SONUS CORP
PRE 14A, 1999-10-15
MISC HEALTH & ALLIED SERVICES, NEC
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SCHEDULE 14A INFORMATION
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934
(Amendment No.  )

Filed by the Registrant [x]
Filed by a Party other than the Registrant [ ]
Check the appropriate box:
[x] Preliminary Proxy Statement          [ ] Confidential, for Use of
[ ] Definitive Proxy Statement                 the Commission Only (as
[ ] Definitive Additional Materials            permitted by
[ ] Soliciting Material Pursuant to            Rule 14a-6(e)(2))
            Section 240.14a-11(c)
            or Section 240.14a-12

                                   Sonus Corp.
- --------------------------------------------------------------------------------

                (Name of Registrant as Specified In Its Charter)

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

    (Name of  Person(s)  Filing Proxy  Statement  if other than the  Registrant)
Payment of Filing Fee (Check the appropriate box):
[x] No fee required.
[ ] Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

    1)  Title of each class of securities to which transaction applies:

- --------------------------------------------------------------------------------
    2)  Aggregate number of securities to which transaction applies:

- --------------------------------------------------------------------------------
    3)  Per unit  price  or  other  underlying  value  of  transaction  computed
    pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing
    fee is calculated and state how it was determined):

- --------------------------------------------------------------------------------
    4)  Proposed maximum aggregate value of transaction:

- --------------------------------------------------------------------------------
    5)  Total fee paid:

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

[ ] Fee paid previously with preliminary materials.

[ ] Check box if any part of the fee is offset as provided by Exchange  Act Rule
0-11(a)(2)  and  identify  the  filing  for  which the  offsetting  fee was paid
previously.  Identify the previous filing by registration  statement  number, or
the Form or Schedule and the date of its filing.

<PAGE>

    1)  Amount Previously Paid:

- --------------------------------------------------------------------------------
    2)  Form, Schedule or Registration Statement No.:

- --------------------------------------------------------------------------------
    3)  Filing Party:

- --------------------------------------------------------------------------------
    4)  Date Filed:

- --------------------------------------------------------------------------------
<PAGE>
                                PRELIMINARY COPY
                                   SONUS CORP.
                        111 S.W. FIFTH AVENUE, SUITE 1620
                             PORTLAND, OREGON 97204
                              --------------------

                          NOTICE OF ANNUAL AND SPECIAL
                         GENERAL MEETING OF SHAREHOLDERS
                                DECEMBER 15, 1999
                              --------------------

        NOTICE IS HEREBY  GIVEN that the Annual and Special  General  Meeting of
the  holders  of Common  Shares  (the  "Common  Shares"),  Series A  Convertible
Preferred  Shares (the "Series A Shares"),  and Series B  Convertible  Preferred
Shares  (the  "Series B Shares"  and,  together  with the  Series A Shares,  the
"Preferred  Shares")  of  Sonus  Corp.  (the  "Corporation")  will  be  held  at
Atwater's,  30th Floor, 111 S.W. Fifth Avenue,  Portland,  Oregon, on Wednesday,
December 15, 1999, at 10 a.m. Pacific Time, for the following purposes:

1.      To fix the number of directors of the Corporation at eight;

2.      To elect directors;

3.      To appoint  auditors for the ensuing year and to authorize  the Board of
        Directors to fix the remuneration to be paid to the auditors;

4.      To  consider  and approve an  amendment  to the  Corporation's  Articles
        amending and restating the terms of the  Corporation's  Series A Shares,
        including  consolidating  and  changing the  13,333,333  Series A Shares
        outstanding into 2,666,666 issued Series A Shares;

5.      To  receive  and  consider  the  annual  report   containing   financial
        statements  for the fiscal year ended July 31, 1999,  together  with the
        report of the auditors thereon; and

6.      To transact such other  business as may properly come before the meeting
        or any adjournment thereof.

        Only holders of record of Common Shares or Preferred Shares at the close
of business on October 29, 1999, are entitled to receive notice of the meeting.

                                            BY ORDER OF THE BOARD OF DIRECTORS


November 5, 1999                            Brian S. Thompson
Portland, Oregon                            Secretary

        We ask that you promptly sign, date and return the enclosed proxy in the
enclosed  return  envelope,  whether  or not you plan to attend  the  meeting in
person.  If you do attend the meeting,  you may withdraw  your proxy and vote in
person.  All  instruments  appointing  proxies to be used at the meeting must be
deposited at the offices of CIBC Mellon Trust Company, Suite 600, 333-7th Avenue
SW, Calgary,  Alberta, Canada, T2P 2Z1 (P.O. Box 2517, Calgary, Alberta, Canada,
T2P 4P4), prior to 10 a.m.  (Calgary time) on December 14, 1999, or delivered to
the chairman of the meeting prior to the  commencement of the meeting.  A person
appointed as a proxy need not be a shareholder of the Corporation.


<PAGE>

                                   SONUS CORP.
                              --------------------

                       ANNUAL AND SPECIAL GENERAL MEETING
                 OF SHAREHOLDERS TO BE HELD ON DECEMBER 15, 1999

                         MANAGEMENT INFORMATION CIRCULAR
                               AND PROXY STATEMENT
                              --------------------

                             SOLICITATION OF PROXIES

        THIS   MANAGEMENT   INFORMATION   CIRCULAR  AND  PROXY  STATEMENT  (THIS
"CIRCULAR") IS FURNISHED IN CONNECTION  WITH THE  SOLICITATION BY THE MANAGEMENT
OF SONUS  CORP.  (THE  "CORPORATION")  OF  PROXIES  TO BE USED AT THE ANNUAL AND
SPECIAL  GENERAL  MEETING OF THE  SHAREHOLDERS  OF THE CORPORATION TO BE HELD AT
ATWATER'S,  30TH FLOOR, 111 S.W. FIFTH AVENUE,  PORTLAND,  OREGON, ON WEDNESDAY,
DECEMBER 15, 1999, AT 10 A.M.  PACIFIC TIME, AND ANY ADJOURNMENTS  THEREOF,  FOR
THE PURPOSES SET FORTH IN THE ACCOMPANYING NOTICE OF MEETING.

        The  solicitation of proxies will be made primarily by mail, but proxies
may also be solicited  personally  and by telegram or telephone by directors and
officers of the Corporation  without additional  compensation for such services.
Brokers and other  persons  holding  shares in their  names,  or in the names of
nominees,  will be  reimbursed  for  their  reasonable  expenses  in  forwarding
soliciting materials to their principals and in obtaining  authorization for the
execution of proxies.  All costs of  solicitation  of proxies by the Corporation
will be borne by the Corporation.  This Circular and accompanying  form of proxy
will be mailed to shareholders beginning approximately November 5, 1999.

        All dollar  amounts  included in this  Circular are  expressed in United
States  dollars.  Amounts  originally  expressed  in Canadian  dollars have been
converted  using the  applicable  spot  exchange  rate (as quoted by the Federal
Reserve Bank of New York for the New York  Interbank  Market) as of November --,
1999, or, where appropriate,  the applicable date of the specific transaction or
payment described.  THE EXCHANGE RATE FOR CONVERTING  CANADIAN DOLLARS INTO U.S.
DOLLARS AT NOVEMBER --, 1999, WAS ------.

                      APPOINTMENT AND REVOCATION OF PROXIES

        The persons  designated  in the enclosed  form of proxy are directors of
the Corporation.  A SHAREHOLDER HAS THE RIGHT TO APPOINT A PERSON OTHER THAN THE
PERSONS  DESIGNATED IN THE ACCOMPANYING FORM OF PROXY TO REPRESENT HIM OR HER AT
THE MEETING.  THE PERSON NEED NOT BE A SHAREHOLDER.  This right may be exercised
either by inserting  in the blank space  provided the name of the other person a
shareholder  wishes to appoint or by  completing  another  proper form of proxy.
Shareholders  who wish to be  represented  at the meeting by proxy must  deposit
their form of proxy prior to 10 a.m. (Calgary time) on December 14, 1999, at the
offices of CIBC Mellon Trust Company,  Suite 600,  333-7th  Avenue SW,  Calgary,
Alberta, Canada, T2P 2Z1 (P.O. Box 2517, Calgary,  Alberta, Canada, T2P 4P4), or
deliver it to the  chairman  of the  meeting  prior to the  commencement  of the
meeting.

                                      -1-
<PAGE>

        A  shareholder  who has  given a proxy has the right to revoke it at any
time by an instrument  in writing  executed by the  shareholder  or his attorney
authorized in writing or, if the shareholder is a corporation,  by an officer or
attorney  thereof duly  authorized,  and deposited at the offices of CIBC Mellon
Trust Company, Suite 600, 333-7th Avenue SW, Calgary,  Alberta,  Canada, T2P 2Z1
(P.O. Box 2517, Calgary,  Alberta,  Canada, T2P 4P4), addressed to the Secretary
of the  Corporation,  at any  time up to and  including  the last  business  day
preceding the day of the meeting, or any adjournment thereof, at which the proxy
is to be used, or with the chairman of the meeting on the day of the meeting, or
any adjournment thereof.

                          OUTSTANDING VOTING SECURITIES

        The Corporation has three classes of securities  outstanding with voting
rights,  Common Shares (the "Common  Shares"),  Series A  Convertible  Preferred
Shares (the "Series A Shares"),  and Series B Convertible  Preferred Shares (the
"Series B  Shares").  The Series A Shares,  the Series B Shares,  and the Common
Shares  together  are referred to as the  "Shares,"  and the Series A Shares and
Series  B  Shares  are  sometimes  collectively  referred  to as the  "Preferred
Shares." On October 29, 1999, the Corporation had outstanding  6,109,026  Common
Shares,  13,333,333  Series A Shares and 2,500,000 Series B Shares.  Each Common
Share  carries  the  right to one  vote,  each  Series A Share  is  entitled  to
one-fifth  of a vote,  and each  Series B Share is  entitled  to one vote at the
meeting.  The  holders of the Common  Shares  and the  holders of the  Preferred
Shares will vote together as a single class on all matters  presented for action
at the  meeting,  except the proposed  amendment  to the  Articles  amending and
restating the terms of the Series A Shares,  as to which the Common Shares,  the
Series A Shares and the Series B Shares will each vote as a separate class.

        The  Corporation  has also reserved for issuance:  (i) 2,000,000  Common
Shares upon the exercise of share purchase warrants presently outstanding;  (ii)
143,206  Common Shares upon the conversion of  convertible  subordinated  notes;
(iii) 2,666,666  Common Shares upon the conversion of the Series A Shares;  (iv)
2,500,000  Common  Shares upon the  conversion  of the Series B Shares;  and (v)
2,369,000 Common Shares upon the exercise of stock options presently outstanding
held  by  employees,  directors,  and  officers  of,  and  consultants  to,  the
Corporation.

        Only  shareholders  of record at the close of  business  on October  29,
1999,  will be  entitled  to vote at the  meeting,  except to the extent  that a
shareholder  has  transferred  ownership  of any of his or her Common  Shares or
Preferred  Shares after the record date and the  transferee  of those shares has
produced properly endorsed share certificates or has otherwise  established that
he or she owns the shares and, in either  case,  has  requested,  not later than
December  5,  1999,  that  the  transferee's  name be  included  in the  list of
shareholders  entitled  to vote at the  meeting,  in which case such  transferee
shall be entitled to vote such shares at the meeting.

                                VOTING OF PROXIES

        When a proxy in the accompanying form is properly executed and returned,
the Common Shares or Preferred Shares  represented  thereby will be voted at the
meeting in accordance with the instructions  specified in the spaces provided in
the proxy. IF NO INSTRUCTIONS  ARE SPECIFIED,  THE SHARES WILL BE VOTED IN FAVOR
OF THE MATTERS LISTED IN THE ACCOMPANYING NOTICE OF MEETING.

                                      -2-
<PAGE>

        A quorum of shareholders  will be established at the meeting if not less
than 33-1/3% of the combined total of Common Shares and Preferred  Shares issued
and  entitled to vote at the meeting  are  present in person or  represented  by
proxy.

        A DIRECTION  TO ABSTAIN  WITH  RESPECT TO PROPOSALS 1 AND 4 SET FORTH IN
THE  ACCOMPANYING  NOTICE OF MEETING WILL BE DEEMED TO HAVE THE SAME EFFECT AS A
VOTE AGAINST THE PROPOSAL.  Brokers  holding  Shares of record for customers may
not be  entitled  to vote unless they  receive  voting  instructions  from their
customers.  "Broker  non-votes,"  which  refer to Shares as to which a broker or
other nominee has  indicated on a duly executed and returned  proxy or otherwise
advised the Corporation  that it lacks voting  authority as to any matter,  will
have no effect on the required vote on the matter.

        The enclosed  form of proxy  confers  discretionary  authority  upon the
persons  named therein with respect to any  amendments to matters  identified in
the  accompanying  Notice of Meeting and other  matters that may  properly  come
before  the  meeting.  Management  is not  aware of any  amendments  to  matters
identified  in the  Notice of  Meeting  or of any other  matters  that are to be
presented for action at the meeting.

            SHARE OWNERSHIP BY PRINCIPAL SHAREHOLDERS AND MANAGEMENT

BENEFICIAL OWNERSHIP TABLE

        The following table gives information regarding the beneficial ownership
of Common Shares as of October 29, 1999, by each of the Corporation's  directors
and nominees for director,  by certain of the Corporation's  executive officers,
and by the Corporation's present directors and executive officers as a group. In
addition,  it gives information,  including addresses,  regarding each person or
group  known  to  the  Corporation  to  own  beneficially  more  than  5% of the
outstanding Common Shares, Series A Shares or Series B Shares. Information as to
beneficial stock ownership is based on data furnished by the persons  concerning
whom such information is given. Unless otherwise indicated, all shares listed as
beneficially  owned are held with sole voting and investment  power. The numbers
in the table include Common Shares as to which a person has the right to acquire
beneficial  ownership  through the exercise or conversion  of options,  purchase
warrants or convertible securities within 60 days after October 29, 1999.

                                      -3-
<PAGE>

<TABLE>
                                           Class or    Amount and Nature
Name and Address                           Series of   of "Beneficial                   % of Common         % of Series of
of Beneficial Owner                         Shares     Ownership"(1)(2)                 Shares(1)(2)        Preferred Shares
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                        <C>            <C>                              <C>                   <C>
Joel Ackerman (3)                           ---              ---                            ---                  ---

Haywood D. Cochrane, Jr.                    ---              ---                            ---                  ---

Brandon M. Dawson                          Common         1,114,548                        17.5%                 ---
111 S.W. Fifth Ave., Ste. 1620
Portland, Oregon 97204

William DeJong                             Common            56,440                         *                    ---

Gregory J. Frazer, Ph.D.                   Common           385,671(5)                      5.9%                 ---
18531 Roscoe Blvd., Ste. 201
Northridge, California 91324

Hugh T. Hornibrook                         Common            65,000                         *                    ---

Scott E. Klein                             Common           110,715                         1.8%                 ---

Estate of Larry J. Myers (6)               Common           141,000                         2.3%                 ---

RS Investment Management Co. (4)           Common           809,800(4)                     11.7%                 ---
388 Market  Street, Ste. 200
San Francisco, California 94111

Warburg, Pincus & Co. (3)                  Common         7,166,666(3)                     54.0%                 ---
466 Lexington Avenue                       Series A      13,333,333(3)                      ---                  100%
New York, New York 10017                   Series B       2,500,000(3)                      ---                  100%

David J. Wenstrup                          Common            ---                            ---                  ---

All present directors and executive        Common         1,722,374(5)                     22.0%                 ---
officers as a group (8 persons)
</TABLE>

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

*       Less than 1% of the outstanding Common Shares.

(1)     "Beneficial ownership" is calculated in accordance with Rule 13d-3(d)(1)
        under the  Securities  Exchange  Act of 1934,  pursuant to which  Common
        Shares  as to  which  a  person  has the  right  to  acquire  beneficial
        ownership  through the  exercise  or  conversion  of  options,  purchase
        warrants  or  convertible  securities  within 60 days after  October 29,
        1999, have been included in shares deemed to be outstanding for purposes
        of computing percentage ownership by such person.

(2)     "Beneficial  ownership"  includes  Common Shares that the person has the
        right to acquire through the exercise or conversion of options, purchase
        warrants  or  convertible  securities  within 60 days after  October 29,
        1999, as follows:  Brandon M. Dawson,  249,548  shares;  William DeJong,
        40,000  shares;  Gregory  J.  Frazer,  Ph.D.,  80,000  shares;  Hugh  T.
        Hornibrook,  65,000 shares;  Scott E. Klein,  110,715  shares,  Larry J.
        Myers, 140,000

                                      -4-
<PAGE>

        shares,  Warburg,  Pincus & Co., 7,166,666 shares; and all directors and
        executive officers as a group, 545,263 shares.

(3)     Warburg,  Pincus  & Co.  is  the  general  partner  of  Warburg,  Pincus
        Ventures,  L.P.  ("Warburg"),  the record owner of  13,333,333  Series A
        Shares,  2,500,000  Series B Shares and  warrants to purchase  2,000,000
        Common Shares.  Joel Ackerman,  a general  partner of Warburg,  Pincus &
        Co.,  and  David  J.  Wenstrup,  a vice  president  of  Warburg,  Pincus
        Ventures,   LLC,  each  disclaim  beneficial  ownership  of  the  Shares
        beneficially  owned by  Warburg  except  to the  extent  of an  indirect
        pecuniary  interest  in an  indeterminate  number of such  Shares.  Each
        Series A Share is entitled to one-fifth  of a vote,  while each Series B
        Share is entitled to one vote.  The Preferred  Shares vote together with
        the Common Shares as a single class unless otherwise  required by law or
        if the Board of Directors  otherwise  determines.  The Preferred  Shares
        held by Warburg represent approximately 46% of the combined voting power
        of outstanding voting  securities.  Of the 7,166,666 Common Shares shown
        as beneficially owned by Warburg,  2,666,666 shares represent the Common
        Shares  issuable  upon  conversion  of  13,333,333  Series A Shares  and
        2,500,000 shares represent the Common Shares issuable upon conversion of
        2,500,000 Series B Shares.

(4)     Included in reliance on information contained in Schedule 13G dated July
        20,  1999,  jointly  filed  by RS  Investment  Management  Co.  LLC,  RS
        Investment Management, L.P., RS Value Group LLC, and The RS Orphan Fund,
        L.P.  RS  Investment  Management  Co. LLC is the  general  partner of RS
        Investment  Management,  L.P.  and RS  Value  Group  LLC is the  general
        partner of The RS Orphan Fund, L.P. RS Investment Management Co. LLC and
        RS Investment  Management,  L.P.  reported shared voting and dispositive
        power as to the  indicated  number of shares,  while RS Value  Group LLC
        reported  shared voting and dispositive  power as to 802,300 shares,  or
        13.1% of the  outstanding  Common Shares,  and The RS Orphan Fund,  L.P.
        reported  shared voting and dispositive  power as to 630,300 shares,  or
        10.3% of the outstanding Common Shares.

(5)     Includes  44,018  Common  Shares and  options to acquire  20,000  Common
        Shares  exercisable  within 60 days  after  October  29,  1999,  held by
        Carissa Bennett, Gregory J. Frazer's wife.

(6)     Mr. Myers died on August 27, 1999.

SECTION 16(A) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

        Section 16(a) of the Securities  Exchange Act of 1934 ("Section  16(a)")
requires  that reports of  beneficial  ownership of Common Shares and changes in
such ownership be filed with the Securities and Exchange  Commission  ("SEC") by
"reporting  persons,"  including  directors,  executive  officers,  and  certain
holders of more than 10% of the outstanding  Common Shares. To the Corporation's
knowledge,   all  Section  16(a)  reporting  requirements  applicable  to  known
reporting  persons were complied with for transactions and stock holdings during
the fiscal year ended July 31, 1999.

                                      -5-
<PAGE>

                             EXECUTIVE COMPENSATION

SUMMARY COMPENSATION TABLE

        The following table sets forth for the years indicated the  compensation
awarded or paid to, or earned by, the Corporation's  chief executive officer and
the Corporation's  other executive officers whose salary level and bonus for the
fiscal year ended July 31, 1999, exceeded $100,000.

<TABLE>
                                                                                Long-Term
                                                                               Compensation
                                                                                  Awards
                                                 Annual Compensation              ------
                                                 -------------------        Number of Shares        All Other
Name and Principal Position         Year(1)      Salary        Bonus       Underlying Options    Compensation
- ---------------------------         -------      ------        -----       ------------------    ------------

<S>                                 <C>           <C>          <C>               <C>               <C>
Brandon M. Dawson                   1999          $195,000       ---                ---            $23,529 (2)
 Chairman and Chief                 1998           167,917       ---             530,000              ---
 Executive Officer                  1997           130,000       ---                ---               ---

Scott E. Klein                      1999           127,885     $65,625           375,000              ---
 President and Chief
 Operating Officer

Larry J. Myers                      1999           115,500      30,000           100,000              ---
 Executive Vice President-          1998            78,211        ---             34,000              ---
 Business Development               1997            10,774        ---              6,000              ---
</TABLE>

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

(1)     Mr. Klein joined the  Corporation  in November 1998 and Mr. Myers in May
        1997.

(2)     Represents  the premiums  paid by the  Corporation  in fiscal 1999 for a
        split-dollar  life  insurance  policy.  See  "Employment  and Consulting
        Agreements."

        In addition,  two other executive  officers of the Corporation were paid
an aggregate of $173,446 in cash compensation during the 1999 fiscal year.

OPTION GRANTS

        During the fiscal  year ended July 31,  1999,  the  Corporation  granted
stock options to employees and directors  under its Second  Amended and Restated
Stock Award Plan (the "Stock Award Plan"). Options are granted at the discretion
of the Board of Directors. The options are not transferable or assignable.

        The following table sets forth certain information  concerning grants of
options to purchase Common Shares to individuals who were directors or executive
officers of the Corporation during the fiscal year ended July 31, 1999:

                                      -6-
<PAGE>


                              OPTION GRANTS IN LAST FISCAL YEAR

<TABLE>
                                                          Percentage of Total
                                     Number of Shares     Options Granted to                         Price
                                     Underlying           Employees in Fiscal     Exercise Price     Range of       Expiration
               Name                  Options Granted      Year                    ($/share)          Shares (6)        Date
               ----                  ---------------      ----                    ---------          ------            ----
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                       <C>                  <C>                 <C>             <C>                <C>
Joel Ackerman                              --                 --                     --                 --               --

Haywood D. Cochrane, Jr.                  50,000(1)            7%                  $4.22          $4.19-4.88          06/09/09

Brandon M. Dawson                          --                 --                     --                 --               --

William DeJong                             --                 --                     --                 --               --

Gregory J. Frazer, Ph.D.                   --                 --                     --                 --               --

Douglas F. Good                           15,000(2)            2%                   6.75           4.63-6.75          10/19/08

Hugh T. Hornibrook                         --                 --                     --                 --               --

Scott E. Klein                           300,000(3)           45%                   5.88           4.50-6.19          11/01/08
                                          75,000(4)           11%                   4.22           4.19-4.88          06/14/09

Edwin J. Kawasaki                          --                 --                     --                 --               --

Larry J. Myers                           100,000(5)           15%                   5.88           4.63-5.19          08/27/02
</TABLE>

- ----------

(1)     Vests in three equal annual  installments  beginning one year  following
        the date of grant.

(2)     Exercisable in full.

(3)     Exercisable as to 50,000 Common Shares  immediately  following grant and
        an additional  16,667 Common Shares as of the first day of each calendar
        quarter beginning April 1, 1999. The options will become  exercisable in
        full  in  the  event  that,   following  a  change  in  control  of  the
        Corporation,  Mr.  Klein's  employment is terminated by the  Corporation
        without  cause,  or he  experiences  a  material  demotion  in status or
        position or a material  change in his duties that is  inconsistent  with
        his  position at the  Corporation,  his base  salary is reduced,  or his
        participation in the Corporation's  compensation  plans is not continued
        on a level comparable with other key executives.  A change in control of
        the  Corporation  will be  deemed  to  occur  if (i) a  person  acquires
        beneficial  ownership of 50% or more of the combined voting power of the
        Corporation,  with certain exceptions,  (ii) the incumbent directors (or
        nominees  approved by a majority of the incumbent  directors,  including
        subsequently approved directors) cease to constitute at least a majority
        of the directors of the Corporation, or (iii) a reorganization,  merger,
        or consolidation  or sale of all or substantially  all the assets of the
        Corporation, with certain exceptions, is consummated.

(4)     Vests over 3-1/2 years in equal quarterly installments beginning July 1,
        1999.

(5)     Due to the death of Mr.  Myers on  August  27,  1999,  the  options  are
        exercisable in full until August 27, 2002.

(6)     Represents  the high and low per share sale prices of the Common  Shares
        on the  American  Stock  Exchange  ("AMEX")  during  the  30-day  period
        preceding the date of the option grant.

                                      -7-
<PAGE>

OPTION EXERCISES AND FISCAL YEAR-END VALUES

        The following  table sets forth  certain  information  regarding  option
exercises  during the fiscal year ended July 31, 1999,  and the fiscal  year-end
value of unexercised options held by individuals who were directors or executive
officers of the Corporation during the 1999 fiscal year:

<TABLE>
                  AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR-END OPTION VALUES

                             Shares                       Number of Securities             Value of Unexercised
                             Acquired                    Underlying Unexercised           In-the-Money Options at
                                on         Value        Options at July 31, 1999             July 31, 1999(1)
           Name              Exercise    Realized     Exercisable     Unexercisable     Exercisable    Unexercisable
           ----              --------    --------     -----------     -------------     -----------    -------------
<S>                            <C>         <C>          <C>              <C>             <C>               <C>
Joel Ackerman                   ---         ---           ---              ---              ---             ---

Haywood D. Cochrane, Jr.        ---         ---           ---             50,000            ---            $1,500

Brandon M. Dawson               ---         ---         173,750          341,250         $177,000           ---

William DeJong                  ---         ---          40,000            ---             12,600           ---

Gregory J. Frazer, Ph.D.        ---         ---          80,000            ---              ---             ---

Douglas F. Good                 ---         ---          40,000            ---              ---             ---

Hugh T. Hornibrook              ---         ---          65,000            ---              ---             ---

Scott E. Klein                  ---         ---          88,691          286,309              161           2,089

Edwin J. Kawasaki               ---         ---          87,500          142,500            ---             ---

Larry J. Myers                  ---         ---          75,000           65,000            ---             ---
</TABLE>

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

(1)     The value shown was  calculated  based on the excess of the closing sale
        price of the Common Shares  reported on AMEX on July 30, 1999,  over the
        per share exercise price of the unexercised in-the-money options.

EMPLOYMENT AND CONSULTING AGREEMENTS

        In late 1997,  the Company  entered into an  employment  agreement  with
Brandon M. Dawson,  its Chairman and Chief  Executive  Officer.  The term of the
agreement expires on December 24, 2001, subject to automatic one-year extensions
annually  unless  either  party  gives  six  months'  prior  written  notice  of
non-extension.  The  agreement  establishes  an annual base salary of  $195,000,
subject to such increases  (but not  decreases) as are  determined  from time to
time by the Board or a  compensation  committee  designated  by the  Board.  The
agreement  provides for an annual  incentive bonus in an amount to be determined
by the Board up to 100% of Mr.  Dawson's base salary.  Under the agreement,  Mr.
Dawson is entitled to  participate  in all of the Company's  compensation  plans
covering key executive and managerial  employees,  as well as reimbursement  for
the lease of an automobile up to $12,000 per year. The Company has also provided
Mr. Dawson with an equity  split-dollar life insurance policy with a face amount
of $2,000,000,  provided that the premiums paid by the Company per year will not
exceed $20,000, to be recovered from the death benefits, surrender value or loan
proceeds payable on the policy.

        The employment agreement includes an agreement on the part of Mr. Dawson
not to compete with the Company for a period of three years after his employment
with the Company is  terminated.  If Mr.  Dawson's  employment  is terminated by
reason of death,  the Company will pay to his personal  representative  his base
salary through the date of death,  together with any accrued benefits (including
death  benefits)  to which  he is  entitled  under  the  terms of the

                                      -8-
<PAGE>

Company's  compensation  plans. In the event of Mr. Dawson's  termination due to
disability,  he will be  entitled  to  receive  his base  salary  reduced by any
benefits paid under the Company's group long-term  disability insurance plan for
the remaining term of the agreement and the portion of his annual bonus relating
to the period before his disability. If Mr. Dawson's employment is terminated by
the Company for "cause" or he  terminates  his  employment  voluntarily  without
"good  reason," the Company will pay his base salary  through the effective date
of termination, together with any accrued benefits to which he is entitled under
the terms of the Company's  compensation plans. Cause includes a material act of
fraud,   dishonesty  or  moral   turpitude,   gross  negligence  or  intentional
misconduct.  Good reason includes a material  demotion in Mr. Dawson's status or
position,  a  material  change  in his  duties  that is  inconsistent  with  his
position,  a  reduction  in his  base  salary,  or a  failure  to  continue  his
participation in the Company's  compensation  plans on terms comparable to other
key executives.  If Mr. Dawson's employment is terminated by the Company without
cause or by Mr.  Dawson with good  reason,  the Company will pay his base salary
through the termination date, plus an amount of severance pay equal to two times
the sum of his base salary and his average annual bonus for the prior two fiscal
years payable in 24 monthly  installments.  In addition,  upon such  termination
without  cause  or  with  good  reason,   the  Company  will  afford   continued
participation  in the Company's  compensation  plans (or, if not permitted under
the general provisions of any such plan, will provide a substantially equivalent
benefit) for two additional years.

        Effective  November  1,  1998,  the  Company  entered  into a  four-year
employment  agreement  with Scott E. Klein,  its President  and Chief  Operating
Officer. The agreement establishes an annual base salary of $175,000, subject to
such increases  (but not  decreases) as are determined  from time to time by the
Board  or a  compensation  committee  designated  by the  Board.  The  agreement
provides for an initial  bonus of $87,500 for  services  performed in the fiscal
year ended July 31, 1999, and an annual  incentive bonus thereafter in an amount
to be  determined by the Board up to 50% of Mr.  Klein's base salary.  Under the
agreement,  Mr.  Klein  is  entitled  to  participate  in all  of the  Company's
compensation plans covering key executive and managerial employees.

        The employment  agreement includes an agreement on the part of Mr. Klein
not to compete  with the Company  for a period of one year after his  employment
with the Company is  terminated.  If Mr.  Klein's  employment  is  terminated by
reason of death,  the Company will pay to his personal  representative  his base
salary through the date of death,  together with any accrued benefits (including
death  benefits)  to which  he is  entitled  under  the  terms of the  Company's
compensation  plans. In the event of Mr. Klein's  termination due to disability,
he will be  entitled to receive his base  salary  reduced by any  benefits  paid
under the Company's group long-term  disability insurance plan for the remaining
term of the agreement.  If Mr.  Klein's  employment is terminated by the Company
for cause or he terminates his employment  voluntarily  without good reason, the
Company  will pay his base salary  through the  effective  date of  termination,
together  with any accrued  benefits to which he is entitled  under the terms of
the  Company's  compensation  plans.  Cause  includes a  material  act of fraud,
dishonesty or moral turpitude, gross negligence or intentional misconduct.  Good
reason  includes  a material  demotion  in Mr.  Klein's  status or  position,  a
material  change  in his  duties  that is  inconsistent  with  his  position,  a
reduction in his base salary,  or a failure to continue his participation in the
Company's compensation plans on terms comparable to other key executives. If Mr.
Klein's  employment is  terminated by the

                                      -9-
<PAGE>

Company without cause or by Mr. Klein with good reason, the Company will pay his
base salary through the termination  date, plus an amount of severance pay equal
to his base salary.

        Effective  January  1,  1997,  the  Company  entered  into  a  five-year
consulting agreement with Hugh T. Hornibrook,  a director of the Company,  under
which the Company  pays Mr.  Hornibrook  a retainer of  [CDN$100]  per month and
[CDN$125]  per hour for  consulting  services on an as-needed  basis.  The total
amount paid to Mr. Hornibrook in fiscal 1999 was [CDN $1,200].

COMPENSATION OF DIRECTORS

        The  non-employee  directors of the Corporation  receive a fee of $1,000
for  each  board  or  committee   meeting   attended  and  are   reimbursed  for
out-of-pocket  and travel  expenses  incurred in attending  board and  committee
meetings.  The Corporation has no other standard  arrangement  pursuant to which
directors  are  compensated  by the  Corporation  for  their  services  in their
capacity as directors.  The  Corporation may from time to time, as it has in the
past,  grant stock options to directors in accordance with the policies of AMEX,
the Securities and Exchange Commission,  and the securities laws and regulations
of the jurisdictions where the directors reside. Options granted during the 1999
fiscal year are included in the table under "Option Grants" above.

DIRECTORS AND OFFICERS LIABILITY INSURANCE COVERAGE

        The Corporation  maintains insurance for the protection of its directors
and officers against liabilities incurred in such capacity with a coverage limit
of $2,000,000, subject to a deductible of $50,000 per claim. The premium paid by
the Corporation for the annual policy period ended October 31, 1999, was $39,000
for the directors and officers as a group.

                 INTERESTS OF INSIDERS IN MATERIAL TRANSACTIONS

        Gregory J. Frazer,  Ph.D.,  Vice  President-Business  Development  and a
director of the  Corporation,  and his wife,  Carissa  Bennett,  have the right,
until  September 30, 2001, to require the  Corporation to redeem an aggregate of
1,680 of their Common  Shares as of the last day of each  calendar  quarter at a
price of $8.35 per share. The redemption  rights are noncumulative and expire if
not exercised as of the end of any calendar quarter as to such quarter. Pursuant
to such  redemption  rights,  the  Corporation  redeemed during the fiscal years
ended  July  31,  1999 and  1998,  a total of 6,720  and  1,680  Common  Shares,
respectively,  from Ms. Bennett and Mr. Frazer for  consideration of $56,292 and
$14,028, respectively.

        During 1998,  the  Corporation  acquired  three  hearing care centers in
California in which Mr. Frazer and Ms. Bennett were part-owners.  Mr. Frazer and
Ms. Bennett received $242,179 of the total purchase price of $542,268. They also
received  $80,520 in payment for covenants not to compete.  In January 1999, the
Corporation  issued a three-year  promissory note to Mr. Frazer in the principal
amount of $102,000 and payable in equal  quarterly  installments  in  connection
with purchase price  adjustments  for hearing care centers that were  previously
acquired from Mr. Frazer. The Corporation also entered into expanded non-compete
agreements  with Mr. Frazer and Ms.  Bennett that pay Mr. Frazer and Ms. Bennett
$6,303 and $4,455 per month, respectively, until September 2001.

                                      -10-
<PAGE>

        William  DeJong,  a  director  of the  Corporation,  is a partner in the
Calgary, Alberta law firm of Ballem MacInnes. During the fiscal years ended July
31, 1999 and 1998,  total fees,  disbursements  and government sales tax paid to
Ballem  MacInnes  by the  Corporation  for  legal  services  were  approximately
[CDN$18,076] and $196,000, respectively.

        Under a  settlement  agreement  between  the  Corporation  and  Roger W.
Larose,  formerly the  Corporation's  chief operating  officer,  the Corporation
agreed to pay the exercise  price of 40,000  options to purchase  Common  Shares
held by Mr. Larose.  On April 1, 1996, Mr. Larose  exercised  options for 20,000
Common  Shares at $1.40 per share and  Douglas F. Good,  as an advance to and on
behalf  of  the  Corporation,   paid  the  exercise  price  of  $28,048  to  the
Corporation.  On  September  30,  1996,  Mr.  Larose  exercised  options  for an
additional  20,000  Common Shares at $1.40 per share and Mr. Good, as an advance
to and on behalf of the  Corporation,  paid the exercise price of $27,900 to the
Corporation.

        Brandon M. Dawson subsequently executed promissory notes in favor of Mr.
Good equal to the amounts  advanced by Mr. Good in  connection  with the options
exercised by Mr.  Larose,  and Mr.  Dawson was  substituted  for Mr. Good as the
obligee with respect to such advances.  Interest on the advances  accrued at the
rate of 9% per annum. The advances were repaid to Mr. Good by the Corporation on
December  26,  1997,  along  with  interest  in the  amount of  $7,147,  thereby
satisfying Mr. Dawson's obligations to Mr. Good.

        On  October 5,  1997,  the  Corporation  loaned  Mr.  Dawson  $85,000 in
connection with the purchase of his residence.  The loan was repaid on April 10,
1998, along with interest at 10% per annum in the amount of $4,308.

        On December 26, 1997, the Corporation loaned Mr. Dawson $30,639 in order
to allow Mr.  Dawson to repay an advance  from Mr. Good in  connection  with the
exercise by Mr.  Dawson of options to purchase  20,000 Common Shares on April 1,
1996. Mr. Dawson repaid the loan on March 30, 1999, along with interest at 7.75%
per annum in the amount of $4,287. On March 19, 1998, the Corporation loaned Mr.
Dawson $34,298 in order to pay taxes incurred as a result of Mr.  Dawson's April
1996 option  exercise.  The loan bears interest at 7.75% per annum and is due on
December 31, 2000.

        On May 8, 1997, Mr. Dawson exercised options for 50,000 Common Shares at
$1.35 per share in order to allow  options  for  Common  Shares to be granted to
other employees.  In connection with such exercise,  the Corporation  loaned Mr.
Dawson $67,500 to pay the aggregate exercise price of the options.  The loan was
repaid on July 6, 1999,  along with  interest  at 10% per annum in the amount of
$7,730.  On April 24, 1998,  the  Corporation  loaned Mr.  Dawson an  additional
$91,000  in order to pay taxes  incurred  as a result of Mr.  Dawson's  May 1997
option  exercise.  The loan was repaid on July 6, 1999,  along with  interest at
7.75% in the amount of $8,347.

        From January 1, 1997,  until  September 30, 1998,  the Company  retained
NeuroDynamic  Systems,  Inc.,  at the  rate of  $6,000  per  month,  to  provide
consulting services in connection with the Company's Canadian operations and the
development of a training  program for  audiologists.  Gene K. Balzer,  Ph.D., a
director of the Company until December  1997, is president and sole  shareholder
of NeuroDynamic Systems, Inc.

                                      -11-
<PAGE>

        On December 8, 1998, the  Corporation  loaned Scott E. Klein,  President
and Chief Operating Officer of the Corporation,  $100,000 in connection with the
purchase of his primary residence in Portland,  Oregon.  The loan, which was due
on the earlier of the sale of Mr. Klein's  residence in Minnesota or October 31,
1999,  was repaid on June 7, 1999,  along with  interest  at 8% in the amount of
$4,000.

        On July 21, 1999, Cindy Dawson-Austin,  mother of Mr. Dawson, loaned the
Corporation  $500,000  for  working  capital.  The loan was due and  payable  on
October 18, 1999, and bears interest at 12%.

        On October 1, 1999, the  Corporation  consummated  the sale of 2,500,000
Series B Shares  to  Warburg  for  $10,000,000  in cash.  Under the terms of the
purchase  agreement  for the Series B Shares,  Warburg is entitled to  designate
three  nominees for election as directors.  See "Item 2. Election of Directors."
Cash dividends will accrue on the Series B Shares at an annual rate of 8 percent
of the  conversion  price then in effect until  November 1, 2004,  increasing in
steps  thereafter to 18 percent  beginning  November 1, 2006,  provided that the
Corporation has met specified quarterly earnings targets. If the Corporation has
not met the earnings  targets by July 31, 2002,  dividends will not accrue or be
payable  on the Series B Shares.  Upon  conversion  of the Series B Shares,  any
accumulated dividends will be forfeited.

        The Series B Shares are initially  convertible  on a  one-for-one  basis
into  2,500,000  Common  Shares at a  conversion  price of $4.00 per share.  The
conversion  rate is subject to  increase  to the extent  that the  Corporation's
receivables as of July 31, 1999, that are collected by July 31, 2000, total less
than $4,736,000,  as well as to adjustments for stock  dividends,  stock splits,
recapitalizations,  and other similar events. In addition, until the Corporation
attains specified quarterly earnings targets,  the conversion rate will increase
beginning October 31, 2000, such that  approximately  200,000  additional Common
Shares would be issuable  upon  conversion at that date with respect to the four
fiscal  quarters then ended.  Additional  adjustments  will be made each quarter
thereafter as long as the earnings targets have not been met. The amount of such
quarterly  adjustments  will be based on a factor of 2 percent  of the  original
purchase  price plus the sum of all prior  adjustments  until  November 1, 2004,
increasing in steps thereafter to 4.5 percent  beginning  November 1, 2006. Once
the  Corporation  has met the specified  earnings  targets for four  consecutive
fiscal quarters, no further adjustments in the conversion rate will be made. The
Series B Shares  are  subject  to  mandatory  conversion  at the  option  of the
Corporation if certain share price and earnings targets are met.

        In  connection  with the sale,  the  Corporation  agreed  to reduce  the
exercise price of outstanding  warrants  entitling Warburg to purchase 2,000,000
Common Shares from $12.00 to $6.75 per share,  to extend the exercise  period to
October 1, 2004,  and to remove the  limitation on the number of shares that may
be issued  upon a  cashless  exercise.  The  Corporation  also  agreed to submit
certain  amendments  to the terms of the  outstanding  Series A Shares  owned by
Warburg for consideration and approval by the Corporation's  shareholders at the
1999 annual  meeting of  shareholders.  See "Item 4.  Approval of  Amendment  to
Articles Amending and Restating Terms of Series A Convertible Preferred Shares."

                                      -12-
<PAGE>

                               1999 ANNUAL REPORT

        The  Corporation's  annual  report to  shareholders  for the fiscal year
ended July 31, 1999,  including financial  statements and other information with
respect to the Corporation,  has been mailed to shareholders with this Circular.
Additional  copies of the  annual  report  may be  obtained  by  writing  to the
Corporation.

                     AUDITORS, TRANSFER AGENT AND REGISTRAR

        The auditors of the  Corporation  are KPMG LLP, 1211 S.W.  Fifth Avenue,
Suite 2000, Portland, Oregon 97204. The co-registrars and co-transfer agents for
the Common Shares are CIBC Mellon Trust Company,  Suite 600,  333-7th Avenue SW,
Calgary,  Alberta,  Canada T2P 2Z1, and ChaseMellon Shareholder Services L.L.C.,
520 Pike Street, Suite 1220, Seattle, Washington 98101.

                     PARTICULARS OF MATTERS TO BE ACTED UPON

        To the knowledge of the Board of Directors, the only matters to be acted
upon at the annual  meeting  are those set forth in the  accompanying  Notice of
Meeting  relating to fixing the number of directors to be elected,  the election
of directors, the appointment of auditors, an amendment to the Articles amending
and restating the terms of the Series A Shares, and the receipt of the financial
statements for fiscal 1999.

1.      FIXING NUMBER OF DIRECTORS

        Under the Articles of Continuance of the Corporation  (the  "Articles"),
the Board of  Directors  may  consist  of a minimum of three and a maximum of 11
directors. The Board of Directors may, between annual general meetings,  appoint
one or more additional directors to serve until the next annual general meeting,
provided that the number of additional directors may not exceed one-third of the
number of directors  elected at the most recent annual  general  meeting and the
total number of directors may not exceed 11.

        At  present,  the Board of  Directors  consists of seven  directors.  As
discussed below, the Board of Directors has nominated eight persons for election
as directors  at the meeting.  Accordingly,  the  shareholders  will be asked to
consider and, if thought fit, to pass the following resolution:

               "BE IT RESOLVED  THAT the number of directors of the  Corporation
        be and the same is hereby  fixed at eight  directors  until such time as
        the directors  determine by resolution to appoint one or more additional
        directors in accordance with the Corporation's Articles."

        The  foregoing  resolution  will be adopted if approved by a majority of
the votes cast on this motion by the  shareholders  at the meeting.  THE PERSONS
DESIGNATED IN THE ENCLOSED FORM OF PROXY, UNLESS OTHERWISE INSTRUCTED, INTEND TO
VOTE FOR THE RESOLUTION FIXING THE NUMBER OF DIRECTORS.

                                      -13-
<PAGE>

2.      ELECTION OF DIRECTORS

        The Board of  Directors  has  nominated  eight  persons for  election as
directors  to serve  until the next  annual  general  meeting  and  until  their
successors  are elected and  qualified.  Seven of the  nominees  for election as
directors are members of the present Board.  Scott E. Klein,  the  Corporation's
President and Chief  Operating  Officer,  has been nominated for election at the
1999 meeting.

        Joel  Ackerman was appointed to the Board in December  1997,  Haywood D.
Cochrane,  Jr., was nominated for election at the 1998 annual  general  meeting,
and David J.  Wenstrup was  appointed to the Board in October 1999, in each case
at the request of Warburg. See "Interests of Insiders in Material Transactions."

        A nominee  will be elected if the nominee  receives a  plurality  of the
votes cast by the Common Shares entitled to vote in the election,  provided that
a quorum is present at the meeting.  UNLESS  AUTHORITY TO VOTE FOR A DIRECTOR OR
DIRECTORS IS WITHHELD,  THE ACCOMPANYING PROXY WILL BE VOTED FOR THE ELECTION OF
THE  NOMINEES  NAMED  BELOW.  If for some  unforeseen  reason a nominee  becomes
unavailable  to serve as a  director,  the Board of  Directors  may  designate a
substitute nominee. In that case, the persons named as proxies will vote for the
substitute nominee designated by the Board unless otherwise instructed.

        The following table sets forth  information  with respect to each person
nominated for election as a director of the Corporation,  including their names,
municipality  of  residence,  ages as of October 29, 1999,  business  experience
during the past five years, and year of appointment as a director.  There are no
family relationships among the Corporation's  directors,  nominees for director,
or officers.  The Corporation has three executive  officers,  Brandon M. Dawson,
Gregory J. Frazer, Ph.D., and Scott E. Klein, each of whom is also a nominee for
election as a director.

<TABLE>
Name and                                                                       Director
Municipality of Residence     Age     Principal Occupation(*)                    Since
- -------------------------     ---     -----------------------                    -----

<S>                           <C>    <C>                                         <C>
Joel Ackerman                 35     Managing Director of E. M. Warburg,         1997
 New York, New York                  Pincus & Co., L.L.C., a specialized
                                     financial services organization.

Haywood D. Cochrane, Jr.      51     President and Chief Executive Officer       1998
 Nashville, Tennessee                and a director of Meridian Corporate
                                     Healthcare,   Inc.,  a   specialized
                                     medical management company.

Brandon M. Dawson             31     Chairman and Chief Executive Officer        1995
 Gresham, Oregon                     of the Corporation.

Gregory J. Frazer, Ph.D.      47     Vice President-Business Development         1996
 Northridge, California              of the Corporation

                                      -14-
<PAGE>

William DeJong                41     Partner in the law firm of                  1994
 Calgary, Alberta                    Ballem MacInnes.

Hugh T. Hornibrook            50     Acquisition consultant.                     1996
 Vancouver, British Columbia

Scott E. Klein                41     President and Chief Operating Officer       ---
 Clackamas, Oregon                   of the Corporation.

David J. Wenstrup             35     Vice President of E. M. Warburg,            1999
 New York, New York                  Pincus & Co., L.L.C., a specialized
                                     financial services organization.
</TABLE>

(*)     During the past five years,  the principal  occupation and employment of
        each  director  has been in the  capacity  set  forth  above  except  as
        follows:

        (a)    Mr.  Ackerman has been employed by E. M.  Warburg,  Pincus & Co.,
               L.L.C.,  since 1993. From 1990 to 1993, Mr. Ackerman served as an
               associate at Mercer Consulting, a strategic management consulting
               company. Mr. Ackerman is a director of Phycor, Inc.

        (b)    Mr.  Cochrane has held his present  position since February 1997.
               He was Executive  Vice  President,  Chief  Financial  Officer and
               Treasurer of Laboratory  Corporation  of America  Holdings,  Inc.
               ("LabCorp"), from April 1995 to November 1996 and a consultant to
               LabCorp from  November 1996 until  February  1997.  Mr.  Cochrane
               served from June 1994 to April 1995 as Vice  Chairman of National
               Health Laboratories, Inc. ("NHL"), following NHL's acquisition of
               Allied Clinical Laboratories,  Inc. ("Allied").  Mr. Cochrane was
               President  and  Chief  Executive   Officer  of  Allied  from  its
               formation in 1989 until its  acquisition by NHL in June 1994. NHL
               was acquired by LabCorp in April 1995. Mr. Cochrane is a director
               of JDN Realty Corporation and Unilab Corporation.

        (c)    Mr. Dawson has served as President and Chief Executive Officer of
               the  Corporation  since December 1995.  From May 1992 to December
               1995,  he was  director of U.S.  sales for Starkey  Laboratories,
               Inc., a multi-national manufacturer,  distributor and marketer of
               custom  "in-the-ear"  hearing instruments and related hearing and
               diagnostic equipment.

        (d)    Mr. DeJong joined the law firm of Ballem MacInnes in 1987.

        (e)    Mr. Frazer has served as Vice  President-Business  Development of
               the Corporation since October 1996, when the Corporation acquired
               11 audiology based hearing clinics which were among 22 clinics in
               Southern  California  of which  Mr.  Frazer  was part  owner  and
               operator.   The  Corporation  has  since  acquired  nine  of  the
               remaining 11 clinics. Mr. Frazer has spent his entire career as a
               hearing care  professional  since  receiving his doctoral  degree
               from Wayne State School of Medicine in 1981.

                                      -15-
<PAGE>

        (f)    Mr. Hornibrook served as Vice President-Corporate  Development of
               the  Corporation  from April 1996 until January  1997.  From July
               1994 to  April  1996,  and  since  January  1997,  he has been an
               independent  business   consultant.   Prior  to  July  1994,  Mr.
               Hornibrook  served as director of corporate  development  for The
               Loewen Group Inc., a  consolidator  and operator of funeral homes
               and cemeteries throughout North America.

        (g)    Mr. Klein has served as President and Chief Operating  Officer of
               the Corporation  since June 1999 and was Executive Vice President
               and Chief Operating  Officer from November 1998 to June 1999. Mr.
               Klein was Senior Vice  President of Operations  (Eastern Zone) of
               Hollywood  Entertainment  Corporation  from April 1997 to October
               1998. He previously  held various  senior  management  positions,
               including  Senior  Vice  President  of the  Retail  Division,  at
               NordicTrack, Inc., from August 1993 until April 1997.

        (h)    Mr.  Wenstrup has been employed by E. M.  Warburg,  Pincus & Co.,
               L.L.C.,  since 1997.  From August 1991 to May 1997, Mr.  Wenstrup
               served as an associate at The Boston  Consulting  Group,  Inc., a
               strategic management consulting company.

DIRECTORS' MEETINGS AND BOARD COMMITTEES

        During the fiscal year ended July 31, 1999,  the Board of Directors held
four  meetings.  Each  director  attended  more than 75% of the aggregate of the
total number of meetings of the Board of Directors  and of any  committee of the
Board on which the director served held during fiscal 1999.

        The Audit  Committee  reviews  services  provided  by the  Corporation's
independent  auditors,  makes  recommendations  concerning  their  engagement or
discharge,  and reviews with management and the independent  auditors the annual
financial statements of the Corporation,  the results of the audit, the adequacy
of internal accounting  controls,  and the quality of financial  reporting.  The
Audit  Committee met once during fiscal 1999. The members of the Audit Committee
are Messrs. Ackerman, DeJong, and Hornibrook.

        The  Corporation   presently  does  not  have  a  standing  compensation
committee  or  nominating  committee.  The  Board  of  Directors  will  consider
suggestions submitted by shareholders regarding potential nominees for director.
Any  recommendations  as to nominees  for  election  at the 2000 annual  general
meeting of  shareholders  should be submitted in writing by July 8, 2000, to the
Secretary  of the  Corporation  at its  principal  executive  offices and should
include the name, address and qualifications of each proposed nominee.

3.      APPOINTMENT OF AUDITORS

        The firm of KPMG LLP,  independent public  accountants,  has audited the
accounts of the Company since December 1996.  UNLESS OTHERWISE  INSTRUCTED,  THE
PERSONS NAMED IN THE ENCLOSED  FORM OF PROXY INTEND TO VOTE FOR THE  APPOINTMENT
OF KPMG LLP AS AUDITORS OF THE  CORPORATION TO HOLD OFFICE UNTIL THE NEXT ANNUAL
GENERAL MEETING OF  SHAREHOLDERS OR UNTIL THEIR  SUCCESSORS ARE APPOINTED AND TO
AUTHORIZE  THE  BOARD  OF  DIRECTORS  TO FIX  THE  AUDITORS'  REMUNERATION.  The
Corporation expects representatives of KPMG LLP to be present

                                      -16-
<PAGE>

at the meeting and to be  available  to respond to  appropriate  questions.  The
auditors  will have the  opportunity  to make a statement at the meeting if they
desire to do so.

4.      APPROVAL OF AMENDMENT TO ARTICLES AMENDING AND RESTATING TERMS OF SERIES
        A CONVERTIBLE PREFERRED SHARES

        For the reasons  discussed  below,  the  management  of the  Corporation
believes  it  is  in  the  best  interests  of  the  Corporation  to  amend  the
Corporation's  Articles to amend and restate the terms of the Series A Shares as
set forth in Schedule A to this Circular.  All of the 13,333,333 Series A Shares
outstanding are held by Warburg.  The Corporation  agreed to submit the proposed
amendments to the terms of the Series A Shares for approval by the Corporation's
shareholders  in  connection  with its sale of the  Series B Shares to  Warburg,
which was  completed  on  October 1, 1999.  If the  Corporation  fails to obtain
approval of the proposed  amendments by March 31, 2000,  the exercise  price for
warrants  to purchase  2,000,000  Common  Shares held by Warburg  will drop from
$6.75 to $4.00 per share. Warburg has agreed to vote the Series A Shares and the
Series B Shares in favor of the proposed amendments.

        If the  amendment to the Articles is approved,  the Series A Shares will
be converted  immediately from 13,333,333 shares into 2,666,666 shares,  and the
initial conversion price and liquidation  preference of the Series A Shares will
be changed  from $1.35 to $6.75,  and other  similar  changes  will be made,  to
correspond  to the  one-for-five  reverse  split  (consolidation)  of the Common
Shares effected in February 1998.

        In addition,  the terms of the Series A Shares will be amended to reduce
the per share market  price and net income  targets that must be met in order to
avoid specified  increases in the dividend rate on the Series A Shares beginning
January 1, 2003,  and as a condition  to  mandatory  conversion  of the Series A
Shares  into Common  Shares at the option of the  Corporation.  As amended,  the
dividend  rate  increases  will  not take  effect  and the  Corporation  will be
entitled to effect the mandatory conversion,  in whole or in part, of the Series
A Shares if the Common  Shares are  traded on the New York Stock  Exchange,  the
American  Stock  Exchange or the Nasdaq  National  Market at a Market  Price (as
therein  defined) greater than $8.00 (down from $12.00) per Common Share on each
of 10 consecutive trading days, and the Corporation  achieves average net income
before income taxes,  dividends and amortization of goodwill of $0.22 (down from
$0.35) per fully diluted Common Share  (excluding  shares issuable upon exercise
of Warburg's warrants) for the preceding three consecutive fiscal quarters.  The
proposed  amendments also provide that dividends  payable on the Series A Shares
may be paid in Common Shares,  at the option of the Corporation,  until December
24, 2002, and thereafter only in cash.

        Other  minor  revisions  to  the  terms  of the  Series  A  Shares  make
conforming  changes reflecting the issuance of the Series B Shares. The proposed
form of the amended  terms of the Series A Shares,  marked to show the  proposed
amendments, is attached as Schedule A to this Circular.

        Dividends  presently  accrue  on the  Series A  Shares  at the rate of 5
percent per annum. The Corporation has not declared or paid any dividends on the
Series A Shares since their issuance on December 24, 1997. Accumulated dividends
through October 31, 1999,  totaled

                                      -17-
<PAGE>

$1.7  million.  In the  purchase  agreement  for the  Series A  Shares,  Warburg
acknowledged that the Board of Directors does not intend to declare dividends on
the Series A Shares.  In the event of redemption or  liquidation of the Series A
Shares,  the  accumulated  dividends  would be added to the redemption  price or
liquidation preference. All accrued dividends would be forfeited upon conversion
of the Series A Shares into Common Shares.

        If the amendment to the Articles is approved by the  shareholders at the
meeting,  the amendment and  restatement  will be effected by means of filing of
Articles of Amendment with the registrar under the laws of the Yukon Territory.

        At the meeting,  the shareholders  will be asked to consider and approve
the following special resolution:

               "RESOLVED AS A SPECIAL  RESOLUTION  OF THE  CORPORATION  THAT the
        Articles of the Corporation be amended to amend and restate the terms of
        the Series A  Convertible  Preferred  Shares of the  Corporation  as set
        forth in Schedule A to the Corporation's Management Information Circular
        and  Proxy  Statement  for  the  Meeting,  including  consolidating  and
        changing  the   13,333,333   Series  A  Convertible   Preferred   Shares
        outstanding into 2,666,666 issued Series A Convertible Preferred Shares,
        and that any one director or officer of the Corporation be authorized to
        sign the Articles of Amendment reflecting such amendment and restatement
        and to file such Articles of Amendment with the appropriate governmental
        authorities, and to sign any other documents and take such other actions
        deemed necessary or proper to give effect to this resolution."

        THIS SPECIAL RESOLUTION WILL NOT TAKE EFFECT UNLESS IT IS APPROVED BY AT
LEAST  TWO-THIRDS  OF THE VOTES CAST ON THE MOTION AT THE  MEETING BY HOLDERS OF
THE COMMON SHARES, THE SERIES A SHARES, AND THE SERIES B SHARES,  EACH VOTING AS
A  SEPARATE  CLASS,  AND  CONFIRMED  BY  THE  ENDORSEMENT  BY THE  REGISTRAR  OF
CORPORATIONS  (THE  "REGISTRAR")  UNDER THE  BUSINESS  CORPORATIONS  ACT  (YUKON
TERRITORY) OF A CERTIFICATE OF AMENDMENT OF THE ARTICLES OF THE CORPORATION. THE
PERSONS DESIGNATED IN THE ENCLOSED FORM OF PROXY,  UNLESS OTHERWISE  INSTRUCTED,
INTEND  TO VOTE FOR THIS  SPECIAL  RESOLUTION  APPROVING  THE  AMENDMENT  OF THE
ARTICLES.



          THE BOARD RECOMMENDS THAT SHAREHOLDERS VOTE FOR THE PROPOSED
                AMENDMENT TO THE CORPORATION'S ARTICLES TO EFFECT
             THE AMENDMENTS TO THE SERIES A SHARES DESCRIBED ABOVE.




                  SHAREHOLDER PROPOSALS FOR 2000 ANNUAL MEETING

        Shareholder   proposals  submitted  for  inclusion  in  the  2000  proxy
materials and  consideration  at the 2000 annual general meeting of shareholders
must be received by the

                                      -18-
<PAGE>

Corporation  by July 8, 2000.  Any such  proposal  should  comply with the SEC's
rules  governing   shareholder   proposals  submitted  for  inclusion  in  proxy
materials.

        For any  proposal  that is not  submitted  for  inclusion in nest year's
proxy  materials  but  instead is sought to be  presented  directly  at the 2000
annual  general  meeting of  shareholders,  the persons named as proxies will be
able to vote in their discretion if the Corporation:  (1) receives notice of the
proposal  before the close of  business  on  September  21,  2000,  and  advises
shareholders  in the 2000 proxy materials about the nature of the matter and how
management intends to vote on such matter; or (2) has not received notice of the
proposal by the close of business on September 21, 2000.

                                    * * * * *

        The contents and the sending of this  Circular have been approved by the
Board of Directors of the Corporation.


Portland, Oregon                        BY ORDER OF THE BOARD OF DIRECTORS
November 5, 1999

                                        Brian S. Thompson
                                        Secretary


                                      -19-
<PAGE>
                                   SCHEDULE A

                                   SONUS CORP.

                              AMENDED AND RESTATED*

                 TERMS OF SERIES A CONVERTIBLE PREFERRED SHARES
                               (Without Par Value)


      1. Number and Designation.  The number of shares to constitute this series
shall be  2,666,666  and the  designation  of such shares shall be the "Series A
          ---------
Convertible Preferred Shares" (hereinafter called "this Series").  The number of
shares  constituting this Series may be decreased from time to time by action of
the Board,  but not below the number of shares of this Series then  outstanding.
All shares of this Series  shall be identical  with each other in all  respects.
The shares of this Series  shall rank senior to the common  shares (the  "Common
Shares")  of the  Corporation  and equal to the Series B  Convertible  Preferred
                               -------------------------------------------------
Shares   ("Series  B  Convertible   Shares")  as  to  cash  dividends  and  upon
- -------------------------------------------
liquidation,  as described below. Any amounts herein referencing share prices or
numbers of shares

- ----------
* Language as proposed to be amended is underscored.

                                      -1-
<PAGE>

shall be subject to  appropriate  adjustments  in the event of any stock splits,
consolidations or the like.

      2. Dividend Rights.

      (a) Subject to the  provisions of this Section 2, the holders of shares of
this Series shall be entitled to receive  when, as and if declared by the Board,
out of assets legally available therefor,  cumulative dividends ("Dividends") at
the applicable  rate per annum specified in Section 2(b) hereof from the date of
issuance and payable in accordance with Section 2(c) hereof.  Dividends shall be
cumulative  from the date of initial  issuance of the shares of this Series (the
"Initial  Issuance Date"),  whether or not earned or declared and whether or not
                                           -------------------------------------
in any  fiscal  year  there  shall be assets,  net  profits  or surplus  legally
- --------------------
available for the payment of such  Dividends.  In the event that the Board shall
declare a Dividend prior to December 24, 2002, subject to applicable  regulatory
                   --------------------------
approvals,  such  Dividend may, at the  discretion  of the Board,  be payable in
Common Shares. The number of Common Shares to be issued to the holders of shares
of this  Series upon the  payment of a Dividend  in Common  Shares  shall be the
amount of the  Dividends  payable  to such  holder  pursuant  to this  Section 2
divided by either (i) (if the Common Shares are not traded on the New York Stock
           ------
Exchange,  the American Stock Exchange or the Nasdaq National Market) U.S. $6.75
                                                                           -----
or (ii) (if the Common  Shares are  traded on the New York Stock  Exchange,  the
- --
American Stock Exchange or the Nasdaq National  Market) the average Market Price
of the Common Shares as such term is defined below for the ten (10) trading days
immediately  preceding  the Record Date as such term is defined in Section  2(c)
hereof.  Notwithstanding  the  foregoing,  after  December 24, 2002, any and all
         -----------------------------------------------------------------------
Dividends declared must be paid in cash.
- ----------------------------------------

     For all purposes hereof, the term "Market Price of the Common Shares" as of
any specified  date shall mean:  (i) if the Common Shares are listed or admitted
for trading on one or more United  States  national  securities  exchanges,  the
daily  closing  price for the Common  Shares on the  principal  exchange  in the
United States on which the Common  Shares are listed;  (ii) if the Common Shares
are not listed or admitted for trading on any United States national  securities
exchange,  the daily closing price for the Common Shares on the Nasdaq  National
or Nasdaq Small-Cap Market ("Nasdaq"); (iii) if the Common Shares are not listed
or admitted for trading on a United States  national  securities  exchange or

                                      -2-
<PAGE>

on Nasdaq,  the daily closing price of the Common Shares on the principal  stock
exchange in Canada on which the Common  Shares are listed  (expressed  in United
States  dollars  based  upon the noon  buying  rate in New York  City for  cable
transfers in Canadian  dollars as certified for customs  purposes by the Federal
Reserve Bank of New York);  (iv) if the Common Shares are not listed or admitted
to  trading  on any United  States  national  or  Canadian  national  securities
exchange or on Nasdaq,  the average of the  reported bid and asked prices on the
trading day preceding such date in the  over-the-counter  market as furnished by
the National Quotation Bureau, Inc., or, if such firm is not then engaged in the
business of reporting  such  prices,  as furnished by any member of the National
Association of Securities  Dealers,  Inc. selected by the Company; or (v) if the
Common  Shares are not publicly  traded,  the Market Price for such day shall be
the fair market value thereof  determined  jointly by the Company and the holder
of a majority of the shares of this Series then outstanding;  provided, however,
that if such parties are unable to reach agreement within a reasonable period of
time,  the Market  Price shall be  determined  in good faith by the  independent
investment  banking  firm  selected  jointly by the  Company and the holder of a
majority  of the shares of this Series then  outstanding  or, if that  selection
cannot be made  within  an  additional  15 days,  by an  independent  investment
banking firm selected by the American Arbitration Association in accordance with
its rules.

      (b) The Dividend  per share of this Series shall be computed  based upon a
rate per  annum of 5% on a base  amount of U.S.  $6.75 per share of this  Series
                                                 -----
(the "Base Amount"). The Dividend rate per annum shall be subject to increase in
the event that all of the following  conditions  (the  "Triggering  Conditions")
have not been satisfied by the dates specified  below: (i) the Common Shares are
listed on the New York Stock Exchange, the American Stock Exchange or the Nasdaq
National  Market;  (ii) the  Common  Shares  are  traded  on the New York  Stock
Exchange,  the American Stock Exchange or the Nasdaq National Market at a Market
Price  greater than U.S.  $8.00 per Common  Share on each of the 10  consecutive
                          -----
trading  days  preceding  such  date;  and (iii) the  Corporation's  net  income
(excluding  profit or loss on disposal of a  significant  part of the  Company's
assets or separate segment thereof,  gains on restructuring  payables,  gains or
losses on the  extinguishment  of debt,  expropriations  of  property,  gains or
losses  that are the

                                      -3-
<PAGE>

direct result of a major casualty, or one-time losses resulting from prohibition
under a newly-enacted law or regulation)  before income taxes,  Dividends on the
shares of this Series and on the Series B Convertible Shares and amortization of
                          --------------------------------------
goodwill and covenants not to compete for the three consecutive  fiscal quarters
preceding such date, as reported in or derived from the Corporation's  quarterly
or annual reports filed with the Securities and Exchange Commission,  shall have
averaged at least U.S. $0.22 per fully diluted Common Share per fiscal  quarter,
                       -----
provided,  however, in making such calculation,  the Common Shares issuable upon
exercise of the warrants issued to Warburg, - Pincus Ventures, L.P. ("Warburg"),
pursuant to that certain  Amended and  Restated  Warrant  Agreement  between the
                          ---------------------
Corporation and Warburg relating to warrants to purchase 2,000,000 Common Shares
                                                         ---------
(the  "Amended and Restated  Warrant  Agreement"),  shall be excluded but Common
      ---------------------
Shares  issuable upon the conversion of the shares of this Series and the Series
                                                                  --------------
B  Convertible  Shares shall not. All  references to per share amounts or prices
- ----------------------
with respect to the Triggering  Conditions shall be  appropriately  adjusted for
any subdivision,  consolidation, or reclassification of the Common Shares. Until
the Triggering Conditions have been satisfied, the Dividend rate per annum shall
be (A) 15% of the Base Amount per share of this Series from and after January 1,
2003 and payable in accordance  with Section 2(c) hereof  commencing  January 1,
2004; (B) 18% of the Base Amount per share of this Series from and after January
1, 2004 and payable in accordance with Section 2(c) hereof commencing January 1,
2005; and (C)  thereafter,  21% of the Base Amount per share of this Series from
and after  January 1, 2005 and payable in  accordance  with  Section 2(c) hereof
commencing  January  1,  2006.  Upon  the  satisfaction  of all  the  Triggering
Conditions, the Dividend per share of this Series shall be computed based upon a
rate per annum of 5% of the Base Amount.  Accruals of  Dividends  shall not bear
interest.  All  Dividends  declared  upon the  shares  of this  Series  shall be
declared pro rata per share.

      (c) The record date for the determination of the holders of shares of this
Series who shall be entitled to receive  Dividends  (the "Record Date") shall be
the first  business day of each calendar year, and only the holders of shares of
this  Series of record on the Record  Date  shall be  entitled  to receive  such
Dividends.  All Dividends payable to such holders of record shall be paid on the
tenth

                                      -4-
<PAGE>

business day following the Record Date on each issued and  outstanding  share of
this Series.

      (d) Dividends payable on shares of this Series for any period other than a
full dividend period shall be computed on the basis of a 360-day year consisting
of twelve  30-day  months.  Any  Dividend  payment made on shares of this Series
shall first be credited  against the earliest  accumulated but unpaid  Dividends
due with respect to the shares of this Series.

      (e) No dividends shall be declared or paid or set aside for payment on any
share capital of the Corporation  ranking, as to dividends,  on a parity with or
subordinate to the shares of this Series for any period unless full  accumulated
Dividends have been or contemporaneously are declared and paid or declared and a
sum sufficient for the payment  thereof set aside for such payment on the shares
of this Series for all Dividend  periods  terminating on or prior to the date of
payment of such dividends.  When Dividends are not paid in full on the shares of
this  Series and any other  preferred  shares of the  Corporation  ranking  with
respect to payment of dividends on a parity with the shares of this Series,  all
dividends  declared or paid upon shares of this Series and such other  preferred
shares  shall be  declared  and paid pro rata so that the  amount  of  dividends
declared and paid on the shares of this Series and such other  preferred  shares
shall in all cases bear to each other the same ratio that accumulated  dividends
per share (which in the case of noncumulative preferred shares shall not include
any accumulation in respect of unpaid  dividends for prior dividend  periods) on
shares of this Series and such other preferred shares bear to each other. Except
as provided in the preceding  sentence,  unless full accumulated  Dividends have
been paid or declared and a sum sufficient for the payment thereof set aside for
payment,  no dividends  (other than  dividends or  distributions  paid in Common
Shares,  or options,  warrants  or rights to  subscribe  for or purchase  Common
Shares, or, in each case, any other series of shares of the Corporation  ranking
subordinate  to the shares of this Series as to dividends and upon  liquidation)
shall be declared and paid or a sum sufficient for the payment thereof set aside
for payment or any other  distribution  declared or made upon the Common Shares,
                                                                               -
Series B  Convertible  Shares  or any other  class of shares of the  Corporation
- -----------------------------
ranking  subordinate  to or on a parity  with the  shares  of this  Series as to
dividends or upon liquidation.  No Common Shares, Series B Convertible Shares or
                                                -----------------------------
shares of

                                      -5-
<PAGE>

any other  class of shares of the  Corporation  ranking  subordinate  to or on a
parity with the shares of this Series as to dividends or upon liquidation  shall
be redeemed, purchased, retired or otherwise acquired for any consideration (and
                      ---------
no  funds  shall  be  paid to or  made  available  for a  sinking  fund  for the
redemption of any such share capital) by the  Corporation  (except by conversion
into or exchange for shares of the Corporation ranking subordinate to the shares
of this Series as to dividends  and upon  liquidation  or except with respect to
Common Shares that the Corporation  has become  obligated to redeem prior to the
issuance  of any  shares  of  this  Series  upon  the  occurrence  of  specified
circumstances)  unless, in each case, the full accumulated  Dividends shall have
been paid or declared and a sum sufficient for the payment thereof set aside for
payment. Holders of shares of this Series shall not be entitled to any dividend,
whether  payable in cash,  property or stock, in excess of the full Dividends on
such shares.

      (f) Upon  conversion  of any shares of this  Series by any holder  thereof
pursuant to Section 7 hereof,  any Dividends  accrued and payable to such holder
shall be forfeited and the Corporation shall have no further  obligation to such
holder of shares of this Series for such accumulated Dividends.

      3.  Liquidation  Rights.  (a) In the event of any voluntary or involuntary
dissolution, liquidation, or winding up of the affairs of the Corporation, after
payment  or  provision  for  payment of the debts and other  liabilities  of the
Corporation and any  preferential  amounts payable with respect to securities of
the Corporation  ranking prior to the shares of this Series  ("Senior  Preferred
Shares"),  the holders of shares of this Series shall be entitled to receive out
of the assets of the Corporation  available for  distribution  to  shareholders,
before any distribution of assets is made to holders of the Common Shares or any
other share capital of the Corporation ranking subordinate to the shares of this
Series, a liquidating distribution in an amount equal to the greater of (i) U.S.
$6.75 per share of this  Series  plus an amount  equal to any accrued and unpaid
- -----
Dividends  (including  accumulated  Dividends,  whether or not  declared) to and
including  the date of  distribution  or (ii) the  amount  distributable  to the
holders of shares of this Series as if such holders had  converted  their shares
of this Series into Common Shares pursuant to Section 7 hereof immediately prior
to such dissolution, liquidation or

                                      -6-
<PAGE>

winding  up of the  affairs  of the  Corporation  (plus  accumulated  Dividends,
whether or not declared). Amounts payable pursuant to clause (i) or (ii) of this
Section 3(a) shall be  distributed  ratably  among the holders of shares of this
Series in proportion to the number of shares of this Series held.  After payment
to the holders of shares of this Series of the full amount to which such holders
are entitled as set forth above, the holders of shares of this Series shall have
no right or claim to any of the remaining assets of the Corporation.

      (b) If upon any such dissolution, liquidation or winding up of the affairs
of the  Corporation,  the  assets  of the  Corporation  distributable  among the
holders of shares of this Series and the holders of all other  classes or series
of shares of the Corporation  ranking on a parity with the shares of this Series
shall be  insufficient  to permit the  payment to them of the full  preferential
amounts to which they are entitled, then the entire assets of the Corporation so
to be distributed  shall be  distributed  ratably among the holders of shares of
this  Series and such other  classes or series of shares of the  Corporation  in
proportion  to  the  sum  of  the  accumulated  dividends  and  the  liquidation
preferences per share.

      (c)  The  sale,   conveyance,   mortgage,   pledge  or  lease  of  all  or
substantially  all  the  assets  of the  Corporation  shall  be  deemed  to be a
liquidation,  dissolution or winding up of the  Corporation for purposes of this
Section 3.

      4. Optional Redemption.  (a) The shares of this Series may not be redeemed
before the fifth  anniversary  of the Initial  Issuance  Date.  Thereafter,  the
shares of this Series shall be redeemable  (subject to subsection 4(d) below) at
the option of the  Corporation,  in whole or in part, at the  redemption  price,
which  shall be an amount  equal to the  greater of (i) U.S.  $6.75 per share of
                                                              -----
this Series plus the amount of any  accrued  and unpaid  Dividends  per share of
this Series (including accumulated  Dividends,  whether or not declared) or (ii)
the Fair Market Value of a share of this Series (as defined below). For purposes
hereof,  the Fair Market Value shall be  determined  by a nationally  recognized
independent  investment  banking firm mutually  agreed to by the Corporation and
the holder of a majority of the shares of this Series  then  outstanding,  whose
determination shall be conclusive.

                                      -7-
<PAGE>

      (b) (i) In case the  Corporation  shall  desire to  exercise  its right to
redeem any shares of this  Series,  it shall give notice of such  redemption  to
holders of the shares of this Series to be redeemed as  hereinafter  provided in
this Section 4(b).

           (ii) Notice of redemption  shall be given to the holders of shares of
     this Series to be redeemed by mailing  such notice by  first-class  mail to
     their last  addresses as they shall appear upon the register for the shares
     of this Series not less than 120 calendar  days prior to the date fixed for
     redemption.

           (iii) Each such notice of redemption (A) shall specify the date fixed
     for redemption and the redemption  price at which shares of this Series are
     to be redeemed,  (B) shall state that payment of the  redemption  price for
     the  shares of this  Series to be  redeemed  will be made at the  principal
     executive  offices of the Corporation,  upon  presentation and surrender of
     certificates  representing such shares of this Series, and (C) if less than
     all the shares of this Series are to be redeemed,  shall specify the number
     of shares of this Series held by each  holder to be  redeemed.  In case any
     certificate  representing  shares of this  Series is to be redeemed in part
     only,  the notice of  redemption  which relates to such  certificate  shall
     state the number of shares of this Series  represented by such  certificate
     to be redeemed and shall state that on and after the redemption  date, upon
     surrender of such  certificate,  a new  certificate or  certificates  for a
     number of shares of this Series  equal to the  unredeemed  portion  thereof
     will be issued.

           (iv) If less than all the shares of this  Series are to be  redeemed,
     the  Corporation  shall effect such  redemption  pro rata among the holders
     thereof  (based on the number of shares of this  Series held on the date of
     notice of redemption).

      (c) (i) If the giving of notice of redemption shall have been completed as
provided above,  the shares of this Series specified in such notice shall become
redeemable,  and shall be  redeemed by the  Corporation  upon  presentation  and
surrender of the certificate  representing  such shares,  on the date and at the
place stated in such notice at the redemption  price, and on and after such date
fixed for redemption, notwithstanding that any certificate for shares

                                      -8-
<PAGE>

of this  Series so called for  redemption  shall not have been  surrendered  for
cancellation,  unless  there  shall  have  been  a  default  in  payment  of the
redemption  price,  all shares of this  Series  called for  redemption  shall no
longer be deemed to be  outstanding,  and all rights with respect to such shares
of this Series shall forthwith cease and terminate  except only the right of the
holders thereof to receive from the Corporation  the redemption  price,  without
interest, of the shares to be redeemed,  and such shares shall not thereafter be
transferred on the books of the  Corporation or be deemed to be outstanding  for
any purpose whatsoever.

           (ii) Upon presentation of any certificate representing shares of this
     Series only a portion of which are to be redeemed,  the  Corporation  shall
     immediately  issue,  at its  expense,  a new  certificate  or  certificates
     representing the shares of this Series not redeemed.

      (d) Except as provided in paragraph (a) above, the Corporation  shall have
no right to redeem  the  shares of this  Series.  Any  shares of this  Series so
redeemed shall be permanently retired, shall no longer be deemed outstanding and
shall not under any circumstances be reissued, and the Corporation may from time
to time take such appropriate corporate action as may be necessary to reduce the
authorized  shares of this Series  accordingly.  Nothing herein  contained shall
prevent or restrict the purchase by the Corporation, from time to time either at
public or private sale, of the whole or any part of the shares of this Series at
such price or prices as the Corporation may determine, subject to the provisions
of applicable law.

      5. No Mandatory Redemption. The shares of this Series shall not be subject
to mandatory redemption by the Corporation.

      6. Voting  Rights.  (a) Each issued and  outstanding  share of this Series
shall be entitled to the number of votes equal to the number of Common Shares of
the  Corporation  into which each such share of this Series is  convertible  (as
adjusted from time to time pursuant to Section 7(a) hereof),  at each meeting of
shareholders of the Corporation with respect to any and all matters presented to
the shareholders of the Corporation for their action or consideration. Except as
provided by law, by the  provisions of paragraph (b) below or by the  provisions
establishing any other series of preferred stock of the Corporation,  holders

                                      -9-
<PAGE>

of the shares of this Series and of any other outstanding  preferred stock shall
vote together with the holders of Common Shares as a single class.

          (b) In addition to any other rights  provided by law, the  Corporation
     shall not amend,  alter or repeal the preferences,  special rights or other
     powers  of the  shares  of  this  Series  or  any  other  provision  of the
     Corporation's  constating  documents that would adversely affect the rights
     of the holders of the shares of this Series, including, without limitation,
     any  increase in the number of shares of this  Series,  without the written
     consent or affirmative  vote of the holders of at least 66-2/3% of the then
     outstanding  aggregate  number of such  adversely  affected  shares of this
     Series, given in writing or by vote at a meeting,  consenting or voting (as
     the case may be) separately as a class. For this purpose, the authorization
     or  issuance  of any  series of  preferred  stock of the  Corporation  with
     preference  or priority  over, or being on a parity with the shares of this
     Series as to the right to receive either dividends or amounts distributable
     upon  liquidation,  dissolution or winding up of the  Corporation  shall be
     deemed to adversely affect the shares of this Series.

      7. Conversion. (a) Each share of this Series may be converted at any time,
at the option of the holder thereof,  in the manner hereinafter  provided,  into
fully-paid and  nonassessable  Common  Shares,  provided,  however,  that on any
                                                ---------  --------
redemption of any shares of this Series or any  liquidation of the  Corporation,
the right of  conversion  shall  terminate  at the close of business on the full
business  day next  preceding  the date  fixed  for such  redemption  or for the
payment of any amounts distributable on liquidation to the holders of the shares
of this Series.  The initial  conversion rate for shares of this Series shall be
one Common Share for each one share of this Series  surrendered  for conversion,
representing an initial  conversion price (for purposes of Section 7(g)) of U.S.
$6.75 per share of the Corporation's Common Shares (hereinafter, the "Conversion
- -----
Price").  The applicable  conversion rate and Conversion Price from time to time
in effect are subject to adjustment as hereinafter provided.

      (b) Whenever the Conversion Price shall be adjusted as provided in Section
7(g) hereof,  the Corporation shall forthwith file at each office designated for
the conversion of the shares of this Series,  a statement,  signed by any of the
Chairman of the Board, the President, any Vice President

                                      -10-
<PAGE>

or the  Treasurer of the  Corporation,  showing in  reasonable  detail the facts
requiring such  adjustment.  The  Corporation  shall also cause a notice setting
forth any such adjustments to be sent by mail, first class,  postage prepaid, to
each record  holder of shares of this Series at his or its address  appearing on
the stock  register.  If such notice relates to an adjustment  resulting from an
event referred to in paragraph 7(g)(vii),  such notice shall be included as part
of the  notice  required  to be mailed and  published  under the  provisions  of
paragraph 7(g)(vii) hereof.

      (c) The  right of  conversion  shall be  exercised  by the  holder  by the
surrender of the certificates representing shares of this Series to be converted
to the  Corporation  at any time during normal  business  hours at the office or
agency then  maintained  by it for the  conversion of shares of this Series (the
"Conversion  Office"),  accompanied by written notice to the Corporation of such
holder's  election to convert  and, if so  required  by the  Corporation  or any
conversion  agent,  by an instrument of transfer,  in form  satisfactory  to the
Corporation and to any conversion  agent, duly executed by the registered holder
or by such holder's duly authorized  attorney,  and transfer tax stamps or funds
therefor, if required pursuant to Section 7(k).

      (d) As promptly as  practicable  after the surrender for conversion of one
or more  certificates  representing  any  shares of this  Series  in the  manner
provided in Section  7(c) and the payment in cash of any amount  required by the
provisions  of  Section  7(k),  the  Corporation  will  deliver  or  cause to be
delivered at the Conversion Office to or upon the written order of the holder of
such shares,  a  certificate  or  certificates  representing  the number of full
Common  Shares  issuable upon such  conversion,  issued in such name or names as
such holder may direct, subject to any applicable  contractual  restrictions and
any restrictions imposed by applicable securities laws. Such conversion shall be
deemed to have been made immediately  prior to the close of business on the date
of such surrender of certificates  representing  shares of this Series in proper
order for conversion, and all rights of the holder of such shares as a holder of
such shares shall cease at such time, and the person or persons in whose name or
names the  certificates for such Common Shares are to be issued shall be treated
for all purposes as having become the record  holder or holders  thereof at such
time;  provided,  however,  that any such  surrender  on any date when the stock
       --------   -------
transfer  books  of the  Corporation  shall be  closed  shall
constitute

                                      -11-
<PAGE>

the person or persons in whose name or names the  certificates  for such  Common
Shares are to be issued as the record holder or holders thereof for all purposes
immediately  prior to the close of business on the next  succeeding day on which
such stock transfer books are opened.

      (e) Upon  conversion  in the manner  provided in this  Section 7 of only a
portion of the number of shares of this Series  represented  by a certificate so
surrendered for conversion,  the Corporation shall issue and deliver or cause to
be delivered at the Conversion Office to or upon the written order of the holder
of  the  certificate  so  surrendered  for  conversion,  at the  expense  of the
Corporation, a new certificate or certificates representing the number of shares
of this  Series  representing  the  unconverted  portion of the  certificate  so
surrendered,  issued in such name or names as such holder may direct, subject to
any  applicable  contractual   restrictions  and  any  restrictions  imposed  by
applicable securities laws.

      (f) All  shares of this  Series  which  shall  have been  surrendered  for
conversion as herein  provided shall no longer be deemed to be  outstanding  and
all rights with respect to such shares, including the rights, if any, to receive
notices and to vote,  shall forthwith cease and terminate  except only the right
of the holder thereof to receive Common Shares in exchange therefor.  Any shares
of this  Series so  converted  shall be retired  and  canceled  and shall not be
reissued, and the Corporation may from time to time take such appropriate action
as may be necessary to reduce the authorized shares of this Series accordingly.

      (g) Anti-Dilution Provisions.

      (i) In order to  prevent  dilution of the  right  granted  hereunder,  the
Conversion  Price shall be subject to adjustment from time to time in accordance
with this paragraph  7(g)(i).  At any given time the  Conversion  Price shall be
that  dollar  (or  part of a  dollar)  amount  the  payment  of  which  shall be
sufficient at the given time to acquire one Common Share of the Corporation upon
conversion  of shares of this Series.  Upon each  adjustment  of the  Conversion
Price  pursuant to this Section 7(g),  the  registered  holder of shares of this
Series shall thereafter be entitled to acquire upon exercise,  at the Conversion
Price  resulting  from such  adjustment,  the  number  of  Common  Shares of the
Corporation obtainable by multiplying the Conversion Price in effect immediately
prior to such adjustment by the number of

                                      -12-
<PAGE>

shares of Common Shares of the Corporation  acquirable immediately prior to such
adjustment and dividing the product  thereof by the Conversion  Price  resulting
from such a adjustment.  For purposes of this Section 7(g),  the term "Number of
Common  Shares Deemed  Outstanding"  at any given time shall mean the sum of (x)
the number of shares of the  Corporation's  Common  Shares  outstanding  at such
time,  (y) the  number of Common  Shares of the  Corporation  issuable  assuming
conversion at such time of all  outstanding  shares of the  Corporation's  other
series of  convertible  preferred  stock,  if any,  and (z) the number of Common
Shares  of  the  Corporation  deemed  to  be  outstanding  at  such  time  under
subparagraphs 7(g)(ii)(1) to (8), inclusive.

     (ii) Except as provided in paragraph  7(g)(iii) or 7(g)(vi)  below,  if and
whenever on or after the Initial  Issuance Date, the Corporation  shall issue or
sell, or shall in accordance with subparagraphs  7(g)(ii)(1) to (8),  inclusive,
be deemed to have  issued or sold  (such  issuance  or sale,  whether  actual or
deemed, the "Triggering  Transaction") any Common Shares for a consideration per
share less than,

          (I)  (if the  Common  Shares  are not  traded  on the New  York  Stock
     Exchange,  the American Stock Exchange or the Nasdaq  National  Market) the
     Conversion Price in effect  immediately  prior to the time of such issuance
     or sale,  then forthwith  upon such issuance or sale the  Conversion  Price
     shall,  subject to subparagraphs  (1) to (8) of this Section  7(g)(ii),  be
     reduced to the Conversion Price (calculated to the nearest tenth of a cent)
     determined  by dividing:  (i) an amount equal to the sum of (x) the product
     derived by  multiplying  the  Number of Common  Shares  Deemed  Outstanding
     immediately  prior to such Triggering  Transaction by the Conversion  Price
     then in effect, plus (y) the consideration, if any, received by the Company
     upon consummation of such Triggering Transaction, by (H) an amount equal to
     the sum of (x) the Number of Common Shares Deemed  Outstanding  immediately
     prior to such Triggering  Transaction  plus (y) the number of Common Shares
     issued (or deemed to be issued in accordance with subparagraphs 7(g)(ii)(l)
     to (8)) in connection with the Triggering Transaction; or

          (II) (if the Common Shares are traded on the New York Stock  Exchange,
     the  American  Stock  Exchange or the Nasdaq  National  Market) the average
     Market Price for the ten trading days  immediately  preceding such issuance
     or sale,  then forthwith upon such Triggering  Transaction,  the Conversion
     Price shall,  subject to subparagraphs (1) to (8) of this Section 7(g)(ii),
     be reduced to the Conversion Price

                                      -13-
<PAGE>

     (calculated to the nearest tenth of a cent)  determined by multiplying  the
     Conversion Price in effect immediately prior to the time of such Triggering
     Transaction  by a fraction,  the numerator of which shall be the sum of (x)
     the Number of Common Shares Deemed  Outstanding  immediately  prior to such
     Triggering  Transaction  and (y) the  number  of  Common  Shares  which the
     aggregate  consideration  received  by the  Company  upon  such  Triggering
     Transaction  would purchase at the average Market Price for the ten trading
     days immediately preceding such Triggering Transaction, and the denominator
     of  which  shall  be  the  Number  of  Common  Shares  Deemed   Outstanding
     immediately after such Triggering Transaction.

     For  purposes  of  determining  the  adjusted  Conversion  Price under this
paragraph 7(g)(ii),  the following  subsections (1) to (8), inclusive,  shall be
applicable:

          (1) In case the  Corporation  at any time  shall in any  manner  grant
     (whether  directly or by assumption in an  amalgamation  or otherwise)  any
     rights to subscribe for or to purchase, or any options for the purchase of,
     Common  Shares  or any  stock  or  other  securities  convertible  into  or
     exchangeable  for Common Shares (such rights or options being herein called
     "Options" and such  convertible or exchangeable  stock or securities  being
     herein called "Convertible Securities"), whether or not such Options or the
     right  to  convert  or  exchange  any  such   Convertible   Securities  are
     immediately  exercisable,  and the price  per  share  for which the  Common
     Shares are issuable upon  exercise,  conversion or exchange  (determined by
     dividing  (x) the total  amount,  if any,  received  or  receivable  by the
     Corporation  as  consideration  for the granting of such Options,  plus the
     aggregate  amount of additional  consideration  payable to the  Corporation
     upon the exercise of all such  Options,  plus,  in the case of such Options
     which relate to Convertible Securities,  the aggregate amount of additional
     consideration,  if any,  payable upon the issue or sale of such Convertible
     Securities  and upon the conversion or exchange  thereof,  by (y) the total
     maximum number of Common Shares  issuable upon the exercise of such Options
     or the conversion or exchange of such Convertible Securities) shall be less
     than  the  average  Market  Price  in  effect  for  the  ten  trading  days
     immediately prior to the time of the granting of such Option (if the Common
     Shares  are  traded on the New York  Stock  Exchange,  the  American  Stock
     Exchange or the Nasdaq National  Market) or the

                                      -14-
<PAGE>

     Conversion Price in effect  immediately  prior to the time of such issuance
     or  sale  (if the  Common  Shares  are not  traded  on the New  York  Stock
     Exchange,  the American Stock Exchange or the Nasdaq National Market), then
     the total  maximum  amount of Common  Shares  issuable upon the exercise of
     such Options or, in the case of Options for  Convertible  Securities,  upon
     the conversion or exchange of such Convertible Securities, shall (as of the
     date of granting of such Options) be deemed to be  outstanding  and to have
     been  issued  and sold by the  Corporation  for such  price per  share.  No
     adjustment of the Conversion  Price shall be made upon the actual  issuance
     of such Common Shares or such  Convertible  Securities upon the exercise of
     such Options, except as otherwise provided in subparagraph (3) below.

          (2) In case the  Corporation  at any time  shall in any  manner  issue
     (whether directly or by assumption in an amalgamation or otherwise) or sell
     any  Convertible  Securities,  whether  or not the  rights to  exchange  or
     convert thereunder are immediately exercisable, and the price per share for
     which  Common  Shares  are  issuable  upon  such   conversion  or  exchange
     (determined by dividing (x) the total amount  received or receivable by the
     Corporation  as  consideration  for the  issue or sale of such  Convertible
     Securities, plus the aggregate amount of additional consideration,  if any,
     payable to the Corporation upon the conversion or exchange thereof,  by (y)
     the total maximum  number of Common Shares  issuable upon the conversion or
     exchange of all such Convertible Securities) shall be less than the average
     Market Price in effect for the ten-day trading period  immediately prior to
     the time of such issue or sale (if the Common  Shares are traded on the New
     York Stock  Exchange,  the American Stock  Exchange or the Nasdaq  National
     Market) or the Conversion Price in effect  immediately prior to the time of
     such  issuance or sale (if the Common Shares are not traded on the New York
     Stock Exchange, the American Stock Exchange or the Nasdaq National Market),
     then the total maximum number of Common Shares  issuable upon conversion or
     exchange of all such  Convertible  Securities  shall (as of the date of the
     issue or sale of such  Convertible  Securities) be deemed to be outstanding
     and to have been  issued  and sold by the  Corporation  for such  price per
     share. No adjustment of the Conversion  Price shall be made upon the actual
     issuance of such Common  Shares

                                      -15-
<PAGE>

     upon exercise of the rights to exchange or convert  under such  Convertible
     Securities, except as otherwise provided in subparagraph (3) below.

          (3) If the purchase price  provided for in any Options  referred to in
     subparagraph  (1), the additional  consideration,  if any, payable upon the
     conversion  or  exchange  of  any  Convertible  Securities  referred  to in
     subparagraphs  (1) or (2), or the rate at which any Convertible  Securities
     referred to in subparagraph (1) or (2) are convertible into or exchangeable
     for Common  Shares  shall change at any time (other than under or by reason
     of provisions designed to protect against dilution of the type set forth in
     paragraphs  7(g)(ii) or 7(g)(iv)),  the  Conversion  Price in effect at the
     time of such change shall  forthwith 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 rate, as the case may be, at the time
     initially  granted,  issued or sold. If the purchase  price provided for in
     any Option referred to in subparagraph (1) or the additional consideration,
                               -------------------------------------------------
     if  any,  payable  upon  the  conversion  or  exchange  of any  Convertible
     ---------------------------------------------------------------------------
     Securities  referred to in  subparagraphs  (1) or (2), or the rate at which
     ------------------------------------------------------
     any  Convertible  Securities  referred to in  subparagraphs  (1) or (2) are
     convertible into or exchangeable for Common Shares, shall be reduced at any
     time under or by reason of  provisions  with  respect  thereto  designed to
     protect  against  dilution,  then in case of the delivery of Common  Shares
     upon the exercise of any such Option or upon  conversion or exchange of any
     such  Convertible  Security,  the Conversion Price then in effect hereunder
     shall  forthwith be adjusted to such  respective  amount as would have been
     obtained had such Option or  Convertible  Security  never been issued as to
     such Common Shares and had  adjustments  been made upon the issuance of the
     Common  Shares  delivered  as  aforesaid,  but only if as a result  of such
     adjustment the Conversion Price then in effect hereunder is hereby reduced.

          (4) On the expiration of any Option or the termination of any right to
     convert or exchange any Convertible  Securities,  the Conversion Price then
     in effect  hereunder shall  forthwith be increased to the Conversion  Price
     which would have been in effect at the

                                      -16-
<PAGE>

     time of such  expiration  or  termination  had such  Option or  Convertible
     Securities,  to the extent outstanding immediately prior to such expiration
     or termination, never been issued.

          (5) In case any Options shall be issued in  connection  with the issue
     or sale of other  securities of the  Corporation,  together  comprising one
     integral  transaction  in which no specific  consideration  is allocated to
     such Options by the parties  thereto,  such Options shall be deemed to have
     been issued without consideration.

          (6) In case any Common Shares, Options or Convertible Securities shall
     be  issued or sold or  deemed  to have  been  issued or sold for cash,  the
     consideration  received  therefor shall be deemed to be the amount received
     by the Corporation therefor (before deduction for expenses or underwriters'
     discounts or commissions related to such issue or sale). In case any Common
     Shares,  Options or  Convertible  Securities  shall be issued or sold for a
     consideration  other than cash, the amount of the consideration  other than
     cash  received  by  the  Corporation  shall  be  the  fair  value  of  such
     consideration  as determined in good faith by the Board of Directors of the
     Corporation.

          (7) In case the Corporation shall declare a dividend or make any other
     distribution  upon the share capital of the  Corporation  payable in Common
     Shares,  Options, or Convertible  Securities,  then in such case any Common
     Shares, Options or Convertible Securities,  as the case may be, issuable in
     payment  of such  dividend  or  distribution  shall be  deemed to have been
     issued or sold without consideration.

          (8) For purposes of this paragraph  7(g)(ii),  in case the Corporation
     shall take a record of the holders of its Common  Shares for the purpose of
     entitling them (x) to receive a dividend or other  distribution  payable in
     Common Shares,  Options or in Convertible  Securities,  or (y) to subscribe
     for or purchase Common Shares, Options or Convertible Securities, then such
     record  date  shall be  deemed  to be the date of the  issue or sale of the
     Common  Shares 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

                                      -17-
<PAGE>

     granting of such right or subscription or purchase, as the case may be.

            (iii) In the event the Corporation shall declare a dividend upon the
Common  Shares  (other  than a  dividend  payable  in Common  Shares  covered by
subparagraph  7(g)(ii)(7))  payable  otherwise  than out of  earnings  or earned
surplus, determined in accordance with generally accepted accounting principles,
including the making of appropriate  deductions for minority interests,  if any,
in subsidiaries (herein referred to as "Liquidating  Dividends"),  then, as soon
as possible after the conversion of any shares of this Series,  the  Corporation
shall,  subject to applicable  law, pay to the person  converting such shares of
this Series an amount equal to the aggregate  value at the time of such exercise
of all  Liquidating  Dividends  (including  but not limited to the Common Shares
which would have been issued at the time of such earlier  exercise and all other
securities  which would have been issued with  respect to such Common  Shares by
reason of stock splits,  stock dividends,  amalgamations or reorganizations,  or
for any other reason). For the purposes of this paragraph 7(g)(iii),  a dividend
other than in cash shall be considered payable out of earnings or earned surplus
only to the extent that such  earnings  or earned  surplus are charged an amount
equal to the fair  value of such  dividend  as  determined  in good faith by the
Board.

            (iv) In case the Corporation shall at any time subdivide (other than
by  means  of  a  dividend   payable  in  Common  Shares  covered  by  paragraph
7(g)(ii)(7)) its outstanding  Common Shares into a greater number of shares, the
Conversion  Price  in  effect  immediately  prior to such  subdivision  shall be
proportionately reduced, and, conversely,  in case the outstanding Common Shares
of the  Corporation  shall be  combined  into a smaller  number of  shares,  the
Conversion  Price  in  effect  immediately  prior to such  combination  shall be
proportionately increased.

            (v) If any capital  reorganization or  reclassification of the share
capital of the  Corporation,  or amalgamation  of the  Corporation  with another
corporation,  or the sale of all or  substantially  all of its assets to another
corporation  shall be effected in such a way that holders of Common Shares shall
be entitled to receive stock, securities, cash or other property with respect to
or in exchange for Common Shares,  then, as a condition of such  reorganization,
reclassification,  amalgamation or sale, lawful and adequate  provision shall be
made  whereby  the  holders  of shares of this  Series  shall  have the right to
acquire and receive upon  conversion  of the shares of this Series,  which right
shall be prior to the  rights of the  holders of stock

                                      -18-
<PAGE>

ranking on  liquidation  junior to this  Series  (but  after and  subject to the
rights of holders of Senior  Preferred  Shares,  if any),  such shares of stock,
securities,  cash  or  other  property  issuable  or  payable  (as  part  of the
reorganization,  reclassification,  amalgamation  or sale) with respect to or in
exchange for such number of  outstanding  Common  Shares of the  Corporation  as
would have been  received  upon  conversion  of the shares of this Series at the
Conversion  Price  then in  effect.  The  Corporation  will not  effect any such
amalgamation or sale,  unless prior to the consummation  thereof the amalgamated
corporation or the  corporation  purchasing  such assets shall assume by written
instrument  mailed or  delivered  to the holders of the shares of this Series at
the last address of each such holder  appearing on the books of the Corporation,
the  obligation to deliver to each such holder such shares of stock,  securities
or assets as, in accordance  with the foregoing  provisions,  such holder may be
entitled to  receive.  If a  purchase,  tender or exchange  offer is made to and
accepted by the holders of more than 50% of the outstanding Common Shares of the
Corporation,  the Corporation shall not effect any amalgamation or sale with the
person having made such offer or with any  Affiliate (as defined  below) of such
person,  unless  prior  to the  consummation  of such  amalgamation  or sale the
holders  of the  shares  of this  Series  shall  have  been  given a  reasonable
opportunity  to then elect to receive upon the  conversion of the shares of this
Series either the stock,  securities or assets then issuable with respect to the
Common Shares of the  Corporation  or the stock,  securities  or assets,  or the
equivalent,  issued to previous  holders of the Common Shares in accordance with
such offer. For purposes hereof,  the term "Affiliate" with respect to any given
person shall mean any person controlling,  controlled by or under common control
with the given person.

     (vi) The  provisions  of this  Section  7(g)  shall not apply to any Common
Shares issued, issuable or deemed outstanding under subparagraphs 7(g)(ii)(1) to
(8) inclusive: (i) to any person pursuant to any stock option, stock purchase or
similar plan or arrangement  for the benefit of employees of the  Corporation or
its subsidiaries in effect on the Initial Issuance Date or thereafter adopted by
the Board of Directors of the  Corporation,  (ii) pursuant to options,  warrants
and  conversion  rights in existence on the Initial  Issuance  Date,  (iii) upon
exercise of the warrants of the  Corporation  issued to Warburg  pursuant to the
Amended and Restated  Warrant  Agreement or (iv) on  conversion of the shares of
this Series or the sale of any additional shares of this Series.

     (vii) In the event that:

                                      -19-
<PAGE>

          (1) the  Corporation  shall  declare any cash dividend upon its Common
     Shares, or

          (2) the Corporation  shall declare any dividend upon its Common Shares
     payable in stock or make any special dividend or other  distribution to the
     holders of its Common Shares, or

          (3) the  Corporation  shall  offer  for  subscription  pro rata to the
     holders of its Common Shares any additional shares of stock of any class or
     other rights, or

          (4) there shall be any capital  reorganization or  reclassification of
     the  share  capital  of  the  Corporation,  including  any  subdivision  or
     combination  of its  outstanding  Common  Shares,  or  amalgamation  of the
     Corporation  with,  or sale of all or  substantially  all of its assets to,
     another corporation, or

          (5) there shall be a voluntary or involuntary dissolution, liquidation
     or winding up of the Corporation;

then, in connection with such event,  the Corporation  shall give to the holders
of the shares of this Series:

          (A)     at least twenty (20) days' prior written notice of the date on
                  which the  books of the  Corporation  shall  close or a record
                  shall be taken for such dividend, distribution or subscription
                  rights or for  determining  rights to vote in  respect  of any
                  such  reorganization,  reclassification,  amalgamation,  sale,
                  dissolution, liquidation or winding up; and

          (B)     in the  case  of any  such  reorganization,  reclassification,
                  amalgamation, sale, dissolution, liquidation or winding up, at
                  least twenty (20) days' prior written  notice of the date when
                  the same shall take place.

Such notice in accordance with the foregoing  clause (A) shall also specify,  in
the case of any such dividend,  distribution or subscription rights, the date on
which the holders of Common Shares shall be entitled thereto, and such notice in
accordance  with the  foregoing  clause (B) shall also specify the date on which
the holders of Common  Shares shall be entitled to exchange  their Common Shares
for  securities  or  other  property   deliverable  upon  such   reorganization,
reclassification, amalgamation, sale,

                                      -20-
<PAGE>

dissolution,  liquidation  or winding up, as the case may be. Each such  written
notice  shall be given by first class mail,  postage  prepaid,  addressed to the
holders of the shares of this Series at the address of each such holder as shown
on the books of the Corporation.

            (viii) If at any time or from  time to time on or after the  Initial
Issuance  Date,  the  Corporation  shall  grant,  issue  or  sell  any  Options,
Convertible  Securities or rights to purchase  property (the "Purchase  Rights")
pro rata to the record holders of the Common Shares of the  Corporation and such
grants,  issuances  or sales do not result in an  adjustment  of the  Conversion
Price under paragraph 7(g)(ii) hereof, then each holder of shares of this Series
shall be entitled to acquire  (within  thirty (30) days after the later to occur
of the initial  exercise date of such Purchase  Rights or receipt by such holder
of the notice concerning  Purchase Rights to which such holder shall be entitled
under paragraph 7(g)(vii)) and upon the terms applicable to such Purchase Rights
either:

          (A)     the  aggregate  Purchase  Rights  which such holder could have
                  acquired if it had held the number of Common Shares acquirable
                  upon  conversion of shares of this Series  immediately  before
                  the grant, issuance or sale of such Purchase Rights;  provided
                  that if any  Purchase  Rights were  distributed  to holders of
                  Common Shares without the payment of additional  consideration
                  by  such  holders,  corresponding  Purchase  Rights  shall  be
                  distributed  to the  exercising  holders of the shares of this
                  Series as soon as possible  after such  exercise  and it shall
                  not be necessary  for the  exercising  holder of the shares of
                  this Series  specifically to request  delivery of such rights;
                  or

          (B)     in the event that any such Purchase  Rights shall have expired
                  or  shall  expire  prior  to the end of said  thirty  (30) day
                  period,  the number of Common Shares or the amount of property
                  which such holder could have  acquired  upon such  exercise at
                  the time or times at which the Corporation granted,  issued or
                  sold such expired Purchase Rights.

     (ix) If any event  occurs as to which,  in the  opinion of the  Board,  the
provisions  of this  Section  7(g) are not  strictly  applicable  or if strictly
applicable  would not fairly  protect the rights of the holders of the shares of
this Series in accordance

                                      -21-
<PAGE>

with the  essential  intent and  principles of such  provisions,  then the Board
shall make an adjustment in the  application of such  provisions,  in accordance
with such  essential  intent and  principles,  so as to protect  such  rights as
aforesaid,  but in no event shall any  adjustment  have the effect of increasing
the Conversion Price as otherwise  determined  pursuant to any of the provisions
of this  Section  7(g) except in the case of a  combination  of shares of a type
contemplated in paragraph 7(g)(iv) and then in no event to an amount larger than
the Conversion Price as adjusted pursuant to paragraph 7(g)(iv).

           (h) No fractional  Common Shares shall be issued upon the  conversion
     of any share or shares of this  Series.  If any  fractional  interest  in a
     Common Share would,  except for the  provisions  of this Section  7(h),  be
     deliverable upon the conversion of any share or shares of this Series,  the
     Corporation  shall  in lieu  of  delivering  the  fractional  Common  Share
     therefor satisfy such fractional  interest by payment to the holder of such
     surrendered  share or  shares of this  Series  of an  amount in cash  equal
     (computed  to the  nearest  cent)  to the  current  market  value  of  such
     fractional  interest,  computed  on the  basis of the  Market  Price of the
     Common Shares on the date of such conversion,  provided,  however,  that no
     amount  shall be paid by the  Corporation  to such holder of less than U.S.
     $5.00.

           (i) The  Corporation  shall  be  entitled  to  effect  the  mandatory
     conversion, in whole or in part, of the shares of this Series in accordance
     with this  Section 7 if all of the  following  conditions  (the  "Mandatory
                                         ---------------------------------------
     Conversion  Conditions")  have been  satisfied as of the date of the notice
     ------------------------
     described  below:  (i) the  Common  Shares are listed on the New York Stock
                     -----------------------------------------------------------
     Exchange,  the American Stock Exchange or the Nasdaq National Market;  (ii)
     ---------------------------------------------------------------------------
     the Common Shares are traded on the New York Stock  Exchange,  the American
     ---------------------------------------------------------------------------
     Stock Exchange or the Nasdaq National Market at a Market Price greater than
     ---------------------------------------------------------------------------
     U.S.  $8.00 per Common  Share on each of the 10  consecutive  trading  days
     ---------------------------------------------------------------------------
     preceding  such date;  and (iii) the  Corporation's  net income  (excluding
     ---------------------------------------------------------------------------
     profit or loss on disposal of a significant part of the Company's assets or
     ---------------------------------------------------------------------------
     separate segment thereof, gains on restructuring payables,  gains or losses
     ---------------------------------------------------------------------------
     on the extinguishment of debt,  expropriations of property, gains or losses
     ---------------------------------------------------------------------------
     that  are  the  direct  result  of a major  casualty,  or  one-time  losses
     ---------------------------------------------------------------------------
     resulting from prohibition under a newly-enacted law or regulation)  before
     ---------------------------------------------------------------------------
     income  taxes,  Dividends  on the  shares of this  Series  and the Series B
     ---------------------------------------------------------------------------
     Convertible Shares and
     ----------------------

                                      -22-
<PAGE>

     amortization  of  goodwill  and  covenants  not to  compete  for the  three
     ---------------------------------------------------------------------------
     consecutive  fiscal quarters preceding such date, as reported in or derived
     ---------------------------------------------------------------------------
     from  the  Corporation's   quarterly  or  annual  reports  filed  with  the
     ---------------------------------------------------------------------------
     Securities and Exchange Commission, shall have averaged at least U.S. $0.22
     ---------------------------------------------------------------------------
     per fully diluted Common Share per fiscal quarter,  provided,  however,  in
     ---------------------------------------------------------------------------
     making such  calculation,  the Common Shares  issuable upon exercise of the
     ---------------------------------------------------------------------------
     warrants  issued to Warburg  pursuant to the Amended and  Restated  Warrant
     ---------------------------------------------------------------------------
     Agreement, shall be excluded but Common Shares issuable upon the conversion
     ---------------------------------------------------------------------------
     of the shares of this Series and the Series B Convertible Shares shall not.
     ---------------------------------------------------------------------------
     All references to per share amounts or prices with respect to the Mandatory
     ---------------------------------------------------------------------------
     Conversion Conditions shall be appropriately  adjusted for any subdivision,
     ---------------------------------------------------------------------------
     consolidation, or reclassification of the Common Shares.
     --------------------------------------------------------

     Upon such mandatory  conversion,  each share of this Series subject to such
conversion  shall  be  converted  into  Common  Shares  at  the  then  effective
Conversion  Price  for such  shares.  In case the  Corporation  shall  desire to
exercise  the right to  convert  all or, as the case may be,  any shares of this
Series in  accordance  with the right to do so, it shall  provide  notice to the
holders of the shares of this Series to be converted as hereinafter  provided in
this Section 7(i).

           (i) A notice of conversion shall be given to the holders of shares of
           ----
     this Series to be  converted by mailing by  first-class  mail to their last
     addresses  as they shall appear upon the register for shares of this Series
     not less than 120 calendar days prior to the date fixed for conversion.

           (ii) Each such notice of conversion  (A) shall specify the date fixed
           ----

     for conversion and the number of Common Shares  issuable to the holder of a
     share of this Series upon such  conversion,  (B) shall state the offices or
     agencies  to be  maintained  by the  Corporation  for the  purpose  of such
     conversion,  upon  presentation and surrender of such shares of this Series
     and (C) if less than all the  shares of this  Series  are to be  converted,
     shall specify the number of shares of this Series held by each holder,  and
     the serial numbers of the certificates  thereof,  to be converted.  In case
     any  certificate  representing  shares of this Series is to be converted in
     part only, the notice of conversion which relates to such certificate shall
     state the number of shares of this Series represented by such certificate

                                      -23-
<PAGE>

     to be converted and shall state that on and after the conversion date, upon
     surrender of such  certificate,  a new  certificate or  certificates  for a
     number of shares of this Series equal to the  unconverted  portion  thereof
     will be issued.

           (j) The  Corporation  will at all times  reserve and keep  available,
     solely for the purposes of the issuance of Common Shares upon conversion of
     the shares of this  Series,  the full  number of Common  Shares as shall be
     issuable upon the conversion of all such outstanding shares of this Series.

          The  Corporation  will  endeavor  to comply with all  securities  laws
     regulating  the offer and delivery of Common Shares upon  conversion of the
     shares  of this  Series  and,  that if any  Common  Shares  required  to be
     reserved  for  purposes  of  conversion  of the  shares  hereunder  require
     registration with or approval of any governmental  authority under any U.S.
     (federal or state) or Canadian law before such Common Shares may be validly
     issued or delivered upon  conversion,  the Corporation  will, in good faith
     and as expeditiously as possible,  endeavor to secure such  registration or
     approval, as the case may be.

           All Common Shares which shall be issued upon conversion of the shares
     of this Series will upon issuance be fully paid and  nonassessable  and not
     subject to preemptive rights.

           (k) The issuance of certificates for Common Shares upon conversion of
     shares of this Series shall be made  without  charge for any stamp or other
     similar tax in respect of such issuance.  However,  if any such certificate
     is to be issued in a name  other  than that of the  holder of record of the
     share or shares of this Series so converted,  the holder  thereof shall pay
     to the Corporation the amount of any tax which may be payable in respect of
     any  transfer   involved  in  such  issuance  or  shall  establish  to  the
     satisfaction  of the  Corporation  that  such tax has  been  paid or is not
     payable.

           (l) In case (A) the  Corporation  shall take any action  which  would
     require an adjustment in the number of Common Shares issuable to holders of
     shares of this  Series upon  conversion  thereof  pursuant to Section  7(g)
     above;  or (B)  there  shall be a  voluntary  or  involuntary  dissolution,
     liquidation  or winding  up of the  affairs  of the  Corporation;  then the
     Corporation  shall  cause to be given to the  holders of the shares of this
     Series at least ten days prior to the

                                      -24-
<PAGE>

     applicable record date hereinafter  specified,  a notice of (X) the date on
     which a record is to be taken for the purpose of any dividend, distribution
     or  grant  to  holders  of  Common  Shares  which  would  require  such  an
     adjustment,  or, if a record  is not to be taken,  the date as of which the
     holders  of  Common  Shares  of record  to be  entitled  to such  dividend,
     distribution,  or grant are to be  determined or (Y) the date on which such
     reorganization,    reclassification,    amalgamation,    sale,    transfer,
     dissolution, liquidation or winding up is expected to become effective, and
     the date as of which it is expected that holders of Common Shares of record
     shall be entitled to exchange  their Common Shares for  securities or other
     property   or  other   assets   deliverable   upon   such   reorganization,
     reclassification,  amalgamation, sale, transfer, dissolution,  liquidation,
     or winding up.  Failure to give such notice or any defect therein shall not
     affect  the   legality  or  validity  of  any   proceedings   described  in
     subparagraphs (A) or (B) of this Section 7(l).

      8. Miscellaneous.


           (a) For the purposes hereof:

                (i) the term "outstanding",  when used in reference to shares of
          this Series, shall mean issued shares of this Series, excluding shares
          of this Series called for redemption; and

                (ii)  any  shares  of  a  series  or  class  of  shares  of  the
          Corporation shall be deemed to rank:

                                      -25-
<PAGE>

                     (A)  prior to shares  of this  Series,  whether  or not the
               dividend   rates,   dividend   payment  dates  or  redemption  or
               liquidation  prices per share thereof be different  from those of
               shares of this Series,  if the holders of such shares of a series
               or  class  of  shares  shall  be  entitled  to  receipt  from the
               Corporation  of  dividends  or  of  amounts   distributable  upon
               liquidation, dissolution or winding up, in preference or priority
               to the holders of shares of this Series, as the case may be;

                     (B) on a parity  with or equal to  shares  of this  Series,
               whether or not the  dividend  rates,  dividend  payment  dates or
               redemption or  liquidation  prices per share thereof be different
               from  those of  shares of this  Series,  if the  holders  of such
               shares of a series or class of shares  shall be  entitled  to the
               receipt  from  the   Corporation   of  dividends  or  of  amounts
               distributable upon liquidation to their respective dividend rates
               or liquidation  prices,  without  preference or priority one over
               the other as between  the  holders of such  shares of a series or
               class of shares and the holders of shares of this Series; and

                     (C)  subordinate  to shares of this Series,  whether or not
               the dividend  rates,  dividend  payment  dates or  redemption  or
               liquidation  prices per share thereof be different  from those of
               shares  of this  Series,  if the  rights of the  holders  of such
               shares of a series or class of shares shall be subordinate to the
               rights of the  holders of shares of this Series in respect of the
               receipt  from  the   Corporation  of  dividends  and  of  amounts
               distributable  upon  liquidation,   dissolution  or  winding  up,
               including,   without   limitation,   the  Common  Shares  of  the
               Corporation.

           (b) So long as any  shares of this  Series  are  outstanding,  in the
     event of any  conflict  between  the  provisions  hereof and any  corporate
     document  of the  Corporation  (both as  presently  existing  or  hereafter
     amended and supplemented) the provisions hereof, as the same may be amended
     or supplemented, shall be and remain controlling.

                                      -26-
<PAGE>

           (c) The holders of the shares of this Series shall have no preemptive
     rights.

                                      -27-
<PAGE>
                                   SONUS CORP.
                                  ------------

                                      PROXY
                                  ------------


        FOR USE AT THE ANNUAL AND SPECIAL GENERAL MEETING OF SHAREHOLDERS
                         TO BE HELD ON DECEMBER 15, 1999

The undersigned  shareholder of SONUS CORP. (the "Corporation")  hereby appoints
Brandon M. Dawson,  William DeJong or Gregory J. Frazer,  Ph.D., each a director
of   the    Corporation,    or    instead    of    any    of   the    foregoing,
- -------------------------,  as proxy for the  undersigned  to attend and act for
and on behalf of the  undersigned at the Annual and Special  General  Meeting of
the  Shareholders of the Corporation  (the "Meeting") to be held on the 15th day
of December,  1999, and at any adjournment or adjournments  thereof, to the same
extent and with the same power as if the undersigned were personally  present at
the said  meeting or such  adjournment  or  adjournments  thereof  and,  without
limiting the generality of the power hereby conferred,  the designee named above
is specifically directed to vote (or withhold or abstain from voting) the Common
Shares and  Preferred  Shares of the  Corporation  registered in the name of the
undersigned as indicated below.

1.    RESOLUTION FIXING THE NUMBER OF DIRECTORS AT EIGHT.

            FOR [ ]           AGAINST [ ]       ABSTAIN [ ]


2.    ELECTION OF DIRECTORS.

            FOR [ ]                             WITHHOLD VOTE [ ]
      all nominees listed (except               as to all nominees
      as marked to the contrary below)          listed below

      (INSTRUCTION:  TO WITHHOLD  AUTHORITY TO VOTE FOR ANY INDIVIDUAL  NOMINEE,
      STRIKE A LINE THROUGH THE NOMINEE'S NAME IN THE LIST BELOW)

      Joel  Ackerman,  Haywood D.  Cochrane,  Jr.,  Brandon M.  Dawson,  William
      DeJong,  Gregory J. Frazer,  Ph.D.,  Hugh T.  Hornibrook,  Scott E. Klein,
      David J. Wenstrup.


3.    RESOLUTION  APPROVING THE  APPOINTMENT  OF KPMG LLP as the auditors of the
      Corporation and authorizing the directors to fix their remuneration.

            FOR [ ]                             WITHHOLD VOTE [ ]


4.    RESOLUTION APPROVING THE AMENDMENT OF THE CORPORATION'S  ARTICLES AMENDING
      AND  RESTATING  THE  TERMS  OF  THE  CORPORATION'S  SERIES  A  CONVERTIBLE
      PREFERRED SHARES.

            FOR [ ]           AGAINST [ ]       ABSTAIN [ ]


                                               (PLEASE SIGN AND DATE ON REVERSE)

                                      -1-
<PAGE>

5.    To vote at the  discretion  of the proxy  designee  on any  amendments  or
      variations to the  foregoing and on any other matters  (other than matters
      which are to come  before the Meeting and which are the subject of another
      proxy  executed by the  undersigned)  which may  properly  come before the
      Meeting or any adjournment or adjournments thereof.

THIS PROXY IS SOLICITED ON BEHALF OF THE  MANAGEMENT OF THE  CORPORATION  AT THE
DIRECTION OF THE BOARD OF  DIRECTORS.  SHAREHOLDERS  HAVE THE RIGHT TO APPOINT A
PERSON TO ATTEND AND ACT ON THEIR  BEHALF AT THE  MEETING  OTHER THAN ONE OF THE
PERSONS  LISTED ABOVE AND MAY EXERCISE  SUCH RIGHT BY INSERTING THE NAME OF SUCH
PERSON (WHO NEED NOT BE A  SHAREHOLDER)  IN THE BLANK SPACE  PROVIDED  ABOVE FOR
THAT PURPOSE.  THE UNDERSIGNED  REVOKES ANY INSTRUMENT OF PROXY PREVIOUSLY GIVEN
FOR THE PURPOSE OF THE MEETING IN RESPECT OF COMMON SHARES AND PREFERRED  SHARES
HELD BY THE UNDERSIGNED.

DATED --------------, 1999.



- ------------------------------------------------
Signature of Shareholder(s)

                              NOTES:

                              1.    Please  sign  exactly  as your name  appears
                                    below.  If the shares are jointly held, each
                                    joint owner named should sign.  When signing
                                    as   attorney,    personal   representative,
                                    administrator,  or other  fiduciary,  please
                                    give  full  title.   If  a  corporation   or
                                    partnership,  please sign in full  corporate
                                    or partnership name by authorized officer or
                                    person.  If the  proxy  form is not dated in
                                    the space provided, it is deemed to bear the
                                    date on which it is mailed by the management
                                    of the Corporation.

                              2.    IN THE EVENT THAT NO SPECIFICATION  HAS BEEN
                                    MADE WITH  RESPECT  TO THE  VOTING ON ONE OR
                                    MORE OF THE RESOLUTIONS REFERRED TO IN ITEMS
                                    1 THROUGH 4 ABOVE,  THE  PROXY  DESIGNEE  IS
                                    INSTRUCTED TO VOTE THE SHARES REPRESENTED BY
                                    THIS PROXY ON EACH SUCH  MATTER AND FOR SUCH
                                    RESOLUTION.  MARKING  THE  "ABSTAIN"  BOX ON
                                    ITEMS 1 AND 4 WILL  BE  DEEMED  TO HAVE  THE
                                    SAME EFFECT AS A VOTE AGAINST THE PROPOSAL.

                              3.    To be  effective,  proxies  must be received
                                    before 10 a.m.  (Calgary  time) on  December
                                    14,  1999,  by CIBC  Mellon  Trust  Company,
                                    Suite 600,  333-7th  Avenue  S.W.,  Calgary,
                                    Alberta,  Canada T2P 2Z1 or be  presented at
                                    the Meeting.


                              PLEASE MARK, SIGN, DATE AND RETURN THIS PROXY
                              PROMPTLY USING THE ENCLOSED ENVELOPE.




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