date of such notice as provided in paragraph (b)
                  below, and (2) all payments and prepayments of principal which
                  would otherwise have been applied to repay the converted
                  Eurodollar Loans shall instead be applied to repay the
                  Reference Rate Loans resulting from the conversion of such
                  Eurodollar Loans.

(b) For purposes of this Section 2.21, a notice to the Borrowers by Agent
pursuant to paragraph (a) above shall be effective on the date of receipt by the
Borrowers.

         2.22 Unavailability of Deposits or Inability to Ascertain, or
Inadequacy of Libor Rate. If on or prior to the first day of any Interest Period
for any borrowing of Eurodollar Loans:

                  (a) the Agent advises the Borrowers that deposits in United
States Dollars (in the applicable amounts) are not being offered to it in the
off-shore U.S. Dollar interbank market for such Interest Period, or

                  (b) the Majority Lenders advise the Agent that the Libor Rate
as determined by the Agent will not adequately and fairly reflect the cost to
such Lenders of funding their

                                      -36-
<PAGE>

Eurodollar Loans for such Interest Period due to the fact that the Libor market
ceases to exist, then the Agent shall forthwith give notice thereof to the
Borrowers and the Lenders, whereupon until the Agent notifies the Borrowers that
the circumstances giving rise to such suspension no longer exist, the
obligations of the Lenders to make Eurodollar Loans shall be suspended without
liability to Agent or Lenders.

         2.23 Increased Cost and Reduced Return. If on or after the date hereof,
the adoption of any applicable law, rule or regulation, or any change therein,
or any change in the interpretation or administration thereof by any
governmental authority, central bank or comparable agency charged with the
interpretation or administration thereof, or compliance by any Lender (or its
Applicable Lending Office) with any request or directive (whether or not having
the force of law) of any such authority, central bank or comparable agency:

                  (a) shall subject any Lender (or its Applicable Lending Office
or Eurodollar Office) to any tax, duty or other charge with respect to its
Eurodollar Loans, its Revolving Loan Note, or its obligation to make Eurodollar
Loans, or shall change the basis of taxation of payments to any Lender (or its
Applicable Lending Office or Eurodollar Office) of the principal of or interest
on its Eurodollar Loans or any other amounts due under this Agreement in respect
of its Eurodollar Loans or its obligation to make Eurodollar Loans (except for
changes in the rate of tax on the overall net income of such Lender or its
Applicable Lending Office or Eurodollar Office imposed by the jurisdiction in
which such lender's principal executive office or Applicable Lending Office or
Eurodollar Office is located); or

                  (b) shall impose, modify or deem applicable any reserve
(except for reserves used in calculating the Libor Rate), special deposit or
similar requirement (including, without limitation, any such requirement imposed
by the Board of Governors of the Federal Reserve System, against assets of,
deposits with or for the account of, or credit extended by, any Lender (or its
Applicable Lending Office or Eurodollar Office) or shall impose on any Lender
(or its Applicable Lending Office or Eurodollar Office) or on the interbank
market any other condition affecting its Eurodollar Loans, its Revolving Loan
Note, or its obligation to make Eurodollar Loans; and the result of any of the
foregoing is to increase the cost to such Lender (or its Applicable Lending
Office or Eurodollar Office) of making or maintaining any Eurodollar Loan, or to
reduce the amount of any sum received or receivable by such Lender (or its
Applicable Lending Office or Eurodollar Office) under this Agreement or under
its Revolving Loan Note with respect thereto, by an amount deemed reasonably and
in good faith by such Lender to be material, then, Borrowers shall, within
fifteen (15) days after demand by such Lender (with a copy to the Agent), be
obligated to pay such Lender such additional amount or amounts as will
compensate such Lender for such increased cost or reduction (computed commencing
on the effective date of any event mentioned herein). Each Lender agrees to use
its best efforts to give the Borrowers and Agent notice of the occurrence of any
event mentioned herein. Lenders may then, upon notice to Borrowers (with a copy
to Agent), elect to increase the interest rate applicable to all Eurodollar
Loans made subsequent thereto, to compensate Lenders for such increased cost or
reduced yield. The foregoing notwithstanding, Lenders and Agent shall use their
best efforts to mitigate any such increased costs or reduction in any reasonable
manner.

                                      -37-
<PAGE>

         2.24 Discretion of Lenders as to Manner of Funding. Notwithstanding any
other provision of this Agreement, each Lender shall be entitled to fund and
maintain its funding of all or any part of its Loans in any manner it sees fit,
it being understood, however, that for the purposes of this Agreement all
determinations hereunder shall be made as if each Lender had actually funded and
maintained each Eurodollar Loan through the purchase of deposits in the
interbank market having a maturity corresponding to each Eurodollar Loan's
Interest Period and bearing an interest rate equal to the Libor Rate for such
interest period.

         2.25 Right of Lenders to Fund through Other Offices. Each Lender may,
if it so elects, fulfill its commitment as to any Eurodollar Loan by causing a
foreign branch or Affiliate of such Lender to make such Loan; provided that in
such event for the purposes of this Agreement such Loan shall be deemed to have
been made by such Lender and the obligation of the Borrowers to repay such Loan
shall nevertheless be to such Lender and shall be deemed held by it, to the
extent of such Loan, for the account of such branch or Affiliate.

         2.26 Mitigation of Circumstances; Replacement of Lenders.

                  (a) Each Lender shall promptly notify the Borrowers and the
Agent of any event of which it has knowledge which will result in, and will use
reasonable commercial efforts available to it (and not, in such Lender's sole
judgment, otherwise disadvantageous to such Lender) to mitigate or avoid, (i)
any obligation by the Borrowers to pay any amount pursuant to Section 2.23 or
2.21, or (ii) the occurrence of any circumstances described in Section 2.22 or
2.21 (and, if any Lender has given notice of any such event described in clause
(i) or (ii) above and thereafter such event ceases to exist, such Lender shall
promptly so notify the Borrowers and the Agent). Without limiting the foregoing,
each Lender will designate a different funding office if such designation will
avoid (or reduce the cost to the Borrowers of) any event described in clause (i)
or (ii) of the preceding sentence and such designation will not, in such
Lender's sole judgment, be otherwise disadvantageous to such Lender.

                  (b) If the Borrowers become obligated to pay additional
amounts to any Lender pursuant to Sections 2.18, 2.21 or 2.23, or any Lender
gives notice of the occurrence of any circumstances described in Section 2.21 or
2.22, the Borrowers may designate another bank which is acceptable to the Agent
and the Issuing Bank in their reasonable discretion (such other bank being
called a "Replacement Lender") to purchase the Loans of such Lender and such
Lender's rights hereunder, without recourse to or warranty by, or expense to,
such Lender, for a purchase price equal to the outstanding principal amount of
the Loans payable to such Lender plus any accrued but unpaid interest on such
Loans and all accrued but unpaid fees owed to such Lender and any other amounts
payable to such Lender under this Agreement, and to assume all the obligations
of such Lender hereunder, and, upon such purchase and assumption (pursuant to an
Assignment Agreement), such Lender shall no longer be a party hereto or have any
rights hereunder (other than rights with respect to indemnities and similar
rights applicable to such Lender prior to the date of such purchase and
assumption) and shall be relieved from all obligations to the Borrowers
hereunder, and the Replacement Lender shall succeed to the rights and
obligations of such Lender hereunder.

                                      -38-
<PAGE>

         2.27 Adjustments to Applicable Margin. The Reference Rate Option, the
Eurodollar Rate Option, the unused line fee, and the standby and trade Letter of
Credit fees shall be adjusted as to the Applicable Margin based on changes in
the Interest Coverage Ratio. Such adjustments shall be made by the Agent without
notice to Borrowers, based on such Ratio as of the end of a calendar quarter.
The Applicable Margin shall be reduced to a specified level only in the event
that (A) no Potential Default or Event of Default exists as of the date of
determination and (B) the required Interest Coverage Ratio has been satisfied.
All adjustments shall be effective as follows:

                  (a) the Agent shall make its Applicable Margin determination
within five (5) Business Days of the receipt by the Agent (the "Review Period")
of Borrowers' quarterly financial statements received at the end of September,
December, March or June, or annual financial statements and Compliance
Certificate indicating that an adjustment in the Applicable Margin is warranted;

                  (b) any reduction or increase in the Applicable Margin after
the Review Period with respect to a Eurodollar Loan or a Reference Rate Loan
shall be effective on the day following the end of any Review Period; and

                  (c) if any Financial Statements necessary for calculation of
the Interest Coverage Ratio provided for in this Section 2.27 are not delivered
to the Agent within the time periods specified in Section 10.3, and such
statements when ultimately delivered give rise to an increase in the Applicable
Margin, such increase shall be retroactive to the date such Financial Statements
were required to be delivered pursuant to Section 10.3.

3.       TERMS OF THIS AGREEMENT; PREPAYMENTS

         3.1 Initial Term and Renewal Terms. This Agreement shall have a term
(the "Initial Term") commencing on the Effective Date and expiring on the
Revolving Loan Termination Date, and shall not be extended thereafter except by
written agreement of the parties hereto.

         3.2 Agent Right to Terminate. Notwithstanding the foregoing, upon the
occurrence of an Event of Default which is an Uncured Default, Agent may in
accordance with Sections 13.1 and 17 of this Agreement terminate this Agreement
without notice, except that this Agreement shall terminate automatically upon an
Event of Default under Section 12.7.

         3.3 Effects of Termination. On the date of termination or expiration of
this Agreement, all Obligations owed by Borrower shall become immediately due
and payable without notice or demand and shall be repaid in cash or by a wire
transfer of immediately available funds. Notwithstanding termination, until all
Obligations have been fully repaid (including without limitation all Obligations
in connection with the Letters of Credit), Agent shall retain its Lien on the
Collateral of Borrowers, all collection arrangements described in Section 2.12
shall remain in full force and effect and Borrowers shall continue to
immediately turn over to Agent, in kind, all collections received with respect
to the Accounts:

                                      -39-
<PAGE>

         3.4 Voluntary Prepayment. Borrower may borrow, repay and reborrow
Revolving Loans subject to the terms of this Agreement.

         3.5 Mandatory Prepayments. (a) The Borrowers shall make a prepayment of
the Revolving Loans upon the occurrence of any of the following (each a
"Mandatory Prepayment Event") at the following times and in the following
amounts (such applicable amounts being referred to as "Designated Proceeds"):

                       (i)   Concurrently with the receipt by the Borrowers of
                  any Net Cash Proceeds from any Asset Sale, in an amount equal
                  to 100% of such Net Cash Proceeds to the extent not reinvested
                  in accordance with the terms of Section 8.1 hereof.

                       (ii)  Concurrently with the receipt by the Borrowers of
                  any Net Cash Proceeds from any issuance of equity securities
                  of the Borrowers (excluding (x) any issuance of shares of
                  capital stock pursuant to any employee or director stock
                  option program, benefit plan or compensation program and (y)
                  any issuance by a Subsidiary to the Borrowers or another
                  Subsidiary), in an amount equal to 100% of such Net Cash
                  Proceeds.

                       (iii) Concurrently with the receipt by the Borrowers of
                  any Net Cash Proceeds from any issuance of any Indebtedness or
                  permitted issuance of equity of the Borrowers in an amount
                  equal to 100% of such Net Cash Proceeds.

         3.6 Reductions of the Revolving Loan Commitment. All reductions of the
Revolving Loan Commitment, if any, shall reduce the Commitments pro rata among
the Lenders according to their respective Pro Rata Shares.

         3.7 Termination: Reduction of Maximum Credit Facility. Subject to the
terms of Section 3.5 of this Agreement and this Section 3.7, Borrowers may, at
any time, on thirty (30) days written notice prior to the end of any month,
prepay in full the Loans and terminate this Agreement by paying to Agent, in
cash or by a wire transfer of immediately available funds, the Obligations.
Concurrently with any reduction of the Revolving Loan Commitment to zero, the
Borrowers shall pay all accrued interest on the Revolving Loans, all unused line
fees and all Letter of Credit fees. If any Letters of Credit are outstanding on
the effective date of termination, Borrowers shall deliver to Agent cash
collateral in an amount equal to the aggregate undrawn face amount of such
Letters of Credit (plus the projected amount of all reasonable fees associated
therewith). After termination of this Agreement and receipt by Agent of payment
in full of all Obligations, Agent shall at Borrowers' expense execute a
termination of all Liens given by the Borrowers to Agent; provided, that the
indemnifications set forth in Section 20 and elsewhere in this Agreement shall
survive such termination. Borrowers may, at any time, on five (5) day's written
notice prior to the end of any month, elect to permanently reduce the Maximum
Revolving Credit Facility in increments of not less than $1,000,000 to an amount
not less than the Revolving Loans outstanding.

                                      -40-
<PAGE>

4.       CREATION OF LIEN AND COLLATERAL

         4.1 Security Interest. Borrowers hereby grant to Agent on behalf of
Lenders, a continuing lien and security interest in all presently existing and
hereafter arising Collateral which the Borrowers now or hereafter own or have an
interest in, wherever located, to secure prompt repayment of any and all
Obligations owed and to be owed by Borrowers to Agent or Lenders (and their
Affiliates with respect to Permitted Swap Obligations) and to secure prompt
performance by Borrowers of each and all of their covenants and obligations
under this Agreement and the other Loan Documents. Agent's lien and security
interest in the Collateral shall attach to all Collateral without further act on
the part of Agent or Borrowers. In the event that any Collateral, including
proceeds, is evidenced by or consists of Negotiable Collateral, Borrowers shall,
immediately upon receipt thereof, endorse and assign such Negotiable Collateral
over to Agent (or in blank if requested by Agent) and deliver actual physical
possession of the Negotiable Collateral to Agent or to an agent, on behalf of
Agent.

         4.2 Preservation of Collateral and Perfection of Security Interests.
Borrowers shall execute and deliver to Agent, concurrent with Borrowers'
execution of this Agreement, and at any time or times hereafter immediately at
the request of Agent, all financing statements, amendments or continuations of
financing statements, fixture filings, security agreements, mortgages, chattel
mortgages, assignments, endorsements of certificates of title, affidavits,
reports, notices, schedules of accounts, letters of authority and all other
documents that Agent may reasonably request, in form satisfactory to Agent, to
perfect and maintain perfected Agent's Liens and security interests in the
Collateral and to fully consummate all of the transactions contemplated under
this Agreement. Borrowers hereby irrevocably make, constitute and appoint Agent
(and any of Agent's officers, employees or agents designated by Agent), with
full power of substitution by Agent, as Borrowers' true and lawful attorney with
power to sign the name of any Borrowers on any of the above-described documents
or on any other similar documents which need to be executed, recorded and/or
filed to perfect or continue perfected Agent's Lien in the Collateral. For
purposes hereof, photocopies of this Agreement or any other Loan Agreement
constituting a security agreement may be filed by Agent as a financing
statement.

         4.3 Inspection; Appointment as Attorney-in-Fact. Agent or any of the
Lenders (through any of-heir officers, employees or agents) shall have the
right, at any time or times after the occurrence of an Event of Default which is
an Uncured Default, and otherwise upon three (3) Business Day's prior notice,
during Borrowers' usual business hours, or during the usual business hours of
any third party having control over the records of Borrowers, to inspect and
verify Borrowers' Books and the Collateral in order to verify the amount or
condition of, or any other matter relating to, the Collateral and Borrowers'
business, affairs, operations, or financial condition. Prior to the occurrence
of an Event of Default, Agent and Lenders shall treat such information as
confidential and shall not disclose such information unless required by laws,
banking regulation, or court order. In addition, Borrowers hereby appoint Agent
(and any of Agent's officers, employees or agents designated by Agent), with
full power of substitution by Agent, as Borrowers' attorney, with power upon the
happening or occurrence and during the continuation of an Event of Default which
is an Uncured Default hereunder, upon simultaneous written notice to Borrowers:
to endorse Borrowers' name on any checks, notes, acceptances, money orders,
drafts or other forms of payment or security that may come into Agent's

                                      -41-
<PAGE>

possession; to sign Borrowers' name on any invoice or bill of lading relating to
any Accounts, on drafts against Account Debtors, on schedules and assignments of
Accounts, on verifications of Accounts and on notices to Account Debtors; after
an occurrence of an Event of Default which is an Uncured Default, to notify the
post office authorities to change the address for delivery of Borrowers' mail to
an address designated by Agent, to receive and open all mail addressed to
Borrowers, and to retain all mail relating to the Collateral and forward all
other mail to Borrowers; and to send, whether in writing or by telephone,
request for verifications of Accounts and request for verifications of trade and
other Indebtedness of Borrowers; and to do all things necessary to carry out
this Agreement. Borrowers ratify and approve all acts of the attorney and
neither Agent nor any other Person acting as Borrowers' attorney hereunder will
be liable for any acts or omissions or for any error of judgment or mistake of
fact or law made in good faith except as result of gross negligence or willful
misconduct. The appointment of Agent as Borrowers' attorney, and each and every
one of Agent's rights and powers, being coupled with an interest, subject to the
provisions herein, are irrevocable so long as any Accounts in which Agent has a
Lien remain unpaid and until all of the Obligations have been fully repaid and
this Agreement shall have expired or been terminated.

5.       CONDITIONS PRECEDENT

         5.1 Closing, Conditions to Initial Loan and Closing. The initial
Revolving Loan hereunder shall be made upon the Effective Date hereunder at the
offices of Agent's counsel ("Closing"). In addition to those conditions set
forth hereunder in Section 5.2 with respect to all Loans and Letters of Credit
hereunder, prior to or contemporaneously with the making of the initial
Revolving Loan hereunder at Closing, Lenders shall be satisfied that all of the
following conditions precedent shall have been satisfied in a manner
satisfactory to Lenders.

                  (a) Satisfactory Due Diligence. Lenders shall have completed
and shall be satisfied with the results of (i) due diligence by Lenders and
their counsel, (ii) Lenders' updated field examination of Borrowers, (iii) the
Borrowers' most recent interim financial statements; (iv) all appraisals
required by Lenders; and (v) any governmental approvals, waivers or consents.

                  (b) No Adverse Change. There shall have been as determined by
Lenders in their discretion (i) no material adverse change since March 31, 2000
in the operations (financial or otherwise) of Borrowers, and (ii) no material
litigation or claims with respect to this Agreement which is adverse to
Borrowers.

                  (c) Senior Loan. Lenders shall have received evidence
satisfactory to them that
Agent has a first priority perfected Lien on the Collateral and all financing
statements and other documents Lenders deem necessary to perfect such lien shall
have been filed and recorded.

                  (d) Required Documents. Agent shall have received all of the
following documents, each in form and substance satisfactory to Agent and its
counsel, duly executed and dated the Effective Date (or such other date prior
thereto as shall be satisfactory to Agent):

                       (i)   Agreement.  Multiple copies of this Agreement as
                  requested by Agent.

                                      -42-
<PAGE>

                       (ii)  Revolving Loan Notes.  The Revolving Loan Notes.

                       (iii) Search Results: Lien Terminations.  Certified
                  copies of Uniform Commercial Code Requests for Information or
                  Copies (Form UCC-11), or a similar search report certified by
                  a party acceptable to the Agent, dated a date reasonably near
                  to the Closing Date, listing all effective financing
                  statements which name each Borrower and each Subsidiary (under
                  their present names and any previous names) as debtors and
                  which are filed in the jurisdictions in which filings are to
                  be made, together with (i) copies of such financing
                  statements, (ii) executed copies of proper Uniform Commercial
                  Code Form UCC-3 termination statements, if any, necessary to
                  release all Liens and other rights of any Person in any
                  Collateral previously granted by any Person (other than Liens
                  permitted by Section 8.1), and (iii) such other Uniform
                  Commercial Code Form UCC-3 termination statements as the Agent
                  may reasonably request.

                       (iv)  Filings, Registrations and Recordings. The Agent
                  shall have received each document (including Uniform
                  Commercial Code financing statements) required under law or
                  reasonably requested by the Agent to be filed, registered or
                  recorded in order to create in favor of the Agent, for the
                  benefit of the Lenders, a perfected Lien on the collateral
                  described therein, prior and superior to any other Person, in
                  proper form for filing, registration or recording.

                       (v)   Landlord Waiver. A landlord waiver from the
                  landlord of Borrowers' Aurora, Illinois, Schaumburg, Illinois
                  and Lombard, Illinois facilities, in form and substance
                  satisfactory to Agent in its reasonable discretion; provided,
                  however, such landlord waivers may be provided within thirty
                  (30) days after the Closing.

                       (vi)  Bailee Agreement.  A bailee agreement with respect
                  to Borrowers' Servex warehouse location, in form and substance
                  satisfactory to Agent in its reasonable discretion.

                       (vii) Officers' Certificates.  A certificate of an
                  officer of each Borrower, in the form attached hereto as
                  Exhibit D and dated as of the date hereof.

                       (viii) Organizational Documents. Copies, certified no
                  earlier than thirty days before the Closing, by the Secretary
                  of State of the State of Illinois and the Secretary of State
                  of Delaware, of the Articles and/or Certificates of
                  Incorporation, and any amendments thereto, of each Borrower.

                       (ix)  Certificate of Existence. A certificate of the
                  Secretary of State of the State of incorporation of each
                  Borrower, dated no earlier than thirty days before the
                  Closing, as to the good standing of each Borrower in the State
                  of its incorporation and in each other State listed on
                  Schedule 7.2 hereof.

                                      -43-
<PAGE>

                       (x)   Opinion of Counsel. The written opinion, in a form
                  acceptable to the Agent, of McDermott, Will & Emery, as
                  counsel for the Borrowers, dated as of the date hereof and
                  addressed to the Agent on behalf of the Lenders.

                       (xi)  Certificate of Insurance. Certificates or other
                  evidence from an insurance company or companies acceptable to
                  the Agent as to the policies of insurance, binders and
                  endorsements thereto and such other insurance coverage to be
                  maintained by the Borrowers pursuant to Section 9.3 hereof,
                  each of which shall name the Lender as lender's loss payee and
                  additional insured;

                       (xii) Financial Statements. All information, Financial
                  Statements, or notices to be delivered to the Agent pursuant
                  to Section 10(b) hereof, including, without limitation, the
                  Borrowers' consolidated Financial Statements for Borrower's
                  Fiscal Years ending March 31, 1998, 1999, and 2000, and the
                  Borrowers' unaudited interim consolidated Financial Statements
                  for the quarterly period ended June 30, 2000;

                       (xiii) Letter of Direction. Copies of a letter of
                  direction with wire transfers or other appropriate
                  instructions directing the Agent, on behalf of the Lenders to
                  disburse funds in appropriate amounts to specific accounts;

                       (xiv) Directors' Consents. Certified copies of the
                  unanimous written consents, or resolutions duly adopted at
                  meetings, of the Boards of Directors of the Borrowers in the
                  form attached hereto as Exhibit E hereto authorizing the
                  execution, delivery and performance by the Borrowers of this
                  Agreement, the Notes and the other Loan Documents.

                       (xv)  Stock Pledge Agreements.  Stock Pledge Agreement in
                  the form of Exhibit F hereto executed and delivered by Westell
                  Technologies, Inc.;

                       (xvi) Patent and Trademark Mortgages.  Assignment,
                  Security Agreements, and Mortgages - Trademarks Ad Patents,
                  executed by Westell Technologies, Inc., Westell, Inc.,
                  Conference Plus, Inc., and Teltrend, Inc.

                       (xvii) Solvency Certificates.  Solvency certificates from
                  the chief financial officers of the Borrowers, in form and
                  substance satisfactory to Agent and the Lenders in their
                  reasonable discretion.

                       (xviii) Projections. Projected income statements, balance
                  sheets and cash flow statements prepared by the Borrowers
                  giving effect to the Revolving Loans and the use of the
                  proceeds therefrom, in form and substance satisfactory to the
                  Agent in its reasonable discretion.

                       (xix) Borrowers' Deliveries. In form and substance
                  reasonably satisfactory to the Agent, each and every
                  agreement, document, note, release, certificate, notice,
                  affidavit, exhibit, schedule, legal opinion, assignment,
                  security

                                      -44-
<PAGE>

                  agreement or financing statement, which the Agent may
                  reasonably request from the Borrowers to effect the intent of
                  this Agreement.

                  (e) Out-of-Pocket Fees and Costs. Lenders and Agent shall have
received reimbursement for all Out-of-Pocket Fees and Costs which then have been
paid or accrued by Lenders and Agent, including the fees provided for in the fee
letter dated July 25, 2000 between Borrowers and Agent.

         5.2 Condition to All Loans and Letters of Credit. Notwithstanding any
other provisions contained in this Agreement, the making of each Loan and the
issuance of each Letter of Credit provided for in this Agreement shall be
conditioned upon the satisfaction of the matters set forth in this Section 5.2,
and each request by Borrowers for a Revolving Loan or Letter of Credit shall
constitute a representation to Agent and Lenders that each such condition set
forth below has been met or satisfied.

                  (a) Warranties and Representations. All of the warranties and
representations contained in this Agreement or any other Loan Document shall be
true and correct in all material respects on and as of the date of such
Revolving Loan or Letter of Credit as if made on such date and each request for
a Revolving Loan or Letter of Credit shall constitute an affirmation by
Borrowers that such warranties and representations are then true and correct in
all material respects.

                  (b) Borrowers' Request. Agent shall have received on or before
12:00 p.m. central standard time on the day a Reference Rate Loan is to be made
(or three (3) Business Days before a Letter of Credit is to be issued or a
Eurodollar Loan is to be made) a written or telephonic request from an officer
of Borrowers (or any other Person believed by Agent to be authorized by Borrower
pursuant to Section 2.1), for a Revolving Loan (or a Letter of Credit) in a
specific amount. In addition, with respect to a request for a Revolving Loan (or
a Letter of Credit), Agent shall have received copies of all other documents
required to have been delivered to Agent hereunder. Agent shall be entitled, but
not required, to rely on oral requests for Revolving Loans from officers from
time to time designated by Borrowers to Agent in writing, and shall be fully
protected in doing so.

                  (c) No Default. As determined by Agent in its reasonable
discretion, no Potential Default shall have occurred or will result from such
Revolving Loan or Letter of Credit and no Event of Default which shall be an
Uncured Default shall have occurred or will result from such Revolving Loan or
Letter of Credit.

                  (d) No Litigation. (i) Except as set forth on Schedule 7.7 no
litigation, investigation or proceeding before any court or other governmental
authority shall be pending or threatened against any Borrower or any officer,
director, or employee of Borrowers which, in the reasonable opinion of Agent, is
likely to have a material adverse effect on the condition, financial or
otherwise, business, property or results of operations of Borrowers; and (ii) no
injunction, writ, restraining order, judgment, decree, or other order of any
nature which could reasonably have a material adverse effect on the condition,
financial or otherwise, business,

                                      -45-
<PAGE>

property or results of operations of Borrowers shall have been issued or
threatened by any court or other governmental authority.

                  (e) Other Requirements and Other Documents. Lenders shall have
received, in form and substance reasonably satisfactory to Lenders, all
certificates, orders, authorizations, consents, affidavits, schedules,
instruments, security agreements, financing statements, and other documents
which are provided for hereunder, or which Lenders may at any time reasonably
request.

6.       WARRANTIES, REPRESENTATIONS, AND COVENANTS - COLLATERAL

         Borrowers warrant, represent, covenant and agree that:

         6.1 Collateral Warranties Generally. Borrowers have and will continue
to have good and marketable title to the Collateral; the Collateral is free and
clear of all Liens, except (i) as may be consented to in writing by Lenders,
(ii) as held by Agent, or (iii) other Permitted Liens.

                  (a) Account Warranties and Covenants. With respect to the
Accounts of the Borrowers scheduled, listed or referred to from time to time on
any Aging Reports or Financial Statement, each Borrower warrants and represents
to the Lenders that: (a) such Accounts are genuine, are in all respects what
they purport to be, and are not evidenced by a judgment; (b) such Accounts are
assignable and a security interest may be granted therein and such Accounts are
subject to the first and prior perfected Lien and security interest of the
Lenders; (c) such Accounts represent undisputed, bona fide transactions
completed in material compliance with the terms and provisions of the documents
related thereto as delivered to the Lenders if so requested; (d) the Equipment
or Inventory sold or leased, or the services rendered, which resulted in the
creation of such Accounts have been delivered or rendered to the applicable
Account Debtor; (e) the amounts shown on the Borrowers' books and records and
all invoices and statements delivered to the Lenders, when and if so requested,
with respect to such Accounts are actually and absolutely owing to the
applicable Borrower and are not in any way contingent; (f) no payments have been
made upon such Accounts; (g) there are no set-offs, counterclaims or disputes
existing or, to Borrowers' knowledge, asserted with respect to such Accounts and
the Borrowers have not made any agreement with any applicable Account Debtor for
any deduction or discount from any such Account, except discounts allowed by the
Borrowers in the ordinary course of their business for prompt payment; (h) to
the knowledge of the Borrowers, there are no facts, events or occurrences which
in any way impair the validity or the enforceability of such Accounts or tend to
reduce the amounts payable under such Accounts as shown on the books and records
of the Borrowers and the invoices and statements delivered to the Lenders, when
and if so requested, with respect thereto; (i) to the best knowledge of the
Borrowers without independent inquiry, all of the applicable Account Debtors
with respect to such Accounts have the capacity to contract and are solvent; (j)
such Accounts and the Equipment, or Inventory sold or leased or the services
rendered giving rise to said Accounts are not subject to any lien, security
interest, claim, charge or any other encumbrance, except for the first and prior
perfected security interest of the Lenders and except those of holders of the
Permitted Liens; and (k) to the knowledge of the Borrowers, there are no
proceedings or actions which are threatened or

                                      -46-
<PAGE>

pending against any of the applicable Account Debtors which might result in any
material adverse change in such Account Debtor's financial condition.

         6.2 Equipment, Inventory Collateral Warranties and Covenants. Borrowers
warrant, represent, covenant and agree that:

                  (a) Borrowers shall keep the Equipment and Inventory only at
the locations specified in Schedule 6.2 hereto or locations consented to by
Agent upon Five (5) Business Days'` prior written notice to Agent, and execution
by Borrowers or any other Persons of such financing statements, landlord,
mortgagee, bailee, warehouseman or other agreements requested by Agent in its
reasonable discretion.

                  (b) Borrowers shall keep and maintain the Equipment in good
operating condition and repair (normal wear and tear excepted) and subject to
the terms of this Agreement make necessary or appropriate replacements thereto.
Borrowers shall, to the best of their ability, not permit any items of Equipment
to become a fixture to real estate or an accession to other property and the
Equipment is now and shall at all times remain and be personal property.
Borrowers shall promptly deliver to Agent any and all evidence of ownership, if
any, of any of the Equipment (including, without limitation, certificates of
title and applications for title). Borrowers shall maintain accurate, itemized
records describing the kind, type, quality, quantity and value of their
Equipment and shall furnish Agent with a current schedule containing the
foregoing information when requested, and Borrowers shall not sell, lease, or
otherwise dispose of or transfer any of the Equipment or any part thereof,
except as otherwise permitted under the terms of this Agreement. Borrower shall
as and when reasonably requested by Agent, procure and supply to Agent,
appraisals of the Equipment by appraisers and in form reasonably satisfactory to
Agent.

                  (c) Except as disclosed on Schedule 6.2(c) hereto, the
Inventory is not now and shall not at any time or times hereafter be stored with
a bailee, warehouseman or similar party without Agent's prior written consent,
and, in such event, Borrowers will upon Agent's request, concurrent therewith,
cause any such bailee, warehouseman or similar party to issue and deliver to
Agent, in a form acceptable to Agent, warehouse receipts in Agent's name
evidencing the storage of the Inventory. No Inventory has been consigned to any
Person, except with respect tot that Inventory as to which Borrowers have
notified Agent.

                  (d) Borrowers shall keep correct and accurate records
itemizing and describing the kind, type, quality and quantity of the Inventory,
and their costs therefor, all of which records shall be available at all times
after the occurrence of an Event of Default and otherwise, during Borrowers'
usual hours after reasonable demand to any of Agent's officers, agents, and
employees for inspection and copying.

                  (e) Agent shall have the right, at all times after the
occurrence of an Event of Default and otherwise upon three (3) Business Day's
prior notice to Borrowers on a reasonable basis, during Borrowers' usual
business hours, to inspect and examine the Inventory and Equipment and to check
and test the same as to quality, quantity, value, and condition. The Agent shall
be permitted to perform annual field audits and, in its reasonable commercial

                                      -47-
<PAGE>

discretion, fixed asset appraisals of any of Borrowers' premises where any of
the Collateral is located at Borrowers' expense.

7.       GENERAL CONTINUING WARRANTIES AND REPRESENTATIONS

         Borrowers warrant, represent, covenant and agree that:

         7.1 Office. The chief executive office or principal place of business
of Borrowers are at the address indicated in Section 16 hereof and Borrowers
covenant and agree that they will not, during the term of this Agreement,
without at least five (5) Business Days' prior written notification to Agent and
the delivery to Agent if requested, of an executed landlord's or mortgagee's
waiver and Code financing statements in form acceptable to Agent relocate such
chief executive office or principal place of business.

         7.2 Existence. Each Borrower is and shall at all times hereafter be a
corporation duly organized, validly existing, and in good standing under the
laws of the state of its organization and is qualified and licensed to do
business, and is in good standing, in any state in which it conducts its
business or in which the failure to qualify could have a material adverse effect
on the condition, financial or otherwise, business, property or results of
operations of such Borrower, which states include, as of the date hereof and as
of the Closing Date, the states listed on Schedule 7.2 (provided that inclusion
on said Schedule 7.2 does not mean that failure to qualify in such state would
have a material adverse effect on the condition, financial or otherwise,
business, property or results of operation of Borrowers).

         7.3 Authority. Each Borrower has all corporate power and authority to
own its property and assets and to carry on and engage in its business as it is
now conducted and as is presently proposed to be conducted, and each Borrower
has all material licenses, permits, franchises, consents, approvals and
authorizations (collectively, "Licenses") required in connection with the
foregoing, all of which Licenses are in full force and effect and no action or
claim is pending, nor, to Borrowers' knowledge, is threatened, to revoke or
terminate any of the Licenses or declare any License invalid. No consent,
approval or authorization of, or filing, registration or qualification with, any
Person, governmental, regulatory, or otherwise, is required to be obtained or
effected by any Borrower or any Affiliates in connection with the execution,
issuance, delivery and performance of this Agreement, the Notes and the Loan
Documents to which the Borrowers or any Affiliates are a party or signatory or
the incurrence or performance of the Obligations of the Borrowers or any
Affiliates or, if so required, it has been duly obtained or effected before the
date hereof. The execution, issuance, delivery and performance of this
Agreement, the Notes and the Loan Documents to which any Borrower is a party or
is a signatory and the incurrence or performance of the Obligations and
indebtedness of the Borrowers hereunder (a) has been duly and properly
authorized by all necessary corporate, director, shareholder and other action of
each Borrower and (b) has not resulted in and will not result in:

                       (i)   the creation or imposition of any Lien, security
                  interest, mortgage, charge or any encumbrance of any nature
                  whatsoever (except in favor of the Agent) upon any of any
                  Borrowers' property or assets, or

                                      -48-
<PAGE>

                       (ii)  the violation or contravention of, the occurrence
                  of a default, Event of Default or event, which with the
                  passage of time or giving of notice or both, would constitute
                  a default or event of default under, any term or provision of
                  its articles or certificate of incorporation, any certificates
                  of authority to do or transact business, any order of any
                  court, or any material contract, agreement, mortgage,
                  indenture, instrument, judgment or Laws to which any Borrower
                  or any Affiliates are parties or signatories or by which any
                  Borrower or any Affiliates are bound.

         7.4 Validity. This Agreement and all of the other Loan Documents are
the legal, valid and binding obligations of Borrowers, enforceable in accordance
with their terms, except as limited by applicable bankruptcy, reorganization,
insolvency or similar laws affecting the enforcement of creditor's rights
generally.

         7.5 Solvency. On the Effective Date both prior to and after the
transactions contemplated in connection with the Closing, and at all times
thereafter, the Fair Value of Borrowers' assets is and shall be greater than
their liabilities; Borrowers are and shall be able to pay their debts as they
mature and Borrowers do not and will not have an unreasonably small amount of
capital. Borrowers have and at all times hereafter will have sufficient capital
to carry on their business and transactions as now conducted and as planned to
be conducted in the future.

         7.6 Compliance With Laws. Borrowers are in compliance in all material
respects with all applicable laws, rules and regulations of any governmental
authority, including but not limited to the Securities Act of 1933, the
Securities Exchange Act of 1934, the Fair Labor Standards Act, Environmental
Laws, laws relating to income, unemployment, payroll or social security taxes
and employee benefit plans (as defined in Section 3(3) of ERISA) as required by
ERISA, except for those laws, rules and regulations the violation of which would
not have a material adverse effect on the condition, financial or otherwise,
business, property or results of operations of Borrowers.

         7.7 Actions or Proceedings. Except as disclosed on Schedule 7.7, there
are no actions or proceedings pending by or against any Borrower before any
court, administrative agency or other governmental entity and Borrowers have no
knowledge of any pending, threatened or imminent litigation, governmental
investigations or claims, complaints, actions or prosecutions involving any
Borrower, or any breaches by any Borrower or any other Person of any agreement
to which any Borrower is a party, except for actions, proceedings, litigation,
investigations, claims, complaints, actions, prosecutions and breaches that
would not have a material adverse effect on the condition, financial or
otherwise, business, property or results of operations of Borrowers, the
Collateral, Agent's Liens or Agent's ability to enforce its rights and remedies
hereunder.

         7.8 Trademarks, Licenses, Etc. Each Borrower owns or possesses rights
to use all licenses, patents, patent applications, copyrights, service marks,
trademarks and trade names required to continue to conduct its business as
heretofore or presently conducted. All such licenses, patents, patent
applications, copyright registrations, service marks, trademarks and trade

                                      -49-
<PAGE>

names are listed on Schedule 7.8. To the best of Borrowers' knowledge, after
diligent inquiry, no such license or trademark has been declared invalid, been
limited by order of any governmental authority or by agreement, or is the
subject of any infringement, interference or similar proceeding or challenge,
except for those licenses or trademarks which if challenged, limited or rendered
invalid, would not have a material adverse effect on the condition, financial or
otherwise, business, property or results of operations of Borrowers, the
Collateral, Agent's Liens or Agent's ability to enforce its rights and remedies
hereunder.

         7.9 Financial Statements. All financial statements relating to
Borrowers which have been or may hereafter be delivered by Borrowers to Agent
fairly present the financial condition of Borrowers and have been prepared in
accordance with Generally Accepted Accounting Principles, subject to year-end
adjustments and the absence of footnotes with respect to interim financial
statements, and there has been no material adverse change in the financial
condition of Borrowers since the submission of such financial information to
Agent.

         7.10 Conduct of Business. Except as contemplated, since the date of
March 31, 2000, each Borrower has not: (i) incurred any debts, obligations, or
liabilities (absolute, accrued, or contingent and whether due or to become due)
except current liabilities incurred in the ordinary course of business, none of
which (individually or in the aggregate) materially and adversely affects the
business or properties of such Borrower; (ii) paid any obligation or liability
other than current liabilities in the ordinary course of business, or discharged
or satisfied any liens or encumbrances other than those securing current
liabilities, in each case in the ordinary course of business; (iii) declared or
made any payment to or distribution to its stockholders as such, or purchased or
redeemed any of its shares of capital stock, or obligated itself to do so,
except as permitted hereunder; (iv) mortgaged, pledged, or subjected to any Lien
any of its assets (tangible or intangible), except for Permitted Liens; (v)
sold, transferred or leased any of its assets except in the usual and ordinary
course of business; (vi) suffered any physical damage, destruction or loss
(whether or not covered by insurance) materially and adversely affecting the
properties or business of Borrowers; (vii) entered into any transaction other
than in the usual and ordinary course of business and other than as contemplated
hereby; (viii) encountered any labor difficulties or labor union organizing
activities; (ix) issued or sold any shares of capital stock or other securities
or granted any options or similar rights with respect thereto other than
pursuant hereto; or (x) agreed to do any of the foregoing other than pursuant
hereto. There has been no material adverse change in the business, financial
condition, operations or results of operations of Borrowers since the date of
March 31, 2000.

         7.11 Environmental Laws. (i) Borrowers and all properties owned or
operated by Borrowers comply in all material respects with all applicable
Environmental Laws; (ii) Borrowers are not subject to any actual or, to the best
of Borrowers' knowledge after diligent inquiry, threatened judicial or
administrative proceeding, investigation or inquiry into the possibility of
violation of any Environmental Laws; (iii) Borrowers and their properties are
not the subject of actual or threatened governmental authority investigation or
inquiry evaluating whether any remedial action is needed to respond to a Release
of any Hazardous Material or other substance into the environment, and Borrowers
do not have knowledge or notice of the presence on or under any property owned
or operated by any of them, or of the Release of, any Hazardous Material in
violation of applicable Environmental Laws; (iv) there are no

                                      -50-
<PAGE>

Environmental Claims pending or, to the best of Borrowers' knowledge after
diligent inquiry, threatened against any Borrower relating to damage,
contribution, cost recovery compensation, loss, or injury resulting from the
Release of, or exposure to, any Hazardous Material other than as listed on
Schedule 7.11, which Hazardous Material is stored in or under Borrowers'
property in the ordinary course of their business in accordance with
Environmental Laws; and (v) Borrowers have not filed, nor were required to file,
any notice under any law, regulation or rule indicating past or present
generation, transportation, treatment, storage or disposal of a Hazardous
Material or reporting a Release of a Hazardous Material into the environment and
have not engaged in such activity other than in accordance with Environmental
Laws where failure to file such notice or report will not have an adverse effect
on Borrowers. Borrowers do not have any known contingent liability in connection
with any Release of any Hazardous Material into the environment; and Borrowers
have not received notice, nor have reason to expect notice, of any potential
liability under any Environmental Law.

         7.12 Permits and Licenses. Each Borrower has been and is current and in
good standing with respect to all governmental approvals, permits, certificates,
licenses, inspections, consents and franchises (collectively, the "Licenses")
necessary to continue to conduct its business and to own or lease and operate
its properties as heretofore conducted, owned, leased or operated, including,
without limitation, any and all Licenses related to Environmental Laws.

         7.13 ERISA. None of the Borrowers, any ERISA Affiliate of Borrower, nor
any Benefit Plan is in violation in any material respect of any of the
provisions of ERISA or any of the qualification requirements of Section 401(a)
of the IRC; no Prohibited Transaction or Reportable Event has occurred with
respect to any Benefit Plan, nor has any Benefit Plan been the subject of a
waiver of the minimum funding standard under Section 412 of the IRC; nor has any
Benefit Plan experienced an accumulated funding deficiency under Section 412 of
the IRC; nor has any lien been imposed upon any Borrower or any ERISA Affiliate
of such Borrower under Section 412(n) of the IRC; nor has any Benefit Plan been
amended in such a way that the security requirements of Section 401(a)(29) of
the IRC apply; no notice of intent to terminate a Benefit Plan has been
distributed to affected parties or filed with the PBGC under Section 4041 of
ERISA, nor has any Benefit Plan been terminated under Section 4041(e) of ERISA;
the PBGC has not instituted proceedings to terminate, or appoint a trustee to
administer, a Benefit Plan and no event has occurred or condition exists which
might constitute grounds under Section 4042 of ERISA for the termination of, or
the appointment of a trustee to administer, any Benefit Plan; neither Borrowers
nor any ERISA Affiliate of Borrowers would be liable for any amount pursuant to
Sections 4062, 4063 or 4064 of ERISA if all Benefit Plans terminated as of the
most recent valuation dates of such Benefit Plans except as set forth on
Schedule 7.13, neither Borrowers nor any ERISA Affiliate of Borrowers maintains
any employee welfare benefit plan, as defined in Section 3(1) of ERISA, which
provides any benefits to an employee or the employee's dependents with respect
to claims incurred after the employee separates from service other than is
required by applicable law; and neither Borrowers nor any ERISA Affiliate of
Borrowers has incurred or expects to incur any withdrawal liability to any
Multiemployer Plan.

         7.14 Public Utility Holding Company Act. Neither the Borrowers nor any
Subsidiary is a "holding company", or a "subsidiary company" of a "holding
company", or an "affiliate" of a

                                      -51-
<PAGE>

"holding company" or of a "subsidiary company" of a "holding company", within
the meaning of the Public Utility Holding Company Act of 1935.

         7.15 Real Property. Set forth on Schedule 7.15 is a complete and
accurate list, as of the Closing Date, of the addresses of all real property
owned or leased by the Borrowers or any Subsidiary, together with, in the case
of leased property; the name and mailing address of the lessor of such property.

         7.16 Insurance. Set forth on Schedule 7.16 is a complete and accurate
summary of the property and casualty insurance program of the Borrowers and
their Subsidiaries as of the Closing Date (including the names of all insurers,
policy numbers, expiration dates, amounts and types of coverage, annual
premiums, exclusions, deductibles, self-insured retention, and a description in
reasonable detail of any self-insurance program, retrospective rating plan,
fronting arrangement or other risk assumption arrangement involving the
Borrowers or any Subsidiary).

         7.17 Information. All information heretofore or contemporaneously
herewith furnished in writing by the Borrowers to the Agent for any Lender for
purposes of or in connection with this Agreement and the transactions
contemplated hereby is, and all written information hereafter furnished by or on
behalf of the Borrowers to the Agent or any Lender pursuant hereto or in
connection herewith will be, true and accurate in every material respect on the
date as of which such information is dated or certified, and none of such
information is or will be incomplete by omitting to state any material fact
necessary to make such information not misleading in light of the circumstances
under which made (it being recognized by the Agent and the Lenders that any
projections and forecasts provided by the Borrowers are based on good faith
estimates and assumptions believed by the Borrowers to be reasonable as of the
date of the applicable projections or assumptions and that actual results during
the period or periods covered by any such projections and forecasts may differ
from projected or forecasted results).

         7.18 No Default. No Event of Default or Uncured Default exists or would
result from the incurring by the Borrowers of any Indebtedness hereunder or
under any other Loan Document.

         7.19 Customer and Trade Relations. There exists no actual or threatened
termination, cancellation or limitation of, or any modification or change in,
the business relationship between any Borrower and any customer or any group of
customers whose purchases individually or in the aggregate are material to the
business of such Borrower, or with any material supplier, and there exists no
present condition or state of facts or circumstances which would materially
affect adversely any Borrower or prevent such Borrower from conducting such
business after the consummation of the transactions contemplated by this
Agreement in substantially the same manner in which it has heretofore been
conducted.

         7.20 Other Names. The businesses conducted by Borrowers have not been
conducted under any corporate, trade or fictitious name other than those names
listed on Schedule 7.20 hereto.

                                      -52-
<PAGE>

         7.21 Tax Obligations. To the best of its knowledge, each Borrower has
filed complete and correct federal, state and local tax reports and returns
required to be filed by it, prepared in accordance with any applicable laws or
regulations, and except for extensions duly obtained, has either duly paid all
taxes, duties and charges owed by it, or made adequate provision for the payment
thereof, unless such Borrower is contesting in good faith, by an appropriate
proceeding, the validity, amount or imposition of the above while maintaining
adequate reserves to cover the above, and such contest does not have or cause a
material adverse change in such Borrower's financial condition or operations and
does not impair such Borrower's ability to perform its Obligations. There are no
material unresolved questions or claims concerning any tax liability of any
Borrower. None of the transactions contemplated hereby or under any agreements
referred to hereunder will result in any material tax liability for any Borrower
or result in any other material adverse tax consequence for any Borrower.

         7.22 Employee Controversies. Each Borrower has withheld all amounts
required by law or agreement to be withheld by it from the wages, salaries and
other payments to its employees, and is not liable for any arrears or wages or
any taxes or penalties for failure to comply with the foregoing. Except as set
forth on Schedule 7.22 hereto, none of the Borrowers is a party to any
collective bargaining agreements. There are no pending, threatened or
anticipated (i) employment discrimination or unfair labor practice charges or
complaints against or involving any Borrower before any federal, state or local
board, department, commission or agency, (ii) material grievances, disputes or
controversies with any union or any other organization of any Borrower's
employees, (iii) pending or threatened strikes, slowdowns, work stoppages or
lockouts or (iv) any asserted pending demands for collective bargaining by any
union or organization or efforts to organize any of the employees of any
Borrower.

         7.23 Investment Company Act. None of the Borrowers is an "investment
company" or a company "controlled" by an investment company within the meaning
of the Investment Company Act of 1940, as amended.

         7.24 Subsidiaries. As of the Closing, the Borrowers have no
Subsidiaries other than those specifically disclosed on Schedule 7.24 hereto.

         7.25 Full Disclosure. To the best of Borrowers' knowledge after
diligent inquiry, this Agreement, the financial statements delivered in
connection herewith, and the representations and warranties of Borrowers herein
and in any other document delivered or to be delivered by or on behalf of
Borrowers, do not and will not contain any untrue statement of a material fact
or omit a material fact necessary to make the statements contained therein or
herein, in light of the circumstances under which they were made, not
misleading. To the best knowledge of Borrowers after diligent inquiry and
investigation, there is no material fact which Borrowers have not disclosed to
Agent in writing which materially and adversely affects or, so far as Borrowers
can foresee, could materially and adversely affect the assets, business,
prospects, profits, or condition (financial or otherwise) of Borrowers, the
rights of Agent or the ability of Borrowers to perform this Agreement.

         7.26 Regulation U. None of the Borrowers is engaged in the business of
extending credit for the purpose of purchasing or carrying margin stock (within
the meaning of Regulation

                                      -53-
<PAGE>

U of the Board of Governors of the Federal Reserve System), and no part of the
proceeds of any of the Loans made hereunder will be used to purchase or carry
any margin stock or to extend credit to others for the purpose of purchasing or
carrying any such margin stock.

         7.27 Capital Stock. The authorized capital stock of Borrowers is set
forth on Schedule 7.27 hereof. There are no shares of common stock held as
treasury shares. The designations, powers, preferences, rights, qualifications,
limitations and restrictions in respect of each class and series of authorized
capital stock of each Borrower is as set forth in its respective Articles of
Incorporation, and all such designations, powers, preferences, rights,
qualifications, limitations, and restrictions are valid, binding and enforceable
and in accordance with all applicable laws. All outstanding shares of capital
stock of the Borrowers have been duly authorized and validly issued and are
fully paid and non-assessable. All of the outstanding securities of Borrowers
were issued in compliance with all applicable federal and state securities laws.
None of the outstanding securities of Borrowers have been issued in violation of
any preemptive rights, rights of first refusal or similar rights. Except as set
forth on Schedule 7.27, there are no outstanding options, warrants, convertible
securities, calls, rights, commitments, preemptive rights or agreements or
instruments or understandings of any character, to which any Borrower is a party
or by which any Borrower is bound, obligating any Borrower to issue, deliver or
sell, or cause to be issued, delivered or sold, contingently or otherwise,
additional shares of capital stock of such Borrower or any securities or
obligations convertible into or exchangeable for such shares or to grant, extend
or enter into any such preemptive right or agreement. There are no outstanding
obligations, contingent or otherwise, of any Borrower to purchase, redeem or
otherwise acquire any capital stock of such Borrower, except in connection with
the CPI Stock Option Plan. Except as set forth on Schedule 7.27, there are no
voting trust agreements or other contract, agreements, arrangements,
commitments, plans or understandings restricting or otherwise relating to
voting, dividend or other rights with respect to any Borrower's capital stock.

         7.28 Occupational Safety and Health. None of the Borrowers has, nor, to
the Borrowers' knowledge, has any Affiliate received any notice, citation,
claim, assessment or proposed assessment as to or alleging any material
violation by any Borrower or any such Affiliate from any division of any Federal
or state occupational safety and health administrations or agencies and no such
violation presently exists. None of the Borrowers is, nor, to the best of the
Borrowers' knowledge, no Affiliate is a party to any pending dispute with
respect to the Borrowers' or any Affiliate's compliance with any Federal or
state occupational safety and health laws.

8.       NEGATIVE COVENANTS

         Borrowers will not, without the Majority Lender's prior written
consent:

         8.1 Sale, Transfer or Encumbrance of Assets. Sell, lease, pledge,
encumber, grant or permit a Lien on (other than Permitted Liens as defined below
in this Section 8.1), or otherwise dispose of or transfer, whether by sale or
otherwise, any of Borrowers' assets, except for (A) sales of Inventory in the
ordinary course of business, (B) sales of items of Equipment which are obsolete,
worn-out or otherwise not useable in Borrowers' business, or (C) the sale of the
land and building owned by Teltrend and located at 3740 Stem Road, St. Charles,
Illinois, so long as

                                      -54-
<PAGE>

(i) no Event of Default which is an Uncured Default exists, and (ii) the
proceeds of any permitted sale shall be applied to the Obligations or to the
replacement of the Equipment being disposed of with substantially similar
Equipment having a comparable value within 180 days of such sale or disposition.
For purposes of this Agreement, "Permitted Liens" shall mean any or all of the
following: (i) Liens to Agent; (ii) Liens arising out of judgments or awards in
respect of which any Borrower shall in good faith be prosecuting an appeal or
proceedings for review and in respect of which such Borrower shall have secured
a subsisting stay of execution pending such appeal or proceedings for review,
provided such Borrower shall have set aside reserves which the Agent reasonably
deems adequate with respect to such judgment or award; (iii) Liens for taxes,
assessments or governmental charges or levies, provided payment thereof shall
not be past due or for taxes being contested in good faith and by appropriate
proceedings and with respect to which adequate reserves are being maintained and
which Liens do not have priority over the Lien of the Agents; (iv) deposits,
Liens or pledges to secure payments of worker's compensation, unemployment
insurance or other forms of governmental insurance or benefits or to secure
performance of tenders, statutory obligations, leases and contracts (other than
for borrowed money) arising in the ordinary course of business; (v) mechanics',
workmen's, repairmen's, warehousemen's, vendors' or carriers' Liens, or other
similar statutory Liens, or any easements with respect thereto, not to exceed an
aggregate amount of $250,000 at any time outstanding, arising in the ordinary
course of business and securing sums which are not past due, or deposits or
pledges to obtain the release of any such Liens; (vi) statutory landlords' liens
under leases to which any Borrower is a party; (vii) such capital leases as are
listed on Schedule 8.1 hereto; and (viii) subject to Section 8.6 and the other
provisions of this Agreement, purchase money Liens on Property acquired in the
ordinary course of business, to finance or secure a portion of the purchase
price thereof, provided that in each case such lien shall be limited to the
Property so acquired and the liability secured by such lien does not exceed
either the purchase price or the fair market value of the asset acquired and,
provided further, the aggregate principal amount of the indebtedness secured by
such liens and the aggregate principal amount of the indebtedness incurred in
connection with the capital leases set forth in subsection (vii) hereof, does
not exceed $1,000,000 in the aggregate.

         8.2 Name or Identity Change. Change any Borrowers' name, business
structure, or identity, or add any new fictitious name or create any
Subsidiaries.

         8.3 Guaranties. Subject to the provisions of Section 8.5 hereof,
guarantee or otherwise become in any way liable with respect to the obligations
of any third party except by endorsement of instruments or items of payments for
deposit to the general account of Borrowers or which are transmitted or turned
over to Agent.

         8.4 Change in Business. Enter into any business not related to
Borrowers' present businesses or make any change in any Borrowers' financial
structure or in any of its business objectives, purposes, or operations which
could adversely affect the ability of such Borrower to repay the Obligations,
the value of the Collateral or Agent's rights and remedies hereunder, or create
any Subsidiary.

         8.5 Loans and Investments. Make any advance, loan, investment or
material acquisition of assets other than (without duplication, the following):

                                      -55-
<PAGE>

                  (a) the purchase by Westell Technologies, Inc., from time to
time during the term of this Agreement, of shares of CPI in transactions having
an aggregate purchase price not to exceed $200,000 for all such transactions,
from departing employees of CPI who owned such shares as of October 31, 1999;

                  (b) Acquisitions in an amount less than $4,000,000 per
Acquisition and Acquisitions not exceeding $12,000,000 in the aggregate during
the term of this Agreement; provided, that: (a) the Person whose stock or assets
is being acquired shall be in substantially the same line of business as
Borrowers, (b) after giving effect to the Acquisition, there shall exist no
Potential Default or Event of Default, (c) immediately after giving effect to
such acquisition, the Borrowers are in pro forma compliance with all the
financial ratios and restrictions set forth in Section 11, and (d) the Person
whose stock or assets is being acquired shall have consented to such
Acquisition. Any Acquisitions in an amount in excess of $4,000,000 shall require
the prior written approval of the Majority Lenders.

                  (c) contributions by a Borrower to the capital of any of its
Subsidiaries, or by any such Subsidiary to the capital of any of its
Subsidiaries;

                  (d) in the ordinary course of business, Investments by the
Borrowers in any Subsidiary or by any Subsidiary in the Borrowers, by way of
intercompany loans, advances or guaranties;

                  (e) Cash Equivalent Investments;

                  (f) bank deposits in the ordinary course of business; provided
that the aggregate amount of all such deposits (excluding amounts in payroll
accounts or for accounts payable, in each case to the extent that checks have
been issued to third parties) which are maintained with any bank other than a
Lender shall not at any time exceed $100,000;

                  (g) Investments in securities of Account Debtors received
pursuant to any plan of reorganization or similar arrangement upon the
bankruptcy or insolvency of such Account Debtors; and

                  (h) Investments listed on Schedule 8.5;

provided that (x) any Investment which when made complies with the requirements
of the definition of the term "Cash Equivalent Investment" may continue to be
held notwithstanding that such Investment if made thereafter would not comply
with such requirements; (y) no Investment otherwise permitted by clause (b) or
(d) shall be permitted to be made if, immediately before or after giving effect
thereto, any Event of Default or Uncured Default exists.

         8.6 Indebtedness. Incur any Indebtedness, other than (i) the
Obligations of the Borrowers hereunder; (ii) additional Indebtedness shown on
Schedule 8.6 hereto; (iii) Indebtedness arising or accruing in the ordinary
course of business which Indebtedness does not give rise to a Lien or other
security interest, other than a Permitted Lien; and (iv) Indebtedness arising
under a Swap Contract.

                                      -56-
<PAGE>

         8.7 Prepayments. (i) Prepay any Indebtedness for money borrowed by any
Borrower or any Indebtedness secured by any of their assets (except for the
Obligations), (ii) enter into or modify any agreement as a result of which the
terms of payment of any of the foregoing Indebtedness are amended or modified in
a manner which would accelerate its payment.

         8.8 Affiliate Transactions. Enter into any agreement or arrangement,
written or oral, directly or indirectly, with an Affiliate, or provide services
or sell goods to, or for the benefit of, or pay or otherwise distribute monies,
goods or other valuable consideration to, an Affiliate, except upon fair and
reasonable terms no less favorable to the Borrowers than terms in a comparable
arm's length transaction with an unaffiliated Person and except for existing
intercompany debt.

         8.9 Consolidations, Mergers. Merge or consolidate with any other
Person, and no Borrower shall dissolve, enter into any joint venture or become a
partner in any partnership.

         8.10 Transactions Not in the Ordinary Course; Liquidations. Enter into
any transaction not in the usual course of Borrowers' business or adopt or
undertake a plan of liquidation or dissolution.

         8.11 Suspension of Business. Suspend or terminate the transaction of
its business or abandon the Collateral.

         8.12 Distributions. Pay, directly or indirectly, any cash, stock or
other securities or property dividends or distributions to its shareholders, or,
purchase, redeem, retire or otherwise acquire for value any shares of its
capital stock or any warrants, rights or options to acquire such shares, except
in accordance with the terms of the CPI Stock Option Plan requiring the
redemption by CPI of the shares of its stock under the circumstances set forth
therein.

         8.13 ERISA. Adopt or agree to contribute to any Pension Plan that is
intended to be tax-qualified under Section 401 (a) of the IRC, except for those
Plans currently in effect on the date hereof and listed on Schedule 8.13.

         8.14 Change of Control. Undergo a Change of Control or the transfer of
interests in Borrowers or any partnerships or other entities which are direct or
indirect equity holders or beneficial owners of Borrowers (each of the
foregoing, a "Change of Control Event").

         8.15 Bank Accounts. Establish any depository, operating or other
account at any financial institution other than LaSalle or any of the other
Lenders.

         8.16 Operating Lease Obligations. Create or suffer to exist any
obligations for the payment of rent for any property under any Operating Lease
in an amount not to exceed (i) $6,500,000 in the aggregate during their 2001
Fiscal Year, (ii) $7,000,000 in the aggregate during their 2002 Fiscal Year,
(iii) $7,500,000 in the aggregate during their 2003 Fiscal Year and during any
Fiscal Year thereafter.

         8.17 Capital Expenditures. Make or incur any Capital Expenditures in
excess of (i) $27,000,000 during their 2001 Fiscal Year, (ii) $21,000,00 during
their 2002 Fiscal Year, and

                                      -57-
<PAGE>

(iii) $25,000,000 during their 2003 Fiscal Year.

         8.18 Inconsistent Agreements. Enter into any agreement containing any
provision which would (a) be violated or breached by any borrowing by the
Borrowers hereunder or by the performance by the Borrowers of any of their
obligations hereunder or under any other Loan Document, (b) prohibit the
Borrowers from granting to the Agent, for the benefit of the Lender, a Lien on
any of their assets or (c) create or permit to exist or become effective any
encumbrance or restriction on the ability of any Subsidiary to (i) pay dividends
or make other distributions to the Borrowers or any other applicable Subsidiary,
or pay any Indebtedness owed to the Borrowers or any other Subsidiary, (ii) make
loans or advances to the Borrowers or (iii) transfer any of its assets or
properties to the Borrowers.

         8.19 Business Activities. Engage in, nor permit any Subsidiary to
engage in, any line of business other than the businesses engaged in on the date
hereof and businesses reasonably related thereto.

         8.20 Fiscal Year. Change its Fiscal Year.

9.       AFFIRMATIVE COVENANTS - GENERAL

         So long as any Obligations are outstanding or any Commitment remains
outstanding, each Borrower covenants and agrees that:

         9.1 Payments. The Borrowers shall pay, or cause to be paid, when due
all principal and interest under the Notes and all other Obligations in respect
of this Agreement, the Notes and the Loan Documents.

         9.2 Taxes. All assessments and taxes, whether real, personal or
otherwise, due or payable by, or imposed, levied or assessed against, any
Borrower or any of its property have been paid, and shall hereafter be paid in
full, before delinquency, except those assessments and taxes the validity of
which is being contested in good faith by appropriate proceedings, do not impair
the priority of Agent's liens on the collateral and as to which such Borrowers
shall have set aside adequate reserves (as determined by Agent). Borrowers will
make timely payment or deposit of all FICA payments and withholding taxes
required of them by applicable laws, and will, upon request, furnish Agent with
proof satisfactory to it that Borrowers have made such payments or deposits.
Agent may conclusively rely on the usual statements of the amount owing or other
official statements issued by the appropriate governmental agency.

         9.3 Insurance. The Borrowers shall, at their own expense, maintain and
provide satisfactory evidence to the Lenders as to, insurance on the Collateral
and other business Properties, all in such form, substance and amounts and with
such insurance companies or associations acceptable to the Agent in its
discretion, reasonably exercised, and any insurance policies issued in
connection with the above shall contain endorsements which name the Agent as
additional insured and lender loss payee, as its interest may appear, with
respect to all of the Collateral and which provide that said policies shall not
be cancelled, terminated, amended or modified without thirty (30) days' prior
written notice to the Agent and that no act or default of the Borrowers or any
Person shall affect the right of the Agent to recover under such policies in

                                      -58-
<PAGE>

case of loss or damage. Agent hereby approves of Borrowers' current insurance
coverage. The Borrowers shall deliver to the Agent a copy of the insurance
policies and certificates for each such policy of insurance. The Borrowers shall
notify the Agent within thirty (30) days of obtaining any new policy or increase
of coverage under any existing policy. The Borrowers hereby irrevocably appoint,
designate and constitute the Agent and its officers, employees and agents, as
the Borrowers' attorney-in-fact for the purpose of making, settling and
adjusting, in good faith, claims in excess of $100,000 under any and all such
insurance policies and of endorsing the Borrowers' names on any checks, drafts,
instruments or other items of payment received by any Borrower or the Agent
pursuant to such insurance policies. If the Borrowers fail to maintain any
insurance or policies of insurance as required above, or fail to pay any premium
related thereto, the Agent may obtain or pay the same, but shall be under no
obligation to do so. In the event the Agent obtains such insurance, all sums so
paid and any expenses incurred in connection therewith shall be part of the
Obligations payable by the Borrowers to the Agent on demand as an Out-of -Pocket
Expense. The Borrowers shall also maintain in effect, in addition to the above
mentioned insurance covering the Collateral, such other insurance in such
amounts with such insurers and covering such risks as now maintained by the
Borrowers and shall, upon request by the Agent, provide the Agent with
certificates or policies evidencing such insurance, with Agent named as
"Lender's Loss Payee". In the event that any insurance proceeds received by the
Agent pursuant to this Section 9.3 exceed the amounts necessary to repay all
Indebtedness of the Agent with respect to the Collateral to which such insurance
proceeds relate, the Agent shall return to the Borrowers the amount of such
excess.

         9.4 Litigation. The Borrowers shall immediately notify Agent in writing
of (i) any suit in law or equity or administrative proceeding involving money or
property, and seeking damages in excess of $100,000, and (ii) otherwise which
may materially and adversely affect Borrowers' operations, financial condition
or business or Agent's security interest in any of the Collateral.

         9.5 Books and Records. Each Borrower at all times hereafter shall keep
proper books of record and account in which full and true entries will be made
of all dealings or transactions with-respect to or in relation to the business
and affairs of such Borrower, and shall maintain a standard and modern system of
accounting, in accordance with Generally Accepted Accounting Principles with
ledger and account cards and/or computer tapes, discs, printouts, and records
pertaining to the Collateral which contain information as may from time to time
be reasonably requested by Agent. Borrowers shall notify Agent in writing if any
Borrower modifies or changes its method of accounting or enters into, modifies,
or terminates any agreement presently existing, or at any time hereafter entered
into with any third party accounting firm and/or service bureau for the
preparation and/or storage of Borrowers' accounting records; provided, that such
accounting firm and/or service bureau agrees to provide to Agent information
regarding the Collateral and Borrowers' financial condition. Borrowers agree to
permit Agent, or any of the Lenders, and any of their employees, officers or
agents, at all times after the occurrence of an Event of Default, and otherwise
upon three (3) Business Days' prior notice, during Borrowers' usual business
hours, or the usual business hours of third Persons having Control thereof, to
have access to and examine all of Borrowers' Books relating to the Collateral,
the Obligations, Borrowers' financial condition and the results of Borrowers'
operations, and, in connection therewith, permit Agent or any of its agents,
employees or officers to copy and make extracts

                                      -59-
<PAGE>

therefrom.

         9.6 Compliance with Laws. Borrowers shall comply in all material
respects with all Federal, State, local and foreign laws, rules and regulations,
including, but not limited to the Securities Act of 1933, the Securities
Exchange Act of 1934, the Fair Labor Standards Act, Environmental Laws, laws
relating to income, unemployment, payroll or social security taxes and pension
funds and retirement benefit programs as required by ERISA.

         9.7 Expense Reimbursements. Borrowers shall immediately and without
demand, reimburse Agent for all sums expended by Agent which constitute
Out-of-Pocket Fees and Costs and Borrowers hereby authorize and approve all
advances and payments by Agent for items constituting Out-of-Pocket Fees and
Costs. Agent shall make all good faith reasonable attempts to notify Borrowers
of such reimbursement, but the failure of Agent to so notify Borrowers shall
impose no obligation or liability of any kind upon Agent. Borrowers shall pay
all costs and expenses of Agent or Lender, including, without limitation,
attorney's fees and expenses, incurred in connection with enforcing this
Agreement or any Loan Document. Agent may charge any or all of such amounts
expended to Borrowers' Loan Account and such amounts shall be part of the
Obligations subject to interest at the Reference Rate Option or Default Rate, as
applicable.

         9.8 ERISA Reportable Events. Borrowers shall furnish to Agent: (a) as
soon as possible, but in no event later than thirty (30) days after any Borrower
knows or has reason to know that any Reportable Event with respect to any
Benefit Plan has occurred, a statement of the Chief Financial Officer of such
Borrower setting forth the details concerning such Reportable Event and the
action which Borrowers propose to take with respect thereto, together with a
copy of the notice of such Reportable Event given to the PBGC, if a copy of such
notice is available to Borrowers; (b) promptly after the filing thereof with the
United States Internal Revenue Service or the PBGC, copies of each annual report
with respect to each Benefit Plan; (c) promptly after receipt thereof, a copy of
any notice of any potential material liability, adverse determination letter,
ruling or opinion any Borrower may receive from the PBGC or the Internal Revenue
Service with respect to any Benefit Plan; (d) when the same is made available to
participants in a Benefit Plan, all notices of a significant reduction in the
rate of benefit accrual or plan termination to the participants by the
administrator of such Benefit Plan; and (e) promptly after receipt thereof, any
notice from any Multiemployer Plan to which any Borrower or any ERISA Affiliate
of such Borrower contributes which quantifies any actual or potential withdrawal
liability which will or may be imposed upon the withdrawal of any Borrower or
any ERISA Affiliate of such Borrower from such Multiemployer Plan.

         9.9 Preservation of Corporate Existence. Each Borrower shall preserve
and maintain in full force and effect: (i) its corporate existing and good
standing under the laws of the state of its incorporation; and (ii) all
governmental rights, privileges, qualifications, permits, licenses and
franchises necessary or desirable in the normal conduct of its business. Each
Borrower will generally continue the substantially same lines of business as
those being presently conducted and related businesses in the telecommunications
area.

         9.10 Instruments and Chattel Paper. Upon the written request of Agent,
the Borrowers

                                      -60-
<PAGE>

will stamp or otherwise mark all chattel paper and Instruments now owned or
hereafter acquired by any of them, in which the Agent has a first and prior
perfected security interest, to reflect that the same are subject to the Agent's
security interest and will immediately thereafter deliver or cause such chattel
paper and Instruments to be delivered to the Agent or its agent, with
appropriate endorsement, assignment or stock power transfer or assignment, with
full recourse to the Borrowers, to vest title and possession in the Agent.

         9.11 Leases. Each Borrower shall maintain and comply in all material
respects with all leases covering the property used by such Borrower in
accordance with their terms so as to prevent any default thereunder which may
result in the exercise or enforcement of any landlord's or other lien against
such Borrower unless such Borrower is contesting in good faith, by an
appropriate proceeding, the validity, amount or imposition of any lease charges
or expenses while maintaining reserves, deemed adequate by the Agent in its sole
and complete discretion to cover the above, and such contest does not have or
cause material adverse changes in any Borrower's financial condition or
operations and does not impair any Borrower's ability to perform the
Obligations.

         9.12 Defense of Collateral. The Borrowers shall pay, or cause to be
paid, when due, all material Indebtedness, lawful claims or demands with respect
to the Collateral which, if unpaid, might result in, or permit the creation of,
any Lien or encumbrance on the Collateral, including, without limitation, all
lawful claims for labor, materials and supplies, and, in general, do and cause
to be done, everything reasonably necessary to fully preserve the rights and,
interests of Agent under this Agreement and the other Loan Documents. In
addition, the Borrowers shall at all times defend Agent's rights and interests
in and to the Collateral, and the priority position of said rights and interests
against any and all claims of any person adverse to Agent and take all necessary
or appropriate actions to give effect to Agent's priority of rights and
interests contemplated by this Agreement and the other Loan Documents.

         9.13 Environmental Matters - Indemnification. Borrowers shall take or
cause to be taken all actions which are reasonably necessary, in the judgment of
the Agent, to comply in all material respects with the requirements of all
Environmental Laws including, without limitation, all filing and reporting
requirements thereof. Borrowers hereby agree to indemnify, hold harmless and
reimburse Agent and the Lenders for any and all loss, damage, expenses or costs
of any kind or nature arising out of or incurred in connection with any prior,
existing or future violations by Borrowers of any Environmental Laws.

         9.14 Ownership of CPI. Westell Technologies, Inc. shall at all times
own, beneficially and of record, at least fifty-one percent (51%) of the issued
and outstanding stock of CPI.

         9.15 SEC Filings. Borrowers shall make all filings required by the SEC
no later than the due date of each such required filing.

         9.16 Employee Benefit Plans. Maintain each Pension Plan in substantial
compliance with all applicable requirements of law and regulations.

                                      -61-
<PAGE>

         9.17 Environmental Matters. (a) If any Release or Disposal of Hazardous
Materials shall occur or shall have occurred on any real property or any other
assets of the Borrowers, the Borrowers shall cause the prompt containment and
removal of such Hazardous Materials and the remediation of such real property or
other assets as necessary to comply with all Environmental Laws and to preserve
the value of such real property or other assets. Without limiting the generality
of the foregoing, the Borrowers shall comply with any valid Federal or state
judicial or administrative order requiring the performance at any real property
of the Borrowers or any Subsidiary of activities in response to the Release or
threatened Release of a Hazardous Materials.

                  (b) To the extent that the transportation of "hazardous waste"
as defined by RCRA is permitted by this Agreement, the Borrowers shall dispose
of such hazardous waste only at licensed disposal facilities operating in
compliance with Environmental Laws.

                  9.18 Reports to the SEC and to Shareholders. Within ten (10)
Business Days of the filing or sending thereof, copies of all regular, periodic
or special reports of the Borrowers or any Subsidiary filed with the SEC; copies
of all registration statements of the Borrowers or any Subsidiary filed with the
SEC (other than on Form S-8); and copies of all proxy statements or other
communications made to security holders generally.

10.      AFFIRMATIVE COVENANTS - REPORTING

         Borrowers shall furnish or cause to be furnished to Agent and the
Lenders the following:

         10.1 Borrowing Base Certificate; Aging Reports. As soon as practicable
and in any event within thirty (30) days following the end of each month,
Borrowers shall provide Agent with (i) a Borrowing Base Certificate in the form
of Exhibit A hereto; (ii) an Aging Report; and (iii) an Inventory Report.

         10.2 Compliance Certificate. As soon as practicable and in any event
within forty-five (45) days following the end of each Fiscal Quarter, a
certificate reflecting Borrowers' compliance with the financial covenants set
forth in Section 11 of this Agreement. Such certificate shall be in a form and
with such specificity as is satisfactory to Agent and shall contain such
additional information as Agent may reasonably require concerning financial
covenant calculations included, described or referred to in such certificate and
any other documents in connection therewith requested by Agent.

         10.3 Financial Statements. Borrowers shall further cause to be
furnished to Agent:

                  (a) Quarterly Financial Statements. As soon as practicable and
in any event within forty-five (45) days following the end of Fiscal Quarter;
(i) statements of income and statements of cash flow of Borrowers for each such
Fiscal Quarter and for the period from beginning of the then current Fiscal Year
of Borrowers to the end of such Fiscal Quarter; (ii) balance sheets of Borrowers
as of the end of such Fiscal Quarter; and (iii) with respect to such statements
of income and balance sheets, prepared on a consolidated basis, setting forth in
comparative form, figures for the corresponding periods in the preceding fiscal
year of Borrowers, all in reasonable detail and certified by the Chief Financial
Officer of Westell

                                      -62-
<PAGE>

Technologies, Inc. that such statements fairly present the financial condition
of Borrowers in accordance with Generally Accepted Accounting Principles,
subject to changes resulting from normal year-end adjustments and the absence of
footnotes, together with detailed computations of Borrowers' compliance with the
covenants set forth in this Agreement.

                  (b) Yearly Financial Statements. As soon as practicable and in
any event within ninety (90) days after the end of each Fiscal Year of
Borrowers, (i) consolidated statements of income of Borrowers for such Fiscal
Year, and a balance sheet of Borrower as of the end of such Year, and (ii)
statements of cash flow of Borrower for such Year, all setting forth in
comparative form, corresponding figures for the period covered by the preceding
annual audit and as of the ends of the preceding Fiscal Year of Borrowers, all
in reasonable detail and in scope in accordance with audits performed for
Borrowers in prior years and examined and certified by independent certified
public accountants of recognized national standing selected by Borrowers and
satisfactory to Agent, whose opinion shall be unqualified and shall be in scope
in accordance with audits performed for Borrowers in prior years, in form and
substance satisfactory to Agent, together with a copy of Borrowers' 10-K, as
filed with the Securities and Exchange Commission. Together with each delivery
of such annual financial statements, Borrowers shall deliver to Agent a
certificate of the accountants who performed the audit in connection with such
statements stating that in making the audit necessary to the issuance of a
report on such financial statements, they have obtained no knowledge of any
Event of Default, or, if such accountants have obtained knowledge of an Event of
Default, specifying the nature and period of existence thereof.

                  (c) Form 10-Q. As soon as practicable and, in any event,
within forty-five (45) days after the end of each Fiscal Quarter, beginning with
the quarter ended June 30, 2000, a copy of Borrower's 10-Q, as filed with the
Securities and Exchange Commission.

                  (d) Interim Reports. Promptly upon receipt and, in any event,
within fifteen (15) days after receipt thereof, copies of all interim and
supplemental financial reports submitted to the Borrowers by independent
certified public accountants in connection with any interim review of the books
and records of the Borrowers made by such accountants, if any.

                  (e) Events of Default. Together with the financial statements
for each Fiscal Year, a certificate of Borrowers executed by an authorized
officer of Borrowers stating whether any Event of Default, or Potential Default,
currently exists and is continuing and what action, if any, the Borrowers are
taking or propose to take with respect thereto.

                  (f) Budget. As soon as practicable and, in any event, prior to
Borrowers' Fiscal Year-end, a budget for the following Fiscal Year.

                  (g) Notice of Events of Default. Promptly after the occurrence
thereof, notice, in writing, of any Event of Default, or Potential Default, and
what action, if any, the Borrowers are taking or propose to take with respect
thereto.

                  (h) Change in Location. Notice of any change in location of
any places of business or the Chief Executive Office Location of the Borrowers
or of the Additional Inventory

                                      -63-
<PAGE>

Locations of the Borrowers at least five (5) Banking Days prior to such change.

                  (i) Adverse Change. Promptly after the occurrence thereof,
notice, in writing, of any other matter which has resulted in, or might result
in, a materially adverse change in the financial or other condition or
operations of any Borrower or its ability to fully perform its Obligations under
the terms and conditions of this Agreement and the Loan Documents or its ability
to repay the Notes.

                  (j) Other Information. With reasonable promptness, such other
information respecting the business, properties or the condition or operations,
financial or otherwise, of the Borrowers, as the Lenders may from time to time
reasonably request in writing.

                  (k) Other Default. Promptly after the occurrence thereof,
notice, in writing, of any material default under any obligation of any Borrower
secured by a Permitted Lien and what action, if any, the Borrowers are taking or
propose to take with respect thereto.

All financial statements delivered to Agent and the Lenders pursuant to the
requirements of this subsection (except where otherwise expressly indicated)
shall be prepared in accordance with Generally Accepted Accounting Principles as
provided in this Agreement.

         10.4 Accounting Information. Borrowers authorize Agent and Lenders to
discuss the financial condition of Borrowers with Borrowers' independent public
accountants and agree that such discussion or communication shall be without
liability to either Agent or Borrowers' independent public accountants. Prior to
the occurrence of a Potential Default or Event of Default, Agent and any Lender
shall use its best efforts to notify Borrowers of Agent's and such Lender's
discussions with Borrowers' accountants. Borrowers shall deliver a letter
addressed to such accountants authorizing them to comply with the provisions of
this subsection, and authorizing Agent to rely on financial statements of
Borrowers issued by such accountants, which letter shall be acknowledged and
consented to in writing by such accountants.

         10.5 Other Information and Changes. Borrowers shall promptly supply
Agent and Lenders with such other information concerning their affairs as Agent
and any Lender may request from time to time hereafter, and shall promptly
notify Agent of any material adverse change in Borrowers' financial condition
and of any condition or event which constitutes a breach of or an Event of
Default under this Agreement.

11.      AFFIRMATIVE COVENANTS - FINANCIAL

         11.1 Interest Coverage Ratio. Borrower shall have (i) Fiscal
Year-to-date Interest Coverage Ratio of not less than 3.00:1.00 on September 30,
2000 and of not less than 3.50:1.00 on December 31, 2000, and (ii) an Interest
Coverage Ratio, measured on a rolling basis as of the end of each calendar
quarter, including such calendar quarter and the three (3) consecutive calendar
quarters immediately preceding such calendar quarter, commencing January 1, 2001
and at all times thereafter of 4.00:1.00.

         11.2 EBITDA. Borrowers shall have (i) a minimum Fiscal Year-to-date
EBITDA of not less $6,500,000 on September 30, 2000, and of not less than
$11,250,000 on December 31,

                                      -64-
<PAGE>

2000, and (ii) on each date set forth below, a minimum EBITDA of not less than
the EBITDA set forth opposite such date set forth below, measured on a rolling
twelve-month basis as of the end of the Fiscal Quarter ending on such date:

         Date                                               EBITDA
         ----                                               ------

         March 31, 2001                                     $17,000,000
         June 30, 2001                                      $21,500,000
         September 30, 2001                                 $29,250,000
         December 31, 2001                                  $32,000,000
         March 31, 2002                                     $35,500,000
         June 30, 2002                                      $37,000,000
         September 30, 2002                                 $38,500,000
         December 31, 2002                                  $40,000,000
         March 31, 2003                                     $42,000,000
         June 30, 2003                                      $42,000,000

         11.3 Net Worth. Borrowers shall maintain at all times, measured on a
quarterly basis, a Net Worth of not less than (i) $250,000,000 plus (ii) fifty
percent (50%) of Borrowers' positive Net Income for each Fiscal Quarter ending
on and after September 30, 2000.

12.      EVENTS OF DEFAULT

         Any one or more of the following shall constitute an Event of Default
by Borrowers under this Agreement:

         12.1 Payment. If Borrowers fail to pay when due and payable or when
declared due and payable, all or any portion of the Obligations owing to Agent
or Lenders (whether of principal, interest, taxes, reimbursement of
Out-of-Pocket Fees and Costs, or otherwise) which is not cured within five (5)
days of when due or payable.

         12.2 Non-Compliance with Loan Documents.

                  (a) Failure by the Borrowers to comply with or to perform any
covenant set forth in Sections 8.1, 8.5, 8.6, 8.9, 8.12, 9.4, 9.8, 9.9, 11.1,
11.2, or 11.3; or

                  (b) Failure by the Borrowers to comply with or to perform any
other provision of this Agreement or any other Loan Document (and not
constituting an Event of Default under any other provision of this Section 12)
and continuance of such failure described in this clause (b) for 30 days.

         12.3 Breach of Representation. If any warranty or representation now or
hereafter made by any Borrower hereunder or by any other party to the Loan
Documents under the Loan Documents, is untrue or incorrect in any material
respect or fails to state a material fact necessary to make such warranty or
representation not misleading in light of the circumstances in which it was
made, or any schedule, certificate, statement, report, financial data, notice or
writing furnished to the Agent at any time by the Borrowers or by a party or
signatory to the Loan Documents is untrue or incorrect in any material respect
or fails to state a material fact

                                      -65-
<PAGE>

needed to make the foregoing not misleading in light of the circumstances in
which the foregoing were furnished, on the date as of which the facts set forth
therein are stated or certified.

         12.4 Other Material Obligations. Default in the payment when due, or in
the performance or observance of, any material obligation of, or condition
agreed to by, the Borrowers with respect to any material purchase or lease of
goods or services where such default, singly or in the aggregate with all other
such defaults, might reasonably be expected to have a Material Adverse Effect.

         12.5 Pension Plans. (i) Institution of any steps by the Borrowers or
any other Person to terminate a Pension Plan if as a result of such termination
the Borrowers could be required to make a contribution to such Pension Plan, or
could incur a liability or obligation to such Pension Plan, in excess of
$100,000; (ii) a contribution failure occurs with respect to any Pension Plan
sufficient to give rise to a Lien under Section 302(f) of ERISA; or (iii) there
shall occur any withdrawal or partial withdrawal from a Multiemployer Pension
Plan.

         12.6 Judgments. If any judgment or order requiring payment of monies in
excess of $250,000 which is not covered by insurance, shall be rendered against
any Borrower, and such judgment or order shall remain unsatisfied or
undischarged and in effect for thirty (30) consecutive days without a stay of
enforcement or execution thereof or posting of a bond pending appeal.

         12.7 Insolvency and Related Proceedings. If any Borrower (i) authorizes
or makes an assignment for the benefit of creditors; (ii) generally shall not
pay its debts as they become due; (iii) shall admit in writing its inability to
pay its debts generally as they come due; or (iv) shall authorize or commence
(whether by the entry of an order for relief or the appointment of a receiver,
trustee, examiner, custodian or other similar official therefor or for any part
of its property) any proceeding or voluntary case under any bankruptcy,
reorganization, insolvency, dissolution, liquidation, adjustment or arrangement
of debt, receivership or similar Laws or if such proceedings are commenced or
instituted, or an order for relief or approving any petition commencing such
proceedings is entered against such Borrower, and such Borrower, by any action
or failure to act, authorizes, approves, acquiesces, or consents to the
commencement or institution of such proceedings, and such proceedings are not
dismissed within forty-five (45) days after the date of filing, commencement or
institution.

         12.8 Material Agreements. If any Borrower defaults, or a default or an
event of default occurs, under or in the performance of any material agreement,
document or instruments, whether for borrowed money or otherwise, and such
default, breach, or event of default continues beyond any applicable grace
period thereunder and the effect of which shall be to cause the holder of such
obligation, agreement, document or instrument, or the person to whom such
obligation is owed to cause such obligation to become due prior to its stated
maturity or otherwise accelerated.

         12.9 State Action. If any proceeding is instituted or commenced by any
state or officer thereof, including the States of Illinois or Delaware, the
Secretary of State of Illinois or the State of Delaware, or the Secretary of
State of or any commission or other instrumentality of the State

                                      -66-
<PAGE>

of Illinois or Delaware, seeking a forfeiture of any Borrower's Articles of
Incorporation or certificate of authority to transact business as a foreign
corporation or of a license or permit held by any Borrower necessary to the
conduct of its business, and such Borrower shall fail to vacate any order
entered in such proceeding within thirty (30) days; or if any Borrower ceases to
conduct its business as now conducted or is enjoined, restrained or in any way
prevented by court, governmental or administrative order from conducting all or
any material part of its business affairs.

         12.10 Tax Liens. If a notice of lien, levy or assessment other than a
Permitted Lien, is filed or recorded with respect to all or a substantial part
of the Collateral owned by any Borrower by the United States, or any department,
agency or instrumentality thereof, or by any state, county, municipality or
other governmental agency, or any taxes or debts owing at any time or times
hereafter to any one or more of the foregoing become a lien other than a
Permitted Lien, upon all or a substantial part of the Collateral owned by any
Borrower unless such notice or lien is removed within thirty (30) days after
filing or recording of such notice or becoming such lien.

         12.11 Insurance. If any insurer of any policy of insurance respecting a
material portion of the Collateral issues any notice of cancellation of such a
policy, or any such policy is allowed to lapse, and in either case, is not
replaced by a substitute policy having an effective date prior to or
contemporaneous with such cancellation or lapse.

         12.12 Change of Control. If (a) during any period of 24 consecutive
months individuals who at the beginning of such period constituted the Boards of
Directors of Borrowers (together with any new directors whose election to such
Boards or whose nomination for election by the stockholders of the Borrowers was
approved by a vote of a majority of the directors then sill in office who were
either directors at the beginning of such period or whose election or nomination
for election was previously so approved) cease to constitute a majority of the
Boards of Directors of Borrowers then in office or (b) if the Voting Trust
ceases to own, both legally and beneficially, at least fifty-one percent (51%)
of the issued and outstanding voting stock of Westell Technologies, Inc.

13.      RIGHTS AND REMEDIES

         13.1 Rights and Remedies Generally. Upon the occurrence of an Event of
Default by Borrowers under this Agreement and notice thereof by Agent to
Borrowers, except as hereinafter provided, Agent may, with the consent of the
Majority Lenders or under Section 17(c) hereof, and shall at the direction of
the Majority Lenders, at its sole election, without notice of its election and
without demand, do any one or more of the following, all of which are authorized
by Borrowers:

                  (a) Declare all Obligations, whether evidenced by this
Agreement, by Notes, or otherwise, immediately due and payable; provided, that
all Obligations shall be immediately due and payable without notice or demand
upon an Event of Default under Section 12.7;

                  (b) Cease advancing money or extending credit to or for the
benefit of Borrower under this Agreement, or any other agreement between
Borrowers and Agent or

                                      -67-
<PAGE>

Lenders; provided that Lenders shall cease advancing money or extending credit
immediately without notice upon an Event of Default under Section 12.7;

                  (c) Implement any reserves against Revolving Loan Availability
or availability for loans under any other agreement between Borrowers and Agent
or Lenders that Agent or Lenders shall deem appropriate in their sole discretion
from time to time;

                  (d) Terminate this Agreement as to any future liability or
obligation of Agent or Lenders but without affecting Agent or Lender's rights
and Lien in the Collateral and without affecting the Obligations owing by
Borrowers to Agent or Lenders;

                  (e) Without notice to or demand upon Borrowers, make such
payments and do such acts as Agent considers necessary or reasonable to protect
its Lien in the Collateral. Borrowers agree to assemble the Collateral if Agent
so requires, and to make the Collateral available to Agent at such location as
Agent may designate. Borrowers authorize Agent to enter the premises where the
Collateral is located, take and maintain possession of the Collateral, or any
part of it, and maintain possession of the Collateral, or any part of it, and to
pay, purchase, contest or compromise any Lien which in the opinion of Agent
appears to be prior or superior to its Lien and to pay all expenses incurred in
connection therewith;

                  (f) Agent is hereby granted a license or other right to use,
without charge, Borrowers' labels, patents, copyrights, rights of use of any
name, logo, trade secrets, trade names, trademarks, customer lists and
advertising matter, or any property of a similar nature; as it pertains to the
Collateral, in completing production of, advertising for sale and selling any
Collateral and Borrowers' rights under all licenses and all franchise agreements
shall inure to Agent's benefit;

                  (g) Ship, reclaim, recover, store, finish, maintain, repair,
prepare for sale, advertise for sale and sell (in the manner provided for
herein) the Collateral;

                  (h) Sell some or all of the Collateral at either public or
private sales, or both, by way of one or more contracts or transactions, for
cash or on terms, in such manner and at such places (including Borrowers'
premises) as is commercially reasonable in the opinion of Agent. It is not
necessary that the Collateral be present at any such sale;

                  (i) Agent shall give notice of the disposition of the
Collateral as follows:

                       (i)   Agent shall give Borrowers and each holder of a
                  Lien in the Collateral who has filed with Agent a written
                  request for notice, a notice in writing of the time and place
                  of public sale, or, if the sale is a private sale or some
                  other disposition other than a public sale is to be made of
                  the Collateral, the time on or after which the private sale or
                  other disposition is to be made;

                       (ii)  The notice to Borrowers shall be personally
                  delivered or mailed, postage prepaid, as provided in Section
                  16, at least ten (10) calendar days before the date fixed for
                  the sale, or at least ten (10) calendar days before the date
                  on or after which the private sale or other disposition is to
                  be made, unless the

                                      -68-
<PAGE>

                  Collateral is perishable or threatens to decline speedily in
                  value. Notice to Persons other than Borrowers claiming an
                  interest in the Collateral shall be sent to such addresses as
                  they have furnished to Agent; and

                       (iii) If the sale is to be a public sale; Agent shall
                  also give notice of the time and place by publishing a notice
                  one time at least ten (10) calendar days before the date of
                  the sale in a newspaper of general circulation in the county
                  in which the sale is to be held;

Agent may bid in any way permitted by applicable law and purchase at any public
sale;

                  (j) Borrowers shall pay all Out-of-Pocket Fees and Costs
incurred in connection with Agent's or any Lenders' enforcement and exercise of
any of their rights and remedies as herein provided, whether or not suit is
commenced by Agent; and/or

                  (k) Any deficiency which exists after disposition of the
Collateral as provided above will be paid immediately by Borrowers. Any excess
will be returned, without interest and subject to the rights of third parties,
to Borrowers by Agent.

         13.2 Rights Cumulative. Agent's and Lenders' rights and remedies under
this Agreement, all other Loan Documents and all other agreements with Borrowers
shall be cumulative. Agent and Lenders shall have all other rights and remedies
not inconsistent herewith as provided under the Code, by law, or in equity. No
exercise by Agent or Lenders of one right or remedy shall be deemed an election,
and no waiver by Agent or Lenders of any default on Borrowers' part shall be
deemed a continuing waiver. No delay by Agent or Lenders shall constitute a
waiver, election or acquiescence by it.

14.      TAXES AND EXPENSES REGARDING THE COLLATERAL

         If Borrowers fail to pay promptly when due to any other Person, monies
which Borrowers are required to pay by reason of any provision in this Agreement
(including without limitation for any tax, expense or with respect to any Lien),
or to promptly contest same by proper proceedings diligently pursued, provided
such contest will not result in the impairment of the validity or priority of
Agent's lien on the Collateral, Agent may, but need not, pay the same and charge
Borrowers' account therefor, and Borrowers shall promptly reimburse Agent. All
such sums shall become additional Obligations owing to Agent, shall bear
interest at the applicable interest rate hereunder and shall be secured by the
Collateral. Any payments made by Agent shall not constitute: (i) an agreement by
Agent to make similar payments in the future, or (ii) a waiver by Agent of any
Event of Default under this Agreement. Agent need not inquire as to, or contest
the validity of, any such expense, tax or Lien and the receipt of the usual
official notice for the payment thereof shall be conclusive evidence that the
same was validly due and owing, and the receipt of any other notice with respect
to all other such monies due hereunder shall be prima facie evidence that the
same was validly due and owing.

15.      CERTAIN WAIVERS

         15.1 Application of Payments. Borrowers waive the right to direct the
application of any and all payments at any time or times hereafter received by
Agent on account of any Obligations owed by Borrowers, including without
limitation amounts received which are the

                                      -69-
<PAGE>

proceeds of any insurance policy, and Borrowers agree that Agent shall have the
continuing exclusive right to apply and reapply such payments in any manner as
Agent may deem advisable, notwithstanding any entry by Agent upon its books.

         15.2 Demand, etc. Except as otherwise provided herein, Borrowers waive
demand, protest, notice of protest, notice of default or dishonor, notice of
payment and nonpayment, notice of any default, notice of nonpayment at maturity,
notice of intent to accelerate, and notice of acceleration, notice prior to
Agent's taking possession or control of any of the Collateral, or any bond or
security which might be required by any court prior to allowing Agent to
exercise any of Agent's remedies, including the issuance of an immediate writ of
possession, the release, compromise, settlement, extension or renewal of any or
all commercial paper, accounts, documents, instruments, chattel paper, and
guarantees at any time held by Agent on which Borrowers may in any way be
liable, the benefit of all valuation, appraisement and exemption laws, and any
right to require a marshaling of assets by Agent or to require that Agent first
resort to some or any portion of any Collateral before sale, foreclosure or
realization on any other portion thereof.

         15.3 Risk of Loss Regarding Collateral. Neither Agent nor Lenders shall
in any way or manner be liable or responsible for: (a) the safekeeping of the
Collateral; (b) any loss or damage thereto occurring or arising in any manner or
fashion from any cause, including without limitation, lost profits, incidental
or consequential damages; (c) any diminution in the value thereof; or (d) any
act or default of any carrier, warehouseman, bailee, forwarding agency or other
Person whomsoever. Except where occasioned by gross negligence or willful
misconduct of Agent or Lenders, all risk of loss, damage or destruction of the
Collateral shall be borne by Borrowers.

         15.4 Confidentiality. Borrowers authorize their accounting firm and/or
service bureau to provide Agent with such information requested by Agent
pursuant to or in accordance with this Agreement, and authorizes Agent to
contact directly any such accounting firm and/or service bureau in order to
obtain such information. Agent shall notify Borrowers prior to contacting such
accounting firm or service bureau, but in no event shall Agent be liable to
Borrowers for failure to provide such notice.

16.      NOTICES

         Except as otherwise expressly provided herein, any notice required or
desired to be served, given or delivered hereunder shall be in the form and
manner specified below, arid shall be addressed to the party to be notified as
follows:

         If to Agent at:            LaSalle Bank National Association
                                    135 South LaSalle Street
                                    Chicago, Illinois  60603
                                    Attention:  Ms. Stephanie Patterson
                                    Facsimile:  312-904-6546
                                    Telephone: 312-904-2771

                                      -70-
<PAGE>

         If to LaSalle at:          LaSalle Bank National Association
                                    135 South LaSalle Street
                                    Chicago, Illinois  60603
                                    Attention:  Ms. Stephanie Patterson

         With copies to:            Jenner & Block
                                    One IBM Plaza
                                    Chicago, Illinois  60611
                                    Attention:  Rochelle P. Slater
                                    Facsimile:  312-840-7722
                                    Telephone: 312-923-2722

         If to Harris at:           Harris Trust and Savings Bank
                                    111 West Monroe Street
                                    Chicago, Illinois  60690
                                    Attention:  M. James Barry, III
                                    Facsimile:  312-293-4856
                                    Telephone: 312-461-2781

         With copies to:            Chapman & Cutler
                                    111 W. Monroe Street, Suite 1700
                                    Chicago, Illinois  60603
                                    Attention:  Steven Hastings
                                    Facsimile:  312-701-2361
                                    Telephone: 312-845-2958

         If to Borrower at:         Westell Technologies, Inc.
                                    750 North Commons Drive
                                    Aurora, Illinois  60504
                                    Attention:  Ms. Amy Forster
                                    Facsimile:  630-375-4940
                                    Telephone: 630-375-4271

         With copies to:            McDermott, Will & Emery
                                    227 West Monroe Street
                                    Chicago, Illinois  60606
                                    Attention:  Neal J. White and Lauretta Moran
                                    Facsimile:  312-984-3651
                                    Telephone: 312-984-7579 (White)
                                               312-984-6933 (Moran)

or to such other address as each party designates to the other by notice in the
manner herein prescribed. Notice shall be deemed given hereunder if (i)
delivered personally or otherwise actually received, (ii) sent by overnight
delivery service, (iii) mailed by first-class United States mail, postage
prepaid, registered or certified, with return receipt requested, or (iv) sent
via telecopy machine with a duplicate signed copy sent on the same day as
provided in clause (ii)

                                      -71-
<PAGE>

above. Notice mailed as provided in clause (iii) above shall be effective upon
the expiration of three (3) Business Days after its deposit in the United States
mail, and notice telecopied as provided in clause (iv) above shall be effective
upon receipt of such telecopy if the duplicate signed copy is sent under clause
(iii) above. Notice given in any other manner described in this section shall be
effective upon receipt by the addressee thereof; provided, however, that if any
notice is tendered to an addressee and delivery thereof is refused by such
addressee, such notice shall be effective upon such tender unless expressly set
forth in such notice.

17.      AGENT

         17.1 Appointment and Authorization.

                  (a) Each Lender hereby irrevocably (subject to Section 17.9)
appoints, designates and authorizes the Agent to take such action on its behalf
under the provisions of this Agreement and each other Loan Document and to
exercise such powers and perform such duties as are expressly delegated to it by
the terms of this Agreement or any other Loan Document, together with such
powers as are reasonably incidental thereto. Notwithstanding any provision to
the contrary contained elsewhere in this Agreement or in any other Loan
Document, the Agent shall not have any duty or responsibility except those
expressly set forth herein, nor shall the Agent have or be deemed to have any
fiduciary relationship with any Lender, and no implied covenants, functions,
responsibilities, duties, obligations or liabilities shall be read into this
Agreement or any other Loan Document or otherwise exist against the Agent.

                  (b) The Issuing Bank shall act on behalf of the Lenders with
respect to any Letters of Credit issued by it and the documents associated
therewith. The Issuing Bank shall have all of the benefits and immunities (i)
provided to the Agent in this Section 17 with respect to any acts taken or
omissions suffered by the Issuing Bank in connection with Letters of Credit
issued by it or proposed to be issued by it and the applications and agreements
for letters of credit pertaining to such Letters of Credit as fully as if the
term "Agent", as used in this Section 17, included the Issuing Bank with respect
to such acts or omissions and (ii) as additionally provided in this Agreement
with respect to the Issuing Bank.

         17.2 Delegation of Duties. The Agent may execute any of its duties
under this Agreement or any other Loan Document by or through agents, employees
or attorneys-in-fact and shall be entitled to advice of counsel concerning all
matters pertaining to such duties. The Agent shall not be responsible for the
negligence or misconduct of any agent or attorney-in-fact that it selects with
reasonable care.

         17.3 Liability of Agent. None of the Agent nor any of its directors,
officers, employees or agents shall (i) be liable for any action taken or
omitted to be taken by any of them under or in connection with this Agreement or
any other Loan Document or the transactions contemplated hereby (except for its
own gross negligence or willful misconduct), or (ii) be responsible in any
manner to any of the Lenders for any recital, statement, representation or
warranty made by the Borrowers or any Subsidiary or Affiliate of the Borrowers,
or any officer thereof, contained in this Agreement or in any other Loan
Document, or in any certificate, report, statement or other document referred to
or provided for in, or received by the Agent under or in connection with, this
Agreement or any other Loan Document, or the validity, effectiveness,

                                      -72-
<PAGE>

genuineness, enforceability or sufficiency of this Agreement or any other Loan
Document, or for any failure of the Borrowers or any other party to any Loan
Document to perform its obligations hereunder or thereunder. The Agent shall not
be under any obligation to any Lender to ascertain or to inquire as to the
observance or performance of any of the agreements contained in, or conditions
of, this Agreement or any other Loan Document, or to inspect the properties,
books or records of the Borrowers or any of the Borrowers' Subsidiaries or
Affiliates.

         17.4 Reliance by Agent. The Agent shall be entitled to rely, and shall
be fully protected in relying, upon any writing, resolution, notice, consent,
certificate, affidavit, letter, telegram, facsimile, telex or telephone message,
statement or other document or conversation believed by it to be genuine and
correct and to have been signed, sent or made by the proper Person or Persons,
and upon advice and statements of legal counsel (including counsel to the
Borrowers), independent accountants and other experts selected by the Agent. The
Agent shall be fully justified in failing or refusing to take any action under
this Agreement or any other Loan Document unless it shall first receive such
advice or concurrence of the Majority Lenders (or all of the Lenders if so
required by Section 21.3) as it deems appropriate and, if it so requests,
confirmation from the Lenders of their obligation to indemnify the Agent against
any and all liability and expense which may be incurred by it by reason of
taking or continuing to take any such action. The Agent shall in all cases be
fully protected in acting, or in refraining from acting, under this Agreement or
any other Loan Document in accordance with a request or consent of the Majority
Lenders (or all of the Lenders if so required by Section 21.3) and such request
and any action taken or failure to act pursuant thereto shall be binding upon
all of the Lenders.

         17.5 Notice of Default. The Agent shall not be deemed to have knowledge
or notice of the occurrence of any Event of Default or Uncured Default except
with respect to defaults in the payment of principal, interest and fees required
to be paid to the Agent for the account of the Lenders, unless the Agent shall
have received written notice from a Lender or the Borrowers referring to this
Agreement, describing such Event of Default or Uncured Default and stating that
such notice is a "notice of default". The Agent will notify the Lenders of its
receipt of any such notice. The Agent shall take such action with respect to
such Event of Default or Uncured Default as may be requested by the Majority
Lenders in accordance with Section 13; provided that unless and until the Agent
has received any such request, the Agent may (but shall not be obligated to)
take such action, or refrain from taking such action, with respect to such Event
of Default or Uncured Default as it shall deem advisable or in the best interest
of the Lenders.

         17.6 Credit Decision. Each Lender acknowledges that the Agent has not
made any representation or warranty to it, and that no act by the Agent
hereafter taken, including any review of the affairs of the Borrowers and their
Subsidiaries, shall be deemed to constitute any representation or warranty by
the Agent to any Lender. Each Lender represents to the Agent that it has,
independently and without reliance upon the Agent and based on such documents
and information as it has deemed appropriate, made its own appraisal of and
investigation into the business, prospects, operations, property, financial and
other condition and creditworthiness of the Borrowers and their Subsidiaries,
and made its own decision to enter into this Agreement and to extend credit to
the Borrowers hereunder. Each Lender also represents that it will, independently
and without reliance upon the Agent and based on such documents and

                                      -73-
<PAGE>

information as it shall deem appropriate at the time, continue to make its own
credit analysis, appraisals and decisions in taking or not taking action under
this Agreement and the other Loan Documents, and to make such investigations as
it deems necessary to inform itself as to the business, prospects, operations,
property, financial and other condition and creditworthiness of the Borrowers.
Except for notices, reports and other documents expressly herein required to be
furnished to the Lenders by the Agent,, the Agent shall not have any duty or
responsibility to provide any Lender with any credit or other information
concerning the business, prospects, operations, property, financial or other
condition or creditworthiness of the Borrowers which may come into the
possession of the Agent.

         17.7 Indemnification. Whether or not the transactions contemplated
hereby are consummated, the Lenders shall indemnify upon demand the Agent and
its directors, officers, employees and agents (to the extent not reimbursed by
or on behalf of the Borrowers and without limiting the obligation of the
Borrowers to do so), pro rata, from and against any and all losses, claims,
damages, costs, expenses and liabilities ("Losses"); provided that no Lender
shall be liable for any payment to any such Person of any portion of the Losses
resulting from such Person's gross negligence or willful misconduct. Without
limitation of the foregoing, each Lender shall reimburse the Agent upon demand
for its ratable share of any costs or out-of-pocket expenses (including
reasonable attorneys' fees) incurred by the Agent in connection with the
preparation, execution, delivery, administration, modification, amendment or
enforcement (whether through negotiations, legal proceedings or otherwise) of,
or legal advice in respect of rights or responsibilities under, this Agreement,
any other Loan Document, or any document contemplated by or referred to herein,
to the extent that the Agent is not reimbursed for such expenses by or on behalf
of the Borrowers. The undertaking in this Section shall survive repayment of the
Loans, cancellation of the Notes, expiration or termination of the Letters of
Credit, any foreclosure under, or modification, release or discharge of, any or
all of the Collateral, termination of this Agreement and the resignation or
replacement of the Agent.

         17.8 Agent in Individual Capacity. LaSalle and its Affiliates may make
loans to, issue letters of credit for the account of, accept deposits from,
acquire equity interests in and generally engage in any kind of banking, trust,
financial advisory, underwriting or other business with the Borrowers arid their
Subsidiaries and Affiliates as though LaSalle were not the Agent or the Issuing
Bank hereunder and without notice to or consent of the Lenders. The Lenders
acknowledge that, pursuant to such activities, LaSalle or its Affiliates may
receive information regarding the Borrowers or their Affiliates (including
information that may be subject to confidentiality obligations in favor of the
Borrowers or such Affiliate) and acknowledge that the Agent shall be under no
obligation to provide such information to them. With respect to their Loans (if
any), LaSalle and its Affiliates shall have the same rights and powers under
this Agreement as any other Lender and may exercise the same as though LaSalle
were not the Agent and the Issuing Bank, and the terms "Lender" and "Lenders"
include LaSalle and its Affiliates, to the extent applicable, in their
individual capacities. 17.9 Successor Agent. The Agent may resign as Agent upon
30 days' notice to the Lenders. If the Agent resigns under this Agreement, the
Majority Lenders shall, with (so long as no Event of Default exists) the consent
of the Borrowers (which shall not be unreasonably withheld or delayed), appoint
from among the Lenders a successor agent for the Lenders. If no successor agent
is appointed prior to, the effective date of the resignation of the Agent, the
Agent may appoint, after consulting with the Lenders and the Borrowers, a
successor agent from among the Lenders. Upon the acceptance of its appointment
as successor agent hereunder, such successor agent shall succeed to all the
rights, powers and duties of the retiring Agent and the term "Agent" shall mean
such successor agent, and the retiring Agent's appointment, powers and duties as
Agent shall be terminated. After any retiring Agent's resignation hereunder as
Agent, the provisions of this Section 17 and Sections 2.11 and 20 shall inure to
its benefit as to any actions taken or omitted to be taken by it while it was
Agent under this Agreement. If no

                                      -74-
<PAGE>

successor agent has accepted appointment as Agent by the date which is 30 days
following a retiring Agent's notice of resignation, the retiring Agent's
resignation shall nevertheless thereupon become effective and the Lenders shall
perform all of the duties of the Agent hereunder until such time, if any, as the
Majority Lenders appoint a successor agent as provided for above.

         17.10 Collateral Matters. The Lenders irrevocably authorize the Agent,
at its option and in its discretion, (a) to release any Lien granted to or held
by the Agent pursuant to the Collateral (i) upon termination of the Commitments
and payment in full of all Loans and all other obligations of the Borrowers
hereunder and the expiration or termination of all Letters of Credit; (ii)
constituting property sold or to be sold or disposed of as part of or in
connection with any disposition permitted hereunder; or (iii) subject to Section
21.3, if approved, authorized or ratified in writing by the Majority Lenders; or
(b) to subordinate its interest in any collateral to any holder of a Lien on
such collateral which is permitted by clause (vii) of Section 8.1 (it being
understood that the Agent may conclusively rely on a certificate from the
Borrowers in determining whether the Debt secured by any such Lien is permitted
by Section 8.6). Upon request by the Agent at any time, the Lenders will confirm
in writing the Agent's authority to release, or subordinate its interest in,
particular types or items of collateral pursuant to this Section 17.10.

18.      ASSIGNMENTS; PARTICIPATIONS

         18.1 Assignments. Any Lender may, with the prior written consents of
the Issuing Bank and the Agent and (so long as no Event of Default exists) the
Borrowers (which consents shall not be unreasonably delayed or withheld and, in
any event, shall not be required for an assignment by a Lender to one of its
Affiliates), at any time assign and delegate to one or more commercial banks or
other Persons (any Person to whom such an assignment and delegation is to be
made being herein called an "Assignee") all or any fraction of such Lender's
Loans and Commitment (which assignment and delegation shall be of a constant,
and not a varying, percentage of all the assigning Lender's Loans and
Commitment) in a minimum aggregate amount equal to the lesser of (i) the amount
of the assigning Lender's Pro Rata Share of the Revolving Commitment and (ii)
$5,000,000; provided that (a) no assignment and delegation may be made to any
Person if, at the time of such assignment and delegation, the Borrowers would be
obligated to pay any greater amount under Sections 2.18, 2.20, 2.21, 2.22, or
2.23 to the Assignee than the Borrowers are then obligated to pay to the
assigning Lender under such Sections (and if any assignment is made in violation
of the foregoing, the Borrowers will not be required to pay the incremental
amounts) and (b) the Borrowers and the Agent shall be entitled to continue to
deal solely and directly with such Lender in connection with the interests so
assigned

                                      -75-
<PAGE>

and delegated to an Assignee until the date when all of the following conditions
shall have been met:

                  (x) five Business Days (or such lesser period of time as the
         Agent and the assigning Lender shall agree) shall have passed after
         written notice of such assignment and delegation, together with payment
         instructions, addresses and related information with respect to such
         Assignee, shall have been given to the Borrowers and the Agent by such
         assigning Lender and the Assignee,

                  (y) the assigning Lender and the Assignee shall have executed
         and delivered to the Borrowers and the Agent an assignment agreement
         substantially in the form of Exhibit G (an "Assignment Agreement"),
         together with any documents required to be delivered thereunder, which
         Assignment Agreement shall have been accepted by the Agent, and

                  (z) except in the case of an assignment by a Lender to one of
         its Affiliates, the assigning Lender or the Assignee shall have paid
         the Agent a processing fee of $3,500.

From and after the date on which the conditions described above have been met,
(x) such Assignee shall be deemed automatically to have become a party hereto
and, to the extent that rights and obligations hereunder have been assigned and
delegated to such Assignee pursuant to such Assignment Agreement, shall have the
rights and obligations of a Lender hereunder and (y) the assigning Lender, to
the extent that rights and obligations hereunder have been assigned and
delegated by it pursuant to such Assignment Agreement, shall be released from
its obligations hereunder. Within five Business Days after effectiveness of any
assignment and delegation, the Borrowers shall execute and deliver to the Agent
(for delivery to the Assignee and the Assignor, as applicable) a new Note in the
principal amount of the Assignee's Pro Rata Share of the Revolving Loan
Commitment and, if the assigning Lender has retained a Commitment hereunder, a
replacement Note in the principal amount of the Pro Rata Share of the Revolving
Loan Commitment retained by the assigning Lender (such Note to be in exchange
for, but not in payment of, the predecessor Note held by such assigning Lender).
Each such Note shall be dated the effective date of such assignment. The
assigning Lender shall mark the predecessor Note "exchanged" and deliver it to
the Borrowers. Accrued interest on that part of the predecessor Note being
assigned shall be paid as provided in the Assignment Agreement. Accrued interest
and fees on that part of the predecessor Note not being assigned shall be paid
to the assigning Lender. Accrued interest and accrued fees shall be paid at the
same time or times provided in the predecessor Note and in this Agreement. Any
attempted assignment and delegation not made in accordance with this Section
18.1 shall be null and void.

         Notwithstanding the foregoing provisions of this Section 18.1 or any
other provision of this Agreement, any Lender may at any time assign all or any
portion of its Loans and its Note to a Federal Reserve Bank (but no such
assignment shall release any Lender from any of its obligations hereunder).

         18.2 Participations. Any Lender may at any time sell to one or more
commercial banks or other Persons participating interests in any Loan owing to
such Lender, the Note held by such Lender, the Commitment of such Lender, the
direct or participation interest of such Lender in any Letter of Credit or any
other interest of such Lender hereunder (any Person purchasing any such
participating interest being herein called a "Participant"). In the event of a

                                      -76-
<PAGE>

sale by a Lender of a participating interest to a Participant, (x) such Lender
shall remain the holder of its Note for all purposes of this Agreement, (y) the
Borrowers and the Agent shall continue to deal solely and directly with such
Lender in connection with such Lender's rights and obligations hereunder and (z)
all amounts payable by the Borrowers shall be determined as if such Lender had
not sold such participation and shall be paid directly to such Lender. No
Participant shall have any direct or indirect voting rights hereunder except
with respect to any of the events described in Section 21.3(b). Each Lender
agrees to incorporate the requirements of the preceding sentence into each
participation agreement which such Lender enters into with any Participant. The
Borrowers agree that if amounts outstanding under this Agreement and the Notes
are due and payable (as a result of acceleration or otherwise), each Participant
shall be deemed to have the right of setoff in respect of its participating
interest in amounts owing under this Agreement, any Note and with respect to any
Letter of Credit to the same extent as if the amount of its participating
interest were owing directly to it as a Lender under this Agreement or such
Note; provided that such right of setoff shall be subject to the obligation of
each Participant to share with the Lenders, and the Lenders agree to share with
each Participant, as provided in Section 2.6. The Company also agrees that each
Participant shall be entitled to the benefits of Sections 2.18, 2.20, 2.21,
2.22, and 2.23 as if it were a Lender (provided that no Participant shall
receive any greater compensation pursuant to Sections 2.18, 2.20, 2.21, 2.22, or
2.23 than would have been paid to the participating Lender if no participation
had been sold).

19.      CHOICE OF LAW AND VENUE

         This Agreement shall be deemed to have been made in the State of
Illinois and the validity of this Agreement, its construction, interpretation
and enforcement, and the rights of parties hereunder and concerning the
Collateral, shall be determined under, governed by and construed in accordance
with the laws of the State of Illinois. The parties agree that all actions or
proceedings arising in connection with this Agreement shall be tried and
litigated only in the state and federal courts located in the County of Cook,
State of Illinois. Each Borrower waives any right it may have to assert the
doctrine of forum non conveniens or to object to such venue and hereby consents
to any court ordered relief. Each Borrower consents that all service of process
upon it be made by registered mail or messenger directed to it at the address
set forth in Section 16 above and that service so made shall be deemed to be
completed upon the earlier of actual receipt or three (3) Business Days after
the same shall have been posted to Borrowers' address by Borrowers' agent as set
forth below. Nothing contained in this Section 19 shall affect the right of
Agent or Lenders to serve legal process in any other manner permitted by law or
affect the right of Agent or Lenders to bring any action or proceeding against
Borrowers or their property in the courts of any other jurisdiction.

20.      INDEMNITY

         Borrowers shall indemnify, hold harmless and defend Agent, Lenders and
their directors, officers, agents, counsel and employees ("Indemnified Persons")
from and against all Losses, whether such Losses arise or notice thereof is
received by Agent or Lenders during the Initial Term or any renewal term or
after termination of this Agreement, incurred by any of them arising principally
out of or relating to this Agreement or any other transaction contemplated
hereby other than arising out of any intercreditor relationship between Agent
and Lenders or between Lenders and any Participant or subordinated debt holder
and except for any such losses caused by the gross negligence or willful
misconduct of such Indemnified Persons, and shall reimburse Agent or Lenders and
each other Indemnified Person for any expenses including in

                                      -77-
<PAGE>

connection with the investigation of, preparation for or defense of any actual
or threatened claim, action or proceeding arising therefrom (including any such
costs of responding to discovery requests or subpoenas), regardless of whether
any Indemnified Person is a party thereto. Each Indemnified Person may select
its own counsel with respect to any Losses, in addition to any Borrowers'
counsel, and shall be indemnified therefor hereunder.

21.      GENERAL PROVISIONS

         21.1 Acceptance. This Agreement shall be binding and deemed effective
when executed by Borrowers and accepted and executed by Agent and Lenders.

         21.2 Binding Agreement. This Agreement shall bind and inure to the
benefit of the respective successors and assigns of each of the parties;
provided, however, that Borrowers may not assign this Agreement or any rights
hereunder without Lenders' prior written consent and any prohibited assignment
shall be absolutely void. No consent to an assignment by Agent shall release
Borrowers from their Obligations to Agent or Lenders.

         21.3 Waiver and Amendment.

                  (a) Agent's or Lenders' failure, at any time or times
hereafter, to require strict performance by Borrowers of any provisions of this
agreement or the Revolving Loan Notes shall not waive, affect or diminish any
right of Agent or Lenders thereafter to demand strict compliance and performance
therewith. Any suspension or waiver by Agent or Lenders of a Potential Default
or Event of Default by Borrowers under this Agreement or the Revolving Loan
Notes shall not suspend, waive or affect any other Potential Default or Event of
Default by Borrowers under this Agreement, or the Revolving Loan Notes whether
the same is prior or subsequent thereto and whether of the same or a different
kind or character.

                  (b) No amendment or modification of any provision of this
Agreement or the Notes relating to (i) any increase of the Commitments of the
Lender, (ii) any change in the final maturity of the Loans or any payment date
for interest and fees due hereunder, (iii) the reduction of interest rates
applicable to the Loans or fees payable under this Agreement, (iv) rates of
advance on Collateral utilized in computing Revolving Loan Availability, or (v)
release of Collateral shall be effective without the written agreement of all of
the Lenders and Borrowers. No amendment or modification of any other provision
of this Agreement shall be effective without the written agreement of the
Majority Lenders and Borrowers and no termination or waiver of any other single
provision of this Agreement, or consent to any departure by Borrowers therefrom,
shall in any event be effective without the written concurrence of the Majority
Lenders. Whenever a consent is required, any of the Lenders shall have the right
to grant or withhold same at their sole discretion.

                  (c) Notwithstanding the provisions of this Section, no
amendment, modification, termination or waiver of any provision of Section 17 or
any other provision referring to Agent's rights hereunder shall be effective
without the written concurrence of Agent. Agent may, but shall have no
obligation to, with the concurrence of any Lender, execute amendments,
modifications, waivers or consents on behalf of such Lender.

                                      -78-
<PAGE>

         21.4 Section Headings. Section headings and section numbers have been
set forth herein for convenience only. Unless the contrary is compelled by the
context, everything contained in each paragraph applies equally to this entire
Agreement.

         21.5 Construction. Neither this Agreement nor any uncertainty or
ambiguity herein shall be construed or resolved against Agent, Lenders or
Borrowers, whether under any rule of construction or otherwise. On the contrary,
this Agreement has been reviewed by all parties and shall be construed and
interpreted according to the ordinary meaning of the words used so as to fairly
accomplish the purposes and intentions of the parties hereto.

         21.6 Severability. Each provision of this Agreement shall be severable
from every other provision of this Agreement for the purpose of determining the
legal enforceability of any specific provision.

         21.7 Entire Agreement. This Agreement cannot be changed or terminated
orally. All prior agreements, understandings, representations, warranties, and
negotiations, if any, are merged into this Agreement. This Agreement may be
amended only by a written agreement signed by duly authorized officers of
Borrowers, Agent and Lenders (or Majority Lenders in accordance with Section
21.3 hereof).

         21.8 No Fiduciary Relationship or Joint Venture. No provision herein or
in any of the other Loan Documents and no course of dealing between the parties
hereto shall be deemed to create any fiduciary relationship between Lenders and
Borrowers or Agent and Borrowers nor to create any partnership or joint venture
between Lenders and Borrowers or Agent and Borrowers.

         21.9 Publicity. Borrowers hereby consent to the issuance or
dissemination by Lenders to the public of information generally describing the
credit accommodations entered into pursuant to this Agreement (as it may be
amended, modified and supplemented from time to time) including without
limitation the names and addresses of Borrowers, a general description of
Borrowers' businesses and the use of Borrowers' names and logos in connection
therewith.

         21.10 Counterparts. This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original but all of which shall
together constitute one and the same instrument.

         21.11 Conflict. In the event of a conflict between the terms of this
Agreement and the terms of any Notes or other Loan Documents, the terms of this
Agreement shall be controlling.

22.      WAIVER OF JURY TRIAL

         22.1 Forum Selection and Consent to Jurisdiction. ANY LITIGATION BASED
HEREON, OR ARISING OUT OF, UNDER, OR IN CONNECTION WITH THIS AGREEMENT OR ANY
OTHER LOAN DOCUMENT, SHALL BE BROUGHT AND MAINTAINED EXCLUSIVELY IN THE COURTS
OF THE STATE OF ILLINOIS OR IN THE UNITED STATES DISTRICT COURT FOR THE NORTHERN
DISTRICT OF ILLINOIS; PROVIDED THAT ANY SUIT SEEKING ENFORCEMENT AGAINST ANY
COLLATERAL OR OTHER PROPERTY MAY BE BROUGHT, AT THE AGENT'S OPTION,

                                      -79-
<PAGE>

IN THE COURTS OF ANY JURISDICTION WHERE SUCH COLLATERAL OR OTHER PROPERTY MAY BE
FOUND. EACH BORROWER HEREBY EXPRESSLY AND IRREVOCABLY SUBMITS TO THE
JURISDICTION OF THE COURTS OF THE STATE OF ILLINOIS AND OF THE UNITED STATES
DISTRICT COURT FOR THE NORTHERN DISTRICT OF ILLINOIS FOR THE PURPOSE OF ANY SUCH
LITIGATION AS SET FORTH ABOVE. EACH BORROWER FURTHER IRREVOCABLY CONSENTS TO THE
SERVICE OF PROCESS BY REGISTERED MAIL, POSTAGE PREPAID, OR BY PERSONAL SERVICE
WITHIN OR WITHOUT THE STATE OF ILLINOIS. EACH BORROWER HEREBY EXPRESSLY AND
IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY LAW, ANY OBJECTION IT MAY
NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY SUCH LITIGATION BROUGHT IN
ANY SUCH COURT REFERRED TO ABOVE AND ANY CLAIM THAT ANY SUCH LITIGATION HAS BEEN
BROUGHT IN AN INCONVENIENT FORUM.

         22.2 Waiver of Jury Trial. EACH OF THE BORROWERS, THE AGENT AND EACH
LENDER HEREBY WAIVES ANY RIGHT TO A TRIAL BY JURY IN ANY ACTION OR PROCEEDING TO
ENFORCE OR DEFEND ANY RIGHTS UNDER THIS AGREEMENT, ANY NOTE, ANY OTHER LOAN
DOCUMENT AND ANY AMENDMENT, INSTRUMENT, DOCUMENT OR AGREEMENT DELIVERED OR WHICH
MAY IN THE FUTURE BE DELIVERED IN CONNECTION HEREWITH OR THEREWITH OR ARISING
FROM ANY BANKING RELATIONSHIP EXISTING IN CONNECTION WITH ANY OF THE FOREGOING,
AND AGREES THAT ANY SUCH ACTION OR PROCEEDING SHALL BE TRIED BEFORE A COURT AND
NOT BEFORE A JURY.

                                      -80-
<PAGE>

         IN WITNESS WHEREOF, Borrowers have executed and delivered this
Agreement.

        "BORROWERS"                          WESTELL TECHNOLOGIES, INC.

                                             By:    /s/ Amy T. Forster
                                             Title:

                                             WESTELL, INC.

                                             By:    /s/ Amy T. Forster
                                             Title:

                                             WESTELL INTERNATIONAL, INC.

                                             By:    /s/ Amy T. Forster
                                             Title:

                                             CONFERENCE PLUS, INC.

                                             By:    /s/ Amy T. Forster
                                             Title:

                                             TELTREND, INC.

                                             By:    /s/ Amy T. Forster
                                             Title:

                                             Address: 750 North Commons Drive
                                                      Aurora, Illinois 60504

<PAGE>

                  ACCEPTED this 31st day of August, 2000, at Agent's place of
business in the City of Chicago, State of Illinois.

                                            LASALLE BANK NATIONAL ASSOCIATION, a
                                            national banking association,
                                            as Agent

                                            By:     /s/ Stephanie Patterson
                                            Title:  Assistant Vice President

                                            Address: 135 S. LaSalle Street
                                                     Chicago, Illinois 60603
                                                     Attn:  Stephanie Patterson

                                            LASALLE BANK NATIONAL ASSOCIATION
        Revolving Loan Commitment
        $30,000,000
        Percentage:  66.666666667%
                                            By:     /s/ Stephanie Patterson
                                            Title:  Assistant Vice President

                                            Address: 135 S. LaSalle Street
                                                     Chicago, Illinois 60603
                                                     Attn: Stephanie Patterson

                                            HARRIS TRUST AND SAVINGS BANK
        Revolving Loan Commitment
        $15,000,000
        Percentage:  33.333333333%
                                            By:     /s/ M. James Barry, III
                                            Title:  Vice President

                                            Address: 111 West Monroe Street
                                                     Chicago, Illinois 60690
                                                     Attn:  M. James Barry, III

<PAGE>

                                     ANNEX A
                                     -------

                                Applicable Margin

                             Interest Coverage Ratio

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

                      LEVEL 1        LEVEL II         LEVEL III      LEVEL IV
----------------- -------------- ----------------- -------------- --------------
                        <3.0        >3.0 <4.0         >4.0 <5.0        >5.0
----------------- -------------- ----------------- -------------- --------------
LIBOR Margin           2.50%          2.25%             2.00%         1.75%
----------------- -------------- ----------------- -------------- --------------
Reference Rate         0.50%          0.25%               0%
Margin
----------------- -------------- ----------------- -------------- --------------
Unused Fee             0.375%         0.375%            0.25%         0.25%
----------------- -------------- ----------------- -------------- --------------
Standby L/C Fee        2.50%          2.25%             2.00%         1.75%
Rate
----------------- -------------- ----------------- -------------- --------------
rade L/C Fee          1.25%          1.125%            1.00%         0.875%
Rate
----------------- -------------- ----------------- -------------- --------------

*From the Closing Date until December 31, 2000, the applicable rates shall be
those set forth under the column titled "Level III".Exhibit 10.15

                                 REVOLVING NOTE

$35,000,000                                                        June 29, 2001

                  WESTELL TECHNOLOGIES, INC., WESTELL, INC., WESTELL
INTERNATIONAL, INC., CONFERENCE PLUS, INC. and TELTREND, INC. (collectively,
"Borrowers"), hereby jointly and severally promise to pay to the order of
LaSalle Bank National Association (the "Bank"), on June 30, 2002 the principal
sum of Thirty Five Million and No/100 ($35,000,000), or such lesser amount of
all of the then outstanding advances made by the Bank to Borrowers pursuant to
Section 2.1 of the "Loan Agreement" (as hereinafter defined), together with
interest on any and all principal amounts remaining unpaid hereunder from time
to time from the date hereof until paid, at the rate(s) set forth in Section
2.10 of the Loan Agreement, payable on the last day of each "Interest Period"
(as such term is defined in the Loan Agreement), and continuing until the
Revolving Loans (as such term is defined in the Loan Agreement) are paid in
full.

                  Any amount of interest or principal hereof which is not paid
when due, whether on the last day of an Interest Period, at stated maturity, by
acceleration or otherwise, shall bear interest payable on demand at the "Default
Rate" (as such term is defined in the Loan Agreement).

                  All payments of principal and interest on this Note shall be
payable in lawful money of the United States of America. In no event shall the
interest payable exceed the highest rate permitted by law. Principal and
interest shall be paid to Bank at its office at 135 South LaSalle Street,
Chicago, Illinois 60603, or at such other place as the holder of this Note may
designate in writing to Borrowers. All payments hereunder shall be applied as
provided in the Loan Agreement. In determining Borrowers' liability to the Bank
hereunder, the books and records of the Bank shall be controlling absent
arithmetic or manifest or demonstrable error.

                  This Note evidences certain indebtedness incurred under the
Amended and Restated Loan and Security Agreement, dated August 31, 2000 between
Borrowers and Bank (as heretofore or hereafter amended, the "Loan Agreement"),
to which reference is hereby made for a statement of the terms and conditions
under which the due date of this Note or any payment thereon may be accelerated
or is automatically accelerated, or under which this Note may be prepaid or is
required to be prepaid. All capitalized terms used herein shall, unless
otherwise defined herein, have the meanings set forth in the Loan Agreement. The
holder of this Note is entitled to all of the benefits provided in said Loan
Agreement and the Loan Documents referred to therein. Borrowers agree to pay all
costs of collection and all reasonable attorneys' fees paid or incurred in
enforcing any of the Bank's rights hereunder promptly on demand of the Bank and
as more fully set forth in the Loan Agreement.

                  This Note may be prepaid in whole or in part, and shall be
prepaid as

                                       1
<PAGE>

appropriate, in accordance with the terms of the Loan Agreement.

                  Except as set forth in the Loan Agreement, the Borrowers,
endorsers and all other parties to this Note waive presentment, demand, notice,
protest and all other demands and notices in connection with the delivery,
acceptance, performance, default or enforcement of this Note and the Loan
Agreement. In any action on this Note, the Bank or its assignee need not file
the original of this Note, but need only file a photocopy of this Note certified
by the Bank or such assignee to be a true and correct copy of this Note.

                  This is the Revolving Note referred to in the Loan Agreement.
This Note is secured by, among other things, a security interest in the
Collateral granted to the Agent pursuant to Section 4 of the Loan Agreement.

                  No delay on the part of the Bank in exercising any right under
this Note, any security agreement, guaranty or other undertaking affecting this
Note, shall operate as a waiver of such right or any other right under this
Note, nor shall any omission in exercising any right on the part of the Bank
under this Note operate as a waiver of any other rights.

                  Upon the occurrence of an Event of Default which is an Uncured
Default under the Loan Agreement, the outstanding indebtedness evidenced by this
Note, together with all accrued interest, shall be due and payable in accordance
with the terms of the Loan Agreement, without notice to or demand upon the
Borrowers except as otherwise provided in the Loan Agreement, and the Bank may
exercise all of its rights and remedies reserved to it under the Loan Agreement
or applicable law.

                  If any provision of this Note or the application thereof to
any party or circumstance is held invalid or unenforceable, the remainder of
this Note and the application of such provision to other parties or
circumstances will not be affected thereby and the provisions of this Note shall
be severable in any such instance.

         This Note shall be in replacement of and in substitution for that
certain Revolving Loan Note dated August 31, 2000, in the original principal
amount of $30,000,000, made by and payable to the order of Bank (the "Original
Note"). The indebtedness evidenced by the Original Note is continuing
indebtedness, and nothing herein shall be deemed to constitute a payment,
settlement or novation of the Original Note, or to release or otherwise
adversely affect any lien, mortgage or security interest securing such
indebtedness or any rights of the Bank against any guarantor, surety or other
party primarily or secondarily liable for such indebtedness.

                  BORROWERS HEREBY WAIVE ANY RIGHT BORROWERS MAY NOW OR
HEREAFTER HAVE TO SUBMIT ANY CLAIM, ISSUE OR DEFENSE ARISING HEREUNDER OR UNDER
THE OTHER DOCUMENTS RELATING TO THIS NOTE TO A TRIAL BY JURY.

                                       2
<PAGE>

                  This Note shall be deemed to have been made under and shall be
governed in accordance with the internal laws and not the conflict of law rules
of the State of Illinois.

                                            WESTELL TECHNOLOGIES, INC.

                                            By: /s/ Nicholas Hindman
                                            Title:  Vice President

                                            WESTELL, INC.

                                            By:  /s/ Nicholas Hindman
                                            Title: Vice President

                                            WESTELL INTERNATIONAL, INC.

                                            By:   /s/ Nicholas Hindman
                                            Title:  Vice President

                                            CONFERENCE PLUS, INCORPORATED

                                            By:  /s/ Nicholas Hindman
                                            Title:  Vice President

                                            TELTREND, INC.

                                            By: /s/ Nicholas Hindman
                                            Title: Vice President

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