AT&T CORP
SC 13D, EX-4, 2000-08-22
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
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                                 SUBSCRIPTION AGREEMENT

                  SUBSCRIPTION AGREEMENT (this "AGREEMENT"), dated as of August
11, 2000, among Net2Phone, Inc., a Delaware corporation (the "COMPANY") and AT&T
Corp., a New York corporation ("AT&T").

                  WHEREAS, AT&T has agreed to purchase (the "PURCHASE")
14,900,000 shares of Class A common stock, par value $.01, of the Company
("CLASS A STOCK") pursuant to a Stock Purchase Agreement (the "STOCK PURCHASE
AGREEMENT") by and between AT&T, IDT Corporation ("IDT") and IDT Investments
Inc. ("IDT Investments");

                  WHEREAS, upon the terms and subject to the conditions of this
Agreement, Buyer desires to purchase 4,000,000 shares of Class A Stock and the
Company desires to sell 4,000,000 shares of Class A Stock to Buyer;

                  NOW, THEREFORE, the Company and AT&T hereby agree as follows:

1.   SUBSCRIPTION.

     1.1.  SUBSCRIPTION  FOR CLASS A STOCK.  Upon the terms and  subject  to the
conditions  of this  Agreement,  the Company shall issue and sell and AT&T shall
purchase from the Company 4,000,000 shares of Class A Stock (the "BUYER SHARES")
at a price of $75.00 per share.

     1.2. BUYER. Pursuant to the terms of Section 9.2 hereof, AT&T may assign to
a  directly  or  indirectly  majority-owned  subsidiary  its  rights  under this
Agreement.  Until such an  assignment  is effected,  AT&T is the "Buyer" for all
purposes of this  Agreement.  At the time of such  assignment,  such  subsidiary
shall become the "Buyer" for all purposes of this Agreement, it being understood
that AT&T shall  cause Buyer to perform  all of Buyer's  obligations  under this
Agreement  and that AT&T is  intended to be  directly  and fully  liable for any
breach of Buyer's obligations hereunder.

     1.3. ISSUANCE OF CLASS A STOCK; EXECUTION OF ADDITIONAL AGREEMENTS.  At the
Closing:

          (a)  Buyer  will pay or  tender  to the  Company  cash in  immediately
     available funds in the amount of $300,000,000 (the "PURCHASE PRICE").


          (b) The Company  shall issue and deliver to Buyer a share  certificate
     or certificates  representing the Buyer Shares acquired hereunder by Buyer,
     which  certificate or  certificates  shall be registered in Buyer's name in
     the form of other certificates representing Class A Stock.

          (c) The Company and Buyer shall  execute and deliver the  Registration
     Rights  Agreement  relating  to the  Buyer  Shares  and  any  Class A Stock
     purchased  from IDT  Investments,  substantially  in the form  attached  as
     EXHIBIT A hereto (the "REGISTRATION RIGHTS AGREEMENT").







<PAGE>

     1.4. CLOSING.  The issuance and delivery of the Buyer Shares by the Company
to Buyer and the delivery of the Purchase  Price to the Company (the  "CLOSING")
is taking  place  simultaneously  herewith at the offices of  Wachtell,  Lipton,
Rosen & Katz, 51 West 52nd Street, New York, NY 10019.

2. REPRESENTATIONS, WARRANTIES AND ACKNOWLEDGMENTS OF AT&T.

     AT&T  hereby  represents,  warrants  and  acknowledges  to the  Company  as
follows:

     2.1. NO  REGISTRATION  OF SHARES.  AT&T is aware that the Buyer Shares have
not been  registered  under the  Securities Act of 1933, as amended (the "ACT"),
that such offer and sale are intended to be exempt from  registration  under the
Act  and  the  rules  promulgated  thereunder  by the  Securities  and  Exchange
Commission  (the  "SEC"),  and that the Buyer Shares  cannot be sold,  assigned,
transferred,  or otherwise  disposed of unless they are subsequently  registered
under the Act or an exemption from such registration is available.  AT&T is also
aware that sales or  transfers  of the Buyer  Shares are further  restricted  by
state  securities  laws  and the  provisions  of this  Agreement  and  that  the
certificates  for the Buyer  Shares will bear  appropriate  legends  restricting
their transfer pursuant to applicable laws, and this Agreement.

     2.2. SUITABILITY OF INVESTMENT.

          (a) Buyer is  acquiring  the Buyer  Shares  for its own  account,  for
     investment  purposes only and not with a view to the resale or distribution
     thereof;

          (b) Buyer has not and will not, directly or indirectly,  offer,  sell,
     transfer,  assign,  exchange or otherwise dispose of all or any part of the
     Buyer  Shares,  except in  accordance  with  applicable  federal  and state
     securities laws;

          (c) AT&T has such knowledge and experience in financial,  business and
     tax matters that AT&T is capable,  on Buyer's  behalf,  of  evaluating  the
     merits and risks  relating to Buyer's  investment  in the Buyer  Shares and
     making an investment decision with respect to the Company;

          (d) To the full  satisfaction of AT&T,  AT&T, on Buyer's  behalf,  has
     been given the opportunity to obtain  information and documents relating to
     the  Company  and  to  ask   questions   of  and   receive   answers   from
     representatives of the Company concerning the Company and the investment in
     the Buyer Shares;

          (e) Neither AT&T nor any of its affiliates has engaged in any activity
     that  would be deemed a  "general  solicitation"  under the  provisions  of
     Regulation D as promulgated under the Act;

          (f) AT&T has such  knowledge  and  experience in financial or business
     matters that it can, and it has, on Buyer's behalf, adequately analyzed the
     risks of an investment in the Buyer Shares and it has  determined the Buyer
     Shares are a suitable  investment  for Buyer and that Buyer is able at this
     time, and in the foreseeable  future,  to bear the economic risk of a total
     loss of its investment in the Company;

                                       2


<PAGE>

          (g) AT&T is aware  that there are  substantial  risks  incident  to an
     investment in the Buyer Shares; and

          (h) Buyer will be an "accredited  investor" within the meaning of Rule
     501 of Regulation D promulgated under the Act as presently in effect and is
     either  purchasing  for  its own  account  or for the  account  of  another
     "accredited  investor," and any accounts for which Buyer is acting are each
     able to bear the economic risks of this investment.  If Buyer is subject to
     ERISA,  and is  acquiring  the  Buyer  Shares as a  fiduciary  or agent for
     another  investor's  account,  Buyer will have sole  investment  and voting
     discretion  with  respect to such  account and will have full power to make
     the  acknowledgments,  representations  and agreements  contained herein on
     behalf of such account.

     2.3. ORGANIZATION,  GOOD STANDING AND QUALIFICATION.  AT&T is a corporation
duly  organized,  validly  existing and in good  standing  under the laws of the
State of New York.  AT&T has the corporate power and authority to (i) enter into
and perform this Agreement and (ii) cause Buyer to perform this Agreement. At or
before the Closing,  Buyer shall (i) be duly organized and validly  existing and
in good  standing  under  the laws of its state of  formation  and (ii) have the
power and authority to enter into and perform this Agreement.

     2.4.  AUTHORIZATION.  All  action  on the  part of AT&T  necessary  for the
authorization,  execution and delivery of this Agreement and for the performance
of all  obligations of AT&T  hereunder  (other than formation of Buyer) has been
taken.  This  Agreement  has  been  duly  executed  and  delivered  by AT&T  and
constitutes  a valid and legally  binding  obligation  of AT&T,  enforceable  in
accordance with its respective terms,  subject to (i) the laws of bankruptcy and
the laws affecting  creditors'  rights  generally and (ii) the  availability  of
equitable remedies.  At or before the Closing,  all actions on the part of Buyer
necessary  for the  authorization  and  delivery of this  Agreement  and for the
performance of all obligations of Buyer hereunder shall have been taken.

     2.5.  COMPLIANCE  WITH OTHER  INSTRUMENTS.  AT&T is not in violation of any
provision of its  Certificate  of  Incorporation  or Bylaws,  each as amended to
date, or, to AT&T's  knowledge,  in violation or default of any provision of any
instrument,  judgment, order, writ, decree or contract to which it is a party or
by which it is bound or any  provision  of  federal  or state  statute,  rule or
regulation  applicable to AT&T, which violation or default would have a material
adverse  effect on AT&T's ability to consummate  the  transactions  contemplated
hereby.  As of the Closing,  Buyer shall not be in violation of any provision of
the limited liability company agreement of Buyer, or, to Buyer's  knowledge,  in
violation or default of any provision of any instrument,  judgment, order, writ,
decree  or  contract  to  which  it is a party  or by  which  it is bound or any
provision of federal or state statute,  rule or regulation  applicable to Buyer,
which  violation or default would have a material  adverse effect on Buyer.  The
execution,  delivery,  and performance of and compliance with this Agreement and
the purchase of the Class A Stock pursuant  hereto will not, with or without the
passage of time or giving of notice,  result in any such material violation,  or
be in conflict  with or  constitute a default  under any such term, or result in
the creation of any mortgage,  pledge,  lien,  encumbrance or charge upon any of
the  properties  or  assets  of AT&T or  Buyer  or the  suspension,  revocation,
impairment,  forfeiture or nonrenewal of any permit,  license,  authorization or
approval  applicable to AT&T or Buyer,  its business or operations or any of its
assets or properties.

                                       3



<PAGE>

     2.6. NO OTHER  AGREEMENTS.  Except for this  Agreement,  the Stock Purchase
Agreement,  the Voting Agreement,  the letter  agreement,  dated March 28, 2000,
between AT&T and IDT, the letter  agreement  dated March 30, 2000,  by and among
AT&T,  IDT and the Company  (the "THREE  PARTY  LETTER  AGREEMENT"),  the Option
Agreement,  dated as of April 30, 2000,  between IDT and AT&T, and any agreement
or  understanding   specifically  contemplated  by  those  agreements  and  this
Agreement,  there is no other agreement or  understanding by and between IDT and
AT&T or their  respective  affiliates.  Without  limiting the  generality of the
foregoing,  as of the date hereof AT&T has not entered into any  agreement  with
any other direct shareholder (other than IDT and Buyer) of the Company.

     2.7. HSR ACT. AT&T has  completed and filed,  or caused to be completed and
filed, at its own cost and expense,  any  notification and report required to be
filed under the HSR Act with respect to the  transactions  contemplated  by this
Agreement,  has requested early termination of the waiting period imposed by the
Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the "HSR ACT")
and the waiting period has been terminated.

     2.8. CAPITALIZATION.  If AT&T assigns its rights hereunder to a new entity,
the  authorized and issued capital of Buyer shall be as set forth in the Limited
Liability Company Agreement of Buyer.

     2.9.  CONSENTS.  Except as disclosed on Schedule 2.9 or as would not have a
material  adverse effect on AT&T or prevent or materially delay the consummation
of the transactions described herein, to AT&T's knowledge, no consent, approval,
order  or  authorization  of,  or  registration,   qualification,   designation,
declaration or filing with, any federal,  regional,  state or local governmental
authority or any third party on the part of AT&T is required in connection  with
the  execution  and  delivery  of this  Agreement  and the  consummation  of the
transactions contemplated hereby.

3. REPRESENTATIONS, WARRANTIES AND ACKNOWLEDGMENTS OF THE COMPANY. Except as set
forth on the Schedule of Exceptions attached hereto as Exhibit A, the Company
hereby represents, warrants and acknowledges to AT&T as follows:

     3.1.  ORGANIZATION,  GOOD  STANDING  AND  QUALIFICATION.  The  Company is a
corporation duly organized, validly existing and in good standing under the laws
of the State of Delaware and has all requisite  corporate power and authority to
own and operate its assets and  properties,  to carry on its Internet  telephony
business and such other businesses as conducted by the Company (the "BUSINESS"),
to execute and deliver  this  Agreement  and to issue and sell the Buyer  Shares
pursuant to this Agreement.  To the Company's  knowledge,  as of the date hereof
the Company  possesses all  governmental  and other permits,  licenses and other
authorizations  to own its  properties as now owned and to conduct its Business,
except  where the  failure  to  possess  such  governmental  and other  permits,
licenses and other  authorizations  would not have a material  adverse effect on
the business,  assets, financial condition,  results of operations or properties
of the Company (a "MATERIAL ADVERSE EFFECT").  To the Company's  knowledge,  the
Company is duly  qualified to transact  business and is in good standing in each
jurisdiction  wherein the properties owned or leased or the business  transacted
by the Company makes such qualification to do business as a foreign  corporation
necessary,  except  for such  jurisdictions  in which the  failure to so qualify
would not have a Material  Adverse  Effect.  The  Company  has



                                       4


<PAGE>

duly caused to be elected John C.  Petrillo and Richard R. Roscitt as members of
the Board of Directors of the  Company,  effective as of the Closing.  Howard S.
Jonas has submitted his resignation  from the Board of Directors of the Company,
effective as of the Closing.

     3.2. CAPITALIZATION. The authorized capital of the Company consists of:

          (a) STOCK.  As of August 9, 2000,  (i)  6,850,000  shares of preferred
     stock,  par value  $.01 per  share,  none of which are  validly  issued and
     outstanding,  (b)  200,000,000  shares of common stock,  par value $.01 per
     share ("COMMON  STOCK"),  of which 22,396,889 shares are validly issued and
     outstanding and (c) 33,916,750  shares of Class A Stock shares of which are
     authorized and validly issued and outstanding.

          (b) OPTIONS.  Except as set forth on Schedule  3.2(b),  as of July 31,
     2000 there are not outstanding any options, warrants, subscriptions, rights
     (including  conversion  or preemptive  rights or first  refusal  rights) or
     agreements for the purchase or  acquisition  from the Company of any shares
     of the Company's  capital stock or securities  convertible into its capital
     stock.  Except as set forth on Schedule 3.2(b) hereof, no stock plan, stock
     purchase,  stock  option or other  agreement or  understanding  between the
     Company  and any  holder of any  equity  securities  or rights to  purchase
     equity securities provides for acceleration or other changes in the vesting
     provisions or other terms of such agreement or  understanding as the result
     of any merger,  consolidated sale of stock or assets,  change in control or
     any other  transaction(s)  by the  Company.  The  Company is not a party or
     subject to any agreement or understanding, and, to the Company's knowledge,
     there is no agreement or understanding between any persons and/or entities,
     which  affects or relates to the voting or giving of written  consents with
     respect to any security or by a director of the Company.

          (c)  TREASURY  STOCK.  The  Company  does not hold any  shares  of its
     capital stock in its treasury.


     3.3.  SUBSIDIARIES.  Except as set forth on Schedule  3.3, the Company does
not own or  control,  directly  or  indirectly,  any  equity  security  or other
interest of any other corporation, limited partnership or other business entity.

     3.4. AUTHORIZATION. All corporate action on the part of the Company and its
officers, directors and stockholders necessary for the authorization,  execution
and  delivery  of  this  Agreement  and  transactions  contemplated  hereby  the
performance of all obligations of the Company  hereunder and the  authorization,
issuance and delivery of the Class A Stock being sold hereunder, have been taken
or will be taken prior to the Closing,  and this Agreement will be duly executed
by the Company,  and will constitute a valid and legally  binding  obligation of
the Company,  enforceable in accordance with its terms,  subject to (i) the laws
of bankruptcy and the laws affecting  creditors' rights generally,  and (ii) the
availability of equitable remedies.

     3.5. VALID ISSUANCE OF CLASS A STOCK.

          (a) The Class A Stock,  when issued,  sold and delivered in accordance
     with  the  terms  hereof  for the  consideration  herein,  will be duly and
     validly  issued,  fully  paid and  nonassessable  and free of any  liens or
     encumbrances,  except such as may be created or


                                       5


<PAGE>

     suffered by Buyer,  will be in  compliance  with all  applicable  state and
     federal securities laws and will have the rights,  preferences,  privileges
     and  limitations  described  in the Amended  and  Restated  Certificate  of
     Incorporation  of the  Company,  attached  as EXHIBIT B. As a result of the
     issuance  contemplated  herein,  Buyer will  become a  "Holder"  within the
     meaning of Article  Fourth,  Section  (3)(e)(2) of the Company's Amended
     and Restated Certificate of Incorporation, with the effect that the shares
     of Class A Stock sold by IDT  Investments  under the Stock  Purchase
     Agreement will not be converted by their terms into Common Stock, par value
     $.01 per share, of the Company.

          (b)   Subject  to  the   accuracy   of  and  in   reliance   upon  the
     representations  in Section 2 hereof and the compliance with all applicable
     restrictions on transferability,  the offer, sale and issuance of the Class
     A Stock by the  Company  in  conformity  with the  terms of this  Agreement
     constitute  a  transaction  exempt from the  registration  requirements  of
     Section 5 of the Act.  Neither the Company nor any authorized  agent acting
     on its behalf will take any action  hereafter  that would cause the loss of
     such exemptions.

          (c) The sole stock  option and  incentive  plan of the  Company is the
     Net2Phone, Inc. 1999 Amended and Restated Stock Option and Incentive Plan.

          3.6. CONSENTS.

          (a)  Except as  disclosed  on  Schedule  3.6(a) or as would not have a
     Material  Adverse Effect or prevent or materially delay the consummation of
     the transactions described herein, to the Company's knowledge,  no consent,
     approval,  order  or  authorization  of,  or  registration,  qualification,
     designation,  declaration or filing with, any federal,  regional,  state or
     local governmental  authority or any third party on the part of the Company
     is required in connection with the execution and delivery of this Agreement
     and the consummation of the transactions contemplated hereby.

          (b) To the Company's knowledge, the Company is not in violation of any
     applicable statute, rule, regulation,  order or restriction of any domestic
     or foreign  government or any  instrumentality or agency thereof in respect
     of the conduct of its  Business or the  ownership of its  properties  which
     violation would have a Material Adverse Effect.

     3.7. LITIGATION. Except as set forth on Schedule 3.7 or as would not have a
Material  Adverse Effect or prevent or materially  delay the consummation of the
transactions  described herein, to the Company's knowledge,  there is no action,
suit,  claim,  arbitration,  proceeding  or  investigation  pending or currently
threatened against the Company or the Business, or against any officer, director
or employee of the Company in  connection  with such  officer's,  director's  or
employee's relationship with, or actions taken on behalf of, the Company, nor is
the  Company  aware of any event or  circumstances  that it  expects to form the
basis for such an action, suit, claim, proceeding or investigation.  The Company
is not a party or subject to the  provisions  of any  order,  writ,  injunction,
judgment or decree of any court or  government  agency or  instrumentality  that
would  have a  Material  Adverse  Effect  or  prevent  or  materially  delay the
consummation of the transactions described herein.

                                       6


<PAGE>


     3.8. INTELLECTUAL PROPERTY.

          (a) The Company  hereby  refers  AT&T to Schedule  3.8(a) and the risk
     factors  referenced  in  Schedule  3.8(a),   which  Schedule  modifies  all
     representations  made in this Section 3.8.  Except as set forth on Schedule
     3.8(a),  as of  the  date  hereof  the  Company  has  no  knowledge  of any
     infringement by it of any third-party patents,  trademarks,  service marks,
     trade names, copyrights,  trade secrets,  information and other proprietary
     rights  and  processes  necessary  for  the  Business  (collectively,   the
     "INTELLECTUAL PROPERTY RIGHTS"). Except as set forth on Schedule 3.8(a), as
     of the date hereof the Company has no knowledge of any  obligation  to make
     any  payments  by way of  royalties,  fees or  otherwise  to any  owner  or
     licensor of, or other  claimant to, any patent,  trademark,  service  mark,
     trade name,  copyright,  trade  secret,  information  or other  proprietary
     right,  with respect to the use thereof,  or in connection with the conduct
     of the Business or otherwise other than  royalties,  fees or other payments
     (i) that would not have a Material  Adverse  Effect,  (ii) arising from the
     purchase of "off the shelf" or standard products, or (iii) that are paid or
     payable in connection with strategic relationships,  partnering agreements,
     bundling agreements, web linking agreements, agency agreements, affiliation
     agreements or other similar business arrangements in the ordinary course of
     the Business (excluding any such arrangements or agreements entered into as
     part of the  settlement of any potential or actual dispute or claim against
     the Company).  Except as set forth on Schedule  3.8(a),  the Company has no
     knowledge of any third party that is  infringing  upon or violating  any of
     the Company's  Intellectual  Property Rights.  The Company has no knowledge
     that it is necessary to utilize any  inventions  or trade secrets of any of
     its employees  made prior to their  employment  by the Company,  except for
     patented  inventions  or trade  secrets  that  have  been  assigned  to the
     Company.  Since the Company's  organization,  reasonable  security measures
     have been taken to protect the  secrecy,  confidentiality  and value of the
     Company's trade secrets (except where the failure to do so would not have a
     Material Adverse Effect). The Company has a valuable body of trade secrets,
     including  know-how,  concepts,  computer programs and other technical data
     (the "PROPRIETARY  INFORMATION") for the development,  manufacture and sale
     of its  products.  To its  knowledge,  the Company has the right to use the
     Proprietary  Information free and clear of any rights, liens,  encumbrances
     or claims of others,  except that the possibility exists that other persons
     may have  independently  developed  trade secrets or technical  information
     similar or identical to those of the Company.  The Company has no knowledge
     of any misappropriation of its Proprietary Information.  The Company has no
     knowledge  that  any of its  employees  is  obligated  under  any  contract
     (including  licenses,  covenants  or  commitments  of any  nature) or other
     agreement,  or  subject  to any  judgment,  decree or order of any court or
     administrative agency, that would interfere with the use of his or her best
     efforts to promote the interests of the Company or that would conflict with
     the Company's business.

          (b)  The   Company   has   registered   the  URL   addresses   of  the
     "net2phone.com"  and  "EZSurf.com"  web sites  (the "WEB  SITES")  with the
     appropriate organizations, in accordance with customary industry practice.

     3.9. COMPLIANCE WITH OTHER INSTRUMENTS.  The Company is not in violation of
any  provision  of its Amended and  Restated  Certificate  of  Incorporation  or
Bylaws, each as


                                       7


<PAGE>

amended to date, or, to the Company's knowledge, in violation or
default of any provision of any instrument,  judgment,  order,  writ,  decree or
contract  to which it is a party or by which it is  bound,  which  violation  or
default would have a Material  Adverse  Effect.  To the Company's  knowledge and
except as would not have a Material  Adverse  Effect or  prevent  or  materially
delay the  consummation of the  transactions  described  herein,  the execution,
delivery, and performance of and compliance with this Agreement and the issuance
and sale of the Class A Stock  pursuant  hereto  will not,  with or without  the
passage  of time or giving of  notice,  result in any such  violation,  or be in
conflict  with or  constitute  a default  under any such term,  or result in the
creation of any material mortgage,  pledge, lien, encumbrance or charge upon any
of the  properties  or  assets of the  Company  or the  suspension,  revocation,
impairment,   forfeiture  or  nonrenewal  of  any  material   permit,   license,
authorization or approval applicable to the Company,  its business or operations
or any of its assets or properties.

     3.10. SEC FILINGS.  All reports and materials filed by the Company with the
SEC were accurate and true in all material  respects as of the date such reports
and materials were filed.

     3.11. FINANCIAL  STATEMENTS.  The Company has delivered to AT&T its audited
consolidated  financial  statements  (balance  sheet,  statement of  operations,
statement of  stockholders'  deficit and statement of cash flows) for the fiscal
years ended July 31,  1998 and July 31, 1999 (the  "BALANCE  SHEET  DATE"),  its
unaudited balance sheet as at April 30, 2000 and unaudited statements of income,
cash flow and stockholders'  equity for the six-month period ending on April 30,
2000  (the  "STATEMENT  DATE")  (together,  the  "FINANCIAL  STATEMENTS").   The
Financial  Statements are complete and correct in all material respects and have
been  prepared in  accordance  with  generally  accepted  accounting  principles
applied on a consistent  basis  throughout  the periods  indicated.  The balance
sheets  included in the  Financial  Statements  accurately  set forth and fairly
present the financial  condition and operating  results of the Company as of the
dates thereof and reflect all material liabilities,  contingent or otherwise, of
the Company as of such dates,  and the statements of operations  included in the
Financial  Statements  accurately  present the operating  results of the Company
during  the  periods  indicated  therein.  Except as set forth in the  Financial
Statements,  the Company has no material  liabilities,  contingent or otherwise,
other  than  (i)  liabilities  incurred  in  the  ordinary  course  of  business
subsequent  to the  Statement  Date and (ii)  obligations  under  contracts  and
commitments  incurred in the ordinary  course of business and not required under
generally  accepted  accounting  principles  to be  reflected  in the  Financial
Statements,  which,  in both cases,  individually  or in the aggregate,  are not
material to the financial condition or operating results of the Company.  Except
as  disclosed  in the  Financial  Statements,  the Company is not a guarantor or
indemnitor of any  indebtedness of any other person,  firm or  corporation.  The
Company  maintains and will continue to maintain a standard system of accounting
established and  administered in accordance with generally  accepted  accounting
principles.

     3.12. LABOR AGREEMENTS AND ACTIONS;  EMPLOYEES. The Company is not bound by
or  subject  to any  agreement  with any  labor  union,  and no labor  union has
requested  or, to the  Company's  knowledge,  has sought to represent any of the
employees of the Company.  There is no strike or other labor  dispute  involving
the Company or the Business pending or, to the Company's knowledge,  threatened,
that would have a Material Adverse Effect. The Company is not aware of any labor
organization  activity  involving  the  employees  of the  Company or


                                       8


<PAGE>

otherwise  affecting the  Business.  To the  Company's  knowledge,  no employee,
officer or  consultant  of the Company is in violation  of any material  term of
employment  contract,  patent  disclosure  agreement  or any other  contract  or
agreement,  or  any  material  judgment,   decree  or  order  of  any  court  or
administrative  agency,  relating  to the  relationship  of any  such  employee,
officer or consultant  with the Company or any other party because of the nature
of the  Business;  nor,  to the  Company's  knowledge,  has any  such  employee,
officer,  or  consultant  received  written  notice or  communication  of such a
violation.  Except as set forth on Schedule  3.12,  the Company has no knowledge
that any officer or Key Employee, or that any group of Key Employees, intends to
terminate their  employment with the Company or its  Subsidiaries,  nor does the
Company  have a present  intention  to terminate  the  employment  of any of the
foregoing.  Subject to general  principles  related to wrongful  termination  of
employees or other  applicable laws, the employment of each officer and employee
of the Company is terminable at the will of the Company.  The carrying on of the
Business by the  employees of the Company will not, to the best of the Company's
knowledge,  conflict  with or  result in a breach of the  terms,  conditions  or
provisions of, or constitute a default under, any material contract, covenant or
instrument under which any such employees are now obligated.  No employee of the
Company has been granted the right to continued  employment by the Company or to
any material compensation  following termination of employment with the Company.
For purposes of this  Agreement,  "KEY EMPLOYEE"  shall mean each of Clifford M.
Sobel, Howard S. Balter, Ilan Slasky and Glenn J. Williams.

     3.13. INTERESTED PARTY TRANSACTIONS; OBLIGATIONS TO RELATED PARTIES. Except
as disclosed on Schedule 3.13 hereto, to the Company's  knowledge,  there are no
transactions  required to be disclosed in the  Company's  Form 10-K for the year
ended July 31, 2000 pursuant to Item 404 of the Regulation S-K promulgated under
the Act. To the Company's knowledge,  there are no obligations of the Company to
officers,  directors,  stockholders,  or employees of the Company other than for
indemnification,  payment of salary for  services  rendered,  reimbursement  for
reasonable  expenses  incurred on behalf of the  Company and for other  standard
employee benefits made generally available to all employees.

     3.14.  TAX RETURNS  AND  PAYMENTS.  The  Company  has timely  filed all tax
returns  (federal,  state and local)  required  to be filed by it the failure to
file which would not have a Material  Adverse Effect.  All taxes shown to be due
and payable on such  returns,  any  assessments  imposed,  and to the  Company's
knowledge  all other  taxes due and  payable  by the  Company  on or before  the
Closing have been paid or will be paid prior to the time they become delinquent.
The Company has not been advised (i) that any of its returns,  federal, state or
other,  have been or are being  audited  as of the date  hereof,  or (ii) of any
material deficiency in assessment or proposed judgment to its federal,  state or
other taxes.  The Company has no knowledge of any material  liability of any tax
to be imposed upon its properties or assets that is not adequately provided for.
The Company has not  executed  any waiver of any statute of  limitations  on the
assessment or calculation of any tax or governmental charge. Except as would not
have a Material Adverse Effect,  the Company has withheld or collected from each
payment  made to each of its  employees  the amount of all taxes  required to be
withheld or collected therefrom.

     3.15.  REGISTRATION  RIGHTS.  Except as set  forth in  Schedule  3.15,  the
Company is presently not under any  obligation,  and has not granted any rights,
to register under the Act any

                                       9


<PAGE>


of the Company's presently outstanding  securities or any of its securities that
may hereafter be issued.

      3.16.  CHANGES.  Except as (i) set forth in Schedule 3.16 or as  disclosed
in the reports and materials filed by the Company with the SEC or (ii) otherwise
expressly  contemplated by this Agreement,  since the Balance Sheet Date,  there
has not been:

          (a) Any material  adverse  change in the Business or operations of the
     Company  resulting  from the actions or inactions of the  management of the
     Company,  excluding actions or decisions not to act taken in good faith and
     with the  appropriate  degree of care,  and  excluding  changes  in general
     economic  conditions,  general changes in the industry in which the Company
     is engaged and general changes in technology;

          (b) Any material change, except in the ordinary course of business, in
     the contingent obligations of the Company by way of guaranty,  endorsement,
     indemnity, warranty or otherwise;

          (c)  Any  cancellation,  compromise  or  waiver  by the  Company  of a
     financial right or of a material debt owed to it;

          (d) Any satisfaction or discharge of any lien, claim or encumbrance or
     payment of any obligation by the Company, other than in the ordinary course
     of  business  and  that  individually  or in the  aggregate  has  had or is
     reasonably expected to have a Material Adverse Effect;

          (e) Any  material  change  or  amendment  to a  material  contract  or
     arrangement  by which the  Company  or any of its assets or  properties  is
     bound or subject;

          (f)  Any  direct  or  indirect  loans  made  by  the  Company  to  any
     stockholder,  employee,  officer or  director  of the  Company,  other than
     advances made in the ordinary course of business;

          (g) Any material change in any  compensation  arrangement or agreement
     with any employee, officer, director or stockholder;

          (h) Any  declaration or payment of any dividend or other  distribution
     of the assets of the Company or any  purchase or  redemption  of any of its
     outstanding capital stock;

          (i) Any material sale, transfer or lease of the assets of the Company,
     except in the ordinary course of business;

          (j) Any physical  damage,  destruction or loss (whether or not covered
     by  insurance)  which  individually  or in  the  aggregate  has  had  or is
     reasonably expected to have a Material Adverse Effect;

          (k) Any  issuance or sale of any shares of the capital  stock or other
     securities of the Company or grant of any options with respect thereto,  or
     any modification of any

                                       10





<PAGE>


     of the capital stock of the Company other than pursuant to the transactions
     contemplated hereby, the engagement letter with the Placement Agreement and
     the Sobel Agreement;

          (l) Any  mortgage,  pledge or lien incurred with respect to any of the
     assets of the Company having a value in excess of $50,000;

          (m) Any material  agreement or  commitment by the Company to do any of
     the things described in this Section 3.16.

     3.17.  D&O  INSURANCE.  The Company has obtained  directors'  and officers'
liability  insurance and such other policies of insurance  approved from time to
time by the Board of Directors,  issued by insurers of  recognized  standing and
responsibility,  with such  coverage and in such amounts as are customary in the
case of  companies  of  established  reputation  engaged  in the same or similar
business and similarly situated.

     3.18. MATERIAL AGREEMENTS.

          (a) Set forth on Schedule  3.19(a)  and in the  reports and  materials
     filed  by the  Company  with  SEC is a  complete  list  of all  agreements,
     contracts, leases, licenses,  instruments and commitments (oral or written)
     to which the  Company is a party or is bound that would be  required  to be
     filed with or incorporated by reference into the Company's Annual Report on
     Form  10-K  for the  year  ended  July  31,  2000  pursuant  to Item 601 of
     Regulation S-K promulgated under the Act ("MATERIAL AGREEMENTS").

          (b) To  the  Company's  knowledge,  the  Company  has  not  materially
     breached,  nor does the Company  have any  knowledge  of any claim that the
     Company has breached, any term or condition of (i) any Material Agreement,
     or (ii) any  other  agreement,  contract,  lease,  license,  instrument  or
     commitment  that,  individually or in the aggregate,  would have a Material
     Adverse Effect.  Each Material Agreement is in full force and effect,  and,
     to the Company's knowledge, no other party to such Material Agreement is in
     default thereunder. Except as set forth on Schedule 3.19(b), the Company is
     not a party to any  agreement  that  materially  restricts  its  ability to
     market or sell any of its products  (whether by territorial  restriction or
     otherwise).

     3.19.  ACTIONS  BY THE  BOARD OF  DIRECTORS  OF THE  COMPANY.  The Board of
Directors of the Company has adopted an amendment to the  Company's  Amended and
Restated  Certificate of  Incorporation  (i) increasing the number of authorized
shares of Class A Stock by 4,000,000 and (ii)  increasing  the maximum number of
directors  that may serve on the Board of Directors of the Company from 11 to 13
(the  "AMENDMENT").  The Board of Directors of the Company has also (i) resolved
to  nominate  AT&T's  designees  to the  additional  two  seats on the  Board of
Directors and (ii) confirmed that the  restrictions  contained in Section 203 of
the Delaware General Corporation Law shall not apply to any business combination
between the Company and AT&T or Buyer.

4. COVENANTS. The Company and AT&T hereby covenant and agree as follows:

     4.1.  LEGAL FEES AND EXPENSES.  Each of the Company and AT&T shall bear the
fees and  expenses of its counsel  incurred  in  connection  with the review and
negotiation  of this

                                       11



<PAGE>


Agreement,  and all other documentation necessary to consummate the transactions
contemplated  hereby,  and all fees and  expenses  of such  counsel  incurred in
connection  with its legal due  diligence  investigation  of the Company and its
business  prospects,  whether or not the  transactions  contemplated  hereby are
consummated.

     4.2.  GOVERNMENTAL  INQUIRIES.   AT&T  and  the  Company  shall  use  their
respective commercially reasonable efforts to respond, as promptly as reasonably
practicable,  to any inquiries  received from the Federal Trade  Commission (the
"FTC") and the Antitrust  Division of the Department of Justice (the  "ANTITRUST
DIVISION")  for  additional  information or  documentation,  and to respond,  as
promptly as reasonably practicable,  to all inquiries and requests received from
any  supranational,   national,  state,  municipal  or  local  government,   any
instrumentality,  subdivision,  court,  administrative  agency or  commission or
authority  thereof,  or any  quasi-governmental  or private body  exercising any
regulatory,  taxing,  importing  or  other  governmental  or  quasi-governmental
authority (a  "GOVERNMENTAL  AUTHORITY") in connection  with antitrust  matters.
AT&T and the Company shall use their respective  commercially reasonable efforts
to  overcome  any  objections  which  may be raised  by the FTC,  the  Antitrust
Division or any other Governmental  Authority having jurisdiction over antitrust
matters.  AT&T and the Company shall (i) promptly  notify the other party of any
communication  to that party from the FTC,  the  Antitrust  Division,  any state
attorney general or any other Governmental  Authority and, subject to applicable
law,  permit  the  other  party  to  review  in  advance  any  proposed  written
communication  to any of the  foregoing;  (ii) not agree to  participate  in any
substantive meeting or discussion with any Governmental  Authority in respect of
any  filings,   investigation  or  inquiry  concerning  this  Agreement  or  the
transactions  contemplated  hereby  unless it  consults  with the other party in
advance and, to the extent permitted by such Governmental  Authority,  gives the
other party the opportunity to attend and participate thereat; and (iii) furnish
the other party with copies of all correspondence,  filings,  and communications
(and  memoranda  setting  forth the  substance  thereof)  between them and their
affiliates  and  their  respective  representatives  on the  one  hand,  and any
Government  Authority or members or their  respective  staffs on the other hand,
with  respect  to this  Agreement  and  the  transactions  contemplated  hereby.
Notwithstanding  the  foregoing,   no  party  shall  be  required  to  make  any
significant  change in the  operations  or  activities  of the  business (or any
material  assets  employed  therein) of such party or any of its affiliates if a
party  determines in good faith that such change would be materially  adverse to
the  operations or activities of the business (or any material  assets  employed
therein) of such party or any of its affiliates having  significant  assets, net
worth or revenue.

     4.3.   TRANSACTIONS   BETWEEN  AT&T  AND  THE  COMPANY.   Any  contract  or
transaction,  including a license, between AT&T or any of its affiliates and the
Company  involving  the  potential  payment to or from the  Company of more than
$500,000,  or any business combination between the Company, on the one hand, and
IDT, AT&T or Buyer or any of its affiliates, on the other hand, shall be subject
to the  approval  of a majority  of the  directors  of the  Company  who are not
employed  by,  providing  material  services  for  compensation  to or otherwise
affiliated with AT&T, IDT, Buyer or any member of Buyer or their affiliates (the
"INDEPENDENT Directors");  PROVIDED that the requirement for such approval shall
cease to apply at such time as Buyer becomes the  beneficial  owner of more than
85% or less than 15% of the voting  power of the Company;  and PROVIDED  FURTHER
that the majority approval requirement of the Independent Directors shall not be
required  with respect to the granting of a license by the Company to AT&T which
does not contain  terms,  conditions  and pricing that are more favorable

                                       12



<PAGE>


to the licensee than those  contained in a license  granted to any other person,
which  license has been  approved  or ratified by a majority of the  Independent
Directors.

     4.4. TAKING OF NECESSARY  ACTION.  Each of the parties hereto agrees to use
its best  efforts  promptly to take or cause to be taken all action and promptly
to do or  cause to be done all  things  necessary,  proper  or  advisable  under
applicable  laws  consummate  and make effective the  transactions  contemplated
hereby.  Without limit the  foregoing,  AT&T and the Company will, and AT&T will
cause Buyer to, use their  respective  best  efforts to make or cause to be made
all filings and obtain all  approvals and consents of  governmental  authorities
necessary  or, in the  opinion of AT&T and the  Company,  advisable  in order to
permit the consummation of the transactions contemplated hereunder.

     4.5. THIRD DIRECTOR.  After the Closing, the Company shall duly cause to be
elected to the Board of Directors  of the Company a designee,  as named by AT&T,
as soon as reasonably practicable after such designee is named by AT&T.

5. CONDITIONS OF BUYER'S OBLIGATIONS AT CLOSING. The obligations of Buyer to
purchase and pay for the Buyer Shares at Closing are subject to satisfaction or
waiver of each of the following conditions precedent:

     5.1. REPRESENTATIONS AND WARRANTIES; COVENANTS. Each of the representations
and  warranties of the Company set forth in this  Agreement that is qualified as
to materiality or Material  Adverse Effect shall have been true and correct when
made and shall be true and correct on and as of the Closing as if made on and as
of such date (other than  representations  and warranties  which address matters
only as of a certain  date which  shall be true and  correct as of such  certain
date), and each of the representations and warranties of the Company that is not
so qualified shall have been true and correct in all material respects when made
and shall be true and correct in all material  respects on and as of the Closing
as if made on and as of the such date (other than representations and warranties
which address  matters only as of a certain date which shall be true and correct
in all  material  respects as of such  certain  date).  The  Company  shall have
performed  in all  material  respects  all  obligations  and  complied  with all
agreements,  undertakings,  covenants and  conditions  required  hereunder to be
performed by the Company at or prior to the Closing.

     5.2. RESOLUTIONS. The Company shall have delivered to AT&T a certified copy
of the  resolutions  of the Board of  Directors of the Company  authorizing  the
transactions contemplated hereby.

     5.3. CERTIFICATE.  AT&T shall have received a certificate,  dated as of the
Closing, executed by an executive of the Company and stating that the conditions
set forth in Section 5.1 above have been satisfied.

     5.4.  FORCE  MAJEURE.  Subsequent  to the  execution  and  delivery of this
Agreement,  there shall not have occurred any of the following: (i) a suspension
of trading in securities  generally on the Nasdaq National Market by the SEC, by
such exchange or by any other  regulatory body or governmental  authority having
jurisdiction,  (ii) a  declaration  of a banking  moratorium by federal or state
authorities of the United States or (iii) an escalation of a

                                       13



<PAGE>


national  emergency or war by the United States which,  in any such case,  would
have a Material Adverse Effect.

     5.5. CONSENTS, PERMITS AND WAIVERS. The Company shall have obtained any and
all consents,  permits and waivers  necessary or appropriate for consummation of
the  transactions  contemplated  by the Agreement  except for any such consents,
permits  or  waivers  that  would not have a  Material  Adverse  Effect or would
prevent or  materially  delay the  consummation  of the  transactions  described
herein.

     5.6. SHAREHOLDER  APPROVAL OF THE AMENDMENT.  The Amendment shall have been
filed with the Secretary of State of Delaware.

     5.7. THE PURCHASE.  AT&T, IDT and IDT Investments  shall be ready,  willing
and able to consummate  the Purchase,  it being  understood  that this condition
will be deemed to have been  satisfied  if IDT did not consent in writing to the
failure to consummate  the Purchase and the failure to  consummate  the Purchase
constituted  a  breach  by AT&T of its  obligations  under  the  Stock  Purchase
Agreement without reference to Section 7.1(b) of the Stock Purchase Agreement.

6. CONDITIONS OF THE COMPANY'S OBLIGATIONS AT CLOSING. The obligations of the
Company to issue and sell the Buyer Shares to Buyer at the Closing are subject
to satisfaction or waiver of each of the following conditions precedent:

     6.1. REPRESENTATIONS AND WARRANTIES; COVENANTS. Each of the representations
and  warranties  of AT&T set forth in this  Agreement  that is  qualified  as to
materiality  or material  adverse  effect  shall have been true and correct when
made and shall be true and correct on and as of the Closing as if made on and as
of such date (other than  representations  and warranties  which address matters
only as of a certain  date which  shall be true and  correct as of such  certain
date),  and each of the  representations  and  warranties of AT&T that is not so
qualified  shall have been true and correct in all material  respects  when made
and shall be true and correct in all material  respects on and as of the Closing
as if made on and as of the such date (other than representations and warranties
which address  matters only as of a certain date which shall be true and correct
in all material  respects as of such certain date). AT&T shall have performed in
all  material  respects  all  obligations  and  complied  with  all  agreements,
undertakings,  covenants and  conditions  required  hereunder to be performed by
AT&T at or prior to the Closing.

     6.2. OTHER AGREEMENTS.  The Registration Rights Agreement has been executed
and delivered by the parties thereto.

     6.3. SHAREHOLDER  APPROVAL OF THE AMENDMENT.  The Amendment shall have been
filed with the Secretary of State of Delaware.

7. TRANSFER  LIMITATIONS:  1933 ACT LEGEND. Unless sold pursuant to an effective
registration statement,  each certificate representing Buyer Shares shall bear a
legend substantially in the following form:

     "The shares  represented by this certificate have not been registered under
     the United States  Securities Act of 1933, as amended (the "ACT"),  and may
     not be offered,  sold or

                                       14





<PAGE>


     otherwise transferred, pledged or hypothecated unless and until such shares
     are registered under the Act or, except as otherwise  permitted pursuant to
     Rule 144 under the Act or another exemption from registration under the Act
     or an opinion of counsel reasonably satisfactory to the Company is obtained
     to the effect that such  registration  is not  required  and are subject to
     transfer  restrictions  as set  forth in a  Subscription  Agreement,  dated
     August 11, 2000, copies of which may be obtained from the Company."

     The foregoing legend, if necessary,  shall be removed from the certificates
representing  any Class A Stock, at the request of the holder  thereof,  at such
time as (i) they are sold pursuant to an effective registration statement,  (ii)
they become eligible for resale pursuant to Rule 144(k) under the Act or another
provision  of Rule 144 of the Act  pursuant  to which all or a  portion  of such
underlying  Common  Shares  could be sold in a single  transaction,  or (iii) an
opinion of counsel  reasonably  satisfactory  to the  Company is obtained to the
effect that the proposed transfer is exempt from the Act. The transfer agent for
Common Shares will issue new Common Shares  without the legend upon receipt of a
certificate from AT&T or its affiliate  stating that the Common Shares have been
registered or transferred pursuant to an effective  registration statement under
the Act or can be sold in reliance  upon Rule 144 or the Company has received an
opinion of counsel reasonably satisfactory to the Company to the effect that the
proposed transfer is exempt from the Act.

8. TERM.

     8.1.  TERMINATION BY AT&T OR THE COMPANY. The Company or AT&T may terminate
this  Agreement if IDT, IDT  Investments  or AT&T  terminates the Stock Purchase
Agreement.

     8.2.  EFFECT  OF  TERMINATION.  In the  event  of the  termination  of this
Agreement  as provided  in Section 8.1 above,  this  Agreement  shall  forthwith
become void and there shall be no  liability  or  obligation  on the part of the
parties hereto,  except for the obligations set forth in Sections 9.3, 9.6, 9.7,
9.9,  9.12 and 9.13;  PROVIDED,  HOWEVER,  that,  subject to Section  9.12,  the
foregoing  shall not relieve any party of any liability for damages  incurred as
a result of any breach of this  Agreement;  and  PROVIDED  FURTHER,  that, in
the absence  of actual  fraud,  neither  party  shall be liable to the other for
the inaccuracy  of any  representation  made in this  Agreement  in the  event
of a termination.

9. MISCELLANEOUS.

     9.1. SURVIVAL OF COVENANTS. The representations and warranties contained in
Sections 2 and 3 hereof and all claims with respect  thereto  shall  survive for
one year from the date hereof and the  covenants  contained  in Section 4 hereof
shall survive indefinitely.

     9.2. SUCCESSORS AND ASSIGNS.  This Agreement may not be assigned by AT&T or
the  Company  without  the prior  written  consent  of the other  party  hereto;
PROVIDED, HOWEVER, that AT&T may transfer its rights under this Agreement to one
majority-owned  subsidiary  without the consent of the Company.  Nothing in this
Agreement,  express or implied, is intended to confer upon any party, other than
the parties hereto or their  respective  successors and permitted  assigns,  any
rights,  remedies,  obligations,  or  liabilities  under  or by  reason  of this
Agreement, except as expressly provided in this Agreement.

                                       15





<PAGE>



     9.3.  GOVERNING LAW;  SUBMISSION TO  JURISDICTION.  This Agreement shall be
governed by and construed in accordance  with the laws of the State of New York,
without  regard to the conflict of law provisions  thereof.  Each of the Company
and AT&T hereby submits to the  nonexclusive  jurisdiction  of the United States
District  Court for the Southern  District of New York and of any New York State
court sitting in New York City for purposes of all legal proceedings arising out
of or relating to this Agreement and the transactions  contemplated hereby. Each
of the Company and AT&T irrevocably  waives,  to the fullest extent permitted by
law, any objection which it may now or hereafter have to the laying of the venue
of any such  proceeding  brought  in such a court  and any  claim  that any such
proceeding brought in such a court has been brought in an inconvenient forum.

     9.4. COUNTERPARTS.  This Agreement may be executed in counterparts, each of
which shall be deemed an original,  and all of which together shall be deemed to
constitute one and the same instrument.

     9.5.  CAPTIONS  AND  HEADINGS.  The  captions  and  headings  used  in this
Agreement are for convenience only and are not to be considered in construing or
interpreting this Agreement.

     9.6. NOTICES.  Unless otherwise provided, any notice or other communication
required or permitted to be given or effected under this  Agreement  shall be in
writing and shall be deemed effective upon personal or facsimile delivery to the
party  to  be  notified  or  three   business   days  after   deposit   with  an
internationally recognized courier service, delivery fees prepaid, and addressed
to the party to be notified at the following  respective  addresses,  or at such
other addresses as may be designated by written notice; PROVIDED that any notice
of change of address shall be deemed effective only upon receipt:

If to the Company:                         Net2Phone, Inc.
                                           171 Main Street
                                           Hackensack, NJ 07601
                                           Attn: Glenn F. Williams,
                                                 General Counsel
                                           Fax: (201) 530-4159

with a copy to:                            Kirkland & Ellis
                                           AON Center
                                           200 East Randolph Drive
                                           Chicago, Illinois  60601
                                           Attn:  Richard W. Porter
                                           Fax:  (312) 861-2200

If to AT&T:                                AT&T Corp.
                                           295 North Maple Avenue
                                           Basking Ridge, New Jersey  07920
                                           Attn:  Marilyn J. Wasser,
                                                  Vice President-Law and
                                                  Secretary
                                           Fax: (908) 221-6618

                                       16



<PAGE>

with a copy to:                            Wachtell, Lipton, Rosen & Katz
                                           51 West 52nd Street
                                           New York, New York  10019
                                           Attn:  Seth A. Kaplan
                                           Fax:  (212) 403-2000


     9.7.  FINDER'S FEE. Each of the Company,  on the one hand, and AT&T, on the
other hand,  severally  represents  and  warrants to the other party hereto that
neither  it nor  any of  its  officers,  directors,  general  partners,  agents,
employees or affiliates,  has engaged or authorized any broker or finder to act,
directly or  indirectly,  on its behalf,  in  connection  with the  transactions
contemplated by this  Agreement,  or has consented to or acquiesced in anyone so
acting,  and it knows of no claim by any person for compensation  from it for so
acting or of any basis for such a claim.  The  provisions  of this  Section  9.7
shall  survive any  termination  of this  Agreement.  Each party hereto  further
agrees to indemnify each other party for any claims, losses or expenses incurred
by such other party as a result of the  representation in this Section 9.7 being
untrue.

     9.8.  AMENDMENTS AND WAIVERS.  Except as provided in Section 9.13, any term
of this  Agreement  may be  amended,  and  the  observance  of any  term of this
Agreement may be waived (either generally or in a particular instance and either
retroactively  or  prospectively),  only with the written consent of each of the
Company and AT&T.  Any  amendment  or waiver  effected in  accordance  with this
Section 9.8 shall be binding  upon each holder of any Common  Shares (as defined
in  Article  Fourth  of  the  Company's  Amended  and  Restated  Certificate  of
Incorporation)  purchased  under this  Agreement at the time  outstanding,  each
future  holder of all such Common  Shares (as  defined in Article  Fourth of the
Company's  Amended and Restated  Certificate  of  Incorporation),  and the other
parties to this Agreement.

     9.9. SEVERABILITY.  If one or more provisions of this Agreement are held to
be  unenforceable  under  applicable law, such provisions shall be excluded from
this Agreement and the balance of this Agreement shall be interpreted as if such
provision  were so excluded  and shall be  enforceable  in  accordance  with its
terms.

     9.10.  ENTIRE  AGREEMENT.  Except for  Sections 7 and 8 of the  Three-Party
Letter  Agreement  (and the  agreements  entered into  pursuant  thereto),  this
Agreement (and the Exhibits  hereto)  constitute the entire  agreement among the
parties  with  respect to the  subject  matter  hereof and  supersede  all prior
agreements,  understandings  and  discussions  between  them,  and all documents
delivered  by  or  on  behalf  of  the  Company  to  AT&T  and  its  agents  and
representatives, with respect to such subject matter.

     9.11. PUBLICITY. The parties hereto shall not issue, publish or disseminate
or cause to be issued,  published or  disseminated  any press  release or public
communication relating to this Agreement or any of the transactions contemplated
herein or therein using the name or any trademark, logo, tradename, trade dress
or other intellectual  property or otherwise referring to AT&T or the Company or
any  affiliate  or  beneficial  owner of AT&T or the Company as the case may be,
without the prior written  consent of such other party (which  consent shall not
be unreasonably withheld);  provided, however, that either party may make, after
reasonable

                                       17






<PAGE>

consultation with the other party, any disclosure or announcement of information
it is obligated to make pursuant to applicable law or regulation,  including any
applicable law or regulation of the SEC, the New York Stock Exchange, the Nasdaq
National Market, or any other national  securities  exchange or  self-regulatory
organization, as applicable.

     9.12.  THIRD-PARTY  BENEFICIARIES.  Nothing in this  Agreement,  express or
implied,   is  intended  or  shall  be  construed  to  create  any   third-party
beneficiaries.  AT&T agrees that the Company has no liability with respect to or
which may arise out of the Stock Purchase Agreement.

     9.13. WAIVER OF JURY TRIAL. EACH PARTY HERETO HEREBY WAIVES ITS RIGHTS TO A
JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION  BASED  UPON OR  ARISING  OUT OF THIS
AGREEMENT.  THE SCOPE OF THIS WAIVER IS INTENDED TO BE ALL  ENCOMPASSING  OF ANY
AND ALL  DISPUTES  THAT MAY BE FILED IN ANY COURT AND THAT RELATE TO THE SUBJECT
MATTER OF THIS TRANSACTION, INCLUDING, WITHOUT LIMITATION, CONTRACT CLAIMS, TORT
CLAIMS,  BREACH OF DUTY CLAIMS,  AND ALL OTHER COMMON LAW AND STATUTORY  CLAIMS.
THIS  SECTION 9.13 HAS BEEN FULLY  DISCUSSED  BY EACH OF THE PARTIES  HERETO AND
THESE  PROVISIONS  SHALL NOT BE SUBJECT  TO ANY  EXCEPTIONS.  EACH PARTY  HERETO
HEREBY FURTHER  WARRANTS AND REPRESENTS THAT SUCH PARTY HAS REVIEWED THIS WAIVER
WITH ITS LEGAL COUNSEL, AND THAT SUCH PARTY KNOWINGLY AND VOLUNTARILY WAIVES ITS
JURY TRIAL RIGHTS  FOLLOWING  CONSULTATION  WITH LEGAL  COUNSEL.  THIS WAIVER IS
IRREVOCABLE,  MEANING THAT IT MAY NOT BE MODIFIED  EITHER  ORALLY OR IN WRITING,
AND  THIS  WAIVER  SHALL  APPLY TO ANY  SUBSEQUENT  AMENDMENTS,  SUPPLEMENTS  OR
MODIFICATIONS TO (OR ASSIGNMENTS OF) THIS AGREEMENT. IN THE EVENT OF LITIGATION,
THIS AGREEMENT MAY BE FILED AS A WRITTEN  CONSENT TO A TRIAL (WITHOUT A JURY) BY
THE COURT.

     9.14.   DEFINITION  OF   "KNOWLEDGE."   For  purposes  of  this  Agreement,
"knowledge"  with respect to the Company or "the Company's  knowledge" means the
actual knowledge  (after  performing due inquiry) of the Key Employees as of the
date hereof.


                                       18



<PAGE>


                  IN WITNESS WHEREOF, AT&T and the Company have executed this
Agreement on the day and year first above written.

NET2PHONE, INC.

    By:   /s/ Howard Balter
         ----------------------------
  Name:       Howard Balter
 Title:       Chief Executive Officer

AT&T CORP.

    By:   /s/ Edward M. Dwyer
         ----------------------------
  Name:       Edward M. Dwyer
 Title:       Vice President and Treasurer




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