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                                                                     EXHIBIT 4.3


                                                          FEDERAL IDENTIFICATION
                                                          NO. 04-2997834
                                                              ------------------


                       THE COMMONWEALTH OF MASSACHUSETTS
- -----------                 WILLIAM FRANCIS GALVIN
Examiner                 Secretary of the Commonwealth
             One Ashburton Place, Boston, Massachusetts 02108-1512

                        CERTIFICATE OF VOTE OF DIRECTORS
                    ESTABLISHING A CLASS OR SERIES OF STOCK
                    (GENERAL LAWS, CHAPTER 156B, SECTION26)

             We,     Spiros Jamas                                 *President 
                 -----------------------------------------------,

             and     D. Davidson Easson, Jr.                      *Clerk 
                 -----------------------------------------------,

             of ALPHA-BETA TECHNOLOGY, INC.
                -------------------------------------------------------------,
                             (Exact name of corporation)

             located at: One Innovation Drive, Worcester, Massachusetts 01605
                        -----------------------------------------------------,
                           (Street Address of corporation in Massachusetts)

             do hereby certify that at a meeting of the directors of the 
             corporation held on October 5, 1998, the following vote amending
             and restating the relative rights and preferences of a series of
             stock prior to issuance was duly adopted:

                    See attached pages 2A through 28A and 2B










             *Delete the inapplicable words.
- -----------  NOTE: VOTES FOR WHICH THE SPACE PROVIDED ABOVE IS NOT SUFFICIENT 
P.C.         SHOULD BE PROVIDED ON ONE SIDE OF SEPARATE 8 1/2 x 11 SHEETS OF
             WHITE PAPER, NUMBERED 2A, 2B, ETC., WITH A LEFT MARGIN OF AT LEAST
             1 INCH.

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                        CERTIFICATE OF VOTE OF DIRECTORS
                         OF ALPHA-BETA TECHNOLOGY, INC.
                    AMENDING AND RESTATING TERMS OF SERIES F
                           CONVERTIBLE PREFERRED STOCK
                                PRIOR TO ISSUANCE

         WHEREAS, on October 16, 1998, Alpha-Beta Technology, Inc. (the
"COMPANY"), a corporation organized and existing under the Massachusetts
Business Corporation Law (the "MBCL"), filed a Certificate of Vote of Directors
Establishing Series F Convertible Preferred Stock with the Secretary of State of
The Commonwealth of Massachusetts certifying that the Board of Directors of the
Company adopted votes (i) authorizing three thousand (3,000) shares of the
Company's Series F Convertible Preferred Stock out of the Company's previously
authorized preferred stock, par value $0.01 per share (the "PREFERRED STOCK"),
and (ii) providing for the designations, preferences and relative participating,
optional or other rights, and the qualifications, limitations or restrictions
(collectively, "RIGHTS AND RESTRICTIONS") thereof;

         WHEREAS, the Company has not yet issued any shares of the Series F
Convertible Preferred Stock; and

         WHEREAS, the Company has decided to amend and restate the Rights and
Restrictions of the Series F Convertible Preferred Stock.

         NOW THEREFORE, the Company does hereby certify that pursuant to
authority conferred upon the Company's Board of Directors by the Company's
Restated Articles of Organization, as amended, and pursuant to Section 26 of the
MBCL, the Board of Directors of the Company authorized the amendment and
restatement of the Rights and Restrictions of the Series F Convertible Preferred
Stock as follows:

                           VOTED, to amend and restate the Rights and
                  Restrictions of the Company's Series F Convertible Preferred
                  Stock (the "Preferred Shares"), par value $0.01 per share as
                  follows:

         (1)      DIVIDENDS. The Preferred Shares shall not bear any dividends.

         (2)      HOLDER'S CONVERSION OF PREFERRED SHARES. A holder of Preferred
Shares shall

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have the right, at such holder's option, to convert the Preferred Shares into
shares of the Company's common stock, $0.01 par value per share (the "COMMON
STOCK"), on the following terms and conditions:

                  (a)      CONVERSION RIGHT. At any time or times on or after
         the Issuance Date (as defined below), any holder of Preferred Shares
         shall be entitled to convert any whole number of Preferred Shares into
         fully paid and nonassessable shares (rounded to the nearest whole share
         in accordance with Section 2(h)) of Common Stock, at the Conversion
         Rate (as defined below); provided, however, that in no event shall any
         holder be entitled to convert Preferred Shares in excess of that number
         of Preferred Shares which, upon giving effect to such conversion, would
         cause the aggregate number of shares of Common Stock beneficially owned
         by the holder and its affiliates to exceed 4.99% of the outstanding
         shares of the Common Stock following such conversion. For purposes of
         the foregoing proviso, the aggregate number of shares of Common Stock
         beneficially owned by the holder and its affiliates shall include the
         number of shares of Common Stock issuable upon conversion of the
         Preferred Shares with respect to which the determination of such
         proviso is being made, but shall exclude the number of shares of Common
         Stock which would be issuable upon (i) conversion of the remaining,
         nonconverted Preferred Shares beneficially owned by the holder and its
         affiliates and (ii) exercise or conversion of the unexercised or
         unconverted portion of any other securities of the Company (including,
         without limitation, any warrants or convertible preferred stock)
         subject to a limitation on conversion or exercise analogous to the
         limitation contained herein beneficially owned by the holder and its
         affiliates. Except as set forth in the preceding sentence, for purposes
         of this Section 2(a), beneficial ownership shall be calculated in
         accordance with Section 13(d) of the Securities Exchange Act of 1934,
         as amended.

                  (b)      CONVERSION RATE AND OTHER DEFINITIONS. The number of
         shares of Common Stock issuable upon conversion of each of the
         Preferred Shares pursuant to Sections (2)(a) and 2(g) shall be
         determined according to the following formula (the "CONVERSION RATE"):

                           (.06)(N/365)(1,000) + 1,000
                           ---------------------------
                                 Conversion Price

         For purposes of this Certificate of Designations, the following terms
         shall have the following meanings:


                           (i)      "CONVERSION PRICE" means, as of any
                  Conversion Date (as defined below) or other date of
                  determination, the lower of the Fixed Conversion Price and the
                  Floating Conversion Price, each in effect as of such date and
                  subject to adjustment as provided herein;

                           (ii)     "FIXED CONVERSION PRICE" means (A) during
                  the period beginning on the initial Issuance Date of the
                  Preferred Shares and ending on the Additional Closing Date,
                  $1.50 and (B) on and after the Additional Closing Date (as


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                  defined in the Securities Purchase Agreement, an amount equal
                  to the sum of the Market Price on the Measurement Date and the
                  Spread Adjustment, subject to adjustment as provided herein;

                           (iii)    "FLOATING CONVERSION PRICE" means, as of any
                  date of determination, the lower of (A) the amount obtained by
                  multiplying the Conversion Percentage in effect as of such
                  date by the Market Price for the Common Stock and (B) the
                  Closing Bid Price on the Conversion Date (as defined in
                  Section 2(g)(i) below),each subject to adjustment as provided
                  herein;

                           (iv)     "CONVERSION PERCENTAGE" means 85%, subject
                  to adjustment as provided herein;

                           (v)      "MARKET PRICE" means, with respect to any
                  security for any date of determination, the price which shall
                  be computed as the arithmetic average of the Closing Sale
                  Price of the Common Stock for the 5 consecutive trading days
                  immediately preceding such date;

                           (vi)     "MEASUREMENT DATE" means the business day 
                  after the date of the meeting of the Company's stockholders
                  approving the proposals contained in Section 4(j) of the
                  Securities Purchase Agreement between the Company and the
                  initial holders of the Preferred Shares (the "SECURITIES
                  PURCHASE AGREEMENT");

                           (vii)    "CLOSING SALE PRICE" means, for any security
                  as of any date, the last closing trade price for such security
                  on the Principal Market (as defined below) as reported by
                  Bloomberg, or, if the Principal Market is not the principal
                  securities exchange or trading market for such security, the
                  last closing trade price of such security on the principal
                  securities exchange or trading market where such security is
                  listed or traded as reported by Bloomberg, or if the foregoing
                  do not apply, the last closing trade price of such security in
                  the over-the-counter market on the electronic bulletin board
                  for such security as reported by Bloomberg, or, if no last
                  closing trade price is reported for such security by
                  Bloomberg, the last closing bid price of such security as
                  reported by Bloomberg, or, if no last closing bid price is
                  reported for such security by Bloomberg, the average of the
                  bid prices of any market makers for such security as reported
                  in the "pink sheets" by the National Quotation Bureau, Inc. If
                  the Closing Sale Price cannot be calculated for such security
                  on such date on any of the foregoing bases, the Closing Sale
                  Price of such security on such date shall be the fair market
                  value as mutually determined by the Company and the holders of
                  a majority of the shares of Series F Preferred Stock. If the
                  Company and the holders of Preferred Shares are unable to
                  agree upon the fair market value of the Common Stock, then
                  such dispute shall be resolved pursuant to Section 2(f)(iii)
                  with the term "Closing Sale Price" being substituted for the
                  term "Market Price." (All such determinations to be
                  appropriately adjusted for any stock dividend, stock, split or
                  other similar transaction during such period);


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                           (viii)   "CLOSING BID PRICE" means, for any security 
                  as of any date, the last closing bid price for such security
                  on the Principal Market as reported by Bloomberg, or, if the
                  Principal Market is not the principal securities exchange or
                  trading market for such security, the last closing bid price
                  of such security on the principal securities exchange or
                  trading market where such security is listed or traded as
                  reported by Bloomberg, or if the foregoing do not apply, the
                  last closing bid price of such security in the
                  over-the-counter market on the electronic bulletin board for
                  such security as reported by Bloomberg, or, if no closing bid
                  price is reported for such security by Bloomberg, the last
                  closing trade price of such security as reported by Bloomberg,
                  or, if no last closing trade price is reported for such
                  security by Bloomberg, the average of the bid prices of any
                  market makers for such security as reported in the "pink
                  sheets" by the National Quotation Bureau, Inc. If the Closing
                  Bid Price cannot be calculated for such security on such date
                  on any of the foregoing bases, the Closing Bid Price of such
                  security on such date shall be the fair market value as
                  mutually determined by the Company and the holders of a
                  majority of the shares of Series F Preferred Stock. If the
                  Company and the holders of Preferred Shares are unable to
                  agree upon the fair market value of the Common Stock, then
                  such dispute shall be resolved pursuant to Section 2(f)(iii)
                  with the term "Closing Bid Price" being substituted for the
                  term "Market Price." (All such determinations to be
                  appropriately adjusted for any stock dividend, stock, split or
                  other similar transaction during such period);

                           (ix)     "N" means the number of days from, but
                  excluding, the Issuance Date through and including the
                  Conversion Date for the Preferred Shares for which conversion
                  is being elected;

                           (x)      "ISSUANCE DATE" means, with respect to each
                  Preferred Share, the date of issuance of the applicable
                  Preferred Share;

                           (xi)     "SEC" means the Securities and Exchange 
                  Commission;

                           (xii)    "REGISTRATION RIGHTS AGREEMENT" means that
                  certain Registration Rights Agreement among the Company and
                  the initial purchasers of the Preferred Shares;

                           (xiii)   "REGISTRATION STATEMENT" means a 
                  Registration Statement (as defined in the Registration Rights
                  Agreement);

                           (xiv)    "RESERVE NUMBER" means the number of shares 
                  of Common Stock reserved for issuance upon the conversion of
                  the Preferred Shares as set by the Company on the Measurement
                  Date, provided, however, that such Reserve Number shall not be
                  less than 200% of the sum of (A) the number of 


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                  Conversion Shares issuable on the Measurement Date upon the
                  conversion of all of the outstanding Initial Preferred Shares
                  and the Additional Preferred Shares to be issued by the
                  Company and (B) the number of Conversion Shares held by Buyers
                  on the Measurement Date;

                           (xv)     "SPREAD ADJUSTMENT" means the Market Price 
                  on the Measurement Date minus the Base Price;

                           (xvi)    "BASE PRICE" means the aggregate purchase 
                  price for the Initial Preferred Shares and the Additional
                  Preferred Shares pursuant to the Securities Purchase Agreement
                  divided by the Reserve Number; and

                           (xvii)   "PRINCIPAL MARKET" means the Nasdaq National
                  Market, The New York Stock Exchange, Inc. or The American
                  Stock Exchange, Inc.

                  (c)      INTENTIONALLY OMITTED.

                  (d)      ADJUSTMENT TO CONVERSION PRICE - DILUTION AND OTHER
         EVENTS. In order to prevent dilution of the rights granted under this
         Certificate of Designations, the Conversion Price will be subject to
         adjustment from time to time as provided in this Section 2(d).

                           (i)      ADJUSTMENT OF FIXED CONVERSION PRICE UPON
                  ISSUANCE OF COMMON STOCK. If and whenever on or after the date
                  of issuance of the Preferred Shares, the Company issues or
                  sells, or is deemed to have issued or sold, any shares of
                  Common Stock (other than shares of Common Stock deemed to have
                  been issued by the Company in connection with Approved
                  Issuances (as defined below)) for a consideration per share
                  less than the Market Price in effect immediately prior to such
                  time (the "APPLICABLE PRICE"), then immediately after such
                  issue or sale, the Fixed Conversion Price shall be reduced to
                  an amount equal to the product of (x) the Fixed Conversion
                  Price in effect immediately prior to such issue or sale and
                  (y) the quotient determined by dividing (1) the sum of (I) the
                  product of the Applicable Price and the number of shares of
                  Common Stock Deemed Outstanding (as defined below) immediately
                  prior to such issue or sale, and (II) the consideration, if
                  any, received by the Company upon such issue or sale, by (2)
                  the product of (I) the Applicable Price and (II) the number of
                  shares of Common Stock Deemed Outstanding immediately after
                  such issue or sale. For purposes of determining the adjusted
                  Fixed Conversion Price under this Section 2(d)(i), the
                  following shall be applicable:

                                    (A)      ISSUANCE OF OPTIONS. If the
                           Company in any manner grants any rights or options to
                           subscribe for or to purchase Common Stock (other than
                           in connection with an Approved Issuance or upon
                           conversion of the Preferred Shares) or any stock or
                           other securities convertible into or exchangeable for
                           Common Stock (such rights or 



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                           options being herein called "OPTIONS" and such
                           convertible or exchangeable stock or securities being
                           herein called "CONVERTIBLE SECURITIES") and the price
                           per share for which Common Stock is issuable upon the
                           exercise of such Options or upon conversion or
                           exchange of such Convertible Securities is less than
                           the Applicable Price, then the total maximum number
                           of shares of Common Stock issuable upon the exercise
                           of such Options or upon conversion or exchange of the
                           total maximum amount of such Convertible Securities
                           issuable upon the exercise of such Options shall be
                           deemed to be outstanding and to have been issued and
                           sold by the Company for such price per share. For
                           purposes of this Section 2(d)(i)(A), the "price per
                           share for which Common Stock is issuable upon
                           exercise of such Options or upon conversion or
                           exchange of such Convertible Securities" is
                           determined by dividing (I) the total amount, if any,
                           received or receivable by the Company as
                           consideration for the granting of such Options, plus
                           the minimum aggregate amount of additional
                           consideration payable to the Company upon the
                           exercise of all such Options, plus in the case of
                           such Options which relate to Convertible Securities,
                           the minimum aggregate amount of additional
                           consideration, if any, payable to the Company upon
                           the issuance or sale of such Convertible Securities
                           and the conversion or exchange thereof, by (II) the
                           total maximum number of shares of Common Stock
                           issuable upon exercise of such Options or upon the
                           conversion or exchange of all such Convertible
                           Securities issuable upon the exercise of such
                           Options. No adjustment of the Fixed Conversion Price
                           shall be made upon the actual issuance of such Common
                           Stock or of such Convertible Securities upon the
                           exercise of such Options or upon the actual issuance
                           of such Common Stock upon conversion or exchange of
                           such Convertible Securities.

                                    (B)      ISSUANCE OF CONVERTIBLE SECURITIES.
                           If the Company in any manner issues or sells any
                           Convertible Securities and the price per share for
                           which Common Stock is issuable upon such conversion
                           or exchange is less than the Applicable Price, then
                           the maximum number of shares of Common Stock issuable
                           upon conversion or exchange of such Convertible
                           Securities shall be deemed to be outstanding and to
                           have been issued and sold by the Company for such
                           price per share. For the purposes of this Section
                           2(d)(i)(B), the "price per share for which Common
                           Stock is issuable upon such conversion or exchange"
                           is determined by dividing (I) the total amount
                           received or receivable by the Company as
                           consideration for the issue or sale of such
                           Convertible Securities, plus the minimum aggregate
                           amount of additional consideration, if any, payable
                           to the Company upon the conversion or exchange
                           thereof, by (II) the total maximum number of shares
                           of 



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                           Common Stock issuable upon the conversion or exchange
                           of all such Convertible Securities. No adjustment of
                           the Fixed Conversion Price shall be made upon the
                           actual issue of such Common Stock upon conversion or
                           exchange of such Convertible Securities, and if any
                           such issue or sale of such Convertible Securities is
                           made upon exercise of any Options for which
                           adjustment of the Fixed Conversion Price had been or
                           are to be made pursuant to other provisions of this
                           Section 2(d)(i), no further adjustment of the Fixed
                           Conversion Price shall be made by reason of such
                           issue or sale.

                                    (C)      CHANGE IN OPTION PRICE OR RATE OF 
                           CONVERSION. If the purchase price provided for in any
                           Options, the additional consideration, if any,
                           payable upon the issue, conversion or exchange of any
                           Convertible Securities, or the rate at which any
                           Convertible Securities are convertible into or
                           exchangeable for Common Stock change at any time, the
                           Fixed Conversion Price in effect at the time of such
                           change shall be readjusted to the Fixed Conversion
                           Price which would have been in effect at such time
                           had such Options or Convertible Securities still
                           outstanding provided for such changed purchase price,
                           additional consideration or changed conversion rate,
                           as the case may be, at the time initially granted,
                           issued or sold; provided that no adjustment shall be
                           made if such adjustment would result in an increase
                           of the Fixed Conversion Price then in effect.

                                    (D)      CERTAIN DEFINITIONS. For purposes
                           of determining the adjusted Fixed Conversion Price
                           under this Section 2(d)(i), the following terms have
                           meanings set forth below:

                                            (I)       "APPROVED ISSUANCES" shall
                                    mean (i) the issuance of Common Stock in a
                                    firm commitment, underwritten public
                                    offering with commissions, underwriting
                                    discounts and allowances not in excess of
                                    7.0% of the gross proceeds, (ii) the
                                    issuance of securities upon exercise or
                                    conversion of the Company's options,
                                    warrants or other convertible securities
                                    outstanding as of the date hereof or (iii)
                                    the grant of additional options or warrants,
                                    or the issuance of additional securities,
                                    under any Company stock option plan,
                                    restricted stock plan, stock purchase plan
                                    or other plan or written compensation
                                    contract for the benefit of the Company's
                                    employees or directors.

                                            (II)      "COMMON STOCK DEEMED
                                    OUTSTANDING" means, at any given time, the
                                    number of shares of Common Stock actually
                                    outstanding at such time, plus the number of
                                    shares of Common Stock deemed to be
                                    outstanding pursuant to Sections 2(d)(i)(A)
                                    and 2(d)(i)(B) hereof regardless of whether
                                    the Options or Convertible Securities are
                                    actually exercisable at such time, but

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                                    excluding any shares of Common Stock
                                    issuable upon conversion of the Preferred
                                    Shares.

                                    (E)      TREATMENT OF EXPIRED OPTIONS AND 
                           UNEXERCISED CONVERTIBLE SECURITIES. If, in any case,
                           the total number of shares of Common Stock issuable
                           upon the exercise of any Option or upon exercise,
                           conversion or exchange of any Convertible Security is
                           not, in fact, issued and the rights to exercise such
                           Option or to exercise, convert or exchange such
                           Convertible Securities shall have expired or
                           terminated, the Fixed Conversion Price then in effect
                           will be readjusted to the Fixed Conversion Price
                           which would have been effect at the time of such
                           expiration or termination had such Option or
                           Convertible Securities, to the extent outstanding
                           immediately prior to such expiration or termination
                           (other than in respect of the actual number of shares
                           of Common Stock issued upon exercise or conversion
                           thereof), never been issued.

                                    (F)      EFFECT ON FIXED CONVERSION PRICE OF
                           CERTAIN EVENTS. For purposes of determining the
                           adjusted Fixed Conversion Price under this Section
                           2(d)(i), the following shall be applicable:

                                             (I)      CALCULATION OF 
                                    CONSIDERATION RECEIVED. If any Common Stock,
                                    Options or Convertible Securities are issued
                                    or sold or deemed to have been issued or
                                    sold for cash, the consideration received
                                    therefor will be deemed to be the amount
                                    received by the Company therefor, before
                                    deduction of reasonable commissions,
                                    underwriting discounts or allowances or
                                    other reasonable expenses paid or incurred
                                    by the Company in connection with such
                                    issuance or sale. In case any Common Stock,
                                    Options or Convertible Securities are issued
                                    or sold for a consideration other than cash,
                                    the amount of the consideration other than
                                    cash received by the Company will be the
                                    fair value of such consideration, except
                                    where such consideration consists of
                                    securities, in which case the amount of
                                    consideration received by the Company will
                                    be the Market Price of such security on the
                                    date of receipt. In case any Common Stock,
                                    Options or Convertible Securities are issued
                                    to the owners of the non-surviving entity in
                                    connection with any merger in which the
                                    Company is the surviving entity the amount
                                    of consideration therefor will be deemed to
                                    be the fair value of such portion of the net
                                    assets and business of the non-surviving
                                    entity as is attributable to such Common
                                    Stock, Options or Convertible Securities, as
                                    the case may be. The fair value of any


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                                    consideration other than cash or securities
                                    will be determined jointly by the Company
                                    and the holders of a majority of the
                                    Preferred Shares then outstanding. If such
                                    parties are unable to reach agreement within
                                    ten (10) days after the occurrence of an
                                    event requiring valuation (the "VALUATION
                                    EVENT"), the fair value of such
                                    consideration will be determined within
                                    forty-eight (48) hours of the tenth (10th)
                                    day following the Valuation Event by an
                                    independent, reputable appraiser selected by
                                    the Company. The determination of such
                                    appraiser shall be deemed binding upon all
                                    parties absent manifest error.

                                            (II)      INTEGRATED TRANSACTIONS.
                                    In case any Option is issued in connection
                                    with the issue or sale of other securities
                                    of the Company, together comprising one
                                    integrated transaction in which no specific
                                    consideration is allocated to such Options
                                    by the parties thereto, the Options will be
                                    deemed to have been issued for a
                                    consideration of $.01.

                                            (III)     TREASURY SHARES. The
                                    number of shares of Common Stock outstanding
                                    at any given time does not include shares
                                    owned or held by or for the account of the
                                    Company, and the disposition of any shares
                                    so owned or held will be considered an issue
                                    or sale of Common Stock.

                                            (IV)      RECORD DATE. If the
                                    Company takes a record of the holders of
                                    Common Stock for the purpose of entitling
                                    them (1) to receive a dividend or other
                                    distribution payable in Common Stock,
                                    Options or in Convertible Securities or (2)
                                    to subscribe for or purchase Common Stock,
                                    Options or Convertible Securities, then such
                                    record date will be deemed to be the date of
                                    the issue or sale of the shares of Common
                                    Stock deemed to have been issued or sold
                                    upon the declaration of such dividend or the
                                    making of such other distribution or the
                                    date of the granting of such right of
                                    subscription or purchase, as the case may
                                    be.

                           (ii)     ADJUSTMENT OF FIXED CONVERSION PRICE UPON
                  SUBDIVISION OR COMBINATION OF COMMON STOCK. If the Company at
                  any time subdivides (by any stock split, stock dividend,
                  recapitalization or otherwise) one or more classes of its
                  outstanding shares of Common Stock into a greater number of
                  shares, the Fixed Conversion Price in effect immediately prior
                  to such subdivision will be proportionately reduced. If the
                  Company at any time combines (by combination, reverse stock
                  split or otherwise) one or more classes of its outstanding
                  shares of Common Stock into a smaller number of shares, the
                  Fixed Conversion Price in effect immediately prior to such
                  combination will be proportionately increased.


   11

                           (iii)    ADJUSTMENT OF FLOATING CONVERSION PRICE UPON
                  ISSUANCE OF CONVERTIBLE SECURITIES. If the Company in any
                  manner issues or sells Convertible Securities that are
                  convertible into Common Stock at a price which varies with the
                  market price of the Common Stock (the formulation for such
                  variable price being herein referred to as, the "VARIABLE
                  PRICE") and such Variable Price is not calculated using the
                  same formula used to calculate the Floating Conversion Price
                  in effect immediately prior to the time of such issue or sale,
                  the Company shall provide written notice thereof via facsimile
                  and overnight courier to each holder of the Preferred Shares
                  ("VARIABLE NOTICE") on the date of issuance of such
                  Convertible Securities. If the holders of Preferred Shares
                  representing at least two-thirds (2/3) of the Preferred Shares
                  then outstanding provide written notice via facsimile and
                  overnight courier (the "VARIABLE PRICE ELECTION NOTICE") to
                  the Company within five (5) business days of receiving a
                  Variable Notice that such holders desire to replace the
                  Floating Conversion Price then in effect with the Variable
                  Price described in such Variable Notice, the Company shall
                  prepare and deliver to each holder of the Preferred Shares via
                  facsimile and overnight courier a copy of an amendment to this
                  Certificate of Designations (the "VARIABLE PRICE AMENDMENT")
                  that substitutes the Variable Price for the Floating
                  Conversion Price (together with such modifications to this
                  Certificate of Designations as may be required to give full
                  effect to the substitution of the Variable Price for the
                  Floating Conversion Price) within five (5) business days after
                  receipt of the requisite number of Variable Price Election
                  Notices set forth above. The Company shall file such Variable
                  Price Amendment with the Secretary of State of The
                  Commonwealth of Massachusetts within five (5) business days
                  after delivery of the Variable Price Amendment to the holders
                  of the Preferred Shares; provided that in the event that the
                  Company receives a notice prior to the filing of the Variable
                  Price Amendment from any holder who has delivered a Variable
                  Price Election Notice in connection with such Variable Price
                  Amendment that such holder objects to the form of the Variable
                  Price Amendment, the Company shall not file such Variable
                  Price Amendment until such time as the Variable Price
                  Amendment has been revised to the reasonable satisfaction of
                  such holder and approved in writing by the holders of the
                  Preferred Shares representing at least two-thirds (2/3) of the
                  Preferred Shares then outstanding. Except as provided in the
                  preceding proviso, a holder's delivery of a Variable Price
                  Election Notice shall serve as the consent required to amend
                  this Certificate of Designation pursuant to Section 12 below.

                           (iv)     REORGANIZATION, RECLASSIFICATION,
                  CONSOLIDATION, MERGER OR SALE. Any recapitalization,
                  reorganization, reclassification, consolidation, merger, sale
                  of all or substantially all of the Company's assets to another
                  Person (as defined below) or other transaction which is
                  effected in such a way that holders of Common Stock are
                  entitled to receive (either directly or upon subsequent

   12

                  liquidation) stock, securities or assets with respect to or in
                  exchange for Common Stock is referred to herein as "ORGANIC
                  CHANGE." Prior to the consummation of any Organic Change, the
                  Company will make appropriate provision (in form and substance
                  reasonably satisfactory to the holders of a majority of the
                  Preferred Shares then outstanding) to insure that each of the
                  holders of the Preferred Shares will thereafter have the right
                  to acquire and receive in lieu of or in addition to (as the
                  case may be) the shares of Common Stock otherwise acquirable
                  and receivable upon the conversion of such holder's Preferred
                  Shares, such shares of stock, securities or assets that would
                  have been issued or payable in such Organic Change with
                  respect to or in exchange for the number of shares of Common
                  Stock which would have been acquirable and receivable upon the
                  conversion of such holder's Preferred Shares had such Organic
                  Change not taken place (without taking into account any
                  limitations or restrictions on the timing or amount of
                  conversions). In any such case, the Company will make
                  appropriate provision (in form and substance reasonably
                  satisfactory to the holders of a majority of the Preferred
                  Shares then outstanding) with respect to such holders' rights
                  and interests to insure that the provisions of this Section
                  2(d) and Section 2(e) will thereafter be applicable to the
                  Preferred Shares (including, in the case of any such
                  consolidation, merger or sale in which the successor entity or
                  purchasing entity is other than the Company, an immediate
                  adjustment of the Fixed Conversion Price to the value for the
                  Common Stock reflected by the terms of such consolidation,
                  merger or sale, if the value so reflected is less than the
                  Fixed Conversion Price in effect immediately prior to such
                  consolidation, merger or sale and an immediate revision to the
                  Floating Conversion Price to reflect the price of the common
                  stock of the surviving entity and the market in which such
                  common stock is traded). The Company will not effect any such
                  consolidation, merger or sale, unless prior to the
                  consummation thereof, the successor entity (if other than the
                  Company) resulting from consolidation or merger or the entity
                  purchasing such assets assumes, by written instrument (in form
                  and substance reasonably satisfactory to the holders of a
                  majority of the Preferred Shares then outstanding), the
                  obligation to deliver to each holder of Preferred Shares such
                  shares of stock, securities or assets as, in accordance with
                  the foregoing provisions, such holder may be entitled to
                  acquire. "PERSON" shall mean an individual, a limited
                  liability company, a partnership, a joint venture, a
                  corporation, a trust, an unincorporated organization and a
                  government or any department or agency thereof.

                           (v)      CERTAIN EVENTS.  If any event occurs of the
                  type contemplated by the provisions of this Section 2(d) but
                  not expressly provided for by such provisions (including,
                  without limitation, the granting of stock appreciation rights,
                  phantom stock rights or other rights with equity features),
                  then the Company's Board of Directors will make an appropriate
                  adjustment in the Conversion Price so as to protect the rights
                  of the holders of the Preferred Shares; provided that no such
                  adjustment will increase the Conversion Price as otherwise
                  determined pursuant to this Section 2(d).


   13

                           (vi)     NOTICES.

                                    (A) Immediately upon any adjustment of the
                           Conversion Price as provided in Section 2(d)(i), the
                           Company will give written notice thereof to each
                           holder of the Preferred Shares, setting forth in
                           reasonable detail and certifying the calculation of
                           such adjustment.

                                    (B) The Company will give written notice to
                           each holder of the Preferred Shares at least twenty
                           (20) days prior to the date on which the Company
                           closes its books or takes a record (I) with respect
                           to any dividend or distribution upon the Common
                           Stock, (II) with respect to any pro rata subscription
                           offer to holders of Common Stock or (III) for
                           determining rights to vote with respect to any
                           Organic Change, dissolution or liquidation and in no
                           event shall such notice be provided to such holder
                           prior to such information being made known to the
                           public.

                                    (C) The Company will also give written
                           notice to each holder of Preferred Shares at least
                           twenty (20) days prior to the date on which any
                           Organic Change, dissolution or liquidation will take
                           place and in no event shall such notice be provided
                           to such holder prior to such information being made
                           known to the public.

                           (e)      PURCHASE RIGHTS. In addition to any
                  adjustments of the Conversion Price pursuant to Section 2(d),
                  if at any time after the Issuance Date the Company grants,
                  issues or sells any Options, Convertible Securities or rights
                  to purchase stock, warrants, securities or other property pro
                  rata to the record holders of any class of Common Stock (the
                  "PURCHASE RIGHTS"), then the holders of the Preferred Shares
                  will be entitled to acquire, upon the terms applicable to such
                  Purchase Rights, the aggregate Purchase Rights which such
                  holder could have acquired if such holder had held the number
                  of shares of Common Stock acquirable upon complete conversion
                  of the Preferred Shares (without taking into account any
                  limitations or restrictions on the timing or amount of
                  conversions) immediately before the date on which a record is
                  taken for the grant, issuance or sale of such Purchase Rights,
                  or, if no such record is taken, the date as of which the
                  record holders of the Common Stock are to be determined for
                  the grant, issue or sale of such Purchase Rights.

                           (f)      FIXING OF CONVERSION PRICE - MAJOR CORPORATE
                  EVENT ANNOUNCEMENT. Notwithstanding anything contained in
                  Section 2(b) above, in the event (i) the Company makes a
                  public announcement that it intends to consolidate or merge
                  with or into another Person or engage in a business
                  combination involving the issuance or exchange of 40% or more
                  of the 


   14

                  Company's outstanding Common Stock (ii) the Company makes a
                  public announcement that it intends to sell or transfer
                  substantially all of the Company's assets, or (iii) any
                  person, group or entity (including the Company) publicly
                  announces a purchase, tender or exchange offer for 50% or more
                  of the Company's outstanding Common Stock (the transactions
                  described in clauses (i), (ii) and (iii) above are hereinafter
                  referred to as "MAJOR CORPORATE EVENTS" and the date of the
                  announcement referred to in clause (i), (ii) or (iii) is
                  hereinafter referred to as the "ANNOUNCEMENT DATE"), then the
                  Fixed Conversion Price shall, effective upon the Announcement
                  Date and continuing through the Adjusted Conversion Price
                  Termination Date (as defined below), be equal to the
                  Conversion Price which would have been applicable for a
                  conversion by the holder pursuant to Section 2(a) occurring on
                  the Announcement Date. From and after the Adjusted Conversion
                  Price Termination Date, the Conversion Price shall be
                  determined as set forth in Section 2(a). For purposes hereof,
                  "ADJUSTED CONVERSION PRICE TERMINATION DATE" shall mean, with
                  respect to any proposed Major Corporate Event for which a
                  public announcement as contemplated by this Section 2(f) has
                  been made, the date upon which the Company or the person,
                  group or entity (in the case of clause (iii) above) publicly
                  announces the consummation, termination or abandonment of the
                  proposed Major Corporate Event which was the subject of the
                  previous public announcement.

                           (g)      MECHANICS OF CONVERSION.

                                    (i)      HOLDER'S DELIVERY REQUIREMENTS.  To
                           convert Preferred Shares into full shares of Common
                           Stock on any date (the "CONVERSION DATE"), the holder
                           thereof shall (A) transmit by facsimile (or otherwise
                           deliver), for receipt on or prior to 11:59 p.m.,
                           Eastern Time on such date, a copy of a fully executed
                           notice of conversion in the form attached hereto as
                           EXHIBIT I (the "CONVERSION NOTICE"), to the Company
                           or its designated transfer agent (the "TRANSFER
                           AGENT") and (B) surrender to a common carrier for
                           delivery to the Company, as soon as practicable
                           following such date, the original certificate(s)
                           representing the Preferred Shares being converted (or
                           an indemnification undertaking reasonably
                           satisfactory to the Company with respect to such
                           shares in the case of their loss, theft or
                           destruction) (the "PREFERRED STOCK CERTIFICATE(S)").

                                    (ii)     COMPANY'S RESPONSE. Upon receipt by
                           the Company of a facsimile copy of a Conversion
                           Notice, the Company shall as soon as practicable, but
                           in any event no later than the next business day,
                           send, via facsimile, a confirmation of receipt of
                           such Conversion Notice to such holder. Upon receipt
                           by the Company of the Preferred Stock Certificate(s)
                           to be converted pursuant to a Conversion Notice, the
                           Company shall, on the next business day following the
                           date of receipt, (I) issue and surrender to a common
                           carrier for overnight delivery to the address
                           specified in the Conversion Notice, a certificate,
                           registered in the 



   15

                           name of the holder or its designee, for the number of
                           shares of Common Stock to which the holder shall be
                           entitled, or (II) credit such aggregate number of
                           shares of Common Stock to which the holder shall be
                           entitled to the holder's or its designee's balance
                           account with The Depository Trust Company. If the
                           number of Preferred Shares represented by the
                           Preferred Stock Certificate(s) submitted for
                           conversion is greater than the number of Preferred
                           Shares being converted, then the Company or Transfer
                           Agent, as the case may be, shall, as soon as
                           practicable and in no event later than two business
                           days after receipt of the Preferred Stock
                           Certificate(s) and at its own expense, issue and
                           deliver to the holder a new Preferred Stock
                           Certificate representing the number of Preferred
                           Shares not converted.

                                    (iii)    DISPUTE RESOLUTION. In the case of 
                           a dispute as to the determination of the Market Price
                           or the arithmetic calculation of the Conversion Rate,
                           the Company shall promptly issue to the holder the
                           number of shares of Common Stock that is not disputed
                           and shall submit the disputed determinations or
                           arithmetic calculations to the holder via facsimile
                           within one business day of receipt of such holder's
                           Conversion Notice. If such holder and the Company are
                           unable to agree upon the determination of the Market
                           Price or arithmetic calculation of the Conversion
                           Rate within one (1) business day of such disputed
                           determination or arithmetic calculation being
                           submitted to the holder, then the Company shall
                           within one (1) business day submit via facsimile (A)
                           the disputed determination of the Market Price to an
                           independent, reputable investment bank or (B) the
                           disputed arithmetic calculation of the Conversion
                           Rate to its independent, outside accountant. The
                           Company shall cause the investment bank or the
                           accountant, as the case may be, to perform the
                           determinations or calculations and notify the Company
                           and the holder of the results no later than
                           forty-eight (48) hours from the time it receives the
                           disputed determinations or calculations. Such
                           investment bank's or accountant's determination or
                           calculation, as the case may be, shall be binding
                           upon all parties absent manifest error.

                                    (iv)     RECORD HOLDER. The person or
                           persons entitled to receive the shares of Common
                           Stock issuable upon a conversion of Preferred Shares
                           shall be treated for all purposes as the record
                           holder or holders of such shares of Common Stock on
                           the Conversion Date.

                                    (v)      COMPANY'S FAILURE TO TIMELY 
                           CONVERT. If within five (5) business days after the
                           Company's or the Transfer Agent's receipt of the
                           Preferred Stock Certificates to be converted the
                           Company shall fail (I) to issue a certificate for the
                           number of shares of Common Stock to which a holder is
                           entitled or to credit the holder's balance account
                           with The Depository Trust Company for such number of
                           shares of Common Stock to which the holder is
                           entitled upon such holder's conversion of 


   16

                           Preferred Shares or (II) to issue a new Preferred
                           Stock Certificate representing the number of
                           Preferred Shares to which such holder is entitled
                           pursuant to Section 2(f)(ii), in addition to all
                           other available remedies which such holder may pursue
                           hereunder and under the Securities Purchase Agreement
                           (including indemnification pursuant to Section 6
                           thereof), the Company shall pay additional damages to
                           such holder on each date after the fifth business day
                           that such conversion or delivery of such Preferred
                           Stock Certificates, as the case may be, is not timely
                           effected in an amount equal to 0.5% of the product of
                           (A) the sum of the number of shares of Common Stock
                           not issued to the holder on a timely basis pursuant
                           to Section 2(f)(ii) and to which such holder is
                           entitled and, in the event the Company has failed to
                           deliver a Preferred Stock Certificate to the holder
                           on a timely basis pursuant to Section 2(f)(ii), the
                           number of shares of Common Stock issuable upon
                           conversion of the Preferred Shares represented by
                           such Preferred Stock Certificate, as of the last
                           possible date which the Company could have issued
                           such Preferred Stock Certificate to such holder
                           without violating Section 2(f)(ii) and (B) the
                           Closing Sale Price of the Common Stock on the last
                           possible date which the Company could have issued
                           such Common Stock and the Preferred Stock
                           Certificate, as the case may be, to such holder
                           without violating Section 2(f)(ii). In addition to
                           the foregoing, if for any reason a holder has not
                           received all of the shares of Common Stock prior to
                           the tenth (10th) business day after the expiration of
                           the share delivery period with respect to a
                           conversion of Preferred Shares, then the Fixed
                           Conversion Price in respect of any Preferred Shares
                           held by such holder (including Preferred Shares
                           submitted for conversion, but for which shares of
                           Common Stock have not been issued to such holder)
                           shall thereafter be the lesser of (i) the Fixed
                           Conversion Price on the Conversion Date specified in
                           the Conversion Notice which resulted in the
                           Conversion Failure and (ii) the lowest Conversion
                           Price in effect during the period beginning on, and
                           including, such Conversion Date through and including
                           the day such shares of Common Stock are delivered to
                           the holder. The Fixed Conversion Price shall
                           thereafter be subject to further adjustment for any
                           other events described in this Section 2. If the
                           Company fails to pay the additional damages set forth
                           in this Section 2(g)(v) within five (5) business days
                           of the date incurred, then the holder entitled to
                           such payments shall have the right at any time, so
                           long as the Company continues to fail to make such
                           payments, to require the Company upon written notice,
                           to immediately issue, in lieu of the cash additions
                           damages set forth in this Section 2(g)(v), the number
                           of shares of Common Stock equal to the quotient of
                           (X) the aggregate amount of the additional damages
                           payments described above divided by (Y) the
                           Conversion Price in effect on such Conversion Date 



   17

                           as is specified by the holder in writing to the
                           Company

                           (h)      MANDATORY CONVERSION AT MATURITY. If any 
                  Preferred Shares remain outstanding on the Maturity Date (as
                  defined below), then all such Preferred Shares shall be
                  converted as of such date in accordance with this Section 2 as
                  if the holders of such Preferred Shares had given the
                  Conversion Notice on the Maturity Date; provided, however,
                  that if a Triggering Event (other than a Triggering Event
                  resulting from the Section 3(d)(vi) due to the Company's
                  breach of a representation) has occurred and is continuing on
                  the Maturity Date, then the Company shall, within five
                  business days following the Maturity Date (unless otherwise
                  notified in writing by the holder of its request to have the
                  Preferred Shares converted into Common Stock), pay to each
                  holder of Preferred Shares then outstanding, in immediately
                  available funds, an amount equal to the Triggering Event
                  Redemption Price as of the Maturity Date. All holders of
                  Preferred Shares shall thereupon surrender all Preferred Stock
                  Certificates, duly endorsed for cancellation, to the Company
                  or the Transfer Agent, provided that the Company has complied
                  with its obligations under this Section 2(g). Notwithstanding
                  the foregoing, if the Common Stock is not designated for
                  quotation or listed on the Principal Market but such event
                  does not constitute Triggering Event, then the Mandatory
                  Conversion Date shall be extended until the Common Stock is so
                  designated or listed. "MATURITY DATE" means the date which is
                  four years after the applicable Issuance Date for the
                  Preferred Shares.

                           (i)      FRACTIONAL SHARES. The Company shall not 
                  issue any fraction of a share of Common Stock upon any
                  conversion. All shares of Common Stock (including fractions
                  thereof) issuable upon conversion of more than one Preferred
                  Share by a holder thereof shall be aggregated for purposes of
                  determining whether the conversion would result in the
                  issuance of a fraction of a share of Common Stock. If, after
                  the aforementioned aggregation, the issuance would result in
                  the issuance of a fraction of a share of Common Stock, the
                  Company shall round such fraction of a share of Common Stock
                  up or down to the nearest whole share.

                           (j)      TAXES. The Company shall pay any and all 
                  taxes that may be payable with respect to the issuance and
                  delivery of Common Stock upon the conversion of Preferred
                  Shares.

         (3)      REDEMPTION AT OPTION OF HOLDERS.

                  (a)      REDEMPTION OPTION UPON MAJOR TRANSACTION. In addition
         to all other rights of the holders of Preferred Shares contained
         herein, simultaneous with or after the occurrence of a Major
         Transaction (as defined below), each holder of Preferred 



   18

         Shares shall have the right, at such holder's option, to require the
         Company to redeem all or a portion of such holder's Preferred Shares at
         a price per Preferred Share equal to the greater of (i) 130% of the
         Liquidation Value (as defined in Section 8) and (ii) the product of (A)
         the Conversion Rate on the date the Notice of Redemption at Option of
         Buyer Upon Major Transaction is given and (B) the Closing Sale Price on
         the date of the public announcement of such Major Transaction or the
         next date on which the exchange or market on which the Common Stock is
         traded is open if such public announcement is made (X) after 12:00
         p.m., Central Time, time on such date or (Y) on a date on which the
         exchange or market on which the Common Stock is traded is closed
         ("MAJOR TRANSACTION REDEMPTION PRICE").

                  (b)      REDEMPTION OPTION UPON TRIGGERING EVENT. In addition 
         to all other rights of the holders of Preferred Shares contained
         herein, simultaneous with or after the occurrence of a Triggering Event
         (as defined below), each holder of Preferred Shares shall have the
         right, at such holder's option, to require the Company to redeem all or
         a portion of such holder's Preferred Shares at a price per Preferred
         Share equal to the greater of (i) 130% of the Liquidation Value and
         (ii) the product of (A) the Conversion Rate on the date of such
         holder's delivery of a Notice of Redemption at Option of Holder Upon
         Triggering Event (as defined below) and (B) the greater of (I) the
         Closing Sale Price on the trading day immediately preceding such
         Triggering Event or (II) the Closing Sale Price on the date of the
         holder's delivery to the Company of a Notice of Redemption at Option of
         Holder Upon Triggering Event (as defined below) or, if such date of
         delivery is not a trading day, the next date on which the exchange or
         market on which the Common Stock is traded is open ("TRIGGERING EVENT
         REDEMPTION PRICE" and, collectively with "MAJOR TRANSACTION REDEMPTION
         PRICE," the "REDEMPTION PRICE").

                  (c)      "MAJOR TRANSACTION". A "MAJOR TRANSACTION" shall be 
         deemed to have occurred at such time as any of the following events:

                           (i)      the consolidation, merger or other business
                  combination of the Company with or into another Person (other
                  than pursuant to a migratory merger effected solely for the
                  purpose of changing the jurisdiction of incorporation of the
                  Company);

                           (ii)     the sale or transfer of all or substantially
                  all of the Company's assets; or

                           (iii)    a purchase, tender or exchange offer made to
                  and accepted by the holders of more than 40% of the
                  outstanding shares of Common Stock.

                  (d)      "TRIGGERING EVENT". A "TRIGGERING EVENT" shall be 
         deemed to have occurred at such time as any of the following events:


   19

                           (i)      the failure of the Registration Statement to
                  be declared effective by the SEC on or prior to the date that
                  is 120 days after the Issuance Date to which such Registration
                  Statement is related;

                           (ii)     while the Registration Statement is required
                  to be maintained effective pursuant to the terms of the
                  Registration Rights Agreement, the effectiveness of the
                  Registration Statement lapses for any reason (including,
                  without limitation, the issuance of a stop order) or is
                  unavailable to the holder of the Preferred Shares for sale of
                  the Registrable Securities (as defined in the Registration
                  Rights Agreement) in accordance with the terms of the
                  Registration Rights Agreement, and such lapse or
                  unavailability continues for a period of at least ten
                  consecutive days or for an aggregate of at least twenty days
                  in any 180 day period;

                           (iii)    the suspension from trading or quotation or
                  failure of the Common Stock to be listed or quoted on the
                  Principal Market for a period of five consecutive days or for
                  an aggregate of at least ten days in any 365 day period;


   20



                           (iv)     the Company's notice to any holder of
                  Preferred Shares, including by way of public announcement, at
                  any time, of its intention not to comply with requests for
                  conversion of any Preferred Shares into shares of Common
                  Stock, including due to any of the reasons set forth in
                  Section 4(a), or the Company's failure to deliver Conversion
                  Shares within ten days of the Conversion Date;

                           (v)      upon the Company's receipt of a Conversion
                  Notice, the Company shall not be obligated to issue the
                  Conversion Shares due to the provisions of Section 11;

                           (vi)     any representation or warranty by the 
                  Company was not true and correct at the time made (including
                  the Issuance Date) or the Company breaches any covenant or
                  other term or condition of the Securities Purchase Agreement,
                  the Registration Rights Agreement, this Certificate of
                  Designations, the Irrevocable Transfer Agent Instructions (as
                  defined in the Securities Purchase Agreement), or any other
                  agreement, document, certificate or other instrument delivered
                  in connection with the transactions contemplated thereby or
                  hereby, except (i) to the extent that such breach would not
                  have a Material Adverse Effect (as defined in Section 3(a) of
                  the Securities Purchase Agreement) or would materially impair
                  the value of the Preferred Shares (it being agreed and
                  acknowledged that the breach of the covenant contained in
                  Section 4(f) of the Purchase Agreement will be deemed to
                  materially impair the value of the Preferred Shares), and (ii)
                  in the case of a breach of a covenant which is curable, such
                  breach continues for a period of less than ten days; or

                           (vii)    the Company's shareholders fail to approve
                  the proposals contemplated by Section 4(j) of the Securities
                  Purchase Agreement on or before the earlier of the first
                  meeting of the Company's shareholders after the initial
                  Issuance Date and 120 days after the initial Issuance Date.

                  (e)      MECHANICS OF REDEMPTION AT OPTION OF HOLDER UPON 
         MAJOR TRANSACTION. No sooner than fifteen days nor later than ten days
         prior to the consummation of a Major Transaction, but not prior to the
         public announcement of such Major Transaction, the Company shall
         deliver written notice thereof via facsimile and overnight courier (a
         "NOTICE OF MAJOR TRANSACTION") to each holder of Preferred Shares. At
         any time after receipt of a Notice of Major Transaction (or, in the
         event a Notice of Major Transaction is not delivered at least ten days
         prior to a Major Transaction, at any time on or after the date which is
         ten days prior to a Major Transaction), any holder of the Preferred
         Shares then outstanding may require the Company to redeem all or a
         portion of the holder's Preferred Shares, which redemption shall be
         effective concurrent with the consummation of the Major Transaction,
         then outstanding by delivering written notice thereof via facsimile and
         overnight courier (a 


   21
         "NOTICE OF REDEMPTION AT OPTION OF HOLDER UPON MAJOR TRANSACTION") to
         the Company, which Notice of Redemption at Option of Holder Upon Major
         Transaction shall indicate (i) the number of Preferred Shares that such
         holder is submitting for redemption and (ii) the applicable Major
         Transaction Redemption Price, as calculated pursuant to Section 3(a).

                  (f)      MECHANICS OF REDEMPTION AT OPTION OF HOLDER UPON
         TRIGGERING EVENT. Within one business day after the occurrence of a
         Triggering Event, the Company shall deliver written notice thereof via
         facsimile and overnight courier (a "NOTICE OF TRIGGERING EVENT") to
         each holder of Preferred Shares. At any time after the earlier of a
         holder's receipt of a Notice of Triggering Event and such holder
         becoming aware of a Triggering Event, any holder of the Preferred
         Shares then outstanding may require the Company to redeem all or a
         portion of the holder's Preferred Shares then outstanding by delivering
         written notice thereof via facsimile and overnight courier (a "NOTICE
         OF REDEMPTION AT OPTION OF HOLDER UPON TRIGGERING EVENT") to the
         Company, which Notice of Redemption at Option of Holder Upon Triggering
         Event shall indicate (i) the number of Preferred Shares that such
         holder is submitting for redemption and (ii) the applicable Triggering
         Event Redemption Price, as calculated pursuant to Section 3(b).

                  (g)      PAYMENT OF REDEMPTION PRICE. Upon the Company's
         receipt of a Notice(s) of Redemption at Option of Holder Upon
         Triggering Event or a Notice(s) of Redemption at Option of Holder Upon
         Major Transaction from any holder of Preferred Shares, the Company
         shall immediately notify each holder of Preferred Shares by facsimile
         of the Company's receipt of such Notice(s) of Redemption at Option of
         Holder Upon Triggering Event or Notice(s) of Redemption at Option of
         Holder Upon Major Transaction and each holder which has sent such a
         notice shall promptly submit to the Company or its Transfer Agent such
         holder's Preferred Stock Certificates which such holder has elected to
         have redeemed. The Company shall deliver the applicable Triggering
         Event Redemption Price, in the case of a redemption pursuant to Section
         3(f), to such holder within five business days after the Company's
         receipt of a Notice of Redemption at Option of Holder Upon Triggering
         Event and, in the case of a redemption pursuant to Section 3(e), the
         Company shall deliver the applicable Major Transaction Redemption Price
         concurrent with the consummation of the Major Transaction; provided
         that a holder's Preferred Stock Certificates shall have been so
         delivered to the Company; and provided further that if the Company is
         unable to redeem all of the Preferred Shares to be redeemed, the
         Company shall redeem an amount from each holder of Preferred Shares
         being redeemed equal to such holder's pro rata amount (based on the
         number of Preferred Shares held by such holder relative to the number
         of Preferred Shares outstanding) of all Preferred Shares being
         redeemed. If the Company shall fail to redeem all of the Preferred
         Shares submitted for redemption in addition to any remedy such holder
         of Preferred Shares may have under this Certificate of Designations,
         the Securities Purchase Agreement and the Registration Rights
         Agreement, the applicable Redemption Price payable in respect of such

   22

         unredeemed Preferred Shares shall bear interest at the rate of 2.5% per
         month (prorated for partial months) until paid in full. Until the
         Company pays such unpaid applicable Redemption Price in full to a
         holder of Preferred Shares submitted for redemption, such holder shall
         have the option (the "VOID OPTIONAL REDEMPTION OPTION") to, in lieu of
         redemption, require the Company to promptly return to such holder(s)
         all of the Preferred Shares that were submitted for redemption by such
         holder(s) under this Section 3 and for which the applicable Redemption
         Price has not been paid, by sending written notice thereof to the
         Company via facsimile (the "VOID OPTIONAL REDEMPTION NOTICE"). Upon the
         Company's receipt of such Void Optional Redemption Notice(s) and prior
         to payment of the full applicable Redemption Price to such holder, (i)
         the Notice(s) of Redemption at Option of Holder Upon Triggering Event
         or the Notice(s) of Redemption at Option of Holder Upon Major
         Transaction, as the case may be, shall be null and void with respect to
         those Preferred Shares submitted for redemption and for which the
         applicable Redemption Price has not been paid, (ii) the Company shall
         immediately return any Preferred Shares submitted to the Company by
         each holder for redemption under this Section 3(g) and for which the
         applicable Redemption Price has not been paid, (iii) the Fixed
         Conversion Price of such returned Preferred Shares shall be adjusted to
         the lesser of (A) the Fixed Conversion Price in effect on the date on
         which the Void Optional Redemption Notice(s) is delivered to the
         Company and (B) the lowest Closing Bid Price during the period
         beginning on the date on which the Notice(s) of Redemption of Option of
         Buyer Upon a Major Transaction or the Notice(s) of Redemption at Option
         of Buyer Upon Triggering Event, as the case may be, is delivered to the
         Company and ending on the date which the Void Optional Redemption
         Notice is delivered to the Company; provided that no adjustment shall
         be made if such adjustment would result in an increase of the Fixed
         Conversion Price then in effect, (iv) the Conversion Percentage in
         effect at such time shall be reduced by a number of percentage points
         equal to the product of (A).50 and (B) the number of days in the period
         beginning on the date which is the last date on which the Triggering
         Event Redemption Price or Major Transaction Redemption Price, as the
         case may be, is required to be delivered in accordance with the
         foregoing provisions of this Section 3(g) and ending on the date on
         which the Void Optional Redemption Notice(s) is delivered to the
         Company and (v) if the redemption was caused by a Triggering Event
         involving the Company's inability to issue Conversion Shares because of
         the Exchange Cap (as defined in Section 11), the holders of at least
         two-thirds of the Preferred Shares then outstanding, including
         Preferred Shares submitted for redemption pursuant to this Section 3
         with respect to which the applicable Redemption Price has not been
         paid, may direct the Company to immediately delist the Common Stock
         from the exchange or automated quotation system on which the Common
         Stock is traded and have the Common Stock, at such holders' option,
         traded in the electronic bulletin board or the "pink sheets."
         Notwithstanding the foregoing, in the event of a dispute as to the
         determination of the Closing Sale Price or the arithmetic calculation
         of the Redemption Price, such dispute shall be resolved pursuant to
         Section 2(f)(iii) above with the term "Closing Sale Price" being
         substituted for the term "Market Price" and the term "Redemption Price"
         being substituted for the term "Conversion Rate". A holder's delivery
         of a Void Optional Redemption Notice and exercise of its rights
         following such notice shall not effect the Company's obligations to
         make any payments which have 


   23

         accrued prior to the date of such notice. Payments provided for in this
         Section 3 shall have priority to payments to other stockholders in
         connection with a Major Transaction.

         (4)      INABILITY TO FULLY CONVERT.

                  (a)      HOLDER'S OPTION IF COMPANY CANNOT FULLY CONVERT.  If,
         upon the Company's receipt of a Conversion Notice or on the Maturity
         Date, the Company cannot issue shares of Common Stock registered for
         resale under the Registration Statement (or which are exempt from the
         registration requirements under the 1933 Act pursuant to Rule 144(k)
         under the 1933 Act) for any reason, including, without limitation,
         because the Company (x) does not have a sufficient number of shares of
         Common Stock authorized and available, (y) is otherwise prohibited by
         applicable law or by the rules or regulations of any stock exchange,
         interdealer quotation system or other self-regulatory organization with
         jurisdiction over the Company or its Securities, including without
         limitation the Exchange Cap (as defined below), from issuing all of the
         Common Stock which is to be issued to a holder of Preferred Shares
         pursuant to a Conversion Notice or (z) fails to have a sufficient
         number of shares of Common Stock registered for resale under the
         Registration Statement, then the Company shall issue as many shares of
         Common Stock as it is able to issue in accordance with such holder's
         Conversion Notice and pursuant to Section 2(f) and, with respect to the
         unconverted Preferred Shares, the holder, solely at such holder's
         option, can elect to:

                           (i)      require the Company to redeem from such
                  holder those Preferred Shares for which the Company is unable
                  to issue Common Stock in accordance with such holder's
                  Conversion Notice ("MANDATORY REDEMPTION") at a price per
                  Preferred Share (the "MANDATORY REDEMPTION PRICE") equal to
                  the Triggering Event Redemption Price as of such Conversion
                  Date;

                           (ii)     if the Company's inability to fully convert
                  Preferred Shares is pursuant to Section 4(a)(z), require the
                  Company to issue restricted shares of Common Stock in
                  accordance with such holder's Conversion Notice and pursuant
                  to Section 2(f);

                           (iii)    void its Conversion Notice and retain or
                  have returned, as the case may be, the nonconverted Preferred
                  Shares that were to be converted pursuant to such holder's
                  Conversion Notice (provided that a holder's voiding its
                  Conversion Notice shall not effect the Company's obligations
                  to make any payments which have accrued prior to the date of
                  such notice); or

                           (iv)     if the Company's inability to fully convert
                  Preferred Shares is pursuant to Section 4(a)(y), require the
                  Company to issue shares of Common Stock in accordance with
                  such holder's Conversion Notice and pursuant to Section 2(f)
                  at a Conversion Price equal to the average of the Closing Sale
                  Prices of the Common Stock on the five consecutive trading
                  days immediately 


   24


         preceding such holder's Notice in Response to Inability to Convert (as
         defined below).

                  (b)      MECHANICS OF FULFILLING HOLDER'S ELECTION. The
         Company shall immediately send via facsimile to a holder of Preferred
         Shares, upon receipt of a facsimile copy of a Conversion Notice from
         such holder which cannot be fully satisfied as described in Section
         4(a), a notice of the Company's inability to fully satisfy such
         holder's Conversion Notice (the "INABILITY TO FULLY CONVERT NOTICE").
         Such Inability to Fully Convert Notice shall indicate (i) the reason
         why the Company is unable to fully satisfy such holder's Conversion
         Notice, (ii) the number of Preferred Shares which cannot be converted
         and (iii) the applicable Mandatory Redemption Price. Such holder shall
         notify the Company of its election pursuant to Section 4(a) above by
         delivering written notice via facsimile to the Company ("NOTICE IN
         RESPONSE TO INABILITY TO CONVERT").

                  (c)      PAYMENT OF MANDATORY REDEMPTION PRICE. If such holder
         shall elect to have its shares redeemed pursuant to Section 4(a)(i),
         the Company shall pay the Mandatory Redemption Price in cash to such
         holder within five (5) days of the Company's receipt of the holder's
         Notice in Response to Inability to Convert. If the Company shall fail
         to pay the applicable Mandatory Redemption Price to such holder on a
         timely basis as described in this Section 4(c) (other than pursuant to
         a dispute as to the determination of the arithmetic calculation of the
         Redemption Price), in addition to any remedy such holder of Preferred
         Shares may have under this Certificate of Designations, the Securities
         Purchase Agreement and the Registration Rights Agreement, such unpaid
         amount shall bear interest at the rate of 2.5% per month (prorated for
         partial months) until paid in full. Until the full Mandatory Redemption
         Price is paid in full to such holder, such holder may void the
         Mandatory Redemption with respect to those Preferred Shares for which
         the full Mandatory Redemption Price has not been paid and (i) receive
         back such Preferred Shares and (ii) the Fixed Conversion Price of such
         returned Preferred Shares shall be adjusted to the lesser of (A) the
         Fixed Conversion Price as in effect on the date on which the holder
         voided the Mandatory Redemption and (B) the lowest Closing Bid Price
         during the period beginning on the Conversion Date and ending on the
         date the holder voided the Mandatory Redemption. Notwithstanding the
         foregoing, if the Company fails to pay the applicable Mandatory
         Redemption Price within such five (5) days time period due to a dispute
         as to the determination of the Mandatory Redemption Price, such dispute
         shall be resolved pursuant to Section 2(f)(iii) with the term
         "MANDATORY REDEMPTION PRICE" being substituted for the term "Conversion
         Rate".

                  (d)      PRO-RATA CONVERSION AND REDEMPTION. In the event the
         Company receives a Conversion Notice, Notice of Redemption at Option of
         Holder Upon Major Transaction or Notice of Redemption at Option of
         Holder Upon Triggering Event from more than one holder of Preferred
         Shares on the same day and the Company can convert and/or redeem some,
         but not all, of the Preferred Shares pursuant to this Section 4, the
         Company shall convert and/or redeem from each holder of Preferred
         Shares electing to have Preferred Shares converted and redeemed at such
         time an 




   25

         amount equal to such holder's pro-rata amount (based on the number of
         Preferred Shares held by such holder relative to the number of
         Preferred Shares outstanding) of all Preferred Shares being converted
         and redeemed at such time.

         (5)      REISSUANCE OF CERTIFICATES. In the event of a conversion or
redemption pursuant to this Certificate of Designations of less than all of the
Preferred Shares represented by a particular Preferred Stock Certificate, the
Company shall promptly cause to be issued and delivered to the holder of such
Preferred Shares a preferred stock certificate representing the remaining
Preferred Shares which have not been so converted or redeemed.

         (6)      RESERVATION OF SHARES. The Company shall, so long as any of
the Preferred Shares are outstanding, reserve and keep available out of its
authorized and unissued Common Stock, solely for the purpose of effecting the
conversion of the Preferred Shares, such number of shares of Common Stock as
shall from time to time be sufficient to effect the conversion of all of the
Preferred Shares then outstanding (without regard to any limitations on
conversions); provided that the number of shares of Common Stock so reserved
shall at no time be less than 200% of the number of shares of Common Stock for
which the Preferred Shares are at any time convertible. The initial number of
shares of Common Stock reserved for conversions of the Preferred Shares and each
increase in the number of shares so reserved shall be allocated pro rata among
the holders of the Preferred Shares based on the number of Preferred Shares held
by each holder at the time of issuance of the Preferred Shares or increase in
the number of reserved shares, as the case may be. In the event a holder shall
sell or otherwise transfer any of such holder's Preferred Shares, each
transferee shall be allocated a pro rata portion of the number of reserved
shares of Common Stock reserved for such transferor. Any shares of Common Stock
reserved and which remain allocated to any person or entity which does not hold
any Preferred Shares shall be allocated to the remaining holders of Preferred
Shares, pro rata based on the number of Preferred Shares then held by such
holder.

         (7)      VOTING RIGHTS. Holders of Preferred Shares shall have no
voting rights, except as required by law, including but not limited to the MBCL,
and as expressly provided in this Certificate of Designations.

         (8)      LIQUIDATION, DISSOLUTION, WINDING-UP. In the event of any
voluntary or involuntary liquidation, dissolution or winding up of the Company,
the holders of the Preferred Shares shall be entitled to receive in cash out of
the assets of the Company, whether from capital or from earnings available for
distribution to its stockholders (the "PREFERRED FUNDS"), before any amount
shall be paid to the holders of any of the capital stock of the Company of any
class junior in rank to the Preferred Shares in respect of the preferences as to
the distributions and payments on the liquidation, dissolution and winding up of
the Company, an amount per Preferred Share equal to the sum of (i) $1,000 and
(ii) an amount equal to the product of (.06) (N/365) ($1,000) (such sum being
referred to as the "LIQUIDATION VALUE"); provided that, if the Preferred Funds
are insufficient to pay the full amount due to the holders of Preferred Shares
and holders of shares of other classes or series of preferred stock of the
Company that are of equal rank with the Preferred Shares as to payments of
Preferred Funds (the "PARI PASSU SHARES"), then each holder of Preferred Shares
and Pari Passu Shares shall receive a percentage of the Preferred Funds equal to
the full amount of Preferred Funds 


   26

payable to such holder as a liquidation preference, in accordance with their
respective Certificate of Designations, as a percentage of the full amount of
Preferred Funds payable to all holders of Preferred Shares and Pari Passu
Shares. The purchase or redemption by the Company of stock of any class, in any
manner permitted by law, shall not, for the purposes hereof, be regarded as a
liquidation, dissolution or winding up of the Company. Neither the consolidation
or merger of the Company with or into any other Person, nor the sale or transfer
by the Company of less than substantially all of its assets, shall, for the
purposes hereof, be deemed to be a liquidation, dissolution or winding up of the
Company. No holder of Preferred Shares shall be entitled to receive any amounts
with respect thereto upon any liquidation, dissolution or winding up of the
Company other than the amounts provided for herein; provided that a holder of
Preferred Shares shall be entitled to all amounts previously accrued with
respect to amounts owed hereunder.

         (9)      PREFERRED RANK; PARTICIPATION.

                  (a)      All shares of Common Stock shall be of junior rank to
         all Preferred Shares in respect to the preferences as to distributions
         and payments upon the liquidation, dissolution and winding up of the
         Company. The rights of the shares of Common Stock shall be subject to
         the preferences and relative rights of the Preferred Shares. Without
         the prior express written consent of the holders of not less than
         two-thirds (2/3) of the then outstanding Preferred Shares, the Company
         shall not hereafter authorize or issue additional or other capital
         stock that is of senior or equal rank to the Preferred Shares in
         respect of the preferences as to distributions and payments upon the
         liquidation, dissolution and winding up of the Company. Without the
         prior express written consent of the holders of not less than
         two-thirds (2/3) of the then outstanding Preferred Shares, the Company
         shall not hereafter authorize or make any amendment to the Company's
         Restated Articles of Organization or bylaws, or file any resolution of
         the board of directors of the Company with the Secretary of State of
         The Commonwealth of Massachusetts containing any provisions, which
         would adversely affect or otherwise impair the rights or relative
         priority of the holders of the Preferred Shares relative to the holders
         of the Common Stock or the holders of any other class of capital stock.
         In the event of the merger or consolidation of the Company with or into
         another corporation, the Preferred Shares shall maintain their relative
         powers, designations and preferences provided for herein and no merger
         shall result inconsistent therewith.

                  (b)      Subject to the rights of the holders, if any, of the
         Pari Passu Shares, the holders of the Preferred Shares shall, as
         holders of Preferred Stock, be entitled to such dividends paid and
         distributions made to the holders of Common Stock to the same extent as
         if such holders of Preferred Shares had converted the Preferred Shares
         into Common Stock (without regard to any limitations on conversion
         herein or elsewhere) and had held such shares of Common Stock on the
         record date for such dividends and distributions. Payments under the
         preceding sentence shall be made concurrently with 


   27

         the dividend or distribution to the holders of Common Stock.

         (10)     RESTRICTION ON REDEMPTION AND CASH DIVIDENDS WITH RESPECT TO
OTHER CAPITAL STOCK. Until all of the Preferred Shares have been converted or
redeemed as provided herein, the Company shall not, directly or indirectly,
redeem, or declare or pay any cash dividend or distribution on, its Common Stock
without the prior express written consent of the holders of not less than
two-thirds (2/3) of the then outstanding Preferred Shares.

         (11)     LIMITATION ON NUMBER OF CONVERSION SHARES. Notwithstanding any
other provision herein, the Company shall not be obligated to issue any shares
of Common Stock upon conversion of the Preferred Shares if the issuance of such
shares of Common Stock would exceed 4,094,894 (the "EXCHANGE CAP") without
breaching the Company's obligations under the rules or regulations, of the
Principal Market requiring the approval of the Company's stockholders for the
issuance of a certain number of shares of Common Stock, except that such
limitation shall not apply in the event that the Company (i) obtains the
approval of its stockholders as required by applicable rules and regulations, of
the Principal Market for issuances of Common Stock in excess of the Exchange Cap
or (ii) obtains a written opinion from outside counsel to the Company that such
approval is not required, which opinion shall be reasonably satisfactory to the
holders of a majority of the Preferred Shares then outstanding. To the extent
that the above limitation is applicable to the Company, until such approval or
written opinion is obtained, no purchaser of Preferred Shares pursuant to the
Securities Purchase Agreement (the "PURCHASERS") shall be issued, upon
conversion of Preferred Shares, shares of Common Stock in an amount greater than
the product of (x) the Exchange Cap amount multiplied by (y) a fraction, the
numerator of which is the number of Preferred Shares issued to such Purchaser
pursuant to the Securities Purchase Agreement and the denominator of which is
the aggregate amount of all the Preferred Shares issued to the Purchasers
pursuant to the Securities Purchase Agreement (the "CAP ALLOCATION AMOUNT"). In
the event that any Purchaser shall sell or otherwise transfer any of such
Purchaser's Preferred Shares, the transferee shall be allocated a pro rata
portion of such Purchaser's Cap Allocation Amount. In the event that any holder
of Preferred Shares shall convert all of such holder's Preferred Shares into a
number of shares of Common Stock which, in the aggregate, is less than such
holder's Cap Allocation Amount, then the difference between such holder's Cap
Allocation Amount and the number of shares of Common Stock actually issued to
such holder shall be allocated to the respective Cap Allocation Amounts of the
remaining holders of Preferred Shares on a pro rata basis in proportion to the
number of Preferred Shares then held by each such holder.

         (12)     VOTE TO CHANGE THE TERMS OF OR ISSUE PREFERRED SHARES. The
affirmative vote at a meeting duly called for such purpose or the written
consent without a meeting, of the holders of not less than two-thirds (2/3) of
the then outstanding Preferred Shares, shall be required for (a) any change to
this Certificate of Designations or the Company's Restated Articles of
Organization which would amend, alter, change or repeal any of the powers,
designations, preferences and rights of the Preferred Shares, or (b) any
issuance of Preferred Shares other than pursuant to the Securities Purchase
Agreement.

         (13)     LOST OR STOLEN CERTIFICATES. Upon receipt by the Company of
evidence satisfactory to the Company of the loss, theft, destruction or
mutilation of any Preferred Stock Certificates representing the Preferred
Shares, and, in the case of loss, theft or destruction, of 


   28

an indemnification undertaking by the holder to the Company and, in the case of
mutilation, upon surrender and cancellation of the Preferred Stock
Certificate(s), the Company shall execute and deliver new preferred stock
certificate(s) of like tenor and date; provided, however, the Company shall not
be obligated to re-issue preferred stock certificates if the holder
contemporaneously requests the Company to convert such Preferred Shares into
Common Stock.

         (14)     REMEDIES, CHARACTERIZATIONS, OTHER OBLIGATIONS, BREACHES AND
INJUNCTIVE RELIEF. The remedies provided in this Certificate of Designations
shall be cumulative and in addition to all other remedies available under this
Certificate of Designations, at law or in equity (including a decree of specific
performance and/or other injunctive relief), no remedy contained herein shall be
deemed a waiver of compliance with the provisions giving rise to such remedy and
nothing herein shall limit a holder's right to pursue actual damages for any
failure by the Company to comply with the terms of this Certificate of
Designations. The Company covenants to each holder of Preferred Shares that
there shall be no characterization concerning this instrument other than as
expressly provided herein. Amounts set forth or provided for herein with respect
to payments, conversion and the like (and the computation thereof) shall be the
amounts to be received by the holder thereof and shall not, except as expressly
provided herein, be subject to any other obligation of the Company (or the
performance thereof). The Company acknowledges that a breach by it of its
obligations hereunder will cause irreparable harm to the holders of the
Preferred Shares and that the remedy at law for any such breach may be
inadequate. The Company therefore agrees that, in the event of any such breach
or threatened breach, the holders of the Preferred Shares shall be entitled, in
addition to all other available remedies, to an injunction restraining any
breach, without the necessity of showing economic loss and without any bond or
other security being required.

         (15)     SPECIFIC SHALL NOT LIMIT GENERAL; CONSTRUCTION. No specific
provision contained in this Certificate of Designations shall limit or modify
any more general provision contained herein. This Certificate of Designations
shall be deemed to be jointly drafted by the Company and the initial holders of
the Preferred Shares and shall not be construed against any person as the
drafter hereof.

         (16)     FAILURE OR INDULGENCE NOT WAIVER. No failure or delay on the
part of a holder of Preferred Shares in the exercise of any power, right or
privilege hereunder shall operate as a waiver thereof (except to the extent that
such power, right or privilege must, in accordance with the terms of this
Certificate of Designations, be exercised within a specified period of time and
such period of time has lapsed without such power, right or privilege being
exercised), nor shall any single or partial exercise of any such power, right or
privilege preclude other or further exercise thereof or of any other right,
power or privilege.

         (17)     NOTICES. Any notice required to be delivered pursuant to the
terms of this Certificate of Designations shall be delivered, unless otherwise
provided in these Certificate of Designations, in accordance with the terms, and
subject to the notice provisions of, the Securities Purchase Agreement.



   29


                           ALPHA-BETA TECHNOLOGY, INC.
                                CONVERSION NOTICE

         Reference is made to the Certificate of Designations, Preferences and
Rights, of the Series F Convertible Preferred Stock of Alpha-Beta Technology,
Inc. (the "CERTIFICATE OF DESIGNATIONS"). In accordance with and pursuant to the
Certificate of Designations, the undersigned hereby elects to convert the number
of shares of Series F Convertible Preferred Stock, par value $0.01 per share
(the "PREFERRED SHARES"), of Alpha-Beta Technology, Inc., a Massachusetts
corporation (the "COMPANY"), indicated below into shares of Common Stock, par
value $0.01 per share (the "COMMON STOCK"), of the Company, by tendering the
stock certificate(s) representing the Preferred Shares specified below as of the
date specified below.

         Date of Conversion: ___________________________________________________

         Number of Preferred Shares to be converted: ___________________________

         Stock certificate no(s). of Preferred Shares to be converted: _________

Please confirm the following information:

         Conversion Price: _____________________________________________________

         Number of shares of Common Stock

         to be issued: _________________________________________________________

Please issue the Common Stock into which the Preferred Shares are being
converted and, if applicable, any check drawn on an account of the Company in
the following name and to the following address:

         Issue to:         _____________________________________________________

                           _____________________________________________________

                           _____________________________________________________

         Facsimile Number: _____________________________________________________

         Authorization:    _____________________________________________________

                           By: _________________________________________________


   30

                           Title: ______________________________________________

         Dated:            _____________________________________________________
         Account Number:
          (if electronic book entry transfer): _________________________________

         Transaction Code Number
          (if electronic book entry transfer): _________________________________



   31












SIGNED UNDER THE PENALTIES OF PERJURY, this 21st day of October, 1998
                                            ----        -------    --

/s/ Spiros Jamas                                          *President
- --------------------------------------------------------, 
Spiros Jamas


/s/ Davidson Easson, Jr.                                  *Clerk
- --------------------------------------------------------,
D. Davidson Easson, Jr.

*Delete the inapplicable words.

   32




                       THE COMMONWEALTH OF MASSACHUSETTS

                        CERTIFICATE OF VOTE OF DIRECTORS
                   ESTABLISHING A SERIES OF A CLASS OF STOCK
                    (GENERAL LAWS, CHAPTER 156B, SECTION 26)


         =============================================================


         I hereby approve the within Certificate of Vote of Directors
         and, the filing fee in the amount of $_______________ having
         been paid, said certificate is deemed to have been filed with
         me this __________ day of ____________________, 19__.



         Effective date:______________________________________________




                             WILLIAM FRANCIS GALVIN
                         Secretary of the Commonwealth







                         TO BE FILED IN BY CORPORATION
                      PHOTOCOPY OF DOCUMENT TO BE SENT TO:

                Robert E. Bishop, Esq.
         -------------------------------------------------------------

                Goodwin, Procter & Hoar LLP
         -------------------------------------------------------------

                Exchange Place, Boston, Massachusetts 02109
         -------------------------------------------------------------

         Telephone:  (617) 570-1000
                    --------------------------------------------------