AMENDMENT TO
                           LOAN AND SECURITY AGREEMENT


               THIS AMENDMENT TO LOAN AND SECURITY AGREEMENT (this "Amendment")
     is made as of February 24, 1999 by and between LASALLE NATIONAL BANK, its
     successors and assigns ("Bank"), WESTELL TECHNOLOGIES, INC. ("WTI"),
     WESTELL, INC. ("Westell"), WESTELL INTERNATIONAL, INC. ("International"),
     AND CONFERENCE PLUS, INC.  ("CPI"; WTI, Westell, International, and CPI
     are collectively referred to herein as "Borrowers").

                                   BACKGROUND

               A. Bank and Borrowers are parties to a Loan and Security
     Agreement dated as of October 13, 1998 (the "Loan Agreement"), pursuant to
     which Bank has made loans and advances to Borrowers.

               B. Borrowers have informed Bank that CPI has implemented a stock
     option plan (the "Stock Option Plan") pursuant to which it has authorized
     the granting of options to purchase up to 6,500 shares in the aggregate of
     its common stock to certain of its key employees, and actually granted
     6,250 options in accordance with the Stock Option Plan.

               C. Borrowers have requested that the parties enter into this
     Amendment in order to make certain modifications to the Loan Agreement in
     connection with the Stock Option Plan.

               D. Borrowers have also informed Bank that they were in violation
     of their maximum aggregate year-to-date net loss covenant for the
     nine-month reporting period ended December 31, 1998 and have requested that
     Bank waive such violation and any Events of Default created thereby, and
     have also requested that Bank amend their financial covenants.

               E. Bank is agreeable to making such modifications and granting
     such waiver on the terms and conditions contained herein.

               F. Terms used herein but not defined herein shall have the same
     meanings assigned to them in the Loan Agreement.

                                     CLAUSES

               NOW, THEREFORE, in consideration of the premises set forth above
     and the mutual promises contained in this Amendment, and for other good and
     valuable consideration, the receipt and sufficiency of which hereby are
     acknowledged, Borrowers and Bank agree as follows:

               SECTION 1 Amendments to Loan Agreement. The Loan Agreement is
     hereby amended as follows:

               1.1 Section 1.1 of the Loan Agreement is hereby amended by
     inserting the following new definition in its appropriate alphabetical
     position:

               "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 option."

               1.2 Section 5.16 is hereby amended by inserting the phrase
     ",except in connection with the Stock Option Plan" in the twenty first line
     thereof after the word "Borrower".

               1.3 Section 6.1(b) of the Loan Agreement is hereby amended and
     restated in its entirety as follows:





     "6.1 (b)  Financial Covenants.  The Borrowers shall maintain:

               (i) a maximum aggregate year-to-date (net loss)/ minimum net
               income (exclusive of extraordinary income and losses) for the
               interim periods ending on the dates set forth below in the
               amounts set forth below;

                   End of Period       (Net Loss)/Net Income
                      3/31/99             ($35,000,000)
                      6/30/99              ($5,000,000)
                      9/30/99              ($5,000,000)
                     12/31/99              ($3,000,000)
                      3/31/00               $1,000,000 
                      6/30/00               $1,000,000 
                      9/30/00               $2,000,000 
                     12/31/00               $3,000,000 
                      3/31/01               $4,000,000 
                      6/30/01               $1,000,000 
                      9/30/01               $2,000,000 
                     12/31/01               $3,000,000 
                      3/31/02               $4,000,000 
                      6/30/02               $1,000,000 

               (ii) at all times, a Leverage Ratio of not more than 1.35:1.0,
               measured on a monthly basis; and

               (iii) at all times, a Current Ratio of not less than 1.45:1,
               measured on a monthly basis."

               1.4 Section 6.2(e) of the Loan Agreement is hereby amended by
     inserting the following at the end thereof: ", and in accordance with the
     terms of the Stock Option Plan requiring the redemption by CPI of the
     shares of its stock under the circumstances set forth therein".

               1.5 Section 6.2 of the Loan Agreement is hereby amended by
     inserting the following new Section 6.2(p) at the end thereof:

               "6.2 (p)  Ownership of CPI.  WTI shall at all times own,
               beneficially and of record at least fifty-one percent (51%) of
               the issued and outstanding stock of CPI."

               1.6 Schedule 5.16 of the Loan Agreement is hereby amended and
     restated in its entirety in the form of Exhibit A hereto.

               SECTION 2 Waiver. Bank hereby waives Borrowers' failure to be in
     compliance with their Maximum Aggregate Year-to-Date Net Loss covenant as
     of December 31, 1998 as evidenced by a waiver letter dated February 11,
     1999, and any Events of Default created thereby solely as of December 31,
     1998. This shall be a limited waiver and shall not constitute a waiver of
     any subsequent violations whether of a different or like nature, nor shall
     it constitute a course of conduct or dealing

               SECTION 3 Representations and Warranties. To induce Bank to amend
     the Loan Agreement and consider making future loans thereunder, the
     Borrowers represent and warrant to Bank that:

               3.1 Compliance with Loan Agreement. On the date hereof, Borrowers
     are in compliance with all of the terms and provisions set forth in the
     Loan Agreement (as modified by this Amendment) and no Event of Default
     specified in Section 7 of the Loan Agreement nor any event which, upon
     notice or lapse of time, or both, would constitute such an Event of
     Default, has occurred.

               3.2 Representations and Warranties. On the date hereof, the
     representations and warranties and covenants set forth in Sections 5 and 6
     of the Loan Agreement (as modified by this Amendment) are true and correct





     with the same effect as though such representations and warranties and
     covenants had been warranties and covenants expressly related to an earlier
     date, except as disclosed to the Bank on January 19, 1999 that the
     cumulative net loss at December 31, 1998 exceeded $28,000,000 by $2,500,000
     due to unanticipated forward pricing of DSL Systems.

               3.3 Corporate Authority. Borrowers have full power and authority
     to enter into this Amendment, to make the borrowings under the Loan
     Agreement as amended by this Amendment, and to incur and perform the
     obligations provided for under the Loan Agreement and this Amendment, all
     of which have been duly authorized by all proper and necessary corporate
     action. No consent or approval of stockholders or of any public authority
     or regulatory body is required as a condition to the validity or
     enforceability of this Amendment.

               3.4 Amendment as Binding Agreement. This Amendment constitutes
     the valid and legally binding obligation of Borrowers, fully enforceable
     against Borrowers, in accordance with its terms.

               3.5 No Conflicting Agreements. The execution and performance by
     Borrowers of this Agreement will not (i) violate any provision of law, any
     order of any court or other agency of government, or the Articles of
     Incorporation or By-Laws of Borrowers, or (ii) violate any indenture,
     contract, agreement or other instrument to which any Borrower is a party,
     or by which its property is bound, or be in conflict with, result in a
     breach of or constitute (with due notice and/or lapse of time) a default
     under any such indenture, contract, agreement or other instrument or result
     in the creation or imposition of any lien, charge or encumbrance of any
     nature whatsoever upon any of the property or assets of any Borrower.

               SECTION 4 Condition Precedent. The agreement by Bank to amend the
     Loan Agreement is subject to the following condition precedent:

               4.1 Corporate Authority. Borrowers shall have provided to Bank
     certified copies of the unanimous written consent of their Boards of
     Directors authorizing the execution, delivery and performance by the
     Borrowers of this Amendment and the agreements, instruments and documents
     executed in connection herewith.

               SECTION 5 General Provisions.

               5.1 Except as amended by this Amendment, the terms and provisions
     of the Loan Agreement shall remain in full force and effect and are in all
     other respects ratified and confirmed.

               5.2 This Amendment shall be construed in accordance with and
     governed by the laws of the State of Illinois.

               5.3 This Amendment may be executed in any number of counterparts.

               5.4 Borrowers hereby agree to pay all out-of-pocket expenses
     incurred by Bank in connection with the preparation, negotiation and
     consummation of this Amendment, and all other documents related thereto
     (whether or not any borrowings under the Loan Agreement as amended shall be
     consummated), including, without limitation, the reasonable fees and
     expenses of Bank's counsel, and any filing fees required in connection with
     the filing of any documents necessary to consummate the provisions of this
     Amendment.



                    (Remainder of page intentionally left blank)

               IN WITNESS WHEREOF, the Borrowers have caused this Amendment to
     be duly executed by their duly authorized officers and Bank has caused





     this Amendment to be executed by its duly authorized officer, all as of the
     day and year first above written.

                                   WESTELL TECHNOLOGIES, INC.
                                   a Delaware corporation

                                   By:
                                     Title:


                                  WESTELL, INC.
                                   a Delaware corporation

                                   By:
                                     Title:


                                   WESTELL INTERNATIONAL, INC.
                                   a Delaware corporation

                                   By:
                                     Title:


                                   CONFERENCE PLUS, INC. 
                                   an Illinois corporation

                                   By:
                                     Title:


                                   LASALLE NATIONAL BANK 


                                   By:
                                     Title:



     Exhibit A to Amendment

                                  Schedule 5.16

                                  See attached.