EXCHANGE RIGHTS AGREEMENT
                                   (Preferred)


     This  Agreement is dated as of the 29th day of June,  2001 among NCT Group,
Inc., a Delaware  corporation  (the  "Company"),  and the Holders  identified on
Schedule A hereto (individually a "Holder", collectively the "Holders").

     WHEREAS,  Artera Group,  Inc.  (formerly NCT  Networks,  Inc.),  a Delaware
corporation, is a wholly owned subsidiary of the Company ("Subsidiary"); and

     WHEREAS,  the  Holders  are  owners  of  Series  A  Preferred  Stock of the
Subsidiary, $.01 par value per share ("Preferred Shares") identified on Schedule
A hereto, which Preferred Shares were issued in connection with transactions by,
between  and among  the  Company,  the  Subsidiary,  the  Holders,  and  Teltran
International Group, Inc., a Delaware corporation; and

     WHEREAS,  some of the Holders are intending to loan up to $1,000,000 to the
Subsidiary,  with such loans to be evidenced by Convertible  Promissory Notes of
the Subsidiary ("Notes"); and

     WHEREAS  it is in the best  interests  of the  Company  for the  Holders to
purchase  the  Notes  and as an  inducement  therefore  and for  other  good and
valuable  consideration,  the  receipt  of which is hereby  acknowledged  by the
Company,  the Company hereby grants the exchange rights  described herein to the
Holders.

     NOW THEREFORE, the parties agree as follows:

     1. Exchange into the Company's Common Stock.

     (a) The Holder shall have the right (such a right an "Exchange Right") from
November  30,  2001,  and at any  time  thereafter  that  Preferred  Shares  are
outstanding,  to exchange any outstanding  Stated Value of the Preferred  Shares
and accrued dividends for fully paid and  nonassessable  shares of the Company's
common  stock,  par value $0.01 per share,  as such stock  exists on the date of
issuance of the Preferred Shares, or any shares of capital stock of Company into
which such stock shall hereafter be changed or reclassified (the "Common Stock")
at the exchange price as defined in Section 1(b) hereof (the "Exchange  Price"),
determined as provided herein. The number of shares of Common Stock to be issued
upon each exchange of the  Preferred  Shares shall be determined by dividing the
principal  of that  portion  of the  Preferred  Shares to be  exchanged,  by the
Exchange Price.

     (b) Subject to  adjustment  as provided in Section 4 hereof,  the  exchange
price per share (the  "Exchange  Price") shall be one hundred  percent (100%) of
the  average of the  closing  bid  prices  for the Common  Stock on the OTC Pink
Sheets, NASD OTC Bulletin Board, NASDAQ SmallCap Market,  NASDAQ National Market
System,  American Stock Exchange, or New York Stock Exchange, as applicable,  or
if not then  trading on any of the  foregoing,  such other  principal  market or
exchange where the Common Stock is listed or traded  (whichever of the foregoing
is at the time the  principal  trading  exchange or market for the Common Stock,
the  "Principal  Market"),  for the  five  (5)  trading  days  prior  to but not
including the Exchange Date.

     2. (a)  Exchange  Procedure/Optional  Redemption.  The Holder of  Preferred
Shares desiring to exchange any Stated Value or accrued dividend portion of such
Preferred  Shares  may give  written  notice of its  decision  to  exchange  the
Preferred  Shares for Common Stock by delivering or  telecopying an executed and
completed  notice of exchange in the form annexed  hereto (such notice a "Notice
of Exchange")  to the Company (any date of giving such a Notice of Exchange,  an
"Exchange  Date") and  delivering  within three  business days  thereafter,  the
original  Preferred Share certificate to the Company.  The Company will transmit
the certificates  representing the shares of Common Stock issuable upon exchange
of Preferred  Shares (together with a Preferred Share  certificate  representing
the Stated Value and dividends not exchanged) to the Holder via express courier,
by electronic  transfer or otherwise for receipt by the Holder,  within five (5)
business days after receipt by the Company of the original or telecopied  Notice
of Exchange and thereafter,  the Preferred Shares to be exchanged (the "Delivery
Date").  The Holder of the Preferred Shares so surrendered for exchange shall be
entitled to receive on or before the Delivery Date a certificate or certificates
which shall be fully paid and  non-assessable for the number of shares of Common
Stock to which such Holder shall be entitled upon such  exchange,  registered in
the name of such Holder. In the case of any Preferred Share certificate which is
exchanged  only in part,  the Holder of Preferred  Shares shall upon delivery of
the  certificate or  certificates  representing  Common Stock also receive a new
Preferred  Share  certificate   representing  the  unexchanged  portion  of  the
Preferred Shares.

     (b) The Company shall not be required,  in connection  with any exchange of
Preferred  Shares,  to issue a fraction of a share of its Common Stock and shall
instead deliver a stock certificate representing the next whole number.

     (c) The Company will, at any time and from time to time, have the option of
redeeming any outstanding Preferred Shares ("Optional  Redemption") by paying to
the Holder a sum of money  equal to the  Stated  Value of the  Preferred  Shares
together  with  accrued  but  unpaid  dividends  thereon  ("Redemption  Amount")
outstanding on the day notice of redemption ("Notice of Redemption") is given to
a Holder ("Redemption  Date"). A Notice of Redemption may be given in connection
with any portion of the Stated Value and  dividends  including  the Stated Value
and dividends for which Notice of Exchange has been given by the Holder provided
the Company  elects  within one (1)  business  day after  receipt of a Notice of
Exchange to give the Holder a Notice of Redemption  in  connection  with some or
all of the Redemption  Amount.  A Notice of Redemption  must be accompanied by a
certificate  signed by the chief executive officer or chief financial officer of
the Company  stating that the Company has on deposit and segregated  ready funds
equal to the Redemption Amount. The Redemption Amount must be paid in good funds
to the Holder no later than the tenth (10th)  business day after the  Redemption
Date ("Optional Redemption Payment Date"). In the event the Company fails to pay
the  Redemption  Amount  by the  Optional  Redemption  Payment  Date,  then  the
Redemption  Notice will be null and void and the Company will thereafter have no
further right to effect an Optional Redemption.

     3.  Exchange  Limitations.  The Holder may not exchange  that amount of the
Preferred Shares on an Exchange Date into amounts of Common Stock which would be
in excess of the sum of (i) the  number of shares of Common  Stock  beneficially
owned by the Holder  and its  affiliates  on such  Exchange  Date,  and (ii) the
number of shares of Common Stock  issuable  upon the  exchange of the  Preferred
Shares with respect to which the  determination of this proviso is being made on
such Exchange Date, which would result in beneficial ownership by the Holder and
its affiliates of more than 9.99% of the  outstanding  shares of Common Stock of
the  Company.  For the  purposes  of the  proviso to the  immediately  preceding
sentence,  beneficial  ownership  shall be determined in accordance with Section
13(d) of the Securities  Exchange Act of 1934, as amended (the "Exchange  Act"),
and Rule 13d-3  promulgated  thereunder.  The  Holder  may  revoke the  exchange
limitation  described  in this  Paragraph  3 upon 75 days  prior  notice  to the
Company.  The Holder may  allocate  which of the  equity of the  Company  deemed
beneficially owned by the Holder shall be included in the 9.99% amount described
above and which shall be allocated to the excess above 9.99%.

     4. Merger/Sale of Assets/Dividends.

     (a) In case of any  merger of the  Company  with or into any other  Company
(other than a merger in which the Company is the surviving or continuing Company
and which does not result in any  reclassification,  exchange,  or change of the
outstanding  shares of Common Stock) then unless the right to exchange Preferred
Shares shall have terminated,  as part of such merger provision shall be made so
that Holders of Preferred  Shares  shall  thereafter  have the right to exchange
Preferred Shares held by such Holder into the kind and amount of shares of stock
and/or other  securities or property  receivable upon such merger by a holder of
the number of shares of Common Stock into which such Preferred Shares might have
been exchanged  immediately prior to such consolidation or merger. The foregoing
provisions of this Paragraph 4 shall similarly apply to successive mergers.

     (b) In case of any sale or  conveyance  to another  person or entity of the
property of the Company as an entirety,  or  substantially  as an  entirety,  in
connection with which shares or other securities or cash or other property shall
be issuable,  distributable,  payable,  or deliverable for outstanding shares of
Common Stock, then, unless the right to exchange the Preferred Shares shall have
terminated,  lawful  provision  shall be made so that the  Holders of  Preferred
Shares shall thereafter have the right to exchange the Preferred Shares into the
kind and amount of shares of stock or other securities or property that shall be
issuable,  distributable,  payable,  or deliverable upon such sale or conveyance
with respect to each share of Common Stock immediately prior to such conveyance.

     (c) If the shares of Common Stock are subdivided or combined into a greater
or smaller  number of shares of Common  Stock,  or if a dividend  is paid on the
Common  Stock  in  shares  of  Common  Stock,   the  Exchange   Price  shall  be
proportionately  reduced in case of  subdivision  of shares or stock dividend or
proportionately  increased in the case of  combination  of shares,  in each such
case by the ratio which the total number of shares of Common  Stock  outstanding
immediately after such event bears to the total number of shares of Common Stock
outstanding immediately prior to such event.

     (d) In case at any time the Company shall propose:

     (i) to pay any dividend or  distribution  payable in shares upon its Common
Stock or make any distribution (other than cash dividends) to the holders of its
Common Stock; or

     (ii) to offer for  subscription  to the  holders  of its  Common  Stock any
additional shares of any class or any other rights; or

     (iii) any capital  reorganization or  reclassification of its shares or the
merger of the Company  with  another  Company  (other than a merger in which the
Company is the surviving or continuing  Company and which does not result in any
reclassification,  exchange,  or  change  of the  outstanding  shares  of Common
Stock); or

     (iv) the voluntary dissolution, liquidation or winding-up of the Company;

then,  and in any one or more of said cases,  the  Company  shall cause at least
fifteen (15) days prior notice of the date on which (A) the books of the Company
shall  close or a record  be taken for such  stock  dividend,  distribution,  or
subscription  rights,  or (B)  such  capital  reorganization,  reclassification,
merger, dissolution, liquidation or winding-up shall take place, as the case may
be, to be mailed to the Holders of Preferred Shares.

     (e) The  Company  shall pay the amount of any and all issue  taxes (but not
income  taxes) which may be imposed in respect of any issue or delivery of stock
upon the exchange of Preferred  Shares,  but all transfer taxes and income taxes
that may be payable in respect of any change of ownership of Preferred Shares or
any rights  represented  thereby or of stock  receivable  upon exchange  thereof
shall be paid by the person or persons  surrendering  such Preferred  Shares for
exchange.

     (f)  Whenever  the  number  of shares to be  issued  upon  exchange  of the
Preferred Shares is required to be adjusted as provided in this Paragraph 4, the
Company shall  forthwith  compute the adjusted  number of shares to be so issued
and the adjusted  Exchange  Price and prepare a  certificate  setting forth such
adjusted  exchange amount and the facts upon which such adjustment is based, and
such  certificate  shall  forthwith  be  delivered  to each Holder of  Preferred
Shares.

     5. Liquidated Damages.

     (a) In the  event a Holder  shall  elect to  exchange  Preferred  Shares as
provided  herein,  the Company may not refuse  exchange  based on any claim that
such  Holder or any one  associated  or  affiliated  with such  Holder  has been
engaged in any  violation of law, or for breach of this  Agreement or any of the
agreement  between the Company and its  affiliates and the Holders,  unless,  an
injunction from a court, on notice, restraining and or enjoining exchange of all
or part of said Preferred  Shares shall have been issued and the Company posts a
surety  bond for the  benefit of such Holder in the amount of 125% of the Stated
Value of the  Preferred  Shares and accrued  dividends  sought to be  exchanged,
which is subject to the injunction,  which bond shall remain in effect until the
completion  of  arbitration/litigation  of the dispute and the proceeds of which
shall be payable to such Holder in the event it obtains judgment.

     (b) Intentionally Omitted.

     (c) Intentionally Omitted.

     (d) In the event (i) the Company is prohibited  from issuing  Common Stock;
(ii) fails to timely  deliver  Common  Stock within five  business  days after a
Delivery  Date;  (iii) if the  Approval  (as defined in Section 6 hereof) is not
obtained on or before July 10, 2001; or (iv) if the Required Reserve (as defined
in  Section 6 hereof) is not set aside and  reserved  on behalf of the holder of
the Preferred Shares on or before July 10, 2001, then at the Holder's  election,
the Company must pay to the Holder five (5) business  days after  request by the
Holder or on the Delivery Date (if requested by the Holder) a sum of money equal
to the  Preferred  Shares Stated Value  designated  by the Holder  together with
accrued  but unpaid  interest  thereon  ("Mandatory  Redemption  Payment").  The
Mandatory  Redemption Payment must be received by the Holder on the same date as
the Common Stock  otherwise  deliverable  or within five (5) business days after
request, whichever is sooner ("Mandatory Redemption Payment Date"). Upon receipt
of the Mandatory  Redemption Payment, the corresponding Stated Value and accrued
dividends will be deemed paid and no longer outstanding.

     (e) In the event the Common  Stock  issuable  upon  exchange  of  Preferred
Shares is not included for resale in an effective  registration statement at any
time when such Common Stock is required to be so included  pursuant to the terms
of  this  Agreement,  and  the  Registration  Rights  Agreement  referred  to in
Paragraph 7 below,  then the Holder may elect, at the Holder's sole  discretion,
to receive an amount of  restricted  Common  Stock equal to the amount of Common
Stock  otherwise  receivable upon exchange in lieu of the Common Stock otherwise
receivable pursuant to the relevant Notice of Exchange.

     (f)  Nothing  contained  herein or in any  document  referred  to herein or
delivered  in  connection  herewith  shall be deemed to establish or require the
payment  of a rate of  interest  or  other  charges  in  excess  of the  maximum
permitted by applicable law. In the event that the rate of interest or dividends
required to be paid or other charges  hereunder exceed the maximum  permitted by
such law,  any  payments in excess of such  maximum  shall be  credited  against
amounts owed by the Company to the Holder and thus refunded to the Company.

     6.  Undertaking/Share  Reservation.  So long as any Preferred  Shares shall
remain  outstanding  and the  Holders  thereof  shall have the right to exchange
same,  the Company shall at all times reserve from the  authorized  and unissued
shares of its Common  Stock a  sufficient  number of shares to provide  for such
exchanges  subject to the  following:  The  Company  will  reserve the number of
shares of Common Stock on behalf of each Holder of Preferred Shares equal at all
times to not less than 130% of the  amount of Common  Stock  necessary  to allow
exchange of the entire Preferred Shares Stated Value and accrued  dividends.  To
the extent that the Company  does not have  sufficient  authorized  and unissued
shares of Common Stock  available for full exchange of the Preferred  Shares and
accrued dividends,  the Company shall seek shareholder  approval to increase the
number of authorized  shares of Common Stock to provide for the  reservation  of
the number of shares of Common  Stock  equal to not less than 130% of the number
of shares of Common Stock that would be issuable  upon exchange of the Preferred
Shares and accrued  dividends  employing the lowest  Exchange Price in effect at
any  time  from the  date of this  Agreement  and  until  the  date  immediately
preceding  the date of the meeting of the Company's  shareholders  at which such
approval  is  sought  (such  amount  being  the   "Required   Reserve"  and  the
shareholder's  approval being the "Approval").  The Company undertakes to obtain
the Approval no later than July 10, 2001 and reserve the Required Reserve.

     7. Registration  Rights.  The Holder has been granted certain  registration
rights by the Company in connection  with the Common Stock.  These  registration
rights are set forth in a  Registration  Rights  Agreement  entered  into by the
Company and Holder at or about the date of this Agreement.

     8. Waiver.  The Company and Subsidiary hereby waive any right of recission,
set-off and each and every other tortious or contractual  claim as the foregoing
relate to the Preferred Shares held by the Holders, arising out of any contract,
agreement,  course of dealing or  relationship  between  and among the  Company,
Subsidiary,  Teltran  International  Group,  Ltd., Byron Lerner,  or James Tubbs
(collectively a "Claim").  The Company and Subsidiary hereby agree that no Claim
will be raised  against  the Holders nor will any attempt be made by the Company
or  Subsidiary  to deprive  the  Holders  of any rights as holders of  Preferred
Shares based on a Claim. The foregoing shall not limit the rights of the Company
and  Subsidiary  to make a Claim  provided  there shall be no  impairment of the
rights of the Holders in the Preferred Shares nor any impairment of the value of
the Preferred Shares.

     9. Indemnification.

     (a) The Company agrees to indemnify,  hold  harmless,  reimburse and defend
Holder, Holder's officers,  directors, agents, affiliates,  control persons, and
principal shareholders, against any claim, cost, expense, liability, obligation,
loss or damage (including  reasonable legal fees) of any nature,  incurred by or
imposed upon Holder or any such person which results,  arises out of or is based
upon (i) any  misrepresentation  by Company or breach of any warranty by Company
in this  Agreement  or in any Exhibits or Schedules  attached  hereto,  or other
agreement  delivered pursuant hereto; or (ii) after any applicable notice and/or
cure  periods,  any  breach or  default  in  performance  by the  Company of any
covenant or undertaking to be performed by the Company  hereunder,  or any other
agreement entered into by the Company and Holders relating hereto.

     (b) Holder agrees to  indemnify,  hold  harmless,  reimburse and defend the
Company and the  Company's  officers  and  directors  against  any claim,  cost,
expense, liability, obligation, loss or damage (including reasonable legal fees)
of any nature,  incurred by or imposed upon the Company or any such person which
results,  arises out of or is based upon (i) any  misrepresentation by Holder or
breach  by  Holder of any  warranty  in this  Agreement  or in any  Exhibits  or
Schedules attached hereto or other agreement  delivered pursuant hereto; or (ii)
after any  applicable  notice  and/or  cure  periods,  any  breach or default in
performance  by Holder of any covenant or  undertaking to be performed by Holder
hereunder,  or any other  agreement  entered  into by the  Company  and  Holders
relating hereto.

     10. Miscellaneous.

     (a) Notices.  All notices or other  communications  given or made hereunder
shall be in writing and shall be  personally  delivered or deemed  delivered the
first business day after being telecopied  (provided that a copy is delivered by
first class mail) to the party to receive the same on Schedule A hereto:  (i) if
to the Company,  to NCT Group,  Inc.,  20 Ketchum  Street,  Westport,  CT 06880,
telecopier number:  (203) 226-4338,  with a copy by telecopier only to: Latham &
Watkins,  555 Eleventh Avenue,  N.W.,  Washington,  D.C. 20004, Attn: William P.
O'Neill,  Esq.,  telecopier number: (202) 637-2201 and (ii) if to the Holder, to
the name, address and telecopy number set forth on Schedule A hereto. Any notice
that may be given  pursuant to this  Agreement,  or any  document  delivered  in
connection  with the foregoing may be given by the Holder on the first  business
day after the observance dates in the United States of America by Orthodox Jewry
of Rosh Hashanah,  Yom Kippur,  the first two days of the Feast of  Tabernacles,
Shemini Atzeret, Simchat Torah, the first two and final two days of Passover and
Pentecost, with such notice to be deemed given and effective, at the election of
the Holder on a holiday date that precedes such notice.  Any notice  received by
the Holder on any of the aforedescribed  holidays may be deemed by the Holder to
be  received  and  effective  as if such  notice had been  received on the first
business day after the holiday. Notice of change of address for purposes of this
section shall be made pursuant to the provisions of this section.

     (b) Entire  Agreement;  Assignment.  This  Agreement  represents the entire
agreement  between the parties  hereto with respect to the subject matter hereof
and may be  amended  only by a writing  executed  by both  parties.  No right or
obligation  of either party shall be assigned by that party without prior notice
to and the written reasonable consent of the other party.

     (c) Execution.  This  Agreement may be executed by facsimile  transmission,
and in counterparts, each of which will be deemed an original.

     (d) Law Governing this  Agreement.  This Agreement shall be governed by and
construed in accordance with the laws of the State of New York without regard to
principles of conflicts of laws.  Any action brought by either party against the
other  concerning  the  transactions  contemplated  by this  Agreement  shall be
brought only in the state courts of New York or in the federal courts located in
the state of New York. The parties and the individuals  executing this Agreement
and  other  agreements  on  behalf  of  the  Company  agree  to  submit  to  the
jurisdiction of such courts and waive trial by jury. The prevailing  party shall
be entitled to recover from the other party its reasonable  attorney's  fees and
costs.  In the event that any provision of this Agreement or any other agreement
delivered  in  connection   herewith  is  invalid  or  unenforceable  under  any
applicable  statute  or  rule  of law,  then  such  provision  shall  be  deemed
inoperative  to the extent that it may  conflict  therewith  and shall be deemed
modified to conform with such statute or rule of law. Any such  provision  which
may prove invalid or  unenforceable  under any law shall not affect the validity
or enforceability of any other provision of any agreement.

     (e) Specific Enforcement,  Consent to Jurisdiction.  The Company and Holder
acknowledge and agree that irreparable  damage would occur in the event that any
of the provisions of this Agreement were not performed in accordance  with their
specific terms or were  otherwise  breached.  It is accordingly  agreed that the
parties  shall be entitled to an injunction  or  injunctions  to prevent or cure
breaches of the  provisions of this  Agreement and to enforce  specifically  the
terms and  provisions  hereof or  thereof,  this being in  addition to any other
remedy to which any of them may be entitled by law or equity. Subject to Section
9(d) hereof,  each of the Company and Holder  hereby  waives,  and agrees not to
assert  in any  such  suit,  action  or  proceeding,  any  claim  that it is not
personally  subject to the jurisdiction of such court,  that the suit, action or
proceeding  is brought in an  inconvenient  forum or that the venue of the suit,
action or proceeding is improper.  Nothing in this Section shall affect or limit
any right to serve process in any other manner permitted by law.
     


     IN WITNESS  WHEREOF,  the parties  hereto have caused this Exchange  Rights
Agreement to be executed by the undersigned,  thereunto duly  authorized,  as of
the date first set forth above.

                                          NCT GROUP, INC.



                                          By:_________________________________



- -------------------------------------  ------------------------------------
AUSTOST ANSTALT SCHAAN - Holder           BALMORE S.A. - Holder



- -------------------------------------  ------------------------------------
AMRO INTERNATIONAL, S.A. - Holder         THE GROSS FOUNDATION, INC. - Holder



- -------------------------------------  ------------------------------------
NESHER LTD. - Holder                      TALBIYA B. INVESTMENTS LTD. - Holder



- -------------------------------------  ------------------------------------
LEVAL TRADING, INC. - Holder              UNITED SECURITIES SERVICES, INC.
                                          - Holder



- -------------------------------------  ------------------------------------
ICT N.V. - Holder                         LIBRA FINANCE, S.A. - Holder



      Artera Group, Inc.  acknowledges the foregoing Exchange Rights Agreement
and agrees to  cooperate  with all parties  thereto to  effectuate  the timely
compliance with the terms thereof by NCT Group, Inc. and the Holders.

                                    ARTERA GROUP, INC.


                                    By:___________________________________






                   SCHEDULE A TO EXCHANGE RIGHTS AGREEMENT

- --------------------------------------------------------------------------------
HOLDER                          NUMBER OF       STATED VALUE    CERTIFICATE
                                SHARES OF                       NUMBER
                                 PREFERRED STOCK
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
AUSTOST ANSTALT SCHAAN          1,077           $1,077,000      P23 and P24
7440 Fuerstentum
Lichenstein, Landstrasse 163
Fax: 011-431-534532895
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
BALMORE, S.A.                   1,077           $1,077,000      P21 and P22
P.O. Box 4603
Zurich, Switzerland
Fax: 011-411-201-6262
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
AMRO INTERNATIONAL, S.A.        471             $471,000        P25 and P26
C/o Ultra Finanz
Grossmuenster Platz 6
Zurich, Switzerland CH8022
Fax: 011-411-262-5512
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
THE GROSS FOUNDATION, INC.      70              $70,000         P31
1660 49th Street
Brooklyn, New York
Fax: 718-851-3511
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
LEVAL TRADING, INC.             260             $260,000        P32 and P33
C/o Thierry Ulmann
14 rue du Conseil-General
CH-1205, Geneva, Switzerland
Fax: 011-4122-321-0807
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
NESHER LTD.                     107             $107,000        P27 and P28
Ragnall House, 18 Peel Road Douglas, Isle of Man 1M1 4L2, United Kingdom Fax:
011-44-1624-661594
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
TALBIYA B. INVESTMENTS LTD.     116             $116,000        P29 and P30
Ragnall House, 18 Peel Road Douglas, Isle of Man 1M1 4L2, United Kingdom Fax:
011-44-1624-661594
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
UNITED SECURITIES SERVICES,     21              $21,000         P35
INC.
135 West 50th Street, Suite
1700
New York, New York 10020
Fax: 212-541-4410
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
ICT N.V.                        77              $77,000         P36
Antwerp Tower
De Keyserlei 5 Box 59
2018 Antwerp, Belgium
Fax: 011-32-3-233-2680
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
LIBRA FINANCE, S.A.             1,000           $1,000,000      P3 and P6
P.O. Box 4603
Zurich, Switzerland
Fax: 011-411-201-6262
- --------------------------------------------------------------------------------






                               NOTICE OF EXCHANGE

(To be executed by the  Registered  Holder in order to exchange the  Preferred
Shares)


     The  undersigned  hereby elects to exchange  $_________ of the Stated Value
and  $_________ of the accrued  dividends due on the Preferred  Shares issued by
Artera Group,  Inc. on  ___________,  2001 into Shares of Common Stock of Artera
Group, Inc. (the "Company")  according to the conditions set forth in such Note,
as of the date written below.



Date of Exchange:_______________________________________________________________


Exchange Price:_________________________________________________________________


Shares To Be Delivered:_________________________________________________________


Signature:______________________________________________________________________


Print Name:_____________________________________________________________________


Address:________________________________________________________________________


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