EXECUTION COPY



                          REGISTRATION RIGHTS AGREEMENT

          THIS REGISTRATION RIGHTS AGREEMENT (this "Agreement"), is made as of
     April 15, 1999, by and among Westell Technologies, Inc., a Delaware
     corporation (the "Company"), with headquarters located at 750 N. Commons
     Drive, Aurora, Illinois 60504, and the undersigned (the "Initial
     Purchasers").

                                    RECITALS

          A. In connection with the Securities Purchase Agreement dated of even
     date herewith by and between the Company and the Initial Purchasers (the
     "Securities Purchase Agreement"), the Company has agreed, upon the terms
     and subject to the conditions contained therein, to issue and sell to the
     Initial Purchasers (i) an amount of the Company s 6% Subordinated
     Convertible Debentures (the "Debentures") in the form of Exhibit A which
     are convertible into shares of the Company's Class A Common Stock, par
     value $0.01 per share (the "Class A Common Stock" and, when taken together
     with all other classes and series of the Company's common stock, the
     "Common Stock"), (ii) warrants in the form of Exhibit B (each a "Warrant"
     and, when taken together with all of the warrants issued hereunder, the
     "Warrants")entitling the holder thereof to purchase the number of shares
     (the "Warrant Shares") of Class A Common Stock as set forth below. The
     Debentures, the PIK Debentures (as defined in the Debenture) and the Cap
     Debentures (as defined in the Debenture) are collectively referred to
     herein as the "Convertible Securities". The shares of Class A Common Stock
     issuable upon conversion of or otherwise pursuant to the Convertible
     Securities are referred to herein as the "Conversion Shares." The
     Convertible Securities, the Warrants, the Conversion Shares and the Warrant
     Shares are collectively referred to herein as the "Securities".

          B. To induce the Initial Purchasers to execute and deliver the
     Securities Purchase Agreement, the Company has agreed to provide certain
     registration rights under the Securities Act of 1933, as amended, and the
     rules and regulations thereunder, or any similar successor statute
     (collectively, the "Securities Act"), and applicable state securities laws.

                                   AGREEMENTS

          NOW THEREFORE, in consideration of the premises and the mutual
     covenants contained herein and other good and valuable consideration, the
     receipt and sufficiency of which are hereby acknowledged, the Company, and
     the Initial Purchasers hereby agree as follows:

                                    ARTICLE I
                                   DEFINITIONS

          1.1 Definitions. As used in this Agreement, the following terms shall
     have the following meanings:

                    (a) "Purchasers" means the Initial Purchasers and any
     transferees or assignees who agree to become bound by the provisions of
     this Agreement in accordance with Article IX hereof.

                    (b) "register," "registered," and "registration" refer to a
     registration effected by preparing and filing a Registration Statement or
     Statements in compliance with the Securities Act and pursuant to Rule 415
     under the Securities Act or any successor rule providing for offering
     securities on a continuous basis ("Rule 415"), and the declaration or
     ordering of effectiveness of such Registration Statement by the United
     States Securities and Exchange Commission (the "SEC").





                    (c) "Registrable Securities" means the Conversion Shares
     (including any Conversion Shares issuable with respect to payments under
     the Debentures) issued or issuable with respect to the Convertible
     Securities and the Warrant Shares issued or issuable with respect to the
     Warrants (without regard to any limitations on conversion or exercise) and
     any shares of capital stock issued or issuable, from time to time (with any
     adjustments), on or in exchange for or otherwise with respect to the Class
     A Common Stock or any other Registrable Securities.

                    (d) "Registration Statement" means a registration statement
     of the Company under the Securities Act pursuant to the provisions of this
     Agreement.

          1.2 Capitalized Terms. Capitalized terms used herein and not otherwise
     defined herein shall have the respective meanings set forth in the
     Securities Purchase Agreement.

                                   ARTICLE II
                                  REGISTRATION

          2.1 Mandatory Registration. (a) The Company shall prepare and file as
     soon as practicable but in any event on or prior to twenty (20) business
     days after the date of the Closing (a "Filing Date") with the SEC a
     Registration Statement on Form S-3 (or, if Form S-3 is not then available,
     on such form of Registration Statement as is then available to effect a
     registration of all of the Registrable Securities, subject to the consent
     of the Initial Purchasers (as determined pursuant to Section 11.10 hereof))
     but initially covering the resale of only 8,500,000 (subject to equitable
     adjustment for any stock splits, stock dividends, reclassification or
     similar events) shares of Class A Common Stock, including for purposes of
     this subsection (a) any PIK Debentures. The Registration Statement (and
     each amendment or supplement thereto, and each request for acceleration of
     effectiveness thereof) shall be provided to (and subject to the approval of
     (which approval shall not be unreasonably withheld or denied)) each Initial
     Purchaser and its counsel at least five (5) business days (or fewer to the
     extent provided herein) prior to its filing or other submission. The
     Company shall also prepare and file such amendments to registration
     statements and such additional registration statements as may from time to
     time be required by this Agreement.

          2.2  Underwritten Offering.  [Intentionally Deleted].

          2.3 Payments by the Company. The Company shall use its best efforts to
     cause each Registration Statement required to be filed pursuant to Section
     2.1 hereof to become effective as soon as practicable, but in no event
     later than the ninetieth (90th) day following the earlier of (a) the date
     that such Registration Statement was filed and (b) the applicable Filing
     Date (the "Registration Deadline"). If (i) a Registration Statement
     covering the Registrable Securities required to be filed by the Company
     pursuant to Section 2.1 hereof is not declared effective by the SEC on or
     before the applicable Registration Deadline (a "Registration Failure"), or
     (ii) except pursuant to a Permitted Blackout (as defined below) herein,
     after such Registration Statement has been declared effective by the SEC,
     sales of all the Registrable Securities covered thereby cannot be made
     pursuant to such Registration Statement (by reason of a stop order or the
     Company's failure to update the registration statement or any other reason
     outside the control of the Purchasers) (a "Registration Suspension"), then
     the Company will make payments to the Purchasers in such amounts and at
     such times as shall be determined pursuant to this Section 2.3 as partial
     relief for the damages to the Purchasers by reason of any such delay in or
     reduction of their ability to sell the Registrable Securities (which remedy
     shall not be exclusive of any other remedies available at law or in
     equity). In the event of a Registration Failure, the Company shall pay to
     the Purchasers an amount equal to (A) the Multiplier (as defined below)
     times (B) the Funded Amount (as defined below) times (C) the number of
     months (prorated per day for





     partial months) following the applicable Registration Deadline prior to the
     date the applicable Registration Statement filed pursuant to Section 2.1 is
     declared effective by the SEC. In addition, in the event of a Registration
     Suspension, the Company shall pay to the Purchasers an amount equal to (D)
     the Multiplier times (E) the Funded Amount times (F) the number of months
     (prorated per day for partial months) from (x) the date on which sales of
     all the Registrable Securities first cannot be made to (y) the date on
     which sales of all such Registrable Securities can again be made. With
     respect to any given Registration Statement, the Funded Amount means the
     aggregate purchase price of the Convertible Securities and Warrants
     relating to the Common Stock registered (or to be registered) on such
     Registration Statement. Amounts to be paid pursuant to this Section 2.3
     shall be paid pro rata to Purchasers based upon the number of Conversion
     Shares and Warrant Shares owned by them (including, for these purposes,
     Conversion Shares issuable upon full conversion of the Convertible
     Securities and Warrant Shares issuable upon full exercise of the Warrants
     by each Purchaser, in each case without regard to any limitations upon
     exercise and conversion contained therein) and shall be paid in cash. Such
     payments shall be made within five (5) days after the end of each period
     that gives rise to such obligation, provided that, if any such period
     extends for more than thirty (30) days, payments shall be made for each
     such thirty (30) day period within five (5) days after the end of such
     thirty (30) day period. For purposes of this Section 2.3, the "Multiplier"
     is equal to (a) for the first month of a Registration Failure or a
     Registration Suspension, 0.01; (b) for the second month of a Registration
     Failure or a Registration Suspension, 0.015; (c) for the third and all
     successive months of a Registration Failure or a Registration Suspension,
     0.02. Notwithstanding the foregoing, a Registration Suspension effected by
     the Company pursuant to a Permitted Blackout shall not give rise to an
     obligation to make such payments. For purposes hereof, "Permitted Blackout"
     shall mean the suspension of the Registration Statement after the Effective
     Date upon the good faith determination by the Company's Board of Directors
     that a material financing, acquisition or other extraordinary corporate
     transaction is in the best interest of the Company and the holders of its
     outstanding Common Stock, and that disclosure thereof to the public would
     have a material adverse effect on the ability of the Company to consummate
     such material financing, acquisition or other extraordinary corporate
     transaction, all after receiving advice to such effect from a nationally
     recognized investment banking firm or, to the extent appropriate, the
     Company's counsel which has been engaged by the Company in connection with
     such financing, acquisition or other extraordinary corporate transaction;
     provided, however, that (i) no more than two (2) such Permitted Blackouts
     may be imposed during any period of twelve (12) consecutive months and (ii)
     the aggregate duration of all Permitted Blackouts during any period of
     twelve (12) consecutive months shall be no more than twenty (20) business
     days.

          2.4 Piggy-Back Registrations. If at any time prior to the expiration
     of the Registration Period (as hereinafter defined) the Company shall file
     with the SEC a Registration Statement relating to an offering for its own
     account or the account of others under the Securities Act of any of its
     equity securities (other than on Form S-4 or Form S-8 or their then
     equivalents relating to equity securities to be issued solely in connection
     with any acquisition of any entity or business or equity securities
     issuable in connection with stock option or other employee benefit plans),
     then the Company shall send to each Purchaser who has a right to have
     Registrable Securities covered by a Registration Statement pursuant to this
     Agreement written notice of such determination and, if within fifteen (15)
     days after the date of such notice, such Purchaser shall so request in
     writing, the Company shall include in such Registration Statement all or
     any part of the Registrable Securities such Purchaser requests to be
     registered, except that if, in connection with any underwritten public
     offering for the account of the Company the managing underwriter(s) thereof
     shall impose a limitation on the number of shares of Common Stock which may
     be included in the Registration Statement





     because, in such underwriter(s)' judgment, marketing or other factors
     dictate such limitation is necessary to facilitate public distribution,
     then the Company shall be obligated to include in such Registration
     Statement only such limited portion of the Registrable Securities with
     respect to which such Purchaser has requested inclusion hereunder as the
     underwriter shall permit. Any exclusion of Registrable Securities shall be
     made pro rata among the Purchasers seeking to include Registrable
     Securities, in proportion to the number of Registrable Securities sought to
     be included by such Purchasers; provided, however, that the Company shall
     not exclude any Registrable Securities unless the Company has first
     excluded all outstanding securities, the holders of which are not entitled
     to inclusion of such securities in such Registration Statement or are not
     entitled to pro rata inclusion with the Registrable Securities; and
     provided, further, however, that, after giving effect to the immediately
     preceding proviso, any exclusion of Registrable Securities shall be made
     pro rata with holders of other securities having the right to include such
     securities in the Registration Statement. No right to registration of
     Registrable Securities under this Section 2.4 shall be construed to limit
     any registration required under Section 2.1 or 3.2 hereof. If an offering
     in connection with which a Purchaser is entitled to registration under this
     Section 2.4 is an underwritten offering, then each Purchaser whose
     Registrable Securities are included in such Registration Statement shall,
     unless otherwise agreed by the Company, offer and sell such Registrable
     Securities in an underwritten offering using the same underwriter or
     underwriters and, subject to the provisions of this Agreement, on the same
     terms and conditions as other shares of Common Stock included in such
     underwritten offering.

          2.5 Eligibility for Form S-3. The Company represents and warrants that
     it meets the requirements for the use of Form S-3 for registration of the
     re-sale by the Initial Purchasers and any other Purchaser of the
     Registrable Securities. The Company shall file all reports required to be
     filed by the Company with the SEC in a timely manner and take all other
     actions which may be required so as to maintain such eligibility for the
     use of Form S-3.

                                   ARTICLE III
                           OBLIGATIONS OF THE COMPANY

          In connection with the registration of the Registrable Securities, the
     Company shall have the following obligations, including with respect to
     each Registration Statement required to be filed hereunder:

          3.1 The Company shall prepare promptly and file with the SEC the
     Registration Statement required by Section 2.1, and cause such Registration
     Statement relating to Registrable Securities to become effective as soon as
     practicable after such filing, and keep the Registration Statement
     effective pursuant to Rule 415 and available for use at all times until
     such date as is the earlier of (i) the date on which all of the Registrable
     Securities have been sold (and no further Registrable Securities may be
     issued in the future) and (ii) the date on which all of the Registrable
     Securities (in the reasonable opinion of counsel to the Initial Purchasers)
     may be immediately sold to the public without registration and without
     restriction as to the number of Registrable Securities to be sold, whether
     pursuant to Rule 144 or otherwise (the "Registration Period"). The
     Registration Statement (including any amendments or supplements thereto and
     prospectuses contained therein and all documents incorporated by reference
     therein) shall not contain any untrue statement of a material fact or omit
     to state a material fact required to be stated therein, or necessary to
     make the statements therein not misleading.

          3.2 The Company shall prepare and file with the SEC such amendments
     (including post-effective amendments) and supplements to a Registration
     Statement and the prospectus used in connection with the Registration
     Statement as may be necessary to keep the Registration Statement effective





     and available for use at all times during the Registration Period, and,
     during such period, comply with the provisions of the Securities Act with
     respect to the disposition of all Registrable Securities of the Company
     covered by the Registration Statement until the termination of the
     Registration Period or, if earlier, such time as all of such Registrable
     Securities have been disposed of in accordance with the intended methods of
     disposition by the seller or sellers thereof as set forth in the
     Registration Statement. In the event the number of shares available under a
     Registration Statement filed pursuant to this Agreement is, at any time,
     insufficient to cover one hundred seventy-five percent (175%) of the
     Registrable Securities issued or issuable upon conversion of the
     Convertible Securities or upon exercise of the Warrants (without giving
     effect to any limitations on conversion or exercise) held by any Purchaser
     and required to be covered by such Registration Statement pursuant to
     Section 2.1, the Company shall amend, if permissible, the Registration
     Statement, or file a new Registration Statement (on the short form
     available therefor, if applicable), or both, so as to cover two hundred
     percent (200%) of the Registrable Securities issued or issuable to such
     Purchaser upon such exercise or conversion (without giving effect to any
     limitations on conversion or exercise), in each case, as soon as
     practicable, but in any event within five (5) days. The Company shall cause
     such amendment and/or new Registration Statement to become effective as
     soon as practicable following the filing thereof.

          3.3 The Company shall furnish to each Purchaser whose Registrable
     Securities are included in the Registration Statement and its legal counsel
     (a) promptly after the same is prepared and publicly distributed, filed
     with the SEC, or received by the Company, one copy of the Registration
     Statement and any amendment thereto, each preliminary prospectus and
     prospectus and each amendment or supplement thereto, and, in the case of
     the Registration Statement referred to in Section 2.1, each letter written
     by or on behalf of the Company to the SEC or the staff of the SEC, and each
     item of correspondence from the SEC or the staff of the SEC, in each case
     relating to such Registration Statement (other than any portion, if any,
     thereof which contains information for which the Company has sought
     confidential treatment), and (b) such number of copies of a prospectus,
     including a preliminary prospectus, and all amendments and supplements
     thereto and such other documents as such Purchaser may reasonably request
     in order to facilitate the disposition of the Registrable Securities owned
     (or to be owned) by such Purchaser.

          3.4 The Company shall (a) register and qualify the Registrable
     Securities covered by the Registration Statement under securities laws of
     such jurisdictions in the United States as each Purchaser who holds (or has
     the right to hold) Registrable Securities being offered reasonably
     requests, (b) prepare and file in those jurisdictions such amendments
     (including post-effective amendments) and supplements to such registrations
     and qualifications as may be necessary to maintain the effectiveness
     thereof and availability for use during the Registration Period, (c) take
     such other actions as may be necessary to maintain such registrations and
     qualifications in effect at all times during the Registration Period, and
     (d) take all other actions reasonably necessary or advisable to qualify the
     Registrable Securities for sale in such jurisdictions; provided, however,
     that the Company shall not be required in connection therewith or as a
     condition thereto to (i) qualify to do business in any jurisdiction where
     it would not otherwise be required to qualify but for this Section 3.4,
     (ii) subject itself to general taxation in any such jurisdiction, (iii)
     file a general consent to service of process in any such jurisdiction, (iv)
     provide any undertakings that cause the Company material expense or burden,
     or (v) make any change in its charter or by-laws, which in each case the
     board of directors of the Company determines to be contrary to the best
     interests of the Company and its stockholders.

          3.5  [Intentionally Deleted].





          3.6 As soon as practicable after becoming aware of such event, the
     Company shall notify (by telephone and also by facsimile and reputable
     overnight courier) each Purchaser of the happening of any event, of which
     the Company has knowledge, as a result of which the prospectus included in
     the Registration Statement, as then in effect, includes an untrue statement
     of a material fact or omission to state a material fact required to be
     stated therein or necessary to make the statements therein not misleading,
     and use its best efforts as soon as possible (but in any event within five
     (5) days) to prepare a supplement or amendment to the Registration
     Statement (and make all required filings with the SEC) to correct such
     untrue statement or omission, and the Company shall simultaneously (and
     thereafter as requested) deliver such number of copies of such supplement
     or amendment (or other applicable document) to each Purchaser as such
     Purchaser may request in writing.

          3.7 The Company shall use its best efforts to prevent the issuance of
     any stop order or other suspension of effectiveness of a Registration
     Statement, and, if such an order is issued, to obtain the withdrawal of
     such order at the earliest practicable time and the Company shall
     immediately notify by facsimile each Purchaser (at the facsimile number for
     such Purchaser set forth on the signature page hereto) who holds
     Registrable Securities being sold (or, in the event of an underwritten
     offering, the managing underwriters) of the issuance of such order and the
     resolution thereof.

          3.8 The Company shall permit a counsel designated by each Initial
     Purchaser to review the Registration Statement and all amendments and
     supplements thereto a reasonable period of time prior to their filing with
     the SEC, and not file any document in a form to which such counsel
     reasonably objects.

          3.9 The Company shall make generally available to its security holders
     as soon as practical, but not later than ninety (90) days after the close
     of the period covered thereby, an earnings statement (in form complying
     with the provisions of Rule 158 under the Securities Act) covering a
     twelve-month period beginning not later than the first day of the Company's
     fiscal quarter next following the effective date of the Registration
     Statement.

          3.10 [Intentionally Deleted].

          3.11 The Company shall make available for inspection by (i) any
     Purchaser and (ii) attorneys and accountants retained by any Purchaser
     (collectively, the "Inspectors") all pertinent financial and other records,
     and pertinent corporate documents and properties of the Company
     (collectively, the "Records"), as shall be reasonably deemed necessary by
     each Inspector and cause the Company's officers, directors and employees to
     supply all information which any Inspector may reasonably request;
     provided, however, that each Inspector shall hold in confidence and shall
     not make any disclosure (except to a Purchaser) of any Record or other
     information which the Company determines in good faith to be confidential,
     and of which determination the Inspectors are so notified in writing,
     unless (a) the disclosure of such Records is necessary to avoid or correct
     a misstatement or omission in any Registration Statement or is otherwise
     required to be disclosed in such Registration Statement to permit Purchaser
     to sell under such Registration Statement, (b) the release of such Records
     is ordered pursuant to a subpoena or other order from a court or government
     body of competent jurisdiction, or is otherwise required by applicable law
     or legal process or (c) the information in such Records has been made
     generally available to the public other than by disclosure in violation of
     this or any other agreement (to the knowledge of the relevant Purchaser).
     The Company shall not be required to disclose any confidential information
     in such Records to any Inspector until and unless such Inspector shall have
     entered into confidentiality agreements (in form and reasonable substance
     satisfactory to the Company) with the Company with respect thereto,
     substantially in the form of this Section 3.11.





     Each Purchaser agrees that it shall, upon learning that disclosure of such
     Records is sought in or by a court or governmental body of competent
     jurisdiction or through other means, give prompt notice to the Company and
     allow the Company, at its expense, to undertake appropriate action to
     prevent disclosure of, or to obtain a protective order for, the Records
     deemed confidential. Nothing herein shall be deemed to limit a Purchaser's
     ability to sell Registrable Securities in a manner which is consistent with
     applicable laws and regulations.

          3.12 The Company shall hold in confidence and not make any disclosure
     of information concerning a Purchaser provided to the Company unless (a)
     disclosure of such information is necessary to comply with federal or state
     securities laws, (b) the disclosure of such information is necessary to
     avoid or correct a misstatement or omission in any Registration Statement,
     (c) the release of such information is ordered pursuant to a subpoena or
     other order from a court or governmental body of competent jurisdiction or
     is otherwise required by applicable law or legal process, (d) such
     information has been made generally available to the public other than by
     disclosure in violation of this or any other agreement (to the knowledge of
     the Company), or (e) such Purchaser consents to the form and content of any
     such disclosure. The Company agrees that it shall, upon learning that
     disclosure of such information concerning a Purchaser is sought in or by a
     court or governmental body of competent jurisdiction or through other
     means, give prompt notice to such Purchaser prior to making such
     disclosure, and allow the Purchaser, at its expense, to undertake
     appropriate action to prevent disclosure of, or to obtain a protective
     order for, such information.

          3.13 From and after each Closing, the Company shall cause the listing
     and the continuation of listing of all the Registrable Securities related
     to such Closing and required to be covered by a Registration Statement on
     The Nasdaq National Market or the New York Stock Exchange, and cause the
     Registrable Securities to be quoted or listed on each additional national
     securities exchange or quotation system upon which the Class A Common Stock
     is then listed or quoted.

          3.14 The Company shall provide a transfer agent and registrar, which
     may be a single entity, for the Registrable Securities not later than the
     effective date of the Registration Statement.

          3.15 The Company shall cooperate with the Purchasers who hold
     Registrable Securities being offered and the managing underwriter or
     underwriters, if any, to facilitate the timely preparation and delivery of
     certificates (not bearing any restrictive legends) representing Registrable
     Securities to be offered pursuant to the Registration Statement and enable
     such certificates to be in such denominations or amounts, as the case may
     be, as the managing underwriter or underwriters, if any, or the Purchasers
     may reasonably request and registered in such names as the managing
     underwriter or underwriters, if any, or the Purchasers may request, and,
     within two (2) business day after a Registration Statement which includes
     Registrable Securities is ordered effective by the SEC, the Company shall
     cause legal counsel selected by the Company to deliver, to the transfer
     agent for the Registrable Securities (with copies to the Purchasers whose
     Registrable Securities are included in such Registration Statement) an
     opinion of such counsel in the form attached hereto as Exhibit 1.

          3.16 At the request of any Purchaser, the Company shall promptly
     prepare and file with the SEC such amendments (including post-effective
     amendments) and supplements to a Registration Statement and the prospectus
     used in connection with the Registration Statement as may be necessary in
     order to change the plan of distribution set forth in such Registration
     Statement.

          3.17 The Company shall comply with all applicable laws related to a
     Registration Statement and offering and sale of securities covered by the





     Registration Statement and all applicable rules and regulations of
     governmental authorities in connection therewith (including, without
     limitation, the Securities Act and the Securities Exchange Act of 1934, as
     amended, and the rules and regulations promulgated by the Commission).

          3.18 The Company shall take all such other actions as any Purchaser or
     the underwriters, if any, reasonably request in order to expedite or
     facilitate the disposition of such Registrable Securities.

          3.19 From and after the date of this Agreement, the Company shall not,
     and shall not agree to, allow the holders of any securities of the Company
     (other than Purchasers with respect to Registrable Securities) to include
     any of their securities in any Registration Statement or any amendment or
     supplement thereto under Section 2.1 or 3.2 hereof without the consent of
     the Initial Purchasers of a majority of the Registrable Securities.

          3.20 The Registration Statement shall state that it covers such
     indeterminate number of additional shares as may be issuable upon
     conversion of the Convertible Securities or exercise of the Warrants to
     prevent dilution resulting from stock splits, stock dividends and other
     similar transactions.

                                   ARTICLE IV
                          OBLIGATIONS OF THE PURCHASERS

          In connection with the registration of the Registrable Securities,
     each Purchaser shall have the following obligations:

          4.1 Purchaser shall furnish to the Company such information regarding
     itself, the Registrable Securities held by it and the intended method of
     disposition of the Registrable Securities held by it as shall be required
     to effect the registration of such Registrable Securities. At least five
     (5) business days prior to the first anticipated filing date of the
     Registration Statement, the Company shall notify each Purchaser of the
     information the Company requires from each such Purchaser.

          4.2 Each Purchaser, by such Purchaser's acceptance of the Registrable
     Securities, agrees to cooperate with the Company as reasonably requested by
     the Company in connection with the preparation and filing of the
     Registration Statements hereunder, unless such Purchaser has notified the
     Company in writing of such Purchaser's election to exclude all of such
     Purchaser's Registrable Securities from the Registration Statement.

          4.3 Each Purchaser whose Registrable Securities are included in a
     Registration Statement understands that the Securities Act may require
     delivery of a prospectus relating thereto in connection with any sale
     thereof pursuant to such Registration Statement, and each such Purchaser
     shall use its reasonable efforts to comply with the applicable prospectus
     delivery requirements of the Securities Act in connection with any such
     sale.

          4.4  [Intentionally Deleted].

          4.5 Each Purchaser agrees that, upon receipt of written notice from
     the Company of the happening of any event of the kind described in Section
     3.6, such Purchaser will immediately discontinue disposition of Registrable
     Securities pursuant to the Registration Statement covering such Registrable
     Securities until such Purchaser's receipt of the copies of the supplemented
     or amended prospectus contemplated by Section 3.6 or advice that a
     supplement or amendment is not required and, if so directed by the Company,
     such Purchaser shall deliver to the Company (at the expense of the Company)
     or destroy (and deliver to the Company a certificate of destruction) all
     copies in such Purchaser's possession (other than a limited number of
     permanent file copies), of the prospectus covering such Registrable
     Securities current at the time of receipt of





     such notice. Purchaser's obligations under this paragraph shall in no way
     limit the Company's obligations under this Agreement or Purchaser's rights
     or remedies against the Company with respect to any breach or threatened
     breach by the Company of any such obligations.

          4.6  [Intentionally Deleted].

                                    ARTICLE V
                            EXPENSES OF REGISTRATION

          All expenses, other than underwriting discounts and commissions,
     incurred in connection with registrations, filings or qualifications
     pursuant to Articles II and III, including, without limitation, all
     registration, listing and qualification fees, printers and accounting fees,
     the fees and disbursements of counsel for the Company, and the reasonable
     fees and disbursements of Inspectors selected by the Purchasers pursuant to
     Section 3.11, hereof shall be borne by the Company; provided, however that
     the Company shall be required to bear the reasonable fees and disbursements
     of such Inspectors only if reasonably requested by a Purchaser in writing
     (taking into account any applicable legal precedent and any SEC staff
     positions) and consented to by the Company after consultation with its
     counsel (which consent will not be unreasonably withheld based upon all
     relevant facts and circumstances and taking into account the advice of such
     counsel).

                                   ARTICLE VI
                                 INDEMNIFICATION

          In the event any Registrable Securities are included in a Registration
     Statement under this Agreement:

          6.1 To the extent permitted by law, the Company will indemnify, hold
     harmless and defend (a) each Purchaser who holds such Registrable
     Securities, (b) each underwriter of Registrable Securities and (c) the
     directors, officers, partners, members, employees, agents and persons who
     control any Purchaser within the meaning of Section 15 of the Securities
     Act or Section 20 of the Securities Exchange Act of 1934, as amended (the
     "Exchange Act"), if any, (each, an "Indemnified Person"), against any
     losses, claims, damages, liabilities or expenses (collectively, together
     with actions, proceedings or inquiries whether or not in any court, before
     any administrative body or by any regulatory or self-regulatory
     organization, whether commenced or threatened, in respect thereof,
     "Claims") to which any of them may become subject insofar as such Claims
     arise out of or are based upon: (i) any untrue statement or alleged untrue
     statement of a material fact in a Registration Statement or the omission or
     alleged omission to state therein a material fact required to be stated or
     necessary to make the statements therein not misleading, (ii) any untrue
     statement or alleged untrue statement of a material fact contained in any
     preliminary prospectus if used prior to the effective date of such
     Registration Statement, or contained in the final prospectus (as amended or
     supplemented, if the Company files any amendment thereof or supplement
     thereto with the SEC) or the omission or alleged omission to state therein
     any material fact necessary to make the statements made therein, in light
     of the circumstances under which the statements therein were made, not
     misleading, or (iii) any violation or alleged violation by the Company of
     the Securities Act, the Exchange Act, any other law, including, without
     limitation, any state securities law, or any rule or regulation thereunder
     relating to the offer or sale of the Registrable Securities (the matters in
     the foregoing clauses (i) through (iii) being, collectively, "Violations").
     The Company shall reimburse each such Indemnified Person, promptly as such
     expenses are incurred and are due and payable, for any reasonable legal
     fees or other reasonable expenses incurred by them in connection with
     investigating or defending any such Claim. Notwithstanding anything to the
     contrary contained herein, the indemnification agreement contained in this
     Section 6.1: (x) shall not apply to an Indemnified Person with respect to a
     Claim arising out of or





     based upon a Violation which occurs in reliance upon and in conformity with
     information furnished in writing to the Company by such Indemnified Person
     expressly for use in the Registration Statement or any such amendment
     thereof or supplement thereto; (y) shall not apply to amounts paid in
     settlement of any Claim if such settlement is effected without the prior
     written consent of the Company, which consent shall not be unreasonably
     withheld; and (z) with respect to any preliminary prospectus, shall not
     inure to the benefit of any Indemnified Person if the untrue statement or
     omission of material fact contained in the preliminary prospectus was
     corrected on a timely basis in the prospectus, as then amended or
     supplemented, if such corrected prospectus was timely made available by the
     Company pursuant to Section 3.3 hereof, and the Indemnified Person was
     promptly advised in writing not to use the incorrect prospectus prior to
     the use giving rise to a Violation and such Indemnified Person,
     notwithstanding such advice, used it. Such indemnity shall remain in full
     force and effect regardless of any investigation made by or on behalf of
     the Indemnified Person and shall survive the transfer of the Registrable
     Securities by a Purchaser pursuant to Article IX.

          6.2 In connection with any Registration Statement in which a Purchaser
     is participating, each such Purchaser agrees to indemnify, hold harmless
     and defend, to the same extent and in the same manner set forth in Section
     6.1, the Company, each of its directors, each of its officers who signs the
     Registration Statement, its employees, agents and persons, if any, who
     control the Company within the meaning of Section 15 of the Securities Act
     or Section 20 of the Exchange Act, and any other stockholder selling
     securities pursuant to the Registration Statement, together with its
     directors, officers and members, and any person who controls such
     stockholder or underwriter within the meaning of the Securities Act or the
     Exchange Act (such an "Indemnified Party"), against any Claim to which any
     of them may become subject, under the Securities Act, the Exchange Act or
     otherwise, insofar as such Claim arises out of or is based upon any
     Violation, in each case to the extent (and only to the extent) that such
     Violation occurs in reliance upon and in conformity with written
     information furnished to the Company by such Purchaser expressly for use in
     connection with such Registration Statement; and such Purchaser will
     reimburse any legal or other expenses (promptly as such expenses are
     incurred and are due and payable) reasonably incurred by them in connection
     with investigating or defending any such Claim; provided, however, that the
     indemnity agreement contained in this Section 6.2 shall not apply to
     amounts paid in settlement of any Claim if such settlement is effected
     without the prior written consent of such Purchaser, which consent shall
     not be unreasonably withheld; provided, further, however, that a Purchaser
     shall be liable under this Agreement (including this Section 6.2 and
     Article VII) for only that amount as does not exceed the net proceeds
     actually received by such Purchaser as a result of the sale of Registrable
     Securities pursuant to such Registration Statement. Such indemnity shall
     remain in full force and effect regardless of any investigation made by or
     on behalf of such Indemnified Party and shall survive the transfer of the
     Registrable Securities by a Purchaser pursuant to Article IX.
     Notwithstanding anything to the contrary contained herein, the
     indemnification agreement contained in this Section 6.2 with respect to any
     preliminary prospectus shall not inure to the benefit of any Indemnified
     Party if the untrue statement or omission of material fact contained in the
     preliminary prospectus was corrected on a timely basis in the prospectus,
     as then amended or supplemented, and the Indemnified Party failed to
     utilize such corrected prospectus.

          6.3 Promptly after receipt by an Indemnified Person or Indemnified
     Party under this Article VI of notice of the commencement of any action
     (including any governmental action), such Indemnified Person or Indemnified
     Party shall, if a Claim in respect thereof is to be made against any
     indemnifying party under this Article VI, deliver to the indemnifying party
     a written notice of the commencement thereof, and the indemnifying party
     shall have the right to participate in, and, to the extent the indemnifying
     party so desires, jointly with any other





     indemnifying party similarly noticed, to assume control of the defense
     thereof with counsel mutually satisfactory to the indemnifying party and
     the Indemnified Person or the Indemnified Party, as the case may be;
     provided, however, that such indemnifying party shall diligently pursue
     such defense and that such indemnifying party shall not be entitled to
     assume such defense and an Indemnified Person or Indemnified Party shall
     have the right to retain its own counsel with the fees and expenses to be
     paid by the indemnifying party, if the representation by such counsel of
     the Indemnified Person or Indemnified Party and the indemnifying party
     would be inappropriate due to actual or potential conflicts of interest
     between such Indemnified Person or Indemnified Party and any other party
     represented by such counsel in such proceeding or the actual or potential
     defendants in, or targets of, any such action include both the Indemnified
     Person or the Indemnified Party and any such Indemnified Person or
     Indemnified Party reasonably determines that there may be legal defenses
     available to such Indemnified Person or Indemnified Party which are
     different from or in addition to those available to such indemnifying
     party. The indemnifying party shall pay for only one separate legal counsel
     for the Indemnified Persons or the Indemnified Parties, as applicable, and
     such legal counsel shall be selected by Purchasers holding a
     majority-in-interest of the Registrable Securities included in the
     Registration Statement to which the Claim relates (with the approval of the
     Initial Purchasers if they hold Registrable Securities included in such
     Registration Statement), if the Purchasers are entitled to indemnification
     hereunder, or by the Company, if the Company is entitled to indemnification
     hereunder, as applicable. The failure to deliver written notice to the
     indemnifying party within a reasonable time of the commencement of any such
     action shall not relieve such indemnifying party of any liability to the
     Indemnified Person or Indemnified Party under this Article VI, except to
     the extent that the indemnifying party is actually prejudiced in its
     ability to defend such action. The indemnification required by this Article
     VI shall be made by periodic payments of the amount thereof during the
     course of the investigation or defense, as such expense, loss, damage or
     liability is incurred and is due and payable.

                                   ARTICLE VII
                                  CONTRIBUTION

          To the extent any indemnification by an indemnifying party is
     prohibited or limited by law, the indemnifying party agrees to make the
     maximum contribution with respect to any amounts for which it would
     otherwise be liable under Article VI to the fullest extent permitted by
     law; provided, however, that (i) no person guilty of fraudulent
     misrepresentation (within the meaning of Section 11(f) of the Securities
     Act) shall be entitled to contribution from any person of Registrable
     Securities who was not guilty of such fraudulent misrepresentation, and
     (ii) contribution (together with any indemnification or other obligations
     under this Agreement) by any seller of Registrable Securities shall be
     limited in amount to the net amount of proceeds received by such seller
     from the sale of such Registrable Securities.

                                  ARTICLE VIII
                         REPORTS UNDER THE EXCHANGE ACT

          With a view to making available to the Purchasers the benefits of Rule
     144 promulgated under the Securities Act or any other similar rule or
     regulation of the SEC that may at any time permit the Purchasers to sell
     securities of the Company to the public without registration ("Rule 144"),
     the Company agrees to:

          8.1 File with the SEC in a timely manner and make and keep available
     all reports and other documents required of the Company under the
     Securities Act and the Exchange Act so long as the Company remains subject
     to such requirements (it being understood that nothing herein shall limit
     the Company's obligations under Section 4.3 of the Securities Purchase
     Agreement) and the filing and availability of such reports and other





     documents is required for the applicable provisions of Rule 144; and

          8.2 Furnish to each Purchaser so long as such Purchaser holds
     Convertible Securities, Warrants or Registrable Securities, promptly upon
     request, (i) a written statement by the Company that it has complied with
     the reporting requirements of Rule 144, the Securities Act and the Exchange
     Act, (ii) a copy of the most recent annual or quarterly report of the
     Company and such other reports and documents so filed by the Company, and
     (iii) such other information as may be reasonably requested to permit the
     Purchasers to sell such securities pursuant to Rule 144 without
     registration.

                                   ARTICLE IX
                        ASSIGNMENT OF REGISTRATION RIGHTS

          The rights of the Purchasers hereunder, including the right to have
     the Company register Registrable Securities pursuant to this Agreement,
     shall be automatically assigned by each Purchaser to any transferee of all
     or any portion of the Convertible Securities or the Registrable Securities
     if: (a) the Purchaser agrees in writing with the transferee or assignee to
     assign such rights, and a copy of such agreement is furnished to the
     Company within a reasonable time after such assignment, (b) the Company is,
     within a reasonable time after such transfer or assignment, furnished with
     written notice of (i) the name and address of such transferee or assignee,
     and (ii) the securities with respect to which such registration rights are
     being transferred or assigned, (c) following such transfer or assignment,
     the further disposition of such securities by the transferee or assignee is
     restricted under the Securities Act or applicable state securities laws,
     and (d) at or before the time the Company receives the written notice
     contemplated by clause (ii) of this sentence, the transferee or assignee
     agrees in writing for the benefit of the Company to be bound by all of the
     provisions contained herein. The rights of a Purchaser hereunder with
     respect to any Registrable Securities not transferred (and not represented
     by Convertible Securities or Warrants transferred) shall not be assigned by
     virtue of the transfer of other Registrable Securities or transferred
     Convertible Securities or Warrants representing other Registrable
     Securities.

                                    ARTICLE X
                        AMENDMENT OF REGISTRATION RIGHTS

          Provisions of this Agreement may be amended and the observance thereof
     may be waived (either generally or in a particular instance and either
     retroactively or prospectively), only with written consent of the Company,
     the Initial Purchasers (but not an Initial Purchaser who no longer owns any
     Convertible Securities or Registrable Securities and who is not affected by
     such amendment or waiver) and Purchasers who hold a majority interest of
     the Registrable Securities. Any amendment or waiver effected in accordance
     with this Article X shall be binding upon each Purchaser and the Company.
     Notwithstanding the foregoing, no amendment or waiver shall retroactively
     affect any Purchaser without its comment or prospectively adversely affect
     any Purchaser who no longer owns any Convertible Securities, Warrants or
     Registrable Securities without its consent. No amendment or waiver may
     adversely affect one or more Purchasers or group of Purchasers vis-a-vis
     any other Purchaser or group of Purchasers. Neither Article VI nor Article
     VII hereof may be amended or waived in a manner adverse to a Purchaser
     without its consent. Notwithstanding anything to the contrary contained in
     this Article X, no amendment or waiver shall be applicable to an Initial
     Purchaser who does not consent in writing thereto.

                                   ARTICLE XI
                                  MISCELLANEOUS

          11.1 A person or entity is deemed to be a holder (or a holder in
     interest) of Registrable Securities whenever such person or entity owns of





     record such Registrable Securities (or the Convertible Securities or
     Warrants which may be converted into or exercised for Registrable
     Securities). If the Company receives conflicting instructions, notices or
     elections from two or more persons or entities with respect to the same
     Registrable Securities, the Company shall act upon the basis of
     instructions, notice or election received from the registered owner of such
     Registrable Securities (or Convertible Securities or Warrants, as the case
     may be).

          11.2 Any notices herein required or permitted to be given shall be in
     writing and may be personally served or delivered by courier or by
     machine-generated confirmed telecopy, and shall be deemed delivered at the
     time and date of receipt (which shall include telephone line facsimile
     transmission). The addresses for such communications shall be:

               If to the Company:

                    Westell Technologies, Inc.
                    750 N. Commons Drive
                    Aurora, IL 60504
                    Telecopy: (630) 375-4940
                    Attention: Stephen J. Hawrysz

               with a copy to:

                    Neal J. White, P.C.
                    McDermott, Will & Emery
                    227 West Monroe Street
                    Chicago, IL 60606
                    Telecopy:  (312) 984-3669      
                    Attention:  (312) 984-7579    

     if to any Purchaser, at such address as such Purchaser, shall have provided
     in writing to the Company, or at such other address as each such party
     furnishes by notice given in accordance with this Section 11.2.

          11.3 Failure of any party to exercise any right or remedy under this
     Agreement or otherwise, or delay by a party in exercising such right or
     remedy, shall not operate as a waiver thereof.

          11.4 This Agreement shall be governed by and construed in accordance
     with the laws of the State of New York applicable to contracts made and to
     be performed in the State of New York. The Company irrevocably consents to
     the jurisdiction of the federal courts located in the State of New York and
     the state courts of the State of New York located in the County of New York
     in the State of New York in any suit or proceeding based on or arising
     under this Agreement and irrevocably agrees that all claims in respect of
     such suit or proceeding may be determined in such courts. The Company
     irrevocably waives the defense of an inconvenient forum to the maintenance
     of such suit or proceeding. The parties hereto further agree that service
     of process upon the parties hereto mailed by first class mail shall be
     deemed in every respect effective service of process upon each such party
     in any such suit or proceeding. Nothing herein shall affect either party's
     right to serve process in any other manner permitted by law. The parties
     hereto agree that a final non-appealable judgment in any such suit or
     proceeding shall be conclusive and may be enforced in other jurisdictions
     by suit on such judgment or in any other lawful manner.

          11.5 This Agreement, the Convertible Securities, Warrants and the
     Securities Purchase Agreement (including all schedules and exhibits thereto
     and all certificates and opinions required thereby) constitute the entire
     agreement among the parties hereto with respect to the subject matter
     hereof and thereof. There are no restrictions, promises, warranties or
     undertakings, other than those set forth or referred to herein and therein.
     This Agreement, the Convertible Securities, the Warrants and the Securities
     Purchase Agreement supersede all prior





     agreements and understandings among the parties hereto with respect to the
     subject matter hereof and thereof.

          11.6 Subject to the requirements of Article IX hereof, this Agreement
     shall inure to the benefit of and be binding upon the successors and
     assigns of each of the parties hereto. Notwithstanding anything to the
     contrary contained herein, including, without limitation, Article IX, the
     rights of a Purchaser hereunder shall be assignable to and exercisable by a
     bona fide pledgee of the Registrable Securities in connection with a
     Purchaser s margin or brokerage accounts.

          11.7 The headings in this Agreement are for convenience of reference
     only and shall not limit or otherwise affect the meaning hereof.

          11.8 This Agreement may be executed in two or more counterparts, each
     of which shall be deemed an original but all of which shall constitute one
     and the same agreement. This Agreement, once executed by a party, may be
     delivered to the other party hereto, by facsimile transmission of a copy of
     this Agreement bearing the signature of the party so delivering this
     Agreement.

          11.9 Each party shall do and perform, or cause to be done and
     performed, all such further acts and things, and shall execute and deliver
     all such other agreements, certificates, instruments and documents, as the
     other party may reasonably request in order to carry out the intent and
     accomplish the purposes of this Agreement and the consummation of the
     transactions contemplated hereby.

          11.10     [Intentionally Deleted].

          11.11 The initial number of Registrable Securities included on any
     Registration Statement shall be allocated pro rata among the Purchasers
     based upon the number of Registrable Securities held by each Purchaser at
     the time of establishment of such number. In the event a Purchaser shall
     sell or otherwise transfer any of such holder's Registrable Securities,
     each transferee shall be allocated a pro rata portion of the number of
     Registrable Securities included on a Registration Statement for such
     transferor. Any shares of Common Stock included on a Registration Statement
     and which remain allocated to any person or entity which does not hold any
     Registrable Securities shall be allocated to the remaining Purchasers, pro
     rata based on the number of shares of Registrable Securities then held by
     such Purchasers. Without implication that the contrary would otherwise be
     true, for purposes of this paragraph, all Convertible Securities and
     Warrants then outstanding shall be assumed converted into and exercised for
     Registrable Securities (without giving effect to any limitations on
     conversion or exercise).

          11.12 If any provision of this Agreement shall be invalid or
     unenforceable, such invalidity or unenforceability shall not affect the
     validity or enforceability of the remainder of this Agreement.

          IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
     executed as of the date first above written.


     WESTELL TECHNOLOGIES, INC.


     By:
        Name: 
        Title: 

     Address:

     Facsimile Number:





     INITIAL PURCHASERS:

     CASTLE CREEK TECHNOLOGY PARTNERS LLC

          By:  CASTLE CREEK PARTNERS LLC
          Its: Investment Manager

          By:  ___________________________________
          Name:     John D. Ziegelman
          Title:    Managing Member

          Address:
               77 W. Wacker Drive, Suite 4040
               Chicago, IL 60601
          Facsimile Number:
               (312) 499-6999


     MARSHALL CAPITAL MANAGEMENT, INC.

          By:  ___________________________________
          Name:
          Title:

          Address:
          Facsimile Number:


     CAPITAL VENTURES INTERNATIONAL

          By:  ___________________________________
          Name:
          Title:

          Address:
          Facsimile Number:


                                                                       EXHIBIT 1
                                                                 TO REGISTRATION
                                                                RIGHTS AGREEMENT
                                     [Date]
     [Name and address
     of transfer agent]

                    RE: WESTELL TECHNOLOGIES, INC.

     Ladies and Gentlemen:

          We are counsel to Westell Technologies, Inc., a Delaware corporation
     (the "Company"), and we understand that [Name of Purchaser] (the "Holder")
     has purchased from the Company an amount of the Company s 6% Subordinated
     Convertible Debentures (the "Debentures") convertible into shares of the
     Company's Class A common stock, par value $0.01 per share (the "Common
     Stock"). The Debentures were purchased by the Holder pursuant to a
     Securities Purchase Agreement, dated as of April 14, 1999, by and among the
     Company and the signatories thereto (the "Agreement"). Pursuant to a
     Registration Rights Agreement, dated as of April 15, 1999, by and among the
     Company and the signatories thereto (the "Registration Rights Agreement"),
     the Company agreed with the Holder, among other things, to register the
     Registrable Securities (as that term is defined in the Registration Rights
     Agreement) under the Securities Act of 1933, as amended (the "Securities
     Act"), upon the terms provided in the Registration Rights Agreement. In
     connection with the Company's obligations under the Registration Rights
     Agreement, on April __, 1999, the Company filed a Registration Statement on
     Form S-_____ (File No. 333-





     __________) (the "Registration Statement") with the Securities and Exchange
     Commission (the "SEC") relating to the Registrable Securities, which names
     the Holder as a selling stockholder thereunder.

          [Other customary introductory and scope of examination language to be
     inserted]

          Based on the foregoing, we are of the opinion that the Registrable
     Securities have been registered under the Securities Act.

               [Other appropriate customary language to be included.]

                                        Very truly yours,

     cc:  [Name of Purchaser]