Document:

EXHIBIT 4.1

                          CERTIFICATE OF DESIGNATION

                                      OF

                  SERIES 2002-G CONVERTIBLE PREFERRED STOCK

                                      OF

                       UNIVIEW TECHNOLOGIES CORPORATION
                          _________________________

                       Pursuant to Article 2.13 of the
                        Texas Business Corporation Act
                          _________________________

      1.   Designation, Amount, Par Value, Liquidation  Value and Rank.   The
 series of  preferred  stock shall  be  designated as  Convertible  Preferred
 Stock, Series  2002-G  ("Preferred Stock"),  and  the number  of  shares  so
 designated shall be 240 (which shall not be subject to increase without  the
 consent of each of  the Holders of the  Preferred Stock ("Holders")).   Each
 share  of  Preferred  Stock,  $1.00  par  value  per  share,  shall  have  a
 liquidation value of $25,000 per share (the "Liquidation Value").

           The Preferred  Stock shall  rank senior  to all  other classes  of
 equity securities of  the Company as  to dividends,  distributions or  other
 payments upon liquidation, dissolution  or winding up.   No class of  equity
 securities of  the Company  shall be  senior to  the Preferred  Stock as  to
 dividends, distributions or other payments upon liquidation, dissolution  or
 winding up.

      2.   Dividends.

      (a)  Holders of  Preferred  Stock  shall  be  entitled  to  receive  no
 dividends on the Preferred Stock. (b)   So long as any Preferred Stock shall
 remain outstanding or unconverted, except pursuant to existing agreements of
 the Company  on the  date hereof,  neither the  Company nor  any  subsidiary
 thereof shall redeem, purchase or  otherwise acquire directly or  indirectly
 any Junior Securities, nor shall the  Company directly or indirectly pay  or
 declare any dividend  or make  any distribution  (other than  a dividend  or
 distribution described herein) upon, nor shall  any distribution be made  in
 respect of, any Junior Securities, nor shall any monies be set aside for  or
 applied to the purchase or redemption (through a sinking fund or  otherwise)
 of any Junior Securities.

      3.   Voting Rights.    Except  as  otherwise  provided  herein  and  as
 otherwise required by law, the Preferred Stock shall have no voting  rights.
 However, so  long as  any shares  of Preferred  Stock are  outstanding,  the
 Company shall  not and  shall cause  its subsidiaries  not to,  without  the
 affirmative vote of the Holders of a majority of the shares of the Preferred
 Stock then  outstanding,  (a) alter  or  change adversely  the  absolute  or
 relative powers, preferences  or rights given  to the  Preferred Stock,  (b)
 alter or amend this Certificate of Designation, (c) authorize or create  any
 class of stock  ranking as  to dividends or  distribution of  assets upon  a
 Liquidation or  otherwise senior  to the  Preferred  Stock, except  for  any
 series of Preferred Stock  issued and sold in  accordance with the  Purchase
 Agreement, (d)  amend  its Certificate  of  Incorporation, bylaws  or  other
 charter documents so as to affect  adversely any rights of any Holders,  (e)
 increase the authorized  number of shares  of Preferred Stock  or (f)  enter
 into any agreement with respect to the foregoing.

      4.   Liquidation.  Upon any  liquidation, dissolution or winding-up  of
 the Company, whether voluntary or involuntary (a "Liquidation"), the Holders
 shall be entitled to receive out of the assets of the Company, whether  such
 assets are capital or surplus, for  each share of Preferred Stock an  amount
 equal to the Liquidation Value before  any distribution or payment shall  be
 made to the Holders of any Junior Securities.  If the assets of the  Company
 shall be insufficient to pay  in full all amounts  due to the Holders,  then
 the entire assets to be  distributed to the Holders  and the Holders of  all
 securities ranking pari passu to the  Preferred Stock ratably in  accordance
 with the respective  amounts that  would be payable  on such  shares if  all
 amounts payable  thereon were  paid in  full.   A sale,  conveyance,  lease,
 transfer or disposition  of all or  substantially all of  the assets of  the
 Company or the  consummation by the  Company of a  transaction or series  of
 related transactions  in which  more than  50% of  the voting  power of  the
 Company is disposed of, or a consolidation or merger of the Company with  or
 into any other company or companies  shall not be treated as a  Liquidation,
 but instead shall be subject to the  provisions of Sections 7 and 8  hereof.
 The Company shall mail written notice of any such Liquidation, not less than
 45 days prior to the payment date stated therein, to each Holder.

      5.   Mechanics of Conversion.

           (a)  Holder's Delivery Requirements.  Subject to the provisions of
 Section 5(e), each share of Preferred Stock shall be convertible into shares
 of Common Stock at the  Conversion Ratio (as defined  in Section 11) at  the
 option of the  Holder in whole  or in part  at any time  after the  Original
 Issue Date.   The Holders shall  effect conversions by  surrendering to  the
 Company, during usual business hours of the Company's office, a copy of  the
 form of  conversion notice  attached hereto  as Exhibit  A (the  "Conversion
 Notice"), accompanied, if  required pursuant to  this Section  5(a), by  the
 certificate or certificates representing the shares of Preferred Stock to be
 converted.  Each Conversion Notice shall  specify the Holder, the number  of
 shares of  Preferred  Stock to  be  converted and  the  date on  which  such
 conversion is to be effected, which  date may not be  prior to the date  the
 Holder delivers such Conversion Notice by facsimile (the "Conversion Date").
 If no Conversion Date  is specified in a  Conversion Notice, the  Conversion
 Date shall  be the  date  that the  Conversion  Notice is  deemed  delivered
 pursuant to Section  12.  Subject  to Section 5(b)  hereof, each  Conversion
 Notice, once given,  shall be  irrevocable.   Upon conversion  of shares  of
 Preferred Stock in accordance with the terms hereof, the Holder shall not be
 required to physically surrender its certificate  of Preferred Stock to  the
 Company unless  the  entire  amount  of shares  of  Preferred  Stock  is  so
 converted.  The Holder  and the Company shall  maintain records showing  the
 number of  shares  of  Preferred  Stock converted  and  the  dates  of  such
 conversions or shall use such other  method, reasonably satisfactory to  the
 Holder and  the Company,  so as  not to  require physical  surrender of  the
 Preferred Stock certificate(s) upon each such  conversion.  In the event  of
 any dispute or discrepancy, such records of the Company shall be controlling
 and determinative in  the absence of  manifest error.   Notwithstanding  the
 foregoing, if any  portion of  shares of  a Preferred  Stock certificate  is
 converted, the  Holder  may not  transfer  the Preferred  Stock  certificate
 unless the  Holder  first  physically  surrenders  the  certificate  to  the
 Company, whereupon the  Company shall promptly  issue and  deliver upon  the
 order of  the Holder  a new  certificate of  like tenor,  registered as  the
 Holder (upon payment  by the Holder  of any applicable  transfer taxes)  may
 request,  representing  the  number  of  remaining  unconverted  shares   of
 Preferred  Stock.  The  Holder  and  any  assignee,  by  acceptance  of  the
 Preferred Stock, acknowledge and agree that, by reason of the provisions  of
 this paragraph,  following conversion  of a  portion  of a  Preferred  Stock
 certificate, the  unpaid  and unconverted  shares  of such  Preferred  Stock
 certificate may be less than the amount stated on the face thereof.   Shares
 of Preferred Stock converted into Common Stock shall be cancelled and  shall
 have the status of authorized but unissued shares of undesignated stock.

           (b)  Company's Response. Not later than two (2) Trading Days after
 any Conversion Date, the  Company will cause to  be delivered to the  Holder
 (i) a certificate or certificates which shall be free of restrictive legends
 and trading restrictions (other than those required by Section 3.l(b) of the
 Purchase Agreement) representing the number of shares of Common Stock  being
 acquired upon the conversion of shares  of Preferred Stock, and (ii) one  or
 more certificates representing the number of  shares of Preferred Stock  not
 converted (if required).   Upon request of the  Holder, in lieu of  physical
 delivery of the shares of Preferred  Stock, provided the Company's  transfer
 agent  is  participating  in  The  Depository  Trust  Company  ("DTC")  Fast
 Automated Securities Transfer ("FAST") program,  upon request of the  Holder
 and in compliance with the provisions hereof, the Company shall use its best
 efforts  to  cause  its  transfer  agent  to  electronically  transmit   any
 certificate or certificates  required to be  delivered to  the Holder  under
 this Section 5 by  crediting the account of  the Holder's Prime Broker  with
 DTC through its Deposit Withdrawal Agent Commission system.  The time period
 for delivery described  herein shall  apply to  the electronic  transmittals
 described herein.  If in the case of any Conversion Notice such  certificate
 or certificates are not delivered to or as directed by the applicable Holder
 by the second  Trading Day after  the Conversion Date,  the Holder shall  be
 entitled at  any  time on  or  before its  receipt  of such  certificate  or
 certificates thereafter to rescind such conversion by written notice to  the
 Company,  in  which   event  the  Company   shall  immediately  return   the
 certificates representing the  shares of  Preferred Stock  for which  Common
 Stock was not delivered pursuant to such conversion.

           (c) Liquidated Damages; etc.

                (i)  If the  Company  fails to  deliver  to the  Holder  such
      certificate or certificates pursuant to this  Section 5 on or prior  to
      the second Trading Day after the Conversion Date (the "Delivery Date"),
      in addition to all other remedies that such Holder may pursue hereunder
      or under the Purchase Agreement, the  Company shall pay to such  Holder
      in cash, as  liquidated damages and  not as a  penalty, $5,000 per  day
      until such certificates are delivered.  If the Company fails to deliver
      to the Holder such certificate or certificates pursuant to this Section
      5 prior to the 15th day after the Conversion Date the Company shall, at
      the Holder's option,  redeem from funds  legally available therefor  at
      the time of such redemption, such  number of shares of Preferred  Stock
      then held by such  Holder, as requested  by such Holder,  in cash.   If
      such Holder opts  to redeem  any number  of shares  of Preferred  Stock
      pursuant to this  Section 5(c)(i), then  the Company shall  immediately
      notify all other Holders  of such Holder's election  to redeem and,  at
      any other  Holders' option,  which shall  be exercised  within two  (2)
      business days thereof, redeem, from funds legally available therefor at
      the time of such redemption, such  number of shares of Preferred  Stock
      then held by  such other  Holder, as  requested by  such Holder,  which
      redemption shall  be simultaneous  with other  redemptions referred  to
      above.  The redemption price shall be equal to the number of shares  of
      Preferred Stock then held by such Holder multiplied by (1) the  average
      Per Share Market Value for the five Trading Days immediately  preceding
      (x) the Conversion  Date or  (y) the  date of  payment in  full by  the
      Company of such prepayment price,  whichever is greater, multiplied  by
      (2) the Conversion  Ratio calculated on  the Conversion Date.   If  the
      Holder has requested that the Company redeem shares of Preferred  Stock
      pursuant to this Section 5(c)(i) and  the Company fails for any  reason
      to pay the redemption  price referenced above  within seven days  after
      such notice  is  deemed  delivered pursuant  to  Section  5(c)(i),  the
      Company will pay interest on the redemption price at a rate of 15%  per
      annum in cash to such Holder, accruing from such seventh day until  the
      redemption price  and any  accrued interest  thereon is  paid in  full.
      Nothing herein shall limit  a Holder's right  to pursue actual  damages
      for the Company's failure  to deliver certificates representing  shares
      of Common  Stock upon  conversion within  the period  specified  herein
      (including, without  limitation, damages  relating to  any purchase  of
      shares of  Common Stock  by such  Holder  to make  delivery on  a  sale
      effected in anticipation of receiving certificates representing  shares
      of Common Stock upon conversion, such damages to be in an amount  equal
      to (A)  the aggregate  amount paid  by such  Holder for  the shares  of
      Common Stock  so  purchased  minus (B)  the  aggregate  amount  of  net
      proceeds, if any, received by such  Holder from the sale of the  shares
      of Common Stock issued by the Company pursuant to such conversion), and
      such Holder shall have the right to pursue all remedies available to it
      at law  or  in  equity (including,  without  limitation,  a  decree  of
      specific performance and/or injunctive relief).

                (ii) In addition to any other rights available to the Holder,
      if the  Company fails  to deliver  to the  Holder such  certificate  or
      certificates pursuant to Section 5(c)(i) by the Delivery Date and after
      the Delivery Date the Holder purchases  (in an open market  transaction
      or otherwise) shares of Common Stock to deliver to the satisfaction  of
      a sale  by  such Holder  of  the  Underlying Shares  which  the  Holder
      anticipated receiving  on the  Delivery Date  upon such  conversion  (a
      "Buy-In"), then  the  Company shall  pay  in  cash to  the  Holder  (in
      addition to any  remedies available to  or elected by  the Holder)  the
      amount by  which  (A)  the Holder's  total  purchase  price  (including
      brokerage commissions, if any) for the shares of Common Stock purchased
      for a Buy-In exceeds (B) the aggregate Conversion Price for the  number
      of shares of Common Stock in  the Buy-In for which such conversion  was
      not timely honored.   For example,  if the Holder  purchases shares  of
      Common Stock having a total purchase price of $11,000 to cover a Buy-In
      with respect to an attempted conversion of $10,000 aggregate Conversion
      Price for  the number  of shares  of Common  Stock in  the Buy-In,  the
      Company shall be required to pay  the Holder $1,000.  The Holder  shall
      provide the Company  written notice indicating  the amounts payable  to
      the Holder in respect of the Buy-In.

           (d)  Conversion Price.   The conversion  price for  each share  of
 Preferred Stock (the "Conversion  Price") in effect  on any Conversion  Date
 shall be $1.50, subject to adjustment from time to time as provided herein.

           (e)  Restriction  on  Conversion  by  Either  the  Holder  or  the
 Company.  Notwithstanding anything herein to the contrary, in no event shall
 any Holder or the Company have the right or be required to convert shares of
 Preferred Stock if as  a result of such  conversion the aggregate number  of
 shares of Common Stock beneficially owned by such Holder and its  Affiliates
 would exceed 4.99% of the outstanding  shares of the Common Stock  following
 such exercise.   For  purposes of  this Section  5(e), beneficial  ownership
 shall be calculated in accordance with Section 13(d) of the Exchange Act.

           (f)  Nasdaq Limitation.  If on any date:  (a) the Common Stock  is
 listed for  trading on  Nasdaq (or  any other  Subsequent Market),  (b)  the
 number of shares of  Common Stock to  be issued upon  the conversion of  the
 Preferred Stock, combined with  all other issuances  of Common Stock  which,
 under the  requirements of  Nasdaq (or  any  other Subsequent  Market),  are
 required to be aggregated  with such issuance for  determining the need  for
 stockholder approval ("Stockholder Approval") for the listing of the  shares
 to be issued  on Nasdaq  (or any other  Subsequent Market),  would equal  or
 exceed 19.9% of the total number  of shares of the Common Stock  outstanding
 immediately prior to the Original Issuance Date (the "Issuable Maximum") and
 (c) the issuance of shares of Common Stock in excess of the Issuable Maximum
 has not been approved by the stockholders of the Company in accordance  with
 the applicable  rules and  regulations of  Nasdaq (or  any other  Subsequent
 Market) then, to the extent that the conversion of the Preferred Stock would
 result in the issuance of shares of Common Stock in excess of a Holder's pro
 rata allocation of the Issuable Maximum  (the "Excess Amount"), the  Company
 shall use its  reasonable best efforts  to obtain  the Stockholder  Approval
 applicable to such issuance as soon as possible, but in any event not  later
 than the  75th day  after  such request  (the  "Approval Date")  unless  the
 Company has previously used its reasonable  best efforts to, but has  failed
 to, obtain such approval; provided, however, that such Stockholder  Approval
 will satisfy  the  applicable rules  and  regulations of  Nasdaq  (or  other
 Subsequent Market).   If such Stockholder  Approval is not  obtained by  the
 Approval Date, then the Company shall be required, within seventy-five  (75)
 days of the Approval Date, to redeem, from funds legally available  therefor
 at the time of such redemption, in cash, shares of Preferred Stock from each
 Holder in an amount equal to the Excess  Amount, at a price per share  equal
 to the Liquidation Value,  together with any  declared but unpaid  dividends
 and all liquidated damages  and other amounts due  in respect thereof up  to
 the date of such redemption; provided,  however, that in the event that  the
 Company is unable to effect such redemption because of applicable law,  then
 the Company shall pay to each Holder an amount in cash equal to the  greater
 of: (x)(i)  the  Average  Per  Share  Market Value  on  the  date  that  the
 Conversion Notice is received by the  Company multiplied by (ii) the  number
 of shares of Common Stock equal to the Excess Amount or (y) the  Liquidation
 Value of the Preferred Stock that would represent the Excess Amount.

      6.   Registration Requirements.

           (a)  Reservation of Underlying Shares.  The Company covenants that
 it will at all times  reserve and keep available  out of its authorized  and
 unissued Common Stock solely for the purpose of issuance upon conversion  of
 the Preferred Stock  and free  from preemptive  rights or  any other  actual
 contingent purchase rights of  persons other than  the Holders of  Preferred
 Stock, not less than 100% of such number of shares of Common Stock as  shall
 (subject to any additional requirements of the Company as to reservation  of
 such shares set forth  in the Purchase Agreement)  be issuable (taking  into
 account the adjustments of Section 7) upon the conversion of all outstanding
 shares of Preferred Stock  hereunder (without regard  to any limitations  on
 conversion) (the "Reserved Amount").  The Company covenants that all  shares
 of Common Stock that  shall be so  issuable shall, upon  issue, be duly  and
 validly  authorized,  issued  and  fully  paid,  nonassessable  and   freely
 tradable.

           (b)  Registration Delay Payments.  Notwithstanding the  foregoing,
 the provisions  of Section  2(d) of  the Registration  Rights Agreement  are
 incorporated herein by reference.

      7.   Adjustment of Conversion Price.  The provisions of this Section  7
 shall take effect only after the Company has either (A) raised $3 million in
 equity  financing  or  (B)  issued  common  shares  (or  equity   securities
 exchangeable  or  convertible  into  common  shares,  such  as   convertible
 preferred  stock,  convertible  debentures,  warrants,  options,  and   like
 instruments) aggregating 4  million shares in  such transactions, after  the
 date of  this Certificate  of  Designation, and  the  Company shall  not  be
 required to obtain  the specific  prior consent  of the  Purchaser for  such
 transactions, unless  otherwise required  by the  Transaction Documents,  as
 defined in the Securities Purchase Agreement.  Subject to the foregoing,  in
 addition to any  adjustment to the  Conversion Price  provided elsewhere  in
 this Certificate of Designation, the Conversion Price in effect at any  time
 shall be  subject to  adjustment from  time to  time upon  the happening  of
 certain events, as follows:

           (a)  Common Stock Dividends;  Common Stock  Splits; Reverse  Stock
 Splits.   If  the  Company,  at  any  time  while  the  Preferred  Stock  is
 outstanding, (a)  shall  pay a  stock  dividend  on its  Common  Stock,  (b)
 subdivide outstanding shares of Common Stock into a larger number of shares,
 (c) combine outstanding  shares of  Common Stock  into a  smaller number  of
 shares, or  (d) issue  by reclassification  of shares  of Common  Stock  any
 shares of  capital stock  of  the Company,  the  Conversion Price  shall  be
 multiplied by a  fraction, the  numerator of which  shall be  the number  of
 shares of  Common  Stock (excluding  treasury  shares, if  any)  outstanding
 before such event and the denominator of which shall be the number of shares
 of Common Stock outstanding after such event.  Any adjustment made  pursuant
 to this paragraph 7(a) shall become  effective immediately after the  record
 date for the determination of stockholders entitled to receive such dividend
 or distribution and shall become  effective immediately after the  effective
 date in the case of a subdivision, combination or re-classification.

           (b)  Rights; Warrants.   If  the Company,  at any  time while  the
 Preferred Stock is outstanding, shall issue rights or warrants to all of the
 holders of its  Common Stock  entitling them  to subscribe  for or  purchase
 shares of Common  Stock at  a price  per share  less than  one and  one-half
 dollars ($1.50) per  share, the Conversion  Price shall be  multiplied by  a
 fraction, the denominator of which shall  be the number of shares of  Common
 Stock (excluding  treasury  shares,  if any)  outstanding  on  the  date  of
 issuance of such rights or warrants plus the number of additional shares  of
 Common Stock  offered for  subscription or  purchase, and  the numerator  of
 which shall be  the number  of shares  of Common  Stock (excluding  treasury
 shares, if  any) outstanding  on the  date  of issuance  of such  rights  or
 warrants plus the number of shares which the aggregate offering price of the
 total number of shares  so offered would purchase  at the Conversion  Price.
 Such adjustment shall be made whenever  such rights or warrants are  issued,
 and shall  become  effective  immediately after  the  record  date  for  the
 determination of stockholders entitled to receive such rights or warrants.

           (c)  Subscription Rights.  If the Company,  at any time while  the
 Preferred Stock is outstanding,  shall distribute to all  of the holders  of
 Common Stock evidence of its indebtedness or assets or rights or warrants to
 subscribe for  or purchase  any security  (excluding  those referred  to  in
 paragraphs 7(a) and (b) above), then in each such case the Conversion  Price
 at which  the  Preferred Stock  shall  thereafter be  convertible  shall  be
 determined by multiplying the Conversion  Price in effect immediately  prior
 to the  record date  fixed for  determination  of stockholders  entitled  to
 receive such distribution by a fraction,  the denominator of which shall  be
 the Per Share Market Value of Common Stock determined as of the record  date
 mentioned above, and the numerator of  which shall be such Per Share  Market
 Value of the  Common Stock on  such record date  less the  then fair  market
 value at such  record date  of the  portion of  such assets  or evidence  of
 indebtedness so distributed  applicable to one  outstanding share of  Common
 Stock as  determined by  the Board  of Directors  in good  faith;  provided,
 however, that in the event of a distribution exceeding ten percent (10%)  of
 the net assets of the Company, such fair market value shall be determined by
 a nationally recognized or major regional investment banking firm or firm of
 independent  certified  public  accountants   of  recognized  standing   (an
 "Appraiser") selected in good faith by  the Holders of the Preferred  Stock;
 and provided, further, that the Company, after receipt of the  determination
 by such Appraiser shall have the right to select in good faith an additional
 Appraiser meeting the  same qualifications, in  which case  the fair  market
 value shall  be equal  to the  average of  the determinations  by each  such
 Appraiser.  Such adjustment shall be made whenever any such distribution  is
 made and shall become effective immediately after the record date  mentioned
 above.

           (d)  Rounding.  All  calculations under  this Section  7 shall  be
 made to the nearest cent or the nearest l/l00th of a share, as the case  may
 be.

           (e)  Notice of  Adjustment.    Whenever the  Conversion  Price  is
 adjusted pursuant to paragraphs 7(a), (b) or (c), the Company shall promptly
 deliver to the  Holders a notice  setting forth the  Conversion Price  after
 such adjustment and setting forth a  brief statement of the facts  requiring
 such adjustment.

           (f)  Redemption Event.  In case of (A) any reclassification of the
 Common Stock,  (B) any  Change of  Control Transaction,  (C) any  compulsory
 share exchange pursuant to  which the Common Stock  is converted into  other
 securities, cash or property,  (D) suspension from  listing or delisting  of
 the Common  Stock from  the Nasdaq  or any  Subsequent Market  on which  the
 Common Stock is listed for a period of one hundred eighty (180)  consecutive
 days, (E) the  Company's notice to  any Holder, including  by way of  public
 announcement, at any time, of its  intention, for any reason, not to  comply
 with proper requests  for the conversion  of any shares  of Preferred  Stock
 into shares  of  Common  Stock  or  (F) a  breach  by  the  Company  of  any
 representation, warranty,  covenant  or  other  term  or  condition  of  the
 Purchase Agreement, the Registration  Rights Agreement, this Certificate  of
 Designation  or  any  other   agreement,  document,  certificate  or   other
 instrument  delivered  in  connection  with  the  transactions  contemplated
 thereby or hereby, except to  the extent that such  breach would not have  a
 Material Adverse  Effect  (as defined  in  Section 2.1(a)  of  the  Purchase
 Agreement) and  except, in  the case  of a  breach of  a covenant  which  is
 curable, only if such  breach continues for  a period of  at least ten  days
 after the Company knows or reasonably should have known of the existence  of
 such breach (clauses (A) through (F) above are referred to as a  "Redemption
 Event"), in the case of (A), (B) and  (C), the Holders shall have the  right
 thereafter to convert the shares of Preferred Stock for shares of stock  and
 other securities, cash and property receivable upon or deemed to be held  by
 holders of Common  Stock following such  Redemption Event,  and the  Holders
 shall be entitled upon such event to receive such amount of securities, cash
 or property as the shares of the Common Stock of the Company into which  the
 shares of Preferred  Stock could have  been converted  immediately prior  to
 such Redemption  Event  (without  taking into  account  any  limitations  or
 restrictions on the convertibility of the  Preferred Stock) would have  been
 entitled; provided, however, that in the case of a transaction specified  in
 (B) in which holders of the Company's Common Stock receive cash, the Holders
 shall have  the right  to convert  the shares  of Preferred  Stock for  such
 number of shares of the surviving company  equal to the amount of cash  into
 which the shares  of Preferred  Stock are  convertible divided  by the  fair
 market value of the shares of the surviving company on the effective date of
 the merger; provided, further, that on and after the date of any  Redemption
 Event, the Holders shall have the  option to require the Company to  redeem,
 from funds legally available  therefor at the time  of such redemption,  its
 shares of  Common Stock  immediately theretofore  acquirable and  receivable
 upon the conversion of  such Holder's Preferred  Stock (without taking  into
 account any  limitations  or  restrictions  on  the  convertibility  of  the
 Preferred Stock)  at a  price per  share equal  to the  product of  (i)  the
 Average Per Share Market Value immediately preceding (1) the effective date,
 the date of the closing, date of occurrence or the date of the announcement,
 as the case may be, of the Redemption Event triggering such redemption right
 or (2) the date of payment  in full by the  Company of the redemption  price
 hereunder, whichever is greater, and (ii) the Conversion Ratio calculated on
 the effective date, the date of the closing, date of occurrence or the  date
 of the announcement, as the case may be or, at the option of the Holder,  on
 the date of submission of a Redemption Notice.  The entire redemption  price
 shall be paid in  cash, and the  terms of payment  of such redemption  price
 shall be subject to the provisions set forth  in Section 9(b).  In the  case
 of (A), (B) and (C),  the terms of any  such Redemption Event shall  include
 such terms so as to continue to give to the Holders the right to receive the
 securities, cash  or  property set  forth  in  this Section  7(f)  upon  any
 conversion or redemption  following such Redemption  Event.  This  provision
 shall similarly apply to successive Redemption Events.

           (g)  Reclassification, Etc.  If:

           A.   the  Company  shall   declare  a  dividend   (or  any   other
                distribution) on its Common Stock; or

           B.   the  Company  shall  declare  a  special  nonrecurring   cash
                dividend on or a redemption of its Common Stock; or

           C.   the Company shall  authorize the granting  to the holders  of
                the Common  Stock  rights or  warrants  to subscribe  for  or
                purchase any shares of capital stock  of any class or of  any
                rights; or

           D.   the approval  of any  stockholders of  the Company  shall  be
                required in  connection  with  any  reclassification  of  the
                Common Stock of the Company,  any consolidation or merger  to
                which the Company is a party, any sale or transfer of all  or
                substantially all  of  the  assets of  the  Company,  of  any
                compulsory share  of exchange  whereby  the Common  Stock  is
                converted into other securities, cash or property; or

           E.   the Company  shall  authorize the  voluntary  or  involuntary
                dissolution, liquidation or winding up of the affairs of  the
                Company;

 then the Company shall cause to be filed at each office or agency maintained
 for the purpose of the conversion of the Preferred Stock, and shall cause to
 be mailed  to the  Holders at  the  address specified  herein, at  least  15
 calendar days prior to the applicable  record or effective date  hereinafter
 specified, a notice  (provided such notice  shall not  include any  material
 non-public information) stating  (a) the  date on which  a record  is to  be
 taken for the purpose of such dividend, distribution, redemption, rights  or
 warrants, or if  a record  is not  to be  taken, the  date as  of which  the
 holders of  Common  Stock  of  record  to  be  entitled  to  such  dividend,
 distributions, redemption, rights or  warrants are to  be determined or  (b)
 the date  on  which  such  reclassification,  consolidation,  merger,  sale,
 transfer or share exchange is expected to become effective or close, and the
 date as of which it is expected that holders of Common Stock of record shall
 be entitled to exchange their shares of Common Stock for securities, cash or
 other  property  deliverable  upon  such  reclassification,   consolidation,
 merger, sale,  transfer  or  share exchange;  provided,  however,  that  the
 failure to mail such notice or any defect therein or in the mailing  thereof
 shall not  affect  the validity  of  the  corporate action  required  to  be
 specified in such notice.  Notwithstanding  the foregoing, Holders shall  be
 entitled to  convert shares  of Preferred  Stock  during the  15-day  period
 commencing the  date of  such notice  to  the effective  date of  the  event
 triggering such notice.

           (h)  Adjustment to Conversion Price.  In order to prevent dilution
 of the rights granted under this Certificate of Designation, the  Conversion
 Price will be further subject to adjustment from time to time as provided in
 this Section 7(h):

                (i)  Adjustment of Conversion Price  upon Issuance of  Common
      Stock.  If  at any time  while the Preferred  Stock is outstanding  the
      Company issues  or sells,  or is  deemed to  have issued  or sold,  any
      shares of Common Stock (other than  the Underlying Shares or shares  of
      Common Stock deemed to  have been issued by  the Company in  connection
      with an Approved Stock Plan or shares of Common Stock issuable upon the
      exercise of any options or warrants outstanding on the date hereof  and
      listed in Schedule 2.1(c) of the Purchase Agreement or shares of Common
      Stock issued or  deemed to  have been  issued as  consideration for  an
      acquisition by the Company of a division, assets or business (or  stock
      constituting  any  portion   thereof)  from  another   person)  for   a
      consideration per share  less than  $1.50 per  share, then  immediately
      after such issue or sale the  Conversion Price then in effect shall  be
      reduced to an  amount equal to  the consideration per  share of  Common
      Stock of  such issuance  or  sale.   For  purposes of  determining  the
      adjusted Conversion  Price under  this Section  7(h)(i), the  following
      shall be applicable:

                (A)  Issuance of Options.  If at any time while the Preferred
      Stock is outstanding  the Company in  any manner grants  any rights  or
      options to subscribe for  or to purchase Common  Stock or any stock  or
      other securities  convertible into  or  exchangeable for  Common  Stock
      (other than the Underlying Shares or  shares of Common Stock deemed  to
      have been issued by  the Company in connection  with an Approved  Stock
      Plan or  shares of  Common  Stock issuable  upon  the exercise  of  any
      options or  warrants  outstanding on  the  date hereof  and  listed  in
      Schedule 2.1(c) of  the Purchase Agreement  or shares  of Common  Stock
      issued  or  deemed  to  have  been  issued  as  consideration  for   an
      acquisition by the Company of a division, assets or business (or  stock
      constituting any portion thereof) from another Person) (such rights  or
      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  $1.50 per  share, then  the
      Conversion Price shall  be reduced  to equal  the price  per share  for
      which Common Stock  is issuable upon  the exercise of  such Options  or
      upon the conversion  or exchange of  such Convertible  Securities.   No
      adjustment of  the  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 at  any  time
      while the  Preferred Stock  is outstanding  the Company  in any  manner
      issues or sells any Convertible  Securities (other than the  Underlying
      Shares or shares  of Common  Stock deemed to  have been  issued by  the
      Company in connection with an Approved  Stock Plan or shares of  Common
      Stock issuable upon the exercise of any options or warrants outstanding
      on the  date hereof  and  listed in  Schedule  2.1(c) of  the  Purchase
      Agreement or  shares of  Common Stock  issued or  deemed to  have  been
      issued as consideration for an acquisition (including earn-out payments
      funded with  Common Stock)  by the  Company of  a division,  assets  or
      business (or  stock  constituting  any portion  thereof)  from  another
      Person) and the price per share for which Common Stock is issuable upon
      such conversion or  exchange is  less than  $1.50 per  share, then  the
      Conversion Price shall be reduced to  an amount equal to the price  per
      share for which  the Common Stock  is issuable upon  the conversion  or
      exchange  of  such  Convertible  Securities.    No  adjustment  of  the
      Conversion Price shall be made upon the actual issuance of such  Common
      Stock upon conversion or exchange of such Convertible Securities.

                (C)  Change in Option Price or Rate of Conversion.  If  there
      is a change at any time in (i)  the purchase price provided for in  any
      Options, (ii) the  additional consideration, if  any, payable upon  the
      issue, conversion or  exchange of any  Convertible Securities or  (iii)
      the rate at which  any Convertible Securities  are convertible into  or
      exchangeable for Common  Stock, then immediately  after such change  in
      option price or rate  of conversion the Conversion  Price in effect  at
      the time of  such change shall  be readjusted to  the 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 Conversion Price then in effect.

                (D)  Effect on  Conversion  Price  of Certain  Events.    For
      purposes of  determining  the  adjusted  Conversion  Price  under  this
      Section 7(h)(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 net  amount received by the  Company
      therefor.  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  Average Per  Share Market  Value
      immediately preceding 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  consideration other  than  cash or  securities  will  be
      determined jointly by the Company and the Holders of a majority of  the
      aggregate number of  shares of Preferred  Stock then  outstanding.   If
      such parties  are unable  to reach  agreement within  twenty (20)  days
      after the occurrence  of an event  requiring valuation (the  "Valuation
      Event"), the fair value of such consideration will be determined within
      four (4) days of the twentieth (20th) day following the Valuation Event
      by an Appraiser selected in good faith by the Company, and agreed  upon
      in good faith by the registered owners  of a majority of the shares  of
      Preferred Stock then outstanding.  The determination of such  Appraiser
      shall be 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  an
      aggregate 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.

                     (V)  Certain Events.   If any event  occurs of the  type
      contemplated by  the  provisions of  Section  7(h)(i) (subject  to  the
      exceptions stated  therein)  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  or assigns;  provided,  however, that  no  such
      adjustment will increase the  Conversion Price as otherwise  determined
      pursuant to this Section 7(h).

           (i)  Increase  in  Conversion  Price.    In  no  event  shall  any
 provision in this Section  7 cause the Conversion  Price to be greater  than
 the Conversion Price on the Original Issue Date.

      8.   Major  Announcement.     If  the  Company   (i)  makes  a   public
 announcement that it intends to enter  into a Change of Control  Transaction
 or (ii) any person, group or entity (including the Company, but excluding  a
 Holder or any affiliate of a  Holder) publicly announces a bona fide  tender
 offer, exchange offer or  other transaction to purchase  50% or more of  the
 Common Stock  (such  announcement  being referred  to  herein  as  a  "Major
 Announcement" and  the date  on  which a  Major  Announcement is  made,  the
 "Announcement Date"), then,  in the  event that  a Holder  seeks to  convert
 shares of  Preferred  Stock  on or  following  the  Announcement  Date,  the
 Conversion Price shall, effective upon the Announcement Date and  continuing
 through the earlier to occur of the consummation of the proposed transaction
 or tender offer,  exchange offer or  other transaction  and the  Abandonment
 Date (as defined below), be equal to the lesser of (A) the Conversion  Price
 in effect on the Trading Day immediately preceding the Announcement Date for
 such Preferred Stock and (B) the  Conversion Price on such Conversion  Date.
 "Abandonment Date" means with respect to any proposed transaction or  tender
 offer, exchange offer or other transaction  for which a public  announcement
 as contemplated by  this paragraph has  been made, the  date upon which  the
 Company (in the case of clause (i) above) or the person, group or entity (in
 the case  of  clause  (ii) above)  publicly  announces  the  termination  or
 abandonment of the proposed transaction or  tender offer, exchange offer  or
 another transaction  which caused  this paragraph  to become  operative,  in
 which case the Conversion Price shall revert back to the Conversion Price in
 effect on the Trading Day immediately preceding the Announcement Date.

      9.   Mandatory Redemption.

           (a)  All outstanding and unconverted shares of Preferred Stock  on
 June 30, 2004  (the "Redemption  Date") shall  be, at  the Holders'  option,
 converted pursuant to Section 5 or redeemed by the Company pursuant to  this
 Section 9, from funds legally available therefor at a price per share  equal
 to the  product  of (i)  the  Average  Per Share  Market  Value  immediately
 preceding (1) the Redemption Date or (2) the date of payment in full by  the
 Company of the redemption  price hereunder, whichever  is greater, and  (ii)
 the Conversion Ratio  calculated on the  Redemption Date.   Thereafter,  all
 shares of Preferred Stock shall cease  to be outstanding and shall have  the
 status  of  authorized  but  undesignated  preferred   stock.   The   entire
 redemption price shall be paid in cash.

           (b)  If any  portion  of  the applicable  redemption  price  under
 Section 9(a) shall not be paid by the Company within seven (7) calendar days
 after the date due,  interest shall accrue  thereon at the  rate of 15%  per
 annum until the  redemption price  plus all such  interest is  paid in  full
 (which amount shall be paid as liquidated damages and not as a penalty).  In
 addition, if any portion  of such redemption price  remains unpaid for  more
 than seven (7) calendar days after the date due, the Holder of the Preferred
 Stock subject to such redemption may elect, by written notice to the Company
 given within 30 days after the date due, to either (i) demand conversion  in
 accordance with the formula and the time frame therefor set forth in Section
 5 of all of the shares of  Preferred Stock for which such redemption  price,
 plus accrued liquidated  damages thereof,  has not  been paid  in full  (the
 "Unpaid Redemption Shares"), in  which event the  Conversion Price for  such
 shares shall be the lower  of the Per Share  Market Price calculated on  the
 date such redemption price was originally due and the Per Share Market Price
 as of the  Holder's written  demand for  conversion, or  (ii) invalidate  ab
 initio such  redemption, notwithstanding  anything herein  contained to  the
 contrary.  If the Holder elects  option (i) above, the Company shall  within
 five (5) Trading Days of its receipt of such election deliver to the  Holder
 the shares of Common Stock issuable upon conversion of the Unpaid Redemption
 Shares subject to such  Holder conversion demand  and otherwise perform  its
 obligations hereunder with respect thereto; or, if the Holder elects  option
 (ii) above, the Company shall promptly, and in any event not later than five
 (5) Trading Days from receipt of Holder's notice of such election, return to
 the Holder all of the Unpaid Redemption Shares.

      10. Allocations of  Reserved Amount.    The Reserved  Amount  shall  be
 allocated pro  rata among  the Holders  based  on the  number of  shares  of
 Preferred Stock issued to each Holder.  Each increase to the Reserved Amount
 shall be allocated pro rata among the Holders based on the number of  shares
 of Preferred Stock held by each  Holder at the time  of the increase in  the
 Reserved Amount.  In the event a Holder shall sell or otherwise transfer any
 of such Holder's Preferred Stock, each  transferee shall be allocated a  pro
 rata portion  of such  transferor's Reserved  Amount.   Any portion  of  the
 Reserved Amount which remains allocated to  any person or entity which  does
 not hold any Preferred  Stock shall be allocated  to the remaining  Holders,
 pro rata, based on the number of shares of Preferred Stock then held by such
 Holders.

      11. Definitions.   For the purposes hereof, the  following terms  shall
 have the following meanings:

      "Approved Stock Plan" shall mean any contract, plan or agreement  which
 has been approved  by the  Board of Directors  of the  Company, pursuant  to
 which the  Company's securities  may be  issued  to any  employee,  officer,
 director or consultant.

      "Average Per Share Market Value" means, on any date, the average of the
 Per Share Market Value for the five Trading Days immediately preceding  such
 date.

      "Business Day" shall mean  any day except Saturday,  Sunday or any  day
 which shall be a legal holiday or a day on which banking institutions in the
 State of New  York are  authorized or required  by law  or other  government
 action to close.

      "Change of Control Transaction" means the  occurrence of any of (i)  an
 acquisition after  the date  hereof  by an  individual  or legal  entity  or
 "group" (as described in Section 13(d)(3) of the Exchange Act), of in excess
 of 33% of the voting securities of  the Company, (ii) a replacement of  more
 than one-half of the  members of the Company's  board of directors which  is
 not approved by a majority of those individuals who are members of the board
 of directors on the  date hereof, or their  duly elected successors who  are
 directors immediately  prior to  such transaction,  in one  or a  series  of
 related transactions, (iii) the merger of  the Company with or into  another
 entity, (iv) the consolidation  or sale of all  or substantially all of  the
 assets of the Company in one or a series of related transactions, or (v) the
 execution by the Company of an agreement to which the Company is a party  or
 by which it is  bound, providing for any  of the events  set forth above  in
 (i), (ii), (iii), (iv) or (v).

      "Closing Date" means the date of  the closing of the purchase and  sale
 of the Preferred Stock.

      "Commission"  means   the  United   States  Securities   and   Exchange
 Commission, or any successor to such agency.

      "Common Stock" means  the Company's common  stock, $.80  par value  per
 share, and stock  of any other  class into which  such shares may  hereafter
 have been reclassified or changed.

      "Conversion Price" shall have the meaning set forth in Section 5(d).

      "Conversion Ratio" means,  at any time,  a fraction,  the numerator  of
 which is  the  Liquidation  Value  and  the  denominator  of  which  is  the
 Conversion Price at such time.

      "Junior Securities"  means  the  Common  Stock  and  all  other  equity
 securities of the Company.

      "Nasdaq" means the National Association of Securities Dealers Automated
 Quotation System.

      "Original Issue Date" shall mean the date of the first issuance of  any
 shares of the Preferred Stock regardless  of the number of transfers of  any
 particular shares  of  Preferred  Stock and  regardless  of  the  number  of
 certificates which may be issued to evidence such Preferred Stock.

      "Per Share Market Value" means on  any particular date (a) the  closing
 bid price  per share  of the  Common  Stock on  such  date (as  reported  by
 Bloomberg Information Services, Inc., or any successor reporting service) on
 Nasdaq or, if the Common Stock is not then quoted on Nasdaq, any  Subsequent
 Market on which the Common Stock is then listed or if there is no such price
 on such  date, then  the closing  bid price  on such  exchange or  quotation
 system on the date nearest preceding such  date, or (b) if the Common  Stock
 is not then listed on Nasdaq or any Subsequent Market, the closing bid price
 for a share of Common Stock  in the over-the-counter market, as reported  by
 the National  Quotation  Bureau  Incorporated (or  similar  organization  or
 agency succeeding to  its functions  of reporting  prices) at  the close  of
 business on such  date, or  (c) if  the Common  Stock is  not then  publicly
 traded the fair market value of a share of Common Stock as determined by  an
 Appraiser selected in good faith by the Holders of a majority in interest of
 the shares  of the  Preferred Stock;  provided, however,  that the  Company,
 after receipt of the determination by  such Appraiser, shall have the  right
 to select in  good faith an  additional Appraiser, in  which case, the  fair
 market value shall  be equal to  the average of  the determinations by  each
 such Appraiser; and  provided, further that  all determinations  of the  Per
 Share Market Value shall be appropriately adjusted for any stock  dividends,
 stock splits or other similar transactions during such period.

      "Person"  means   a  corporation,   an  association,   a   partnership,
 organization,  a  business,  an   individual,  a  government  or   political
 subdivision thereof or a governmental agency.

      "Purchase Agreement" means the Securities Purchase Agreement, dated  as
 of the Original Issue  Date, among the Company  and the original Holders  of
 the Preferred Stock.

      "Registration  Rights   Agreement"   means  the   Registration   Rights
 Agreement, dated as of the Original Issue Date, by and among the Company and
 the original Holders.

      "Subsequent Market" means the New  York Stock Exchange, American  Stock
 Exchange or Nasdaq SmallCap Market.

      "Trading Day" means (a) a  day on which the  Common Stock is traded  on
 Nasdaq or, if the  Common Stock is  not then designated  on Nasdaq, on  such
 Subsequent Market on which the Common Stock is then listed or quoted, or (b)
 if the Common Stock is not listed on Nasdaq or a Subsequent Market, a day on
 which the Common Stock is quoted in the over-the-counter market as  reported
 by the National Quotation Bureau  Incorporated (or any similar  organization
 or agency succeeding its functions of reporting prices); provided,  however,
 that in the event that the Common Stock is not listed or quoted as set forth
 in (a), (b) and (c) hereof, then Trading Day shall mean any Business Day.

      "Underlying Shares" means  the number of  shares of  Common Stock  into
 which the shares of Preferred Stock  are convertible in accordance with  the
 terms hereof and the Purchase Agreement.

      12.  Notices.  Except as otherwise provided in the event of  conversion
 of shares of Preferred Stock, all  notices or other communications  required
 hereunder shall be in writing and shall be deemed to have been received  (a)
 upon hand delivery (receipt acknowledged) or delivery by telex (with correct
 answer back received) telecopy or facsimile (with transmission  confirmation
 report) at the address or number designated below (if received by 8:00  p.m.
 EST where  such  notice  is to  be  received),  or the  first  business  day
 following such delivery (if received after  8:00 p.m. EST where such  notice
 is to be received) or (b) on the  second business day following the date  of
 mailing by  express  courier  service,  fully  prepaid,  addressed  to  such
 address, or  upon actual  receipt of  such  mailing, whichever  shall  first
 occur; and shall be regarded as properly addressed if sent to the parties or
 their representatives at the addresses given below:

         To the Company:  uniView Technologies Corp.
                          17300 North Dallas Parkway, Suite 2050
                          Dallas, TX 75248
                          Attn: Mr.  Patrick A. Custer, Chairman/CEO
                          Phone: (972) 233-0900
                          Fax: (972) 248-3060

         With Copies to:  uniView Technologies Corp.
                          17300 North Dallas Parkway, Suite 2050
                          Dallas, TX 75248
                          Attn: Mr.  Billy J.  Robinson, General Counsel
                          Phone: (972) 233-0900
                          Fax: (972) 248-3525

         To the Holders:  Brown Simpson Partners I, Ltd.
                          152 West 57th Street, 21st Floor
                          New York, New York 10019
                          Attn: Peter D. Greene
                          Phone: (212) 247-8200
                          Fax: (212) 817-5391

 or such other address as any  of the above may  have furnished to the  other
 parties in writing by registered mail, return receipt requested.

      13.  Lost or  Stolen Certificates.   Upon  receipt  by the  Company  of
 evidence reasonably  satisfactory to  the Company  (including any  bond  the
 Company's transfer agent requires the Holders  to post) of the loss,  theft,
 destruction or mutilation of  any stock certificates representing  Preferred
 Stock,  and,  in   the  case  of   loss,  theft  or   destruction,  of   any
 indemnification undertaking by the Holder to  the Company in customary  form
 and, in the  case of  mutilation, upon  surrender and  cancellation of  such
 Series C 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 Stock into Common Stock.

      14.  Remedies Characterized; Other Obligations, Breaches and Injunctive
 Relief.  The remedies provided in  this Certificate of Designation shall  be
 cumulative and  in  addition to  all  other remedies  available  under  this
 Certificate of  Designation, 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 Designation.   The Company  covenants to  each
 Holder of Preferred Stock that there shall be no characterization concerning
 this  instrument  other  than as  expressly  provided  herein.  The  Company
 further covenants that it  will not take any  action which might  materially
 and adversely affect the rights of the Holders of Preferred Stock.   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 Stock and  that
 the remedy at law in the  event of 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 Stock 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 Designation shall limit or modify
 any  more  general  provision  contained   herein.   This   Certificate   of
 Designation shall be  deemed to be  jointly drafted by  the Company and  the
 Purchaser (as defined in this Purchase Agreement) 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 Stock  in the  exercise of  any power,  right  or
 privilege hereunder shall operate as a waiver thereof, 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.  Fractional Shares.  Upon a conversion hereunder, the Company shall
 not be required to issue stock certificates representing fractions of shares
 of Common Stock,  but may  if otherwise permitted,  make a  cash payment  in
 respect of any final fraction of a share based on the Per Share Market Value
 at such time.  If the Company elects not, or is unable, to make such a  cash
 payment, the  Holder of  a share  of Preferred  Stock shall  be entitled  to
 receive, in lieu of the final fraction of a share, one whole share of Common
 Stock.

      18.   Payment  of  Tax  Upon  Issue  of  Transfer.    The  issuance  of
 certificates for shares of the Common Stock upon conversion of the Preferred
 Shares shall  be  made  without  charge  to  the  Holders  thereof  for  any
 documentary stamp or  similar taxes that  may be payable  in respect of  the
 issue or delivery of such certificate,  provided that the Company shall  not
 be required to pay any tax  that may be payable  in respect of any  transfer
 involved  in  the  issuance  and  delivery  of  any  such  certificate  upon
 conversion in a name  other than that  of the Holders  so converted and  the
 Company shall not be required to  issue or deliver such certificates  unless
 or until the person  or persons requesting the  issuance thereof shall  have
 paid to the Company the amount of such tax or shall have established to  the
 satisfaction of the Company that such tax has been paid.

      19.  Shares Owned by  Company Deemed Not  Outstanding.  In  determining
 whether the  holders  of the  outstanding  shares of  Preferred  Stock  have
 concurred in  any direction,  consent or  waiver under  this Certificate  of
 Designation, shares of Preferred Stock which are owned by the Company or any
 other obligor  on the  warrants  or by  any  person directly  or  indirectly
 controlling or controlled by or under direct or indirect common control with
 the Company or  any other obligor  on such shares  shall be disregarded  and
 deemed not to  be outstanding  for the  purpose of  any such  determination;
 provided that any Preferred Stock owned by the Purchaser (as defined in  the
 Purchase Agreement) shall be deemed outstanding for purposes of making  such
 a determination.  Preferred Stock so  owned which have been pledged in  good
 faith may  be regarded  as outstanding  if the  pledgee establishes  to  the
 satisfaction of the Company  the pledgee's right so  to act with respect  to
 such warrants and that the pledgee is  not the Company or any other  obligor
 upon the  securities or  any person  directly or  indirectly controlling  or
 controlled by or under direct or indirect common control with the Company or
 any other obligor on the preferred stock.

      20.  Compliance with Governmental Requirements.  The Company  covenants
 that if any shares of Common Stock  required to be reserved for purposes  of
 conversion  of  Preferred  Stock  hereunder  require  registration  with  or
 approval of any governmental  authority under any Federal  or state law,  or
 any national  securities exchange,  before such  shares may  be issued  upon
 conversion, the Company will use its best efforts to cause such shares to be
 duly registered or approved, as the case may be.

      21.  Modification of Certificate of  Designation.  This Certificate  of
 Designation may be  modified without  prior notice  to any  Holder upon  the
 written consent of  the Company  and the  Holders of  more than  75% of  the
 shares of Preferred Stock then outstanding.  The Holders of more than 75% of
 the shares of Preferred Stock then  outstanding may waive compliance by  the
 Company with any provision of this Certificate of Designation without  prior
 notice to any Holder.  However, without the consent of each Holder affected,
 an amendment, supplement or waiver may  not (1) reduce the number of  shares
 of Preferred Stock whose Holders must consent to an amendment, supplement or
 waiver, or  (2) make  any shares  of  Preferred Stock  payable in  money  or
 property other than as stated in the Certificate of Designation.

      22.  Effect  of  Headings.    The  section  headings  herein  are   for
 convenience only and shall not affect the construction hereof.

<PAGE>

                                     EXHIBIT A

                             NOTICE OF CONVERSION
                          AT THE ELECTION OF HOLDER

 (To be Executed by the Registered
 Holder in order to Convert shares
 of Series C Preferred Stock)

      The undersigned hereby elects to convert the number of shares of Series
 2002-G Convertible Preferred  Stock indicated below,  into shares of  common
 stock,  par  value  $.80  per  share   (the  "Common  Stock"),  of   uniView
 Technologies Corporation (the "Company") according to the conditions hereof,
 as of the date written below.  If shares are to  be issued in the name of  a
 person other than undersigned, the undersigned  will pay all transfer  taxes
 payable with respect  thereto and is  delivering herewith such  certificates
 and opinions as reasonably requested by the Company in accordance therewith.
 No fee will be  charged to the  Holder for any  conversion, except for  such
 transfer taxes, if any.

 Conversion calculations:
                            ____________________________________________
                            Date to Effect Conversion

                            ____________________________________________
                            Number  of shares  of  Series 2002-G  Preferred
                            Stock to be Converted

                            ____________________________________________
                            Number of shares of Common Stock to be Issued

                            ____________________________________________
                            Applicable Conversion Price

                            ____________________________________________
                            Signature

                            ____________________________________________
                            Name

                            ____________________________________________
                            Address<PAGE>
                                                                    Exhibit 4.21

                   AMENDMENT OF SECURITIES PURCHASE AGREEMENT

WHEREAS, CLEAN HARBORS, INC., a Massachusetts corporation (the "Company"), is
party to a Securities Purchase Agreement dated as of April 12, 2001 (the
"Purchase Agreement") among the Company and the institutional investors
identified on Annex I to the Purchase Agreement (collectively, the
"Purchasers"), pursuant to which the Company sold on April 30, 2001 (the
"Closing Date"), $35,000,000 in aggregate original principal amount of the
Company's 16% Senior Subordinated Notes due 2008 (the "Notes"), with detachable
warrants entitling the holders to purchase, in the aggregate, 1,519,020 shares
of common stock, $.01 par value of the Company at the time of issue;

WHEREAS, Section 1.3 (ii) of the Purchase Agreement provides certain terms for
the payment by the Company of accrued interest on the Notes, and the Company and
the Purchasers wish to amend said Section 1.3 (ii) as described below;

NOW, THEREFORE, the Company and the Purchasers do hereby agree as follows:

      1.   Section 1.3 (ii) of the Purchase Agreement is hereby amended to read
as follows:

      (ii) Interest Payments. Interest on each Note shall be payable semi-
annually in arrears on October 30th and April 30th of each year (each, an
"Interest Payment Date"), commencing on the first of such dates to follow the
Closing Date, and upon any prepayment or repayment of such Note. Interest shall
be paid as follows:

           (a) on each Interest Payment Date through the Interest Payment Date
      occurring on April 30, 2006 (except for the Interest Payment Dates
      occurring on April 30, 2002, and October 30, 2002, on which all accrued
      interest shall be paid in cash) (1) interest accrued on the Notes since
      the last Interest Payment Date at an annual rate of 14% shall be paid in
      cash and (2) interest in excess thereof accrued on the Notes since the
      last Interest Payment Date shall be compounded, shall be added to and from
      thereafter shall be deemed to be principal amount outstanding of such note
      and shall itself bear interest as provided in clause (i) of this Section
      1.3 or, at the election of the Company given by irrevocable written notice
      at least 30 days, and not more than 60 days, prior to an Interest Payment
      Date, shall be paid in cash;

           (b) on each Interest Payment Date after April 30, 2006, all then
      accrued interest on each Note shall be due and payable in cash; and

           (c) upon any date on which principal is prepaid or repaid, all
      accrued interest on the principal amount being prepaid or repaid shall be
      due and payable in cash.

      2.   Except as specified above with respect to Section 1.03 (ii), the
provisions of the Purchase Agreement shall remain in full force and effect.

<PAGE>

IN WITNESS WHEREOF, this Amendment to Securities Purchase Agreement is executed
as an instrument under seal to be effective as of December 26, 2001.

COMPANY:           CLEAN HARBORS, INC.

                   By: /s/ Stephen H. Moynihan
                           -------------------------------
                       Stephen H. Moynihan, Vice President

PURCHASERS:        JOHN HANCOCK LIFE INSURANCE COMPANY

                   By: /s/ Kathleen E. McDonough
                           -------------------------------
                       Name: Kathleen E. McDonough
                            ------------------------------
                       Title: Director
                             -----------------------------

                   JOHN HANCOCK VARIABLE LIFE INSURANCE COMPANY

                   By: /s/ Kathleen E. McDonough
                           -------------------------------
                       Name: Kathleen E. McDonough
                            ------------------------------
                       Title: Director
                             -----------------------------

                   SIGNATURE 4 LIMITED

                   By: John Hancock Life Insurance Company, as Portfolio Advisor

                   By: /s/ Kathleen E. McDonough
                           -------------------------------
                       Name: Kathleen E. McDonough
                            ------------------------------
                       Title: Director
                             -----------------------------

                   SIGNATURE 5 L.P.

                   By: John Hancock Life Insurance Company, as Portfolio Advisor

                   By: /s/ Kathleen E. McDonough
                           -------------------------------
                       Name: Kathleen E. McDonough
                            ------------------------------
                       Title: Director
                             -----------------------------

<PAGE>

                          SPECIAL VALUE BOND FUND, LLC

                               By: SVIM/MSM, LLC
                                   as Manager

                            By: TENNEBAUM & CO., LLC
                        as Managing Member of the Manager

                           By: /s/ Howard M. Levkowitz
                              -------------------------
                            Name: Howard M. Levkowitz
                                  -------------------
                            Title:Principal
                                  ---------

                            ARROW INVESTMENT PARTNERS
                     By: Grandview Capital Management, LLC,
                               Investment Manager

                             By: /s/ Robert E. Sydow
                                 -------------------
                                 Robert E. Sydow, President

                        BILL AND MELINDA GATES FOUNDATION
                     By: Grandview Capital Management, LLC,
                               Investment Manager

                             By: /s/ Robert E. Sydow
                                 -------------------
                                 Robert E. Sydow, President

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