SUBSCRIPTION AGREEMENT


Dear Subscriber:

     You (the "Subscriber") hereby agree to purchase,  and Artera Group, Inc., a
Delaware  corporation (the "Company")  hereby agrees to issue and to sell to the
Subscriber,  6% Convertible  Notes (the "Notes")  convertible in accordance with
the terms  thereof  into shares of the  Company's  $0.001 par value common stock
(the  "Company  Shares")  for  the  aggregate  consideration  set  forth  on the
signature  page  hereof  ("Purchase  Price").  The form of  Convertible  Note is
annexed hereto as Exhibit A. The principal  amount of the Notes will be equal to
125% of the Purchase  Price.  The Company Shares  included in the Securities (as
hereinafter defined) are sometimes referred to herein as the "Shares" or "Common
Stock".  (The Notes and the Company Shares are  collectively  referred to herein
as, the "Securities").  Upon acceptance of this Agreement by the Subscriber, the
Company shall issue and deliver to the  Subscriber  the Note against  payment of
the Purchase Price.

     The following terms and conditions shall apply to this subscription.

     1.  Subscriber's  Representations  and  Warranties.  The Subscriber  hereby
represents and warrants to and agrees with the Company that:

     (a) Investment  Purpose.  The  Subscriber is acquiring the Notes,  and upon
conversion of the Notes, will acquire the Company Shares then issuable,  for its
own account for  investment  purposes only and not with a view  towards,  or for
resale in  connection  with,  the public sale or  distribution  thereof,  except
pursuant to sales registered or exempted under the 1933 Act; provided,  however,
that by making the representations herein, the Subscriber does not agree to hold
the  Securities for any minimum or other specific term and reserves the right to
dispose of the  Securities  at any time in  accordance  with or  pursuant  to an
effective  registration  statement  under  the 1933 Act and in  compliance  with
applicable state securities laws or an exemption from such registration.

     (b) Information on Company. The Subscriber,  and its advisors, if any, have
been furnished with written information  relating to the business of the Company
and such other information  concerning its operations,  financial  condition and
other matters as the Subscriber has requested.  The Subscriber and its advisors,
if any,  have been  afforded the  opportunity  to ask  questions of the Company.
Neither such inquiries nor any other due diligence  investigations  conducted by
the Subscriber or its advisors,  if any, or their  representatives shall modify,
amend or affect the Subscriber's right to rely on the Company's  representations
and warranties contained in Section 2 below. The Subscriber understands that its
investment in the Notes,  the Company Shares and the Exchange  Shares involves a
high degree of risk. The Subscriber  has sought such  accounting,  legal and tax
advice as it has considered  necessary to make an informed  investment  decision
with  respect  to its  acquisition  of the  Notes,  the  Company  Shares and the
Exchange Shares.  The Subscriber has considered all factors the Subscriber deems
material in deciding on the  advisability  of investing in the Securities  (such
information in writing is collectively, the "Written Information").

     (c) Information on Subscriber;  Accredited  Investor Status. The Subscriber
is an "accredited investor", as such term is defined in Regulation D promulgated
by the Commission under the Securities Act of 1933, as amended (the "1933 Act"),
is experienced in investments and business  matters,  has made  investments of a
speculative nature and has purchased securities of United States  publicly-owned
companies in private placements in the past and, with its  representatives,  has
such knowledge and experience in financial, tax and other business matters as to
enable the Subscriber to utilize the  information  made available by the Company
to evaluate the merits and risks of and to make an informed  investment decision
with  respect  to  the  proposed   purchase,   which  represents  a  speculative
investment.  The Subscriber has the authority and is duly and legally  qualified
to purchase and own the  Securities.  The Subscriber is able to bear the risk of
such investment for an indefinite period and to afford a complete loss thereof.

     (d) Compliance with  Securities Act. The Subscriber  understands and agrees
that the Securities  are being offered and sold to it in a private  placement in
reliance on specific  exemptions  from the  registration  requirements of United
States federal and state securities laws and that the Company is relying in part
upon the truth and  accuracy  of,  and the  Subscriber's  compliance  with,  the
representations,  warranties, agreements,  acknowledgments and understandings of
the Subscriber set forth herein in order to determine the  availability  of such
exemptions and the eligibility of such Subscriber to acquire such securities.

     (e) No  Governmental  Review.  The  Subscriber  understands  that no United
States federal or state agency or any other  government or  governmental  agency
has passed on or made any  recommendation  or endorsement of the Securities,  or
the fairness or suitability of the investment in the  Securities,  nor have such
authorities  passed  upon  or  endorsed  the  merits  of  the  offering  of  the
Securities.

     (f) No Broker Commissions or Finder Fees. To the best of its knowledge, the
Subscriber  has taken no action which would give rise to any claim by any person
for brokerage commissions,  finders' fees or the like relating to this Agreement
or the transactions contemplated hereby except as described in Section 6 hereof.

     (g) Buyer Liquidity. The Subscriber has adequate means of providing for its
current needs and foreseeable financial contingencies.

     (h)  Transfer or Resale of  Securities.  The  Subscriber  understands  that
except as  provided  herein (i) the  Securities  have not been and are not being
registered  under  the 1933 Act or any  state  securities  laws,  and may not be
offered for sale, sold,  assigned,  transferred or otherwise  disposed of by the
Subscriber  unless  (a)  subsequently  registered  under  the 1933 Act and state
securities  laws, if applicable,  (b) the Subscriber shall have delivered to the
Company an opinion of counsel, in form and substance reasonably  satisfactory to
the  Company,  to  the  effect  that  such  securities  to  be  sold,  assigned,
transferred  or  otherwise  disposed of may be sold,  assigned,  transferred  or
otherwise  disposed of pursuant to an exemption from such  registration,  or (c)
the Subscriber  provides the Company with written customary  assurance that such
securities can be sold, assigned,  transferred or otherwise disposed of pursuant
to Rule 144 promulgated  under the 1933 Act (or a successor rule thereto) ("Rule
144");  and (ii) any sale of such securities made in reliance on Rule 144 may be
made only in accordance  with the terms of Rule 144 and further,  if Rule 144 is
not applicable,  any resale of such securities under  circumstances in which the
seller  (or the  person  through  whom the sale is made)  may be deemed to be an
underwriter  (as that term is  defined in the 1933 Act) may  require  compliance
with some other exemption under the 1933 Act or the rules and regulations of the
SEC thereunder.

     (i) Company  Shares  Legend.  The Company  Shares shall bear the  following
legend:

          "THE SHARES  REPRESENTED BY THIS  CERTIFICATE HAVE NOT BEEN REGISTERED
          UNDER THE  SECURITIES  ACT OF 1933, AS AMENDED,  OR  APPLICABLE  STATE
          SECURITIES LAWS. THE SHARES HAVE BEEN ACQUIRED FOR INVESTMENT PURPOSES
          ONLY AND MAY NOT BE OFFERED FOR SALE, SOLD,  TRANSFERRED,  ASSIGNED OR
          OTHERWISE  DISPOSED  OF IN THE  ABSENCE OF AN  EFFECTIVE  REGISTRATION
          STATEMENT  FOR THE  SECURITIES  UNDER THE  SECURITIES  ACT OF 1933, AS
          AMENDED,  AND  APPLICABLE  STATE  SECURITIES  LAWS,  OR AN  OPINION OF
          COUNSEL,   REASONABLY   SATISFACTORY  TO  ARTERA  GROUP,   INC.,  THAT
          REGISTRATION  IS NOT  REQUIRED  UNDER  SAID  ACT OR  APPLICABLE  STATE
          SECURITIES LAWS OR UNLESS SOLD PURSUANT TO RULE 144 UNDER SAID ACT. "

     (j) Note Legend. The Note shall bear the following legend:

          "THIS NOTE AND THE SHARES  ISSUABLE UPON  CONVERSION OF THIS NOTE HAVE
          NOT BEEN REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS AMENDED,  OR
          APPLICABLE  STATE  SECURITIES  LAWS. THIS NOTE AND THE SHARES ISSUABLE
          UPON  CONVERSION  OF THIS  NOTE  HAVE  BEEN  ACQUIRED  FOR  INVESTMENT
          PURPOSES  ONLY AND MAY NOT BE  OFFERED  FOR SALE,  SOLD,  TRANSFERRED,
          ASSIGNED  OR  OTHERWISE  DISPOSED  OF IN THE  ABSENCE OF AN  EFFECTIVE
          REGISTRATION  STATEMENT FOR THE SECURITIES UNDER THE SECURITIES ACT OF
          1933, AS AMENDED,  AND APPLICABLE STATE SECURITIES LAWS, OR AN OPINION
          OF  COUNSEL,  REASONABLY  SATISFACTORY  TO ARTERA  GROUP,  INC.,  THAT
          REGISTRATION  IS NOT  REQUIRED  UNDER  SAID  ACT OR  APPLICABLE  STATE
          SECURITIES LAWS OR UNLESS SOLD PURSUANT TO RULE 144 UNDER SAID ACT."

     (k)  Communication  of Offer. The offer to sell the Securities was directly
communicated to the Subscriber.  At no time was the Subscriber presented with or
solicited by any leaflet,  newspaper or magazine  article,  radio or  television
advertisement,  or any other form of general advertising or solicited or invited
to attend a promotional  meeting  otherwise than in connection and  concurrently
with such communicated offer.

     (l) Powers; Authorization; Enforceability. The Subscriber has all corporate
or company  power and authority to enter into and perform this  Agreement.  This
Agreement has been duly and validly authorized, executed and delivered on behalf
of the  Subscriber  and is a  valid  and  binding  agreement  of the  Subscriber
enforceable in accordance with its terms,  except as such  enforceability may be
limited  by  general   principles   of  equity   and   bankruptcy,   insolvency,
reorganization,  moratorium,  liquidation and other similar laws relating to, or
affecting  generally  the  enforcement  of,  applicable  creditors'  rights  and
remedies.

     (m) Conflicts. To the best knowledge of Subscriber, the execution, delivery
and performance of this Agreement by the Subscriber and the  consummation by the
Subscriber of the transactions contemplated hereby will not (i) conflict with or
violate  its  organizational  charters  or  by-laws,  or (ii)  conflict  with or
constitute  a default  (or an event  which with  notice or lapse of time or both
would  become a default)  under,  or give to others  any rights of  termination,
amendment,   acceleration  or  cancellation  of,  any  agreement,  indenture  or
instrument to which the Subscriber is a party.

     (n)  Correctness of  Representations.  The Subscriber  represents  that the
foregoing  representations  and  warranties  are true and correct as of the date
hereof and,  unless the Subscriber  otherwise  notifies the Company prior to the
Closing  Date (as  hereinafter  defined),  shall be true and  correct  as of the
Closing Date. The foregoing  representations  and  warranties  shall survive the
Closing Date.

     2. Company  Representations  and  Warranties.  The Company  represents  and
warrants to and agrees with the Subscriber that:

     (a) Due  Incorporation.  The  Company  and  each of its  subsidiaries  is a
corporation duly organized, validly existing and in good standing under the laws
of the respective  jurisdictions of their  incorporation  and have the requisite
corporate  power to own their  properties  and to carry on their business as now
being conducted. The Company and each of its subsidiaries is duly qualified as a
foreign  corporation to do business and is in good standing in each jurisdiction
where the nature of the business  conducted  or property  owned by it makes such
qualification necessary,  other than those jurisdictions in which the failure to
so qualify would not have a material adverse effect on the business,  operations
or prospects or condition (financial or otherwise) of the Company.

     (b) Outstanding  Stock. All issued and outstanding  shares of capital stock
of the Company and each of its subsidiaries has been duly authorized and validly
issued and are fully paid and non-assessable.

     (c) Authority;  Enforceability.  This  Agreement has been duly  authorized,
executed  and  delivered  by the Company  and is a valid and  binding  agreement
enforceable in accordance  with its terms,  subject to  bankruptcy,  insolvency,
fraudulent  transfer,  reorganization,  moratorium  and similar  laws of general
applicability  relating  to or  affecting  creditors'  rights  generally  and to
general  principles  of equity;  and the  Company has full  corporate  power and
authority  necessary to enter into this Agreement and to perform its obligations
hereunder and all other agreements entered into by the Company relating hereto.

     (d) Additional Issuances. There are no outstanding agreements or preemptive
or  similar  rights  affecting  the  Company's  common  stock or  equity  and no
outstanding rights,  warrants or options to acquire, or instruments  convertible
into or exchangeable  for, or agreements or  understandings  with respect to the
sale or issuance of any shares of common stock or equity of the Company or other
equity interest in any of the  subsidiaries of the Company,  except as described
in the Written Information.

     (e) Consents.  Except as specifically  contemplated by the Agreement and as
required under the 1933 Act,  applicable  state  securities  laws and applicable
laws of foriegn jurisdictions,  no consent, approval,  authorization or order of
any court,  governmental  agency or body or arbitrator having  jurisdiction over
the  Company,  or any of its  affiliates,  the  NASD,  NASDAQ,  the  Alternative
Investment  Market  of the  London  Stock  Exchange  ("AIM")  or  the  Company's
Shareholders  is  required  for  execution  of this  Agreement,  and  all  other
agreements  entered into by the Company  relating  thereto,  including,  without
limitation  issuance  and sale of the  Securities,  and the  performance  of the
Company's obligations hereunder.

     (f) No Violation or Conflict.  Assuming the  representations and warranties
of the Subscriber in Section 1 are true and correct and the Subscriber  complies
with its obligations under this Agreement,  neither the issuance and sale of the
Securities nor the performance of its  obligations  under this Agreement and all
other  agreements  entered into by the Company  relating  thereto by the Company
will:


     (i) violate,  conflict with, result in a breach of, or constitute a default
(or an event  which with the giving of notice or the lapse of time or both would
be  reasonably  likely  to  constitute  a  default)  under (A) the  articles  of
incorporation,  charter or bylaws of the Company or any of its subsidiaries, (B)
to the Company's  knowledge,  any decree,  judgment,  order, law, treaty,  rule,
regulation or determination applicable to the Company or any of its subsidiaries
of any court,  governmental  agency or body, or arbitrator  having  jurisdiction
over the Company or any of its  subsidiaries or over the properties or assets of
the Company or any of its  subsidiaries,  (C) the terms of any bond,  debenture,
note or any other evidence of  indebtedness,  or any agreement,  stock option or
other  similar  plan,  indenture,  lease,  mortgage,  deed  of  trust  or  other
instrument to which the Company or any of its  subsidiaries is a party, by which
the  Company  or  any of its  subsidiaries  is  bound,  or to  which  any of the
properties  of the Company or any of its  subsidiaries  is  subject,  or (D) the
terms of any  "lock-up"  or similar  provision  of any  underwriting  or similar
agreement to which the Company, or any of its subsidiaries is a party; or

     (ii)  result  in  the  creation  or  imposition  of  any  lien,  charge  or
encumbrance  upon the Securities or any of the assets of the Company,  or any of
its subsidiaries.

     (g) The Securities. The Securities upon issuance:

     (i) are,  or will be,  free and  clear of any  security  interests,  liens,
claims or other  encumbrances,  subject to restrictions  upon transfer under the
1933 Act and State laws;

     (ii) have been, or will be, duly and validly  authorized and on the date of
issuance and on the Closing Date, as hereinafter  defined, and the date the Note
is converted,  the Securities  will be duly and validly  issued,  fully paid and
nonassessable  (and if registered  pursuant to the 1933 Act, and resold pursuant
to an effective  registration  statement will be free trading and  unrestricted,
provided   that  the   Subscriber   complies   with  the   Prospectus   delivery
requirements);

     (iii) will not have been issued or sold in violation of any  preemptive  or
other similar rights of the holders of any securities of the Company; and

     (iv) will not subject the holders  thereof to personal  liability by reason
of being such holders.

     (h) Litigation. Except as disclosed in the SEC Documents (as defined below)
filed prior to the date of this  Agreement,  there is no pending or, to the best
knowledge of the Company,  threatened action, suit,  proceeding or investigation
before any court, governmental agency or body, or arbitrator having jurisdiction
over the Company, or any of its affiliates,  including its corporate parent, NCT
Group,  Inc., a Delaware  corporation,  that would  affect the  execution by the
Company  or  the  performance  by the  Company  of its  obligations  under  this
Agreement, and all other agreements entered into by the Company relating hereto.
Except as disclosed in the Written  Information,  there is no pending or, to the
best  knowledge  of  the  Company,   threatened  action,  suit,   proceeding  or
investigation  before  any court,  governmental  agency or body,  or  arbitrator
having jurisdiction over the Company, or any of its affiliates, subsidiaries, or
NCTGroup,  Inc.,  relating to the Company or any of its  directors  or officers.
"SEC Documents" shall mean all reports,  schedules,  forms, statements and other
documents  required  to be filed by NCT  Group,  Inc.  with the  Securities  and
Exchange  Commission (the "SEC")  pursuant to the reporting  requirements of the
1934 Act  (including  all exhibits  included  therein and financial  statements,
schedules and documents incorporated by reference therein).

     (i) No Market  Manipulation.  The Company has not taken, and will not take,
directly or  indirectly,  any action  designed to, or that might  reasonably  be
expected to, cause or result in  stabilization  or  manipulation of the price of
the  common  stock  of the  Company  to  facilitate  the sale or  resale  of the
Securities or affect the price at which the Securities may be issued.

     (j) Information  Concerning Company.  The Written Information  contains all
material  information  relating to the Company and its  operations and financial
condition  as of their  respective  dates  which  information  is required to be
disclosed therein. Since the date of the Written Information,  there has been no
material  adverse  change in the  Company's  business,  financial  condition  or
affairs not disclosed in the Reports.  The Written  Information does not contain
any  untrue  statement  of a  material  fact or omit to  state a  material  fact
required to be stated  therein or necessary to make the  statements  therein not
misleading.

     (k) Dilution. The number of Shares issuable upon conversion of the Note may
increase substantially in certain circumstances,  including, but not necessarily
limited  to, the  circumstance  wherein the  trading  price of the Common  Stock
declines prior to conversion of the Note. The Company's  executive  officers and
directors have studied and fully  understand the nature of the Securities  being
sold hereby and recognize that they have a potential  dilutive effect. The board
of directors of the Company has concluded,  in its good faith business judgment,
that  such  issuance  is in the  best  interests  of the  Company.  The  Company
specifically   acknowledges  that  its  obligation  to  issue  the  Shares  upon
conversion  of the Note is binding upon the Company and  enforceable,  except as
otherwise  described in this Subscription  Agreement or the Note,  regardless of
the  dilution  such  issuance  may  have on the  ownership  interests  of  other
shareholders of the Company.

     (l) Stop Transfer.  The Securities are restricted securities as of the date
of this  Agreement.  The Company will not issue any stop transfer order or other
order  impeding  the sale  and  delivery  of the  Securities,  except  as may be
required by federal securities laws.



     (m) Defaults.  Neither the Company nor any of its subsidiaries,  affiliates
or NCT Group, Inc., is in violation of its Articles of Incorporation or By-Laws.
Neither the Company nor any of its  subsidiaries  is (i) in default  under or in
violation of any other  material  agreement or instrument to which it is a party
or by which it or any of its properties are bound or affected,  which default or
violation would have a material  adverse effect on the Company,  (ii) in default
with  respect  to any order of any court,  arbitrator  or  governmental  body or
subject to or party to any order of any court or governmental  authority arising
out of any action,  suit or proceeding under any statute or other law respecting
antitrust,  monopoly, restraint of trade, unfair competition or similar matters,
or (iii) to its knowledge in violation of any statute, rule or regulation of any
governmental  authority which violation would have a material  adverse effect on
the Company.

     (n) No Integrated Offering. Neither the Company, nor any of its affiliates,
subsidiaries nor NCT Group,  Inc., nor any person acting on its or their behalf,
has directly or indirectly made any offers or sales of any security or solicited
any offers to buy any security under circumstances that would cause the offering
of the  Securities  pursuant  to this  Agreement  to be  integrated  with  prior
offerings  by the  Company  for  purposes  of  the  1933  Act or any  applicable
stockholder approval provisions,  including, without limitation, under the rules
and regulations of the Bulletin  Board,  as applicable,  nor will the Company or
any of its affiliates,  subsidiaries or NCT Group, Inc. take any action or steps
that would cause the  offering of the  Securities  to be  integrated  with other
offerings.

     (o)  No  General  Solicitation.   Neither  the  Company,  nor  any  of  its
subsidiaries,  nor to its  knowledge,  any person acting on its or their behalf,
has engaged in any form of general  solicitation or general  advertising (within
the meaning of Regulation D under the Act) in connection  with the offer or sale
of the Securities.

     (p) No Undisclosed Liabilities. To the Company's knowledge, the Company has
no  liabilities  or  obligations  which  are  material,  individually  or in the
aggregate, which are not disclosed in the Written Information,  other than those
incurred in the ordinary  course of the Company's  businesses  since the date of
incorporation of the Company and which, individually or in the aggregate,  would
not  reasonably be expected to have a material  adverse  effect on the Company's
financial condition.

     (q) No Undisclosed Events or Circumstances. Since the date of incorporation
of the Company,  no event or circumstance has occurred or exists with respect to
the Company or its businesses,  properties,  prospects,  operations or financial
condition,  that,  under  applicable  law, rule or regulation,  requires  public
disclosure or announcement prior to the date hereof by the Company but which has
not been so publicly announced or disclosed in the Reports.

     (r) Disability.  The Company has no knowledge of any impediment which would
or could prevent the Common Stock from becoming publicly tradable on the AIM.

     (s)  Correctness  of  Representations.  The  Company  represents  that  the
foregoing  representations  and  warranties  are true and correct as of the date
hereof in all  material  respects,  will be true and  correct as of the  Closing
Date, and,  unless the Company  otherwise  notifies the Subscriber  prior to the
Closing  Date,  shall be true and  correct in all  material  respects  as of the
Closing Date. The foregoing  representations  and  warranties  shall survive the
Closing Date.



     3. Regulation D Offering;  Opinion. This Offering is being made pursuant to
the exemption from the registration provisions of the Securities Act of 1933, as
amended,  afforded  by Section  4(2)  thereof  and/or Rule 506 of  Regulation  D
promulgated thereunder. On the Closing Date, the Company will provide an opinion
acceptable  to  Subscriber  from the  Company's  legal  counsel  opining  on the
availability  of the  Regulation  D  exemption  as it  relates  to the offer and
issuance of the  Securities.  A form of the legal  opinion is annexed  hereto as
Exhibit C. The Company will provide, at the Company's expense,  such other legal
opinions in the future as are  reasonably  necessary  for the  conversion of the
Note.

     4.  Reissuance of Securities.  The Company  agrees to reissue  certificates
representing  the Securities  without the legends set forth in Sections 1(i) and
1(j) above (a) at such time as the holder  thereof is  permitted to and disposes
of such Securities pursuant to Rule 144(d) and/or Rule 144(k) under the 1933 Act
in the opinion of counsel  reasonably  satisfactory to the Company,  or (b) upon
resale subject to an effective  registration  statement after the Securities are
registered  under  the 1933  Act.  The  Company  agrees  to  cooperate  with the
Subscriber  in  connection  with all  resales  pursuant  to Rule 144(d) and Rule
144(k) and provide legal opinions  necessary to allow such resales  provided the
Company and its counsel receive all reasonably  requested  representations  from
the  Subscriber and selling  broker,  if any. If the Company fails to remove any
legend  as  required  by this  Section  4 (a  "Legend  Removal  Failure"),  then
beginning on the tenth (10th) day following such failure,  the Company continues
to fail to remove such  legend,  the  Company  shall pay to each  Subscriber  or
assignee  holding shares subject to a Legend Removal  Failure an amount equal to
one percent (1%) of the Purchase Price of the shares subject to a Legend Removal
Failure  per day that such  failure  continues.  If during any twelve (12) month
period, the Company fails to remove any legend as required by this Section 4 for
an aggregate of thirty (30) days, each Subscriber or assignee holding Securities
subject to a Legend Removal  Failure may, at its option,  require the Company to
purchase  all or any  portion  of the  Securities  subject  to a Legend  Removal
Failure held by such  Subscriber  or assignee at a price per share equal to 120%
of the applicable Purchase Price.

     5.  Redemption.  The  Company  may not redeem the  Securities  without  the
consent of the holder of the Securities except as otherwise described herein.

     6. Fees.  The Company  shall pay to counsel to the  Subscriber  its fees of
$500 for services  rendered to Subscribers in connection with this Agreement and
the other Subscription  Agreements for aggregate  subscription  amounts of up to
$300,000 of Purchase  Price (the  "Offering").  The legal fees for the  Offering
must be paid on the Closing Date with respect to the Notes issued on such date.

     7.  Covenants of the  Company.  The Company  covenants  and agrees with the
Subscriber as follows:


     (a) The Company  will  advise the  Subscriber,  promptly  after it receives
notice  of  issuance  by the  Securities  and  Exchange  Commission,  any  state
securities  commission or any other domestic or foreign regulatory  authority or
trading  or  listing  market  of any stop  order or of any order  preventing  or
suspending any offering of any  securities of the Company,  or of the suspension
of the  qualification of the Common Stock of the Company for offering or sale in
any jurisdiction, or the initiation of any proceeding for any such purpose.

     (b) The Company  shall  promptly  secure the listing of the Company  Shares
upon each  domestic  and foreign  securities  exchange,  or quotation or listing
system,  if any,  upon which shares of Common Stock are then listed  (subject to
official  notice of  issuance)  and shall  maintain  such listing so long as any
other  shares of Common  Stock  shall be so listed.  After  becoming  listed for
quotation or trading,  the Company will maintain the listing of its Common Stock
on the NASD OTC Bulletin Board,  NASDAQ SmallCap Market,  NASDAQ National Market
System,  American Stock Exchange,  New York Stock Exchange or the AIM, whichever
of the foregoing is at the time the principal trading exchange or market for the
Common Stock, or such other principal  market or exchange where the Common Stock
is listed or traded (the  "Principal  Market"),  and will comply in all respects
with the Company's  reporting,  filing and other obligations under the bylaws or
rules of the  Principal  Market,  as  applicable.  The Company  will provide the
Subscriber  copies of all  notices  it  receives  notifying  the  Company of the
threatened and actual delisting of the Common Stock from any Principal Market.

     (c)  The  Company  shall  notify  the  SEC,  NASD  and   applicable   state
authorities,  in  accordance  with  their  requirements,   of  the  transactions
contemplated  by this Agreement,  and shall take all other necessary  action and
proceedings  as may be  required  and  permitted  by  applicable  law,  rule and
regulation, for the legal and valid issuance of the Securities to the Subscriber
and promptly provide copies thereof to Subscriber.

     (d) Until at least two (2) years after the listing of the Common Stock on a
Principal Market, the Company will comply in all respects with its reporting and
filing  obligations  which are necessary to maintain  such listing.  The Company
will not take any action or file any document  (whether or not  permitted by the
Act or the  Exchange  Act or the rules  thereunder)  or any other rule or law to
terminate  or suspend  its  listing on a  Principal  Market or to  terminate  or
suspend  its  reporting  and filing  obligations  under said Acts or rule or law
until two (2) years after the sale by the  Subscribers of all the Company Shares
and Securities issuable by the Company pursuant to this Agreement.

     (e) The Company  undertakes  to use the cash  proceeds of the  Subscriber's
funds for general  working  capital.  The Purchase Price may not and will not be
used to pay debt or non-trade  obligations  outstanding  on or after the Closing
Date.

     (f) Subject to there being  sufficient  authorized  but unissued  shares of
Common  Stock,  the  Company  undertakes  to reserve  pro rata on behalf of each
holder of a Note from its  authorized  but unissued  Common Stock,  at all times
that Notes remain outstanding,  a number of Common Shares equal to not less than
140% of the amount of Common  Shares  necessary  to allow each such holder to be
able to convert all such  outstanding  Notes, at the then applicable  Conversion
Price.  The  Company  further  agrees that Common  Shares  once  reserved,  will
continue to be reserved until the Notes have been fully converted.

     (g) The  Company  undertakes  to use its best  efforts to  arrange  for the
Common Stock to be tradable on the AIM no later than July 9, 2001.

     8. Covenants of the Company and Subscriber Regarding Indemnification.

     (a) The Company agrees to indemnify,  hold  harmless,  reimburse and defend
Subscriber,   Subscriber'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 Subscriber 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 Subscribers
relating hereto.

     (b) The Subscriber 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 Subscriber
or breach by Subscriber 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  Subscriber  of any covenant or  undertaking  to be performed by
Subscriber  hereunder,  or any other  agreement  entered into by the Company and
Subscribers relating hereto.

     9.1. Conversion of Note.

     (a) Upon the conversion of the Note or part thereof,  the Company shall, at
its own cost and expense,  take all necessary action  (including the issuance of
an opinion of counsel) to assure that the Company's  transfer  agent shall issue
stock  certificates  in the name of  Subscriber  (or its  nominee) or such other
persons as designated by Subscriber and in such denominations to be specified at
conversion  representing the number of shares of common stock issuable upon such
conversion.   The  Company  warrants  that  no  instructions  other  than  these
instructions  have been or will be given to the transfer  agent of the Company's
Common Stock and that the Shares will be  unlegended,  free-trading,  and freely
transferable,   and  will  not  contain  a  legend  restricting  the  resale  or
transferability  of the  Company  Shares  provided  the  Shares  are being  sold
pursuant to an effective  registration  statement covering the Shares to be sold
or are otherwise exempt from registration when sold.

     (b)  Subscriber  will give notice of its  decision to exercise its right to
convert the Note or part thereof by telecopying an executed and completed Notice
of Conversion (as defined in the Note) to the Company.  The Subscriber  will not
be required to  surrender  the Note until the Note has been fully  converted  or
satisfied.  Each  date on which a Notice  of  Conversion  is  telecopied  to the
Company in accordance  with the  provisions  hereof shall be deemed a Conversion
Date.  The Company  will or cause the transfer  agent to transmit the  Company's
Common Stock  certificates  representing  the Shares issuable upon conversion of
the Note (and a Note  representing the balance of the Note not so converted,  if
requested by Subscriber)  to the  Subscriber via express  courier for receipt by
such  Subscriber  within five (5) business  days after receipt by the Company of
the Notice of Conversion (the "Delivery  Date"). To the extent that a Subscriber
elects  not  to  surrender  a  Note  for  reissuance  upon  partial  payment  or
conversion,  the Subscriber  hereby  indemnifies the Company against any and all
loss or damage attributable to a third-party claim in an amount in excess of the
actual amount then due under the Note.

     (c) The Company  understands  that a delay in the delivery of the Shares in
the form  required  pursuant to Section 9 hereof,  or the  Mandatory  Redemption
Amount  described in Section 9.2 hereof,  beyond the Delivery  Date or Mandatory
Redemption  Payment Date (as hereinafter  defined) could result in economic loss
to the Subscriber.  As compensation to the Subscriber for such loss, the Company
agrees to pay late payments to the Subscriber for late issuance of Shares in the
form required  pursuant to Section 9 hereof upon  Conversion of the Note or late
payment of the Mandatory  Redemption  Amount, in the amount of $100 per business
day after the Delivery  Date or Mandatory  Redemption  Payment Date, as the case
may be, for each $10,000 of Note principal  amount being  converted or redeemed.
The Company shall pay any payments  incurred  under this Section in  immediately
available  funds upon  demand.  Furthermore,  in addition to any other  remedies
which may be available to the  Subscriber,  in the event that the Company  fails
for any reason to effect  delivery  of the Shares by the  Delivery  Date or make
payment  by the  Mandatory  Redemption  Payment  Date,  the  Subscriber  will be
entitled to revoke all or part of the relevant  Notice of  Conversion or rescind
all or part of the notice of  Mandatory  Redemption  by  delivery of a notice to
such effect to the Company  whereupon the Company and the Subscriber  shall each
be restored to their respective  positions  immediately prior to the delivery of
such notice,  except that late payment charges  described above shall be payable
through the date notice of revocation or rescission is given to the Company.

     (d)  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 Subscriber and thus refunded to the Company.

     9.2.  Mandatory  Redemption.  In the event the Company is  prohibited  from
issuing  Shares or fails to timely deliver Shares on a Delivery Date; or for any
reason other than pursuant to the  limitations  set forth in Section 9.3 hereof,
then at the Subscriber's  election,  the Company must pay to the Subscriber five
(5) business  days after  request by the  Subscriber or on the Delivery Date (if
requested by the Subscriber) the principal  amount of the Note designated by the
Subscriber,  together  with  accrued  but unpaid  interest  thereon  ("Mandatory
Redemption  Payment").  The Mandatory Redemption Payment must be received by the
Subscriber  on the same date as the  Company  Shares  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  Note  principal  and  interest  will be deemed paid and no longer
outstanding,  and any obligation to deliver Shares with respect to conversion of
the redeemed portion of the Note shall be extinguished.

     9.3. Maximum Conversion. The Subscriber shall not be entitled to convert on
a  Conversion  Date that  amount of the Note in  connection  with that number of
shares of Common  Stock which would be in excess of the sum of (i) the number of
shares of Common Stock  beneficially  owned by the Subscriber and its affiliates
on a Conversion  Date,  and (ii) the number of shares of Common  Stock  issuable
upon the conversion of the Note with respect to which the  determination of this
proviso is being made on a Conversion  Date,  which would  result in  beneficial
ownership  by the  Subscriber  and its  affiliates  of more  than  9.99%  of the
outstanding  shares of Common Stock of the Company on such Conversion  Date. 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,  and Regulation 13d-3  thereunder.  Subject to
the foregoing,  the Subscriber shall not be limited to aggregate  conversions of
only 9.99%. The Subscriber may void the conversion  limitation described in this
Section  9.3 upon 75 days  prior  notice  to the  Company.  The  Subscriber  may
allocate  which of the equity of the Company  deemed  beneficially  owned by the
Subscriber shall be included in the 9.99% amount described above and which shall
be allocated to the excess above 9.99%.

     9.4. Injunction - Posting of Bond. The Company may not refuse conversion of
a Note  based  on any  claim  that  such  Subscriber  or any one  associated  or
affiliated with such Subscriber has been engaged in any violation of law, or for
any other reason, unless, an injunction from a court, on notice, restraining and
or enjoining  conversion  of all or part of said Note shall have been sought and
obtained and the Company posts a surety bond for the benefit of such  Subscriber
in the  amount  of 130% of the  amount  of the  Note,  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 Subscriber to the extent Subscriber obtains judgment.

     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 at its  address  set forth
below or to such other address as either party shall hereafter give to the other
by notice duly made under this Section:  (i) if to the Company, to Artera 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 Subscriber,  to the name, address and telecopy
number set forth on the signature page hereto, with a copy by telecopier only to
Grushko & Mittman, P.C., 551 Fifth Avenue, Suite 1601, New York, New York 10176,
telecopier number: (212) 697-3575. Any notice that may be given pursuant to this
Agreement,  or any document  delivered in  connection  with the foregoing may be
given by the Subscriber 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 Subscriber on a holiday date
that precedes such notice.  Any notice  received by the Subscriber on any of the
aforedescribed  holidays  may be deemed by the  Subscriber  to be  received  and
effective  as if such notice had been  received on the first  business day after
the holiday.

     (b) Closing. The consummation of the transactions contemplated herein shall
take place at the offices of Grushko & Mittman,  P.C.,  551 Fifth Avenue,  Suite
1601,  New York,  New York 10176,  upon the  satisfaction  of all  conditions to
Closing set forth in this  Agreement.  The  closing  date shall be the date that
subscriber  funds  representing the net amount due the Company from the Purchase
Price are transmitted by wire transfer to the Company (the "Closing Date").

     (c) 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 consent of the other party.

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

     (e) 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. Both 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.

     (f)  Specific  Enforcement,   Consent  to  Jurisdiction.  The  Company  and
Subscriber  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  10(e)  hereof,  each of the Company and  Subscriber
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.

     (g) Confidentiality.  The Company agrees that it will not disclose publicly
or  privately  the  identity of the  Subscriber  unless  expressly  agreed to in
writing by the Subscriber or only to the extent required by law.



     (h) Automatic  Termination.  This Agreement shall  automatically  terminate
without any further  action of either party hereto if the Closing shall not have
occurred by the tenth (10th)  business day following the date this  Agreement is
accepted by the Subscriber.

                      [THIS SPACE INTENTIONALLY LEFT BLANK]




     Please acknowledge your acceptance of the foregoing  Subscription Agreement
by signing and returning a copy to the  undersigned  whereupon it shall become a
binding agreement between us.

                                     ARTERA GROUP, INC.
                                     A Delaware Corporation



                                     By:_________________________________


                                     Dated: May 25, 2001



Purchase Price: $ 235,000_________________
                --------------------------

Note Principal: One Hundred and Twenty-Five Percent (125%) of Purchase Price
                ------------------------------------------------------------



ACCEPTED: Dated as of May 25, 2001



ALPHA CAPITAL AKTIENGESELLSCHAFT - Subscriber A Lichtenstein corporation
Pradafant 7, 9490 Furstentums Vaduz, Lichtenstein
Fax: 011-42-32323196



By:______________________________


                                     ACKNOWLEDGED:


                                     By:____________________________________
                                          NCT GROUP, INC.





     Please acknowledge your acceptance of the foregoing  Subscription Agreement
by signing and returning a copy to the  undersigned  whereupon it shall become a
binding agreement between us.

                                     ARTERA GROUP, INC.
                                     A Delaware Corporation



                                     By:_________________________________


                                     Dated: May 25, 2001



Purchase Price: $ 65,000_________________

Note Principal: One Hundred and Twenty-Five Percent (125%) of Purchase Price
                ------------------------------------------------------------



ACCEPTED: Dated as of May 25, 2001



AMRO INTERNATIONAL, S.A. - Subscriber
C/O Ultra Finanz
Grossmuenster Platz 6
Zurich, Switzerland CH8022
Fax: 011-411-262-5512



By:______________________________


                                     ACKNOWLEDGED:


                                     By:____________________________________
                                          NCT GROUP, INC.