Document:

Exhibit 10.2
                          STRATEGIC ALLIANCE AGREEMENT

      This AGREEMENT is entered into as of November 2, 2001, (the "Effective
Date"), by and between Aquila Technologies Group, Inc., a New Mexico corporation
("Aquila"), and Ambient Corporation, a Delaware corporation ("Ambient").

                               W I T N E S S E T H

      WHEREAS, Aquila provides, inter alia, through its subsidiaries, a wide
range of research and development and equipment fabrication.

      WHEREAS, Ambient is an internet and telecommunications solutions provider
and develops and markets PLT Technologies (as defined hereinafter) which are
designed to facilitate a comprehensive (end-to-end solution) for high speed
transmission and reception of data via power lines, and

      WHEREAS, Aquila and Ambient have entered into a Services Agreement dated
as of August 21, 2001 (the "Services Agreement") providing for research and
development and equipment fabrication relating to the PLT Technology, and

      WHEREAS, Aquila and Ambient desire to enter into an additional commercial
relationship to pursuant to which Aquila would provide various stages of
services including project management, research and development and equipment
fabrication designed to lead to a strategic alliance between the parties; and

      WHEREAS, as a further inducement to Aquila to enter into this strategic
alliance, Ambient desires to provide an equity incentive to Aquila in the form
of warrants to purchase shares of its common stock, par value $.001 per share
(the "Common Stock"); and

      NOW, THEREFORE, in consideration of the terms and conditions hereafter set
forth, the parties hereto agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

As used herein, the following terms shall, unless the context otherwise
required, have the following meanings ascribed to them:

1.1 "Ambient's Intellectual Property" means all United States and foreign
patents (including without limitation all renewals and extensions thereof),
registrations and applications for registration of patents (including without
limitation continuations, continuations-in-part, reissues and extensions
thereof), applications for patent (including without limitation divisions
thereof), trade secrets and other intellectual property rights, whether now
existing or hereafter created, developed, arising or otherwise coming into
being, that relate to or cover any part of Ambient's PLT Technology and the
Jointly Developed Technology, or part thereof, including without limitation any
intellectual property rights that could be violated, infringed or
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misappropriated by any copying, manufacture, use, performance, distribution or
other exploitation of the PLT Technology and the Jointly Developed Technology or
part thereof.

      1.2 "Aquila Intellectual Property" means all United States and foreign
patents (including without limitation all renewals and extensions thereof),
registrations and applications for registration of patents (including without
limitation continuations, continuations-in-part, reissues and extensions
thereof), applications for patent (including without limitation divisions
thereof), trade secrets and other intellectual property rights, whether now
existing or hereafter created, developed, arising or otherwise coming into
being, that relate to or cover any part of Aquila's Technology and the Jointly
Developed Technology or part thereof, including without limitation any
intellectual property rights that could be violated, infringed or
misappropriated by any copying, manufacture, use, performance, distribution or
other exploitation of the Aquila Technology and the Jointly Developed Technology
or part thereof.

      1.3 "Aquila Technology" or "Aquila Technologies" shall mean any and all
software, hardware, technology, equipment, know-how, algorithms, procedures,
techniques, solutions, and work-arounds, whether contained in a technology or
technique on in-process owned by or licensed to Aquila or to a Aquila subsidiary
and contributed by Aquila or any such subsidiary to activities hereunder
including, without limitation, any technology contributed by Aquila or any
subsidiary from any development project with third parties.

      1.4 "Jointly Developed Technology" shall mean any and all software,
hardware, technology, equipment, know-how, algorithms, procedures, techniques,
solutions, blue-prints, surveys, data, test results or outcomes and
work-arounds, developed or created jointly in the course of and pursuant to the
Joint Development Project, whether or not based on Aquila Technology or PLT
Technology. Jointly Developed Technology does not include the Aquila Technology
or PLT Technology.

      1.5 "Party" or "Parties" shall mean Ambient and Aquila.

      1.6 "PLT Technology" or "PLT Technologies" shall mean any and all
software, hardware, technology, equipment, know-how, algorithms, procedures,
techniques, solutions, and work-arounds, whether contained in a technology or
technique on in-process owned by or licensed to Ambient or to an Ambient
subsidiary and contributed by Ambient or any such subsidiary to any development
project hereunder including, without limitation, any technology contributed by
Ambient or any subsidiary or affiliate from any development project with third
parties.

      1.7 "PLT" shall mean Power Line Telecommunications.

                                   ARTICLE II

                             DEVELOPMENT ACTIVITIES

      2.1 Joint Development Projects. Each Party will exert commercially

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reasonable efforts including without limitation dedication of appropriate staff,
facilities, equipment as well as access to facilities, sites, data processing
and learning centers to carry out such development activities as the Parties
shall mutually agree. In particular, Ambient and Aquila agree to cooperate and
to use their best commercial efforts in the development, promotion,
distribution, marketing and other development activities related to particular
development projects identified by Ambient and acceptable to Aquila (the
"Projects"). Each Party agrees to provide, at its sole cost and expense, labor
and equipment necessary to develop the Projects.

      2.2 Services Provided by Aquila. Specifically, Aquila agrees to provide
the following services to Ambient in accordance with the terms of the Services
Agreement, and as the Parties shall mutually agree from time to time: (a) to
support Ambient in the design, engineering, and/or manufacturing of Ambient
prototypes as well as the coordination of large scale manufacturing efforts at
off-shore facilities via ISO9001 quality processes and in compliance with
appropriate regulatory requirements; (b) to support Ambient through ongoing
monitoring and timely reporting of Federal legislative and administrative
activities related to government-funded research opportunities; and (c) to
jointly pursue opportunities for advancement in the technologies utilized for
Homeland Defense and cooperatively engage in U.S. government-funded development
and commercialization efforts (d) to jointly pursue opportunities for
advancement in the technologies utilized in addressing digital divide
initiatives on the federal and state level .

      2.3 Consideration for Services. In consideration of the Services rendered
to it by Aquila hereunder and under the Services Agreement, Ambient agrees to
(a) pay to Aquila compensation as agreed between the parties and in accordance
with the Services Agreement and (b) grant to Aquila 100,000 5-year common stock
purchase warrants as follows: 50,000 at an exercise price of $1.50; 25,000 at an
exercise price of $2.00; and 25,000 at an exercise price of $2.50, all in
accordance with the form of warrant annexed hereto as Exhibit A (the
"Warrants"). All or part of this compensation may be converted into an incentive
equity plan in Ambient and/or profit sharing plan from the sale or license of
PLT Technology, as the Parties may mutually agree.

      2.4 Expenses. Unless otherwise specified in the Services Agreement or the
Project Agreements, each Party agrees to fully fund and pay for the costs and
expenses of the performance of its responsibilities specified herein, including
without limitation: (i) any and all salaries, employee benefits and other
overhead costs for its own employees and facilities involved in the performance
of this Agreement; (ii) any and all costs and expenses for consultants whose use
is not mutually agreed to in writing by both Parties; and (iii) any and all
taxes, charges or fees arising out of its sole obligations or acts hereunder.

      2.5 Development Personnel. All engineers and other staff which may be
assigned by Ambient or Aquila to develop the Projects shall at all times be
employees or consultants of Ambient or Aquila to develop the Projects shall at
all times by employees or consultants of Ambient or Aquila, respectively. Each
Party may, at its option and expense, employ the services of contractors or
consultants to assist in the development of the Projects. Such Party will be
held fully responsible for and guarantee the work and activities of each of its
subcontractors.

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                                   ARTICLE III

                       GRANT OF LICENSES AND OTHER PERMITS

      3.1 Grant of Development Licenses By Ambient. Ambient hereby grants to
Aquila a non-transferable, non-exclusive license to use PLT Technology solely
for the purpose of performing its obligations hereunder (hereinafter, the
"Ambient Technology License"). The license granted under this Section 3.1 shall
not be construed so as to grant Aquila any commercial rights to PLT Technology
or the Ambient Intellectual Property other than as expressly set out in this
Agreement.

      3.2 Grant of License and Permits. Aquila hereby grants to Ambient a
non-transferable, exclusive license to use Aquila Technology solely for the
purpose of performing its obligations hereunder (the "Aquila License"). The
license granted under this Section 3.2 shall not be construed so as to grant
Ambient any commercial rights to Aquila Technology or the Aquila Intellectual
Property other than as expressly set out in this Agreement.

                                   ARTICLE IV

                               PROPRIETARY RIGHTS

      4.1 Aquila acknowledges that the PLT Technology is the sole property of
Ambient and Aquila shall not obtain any interest of any kind in the PLT
Technology (or any patents or patents pending) by or through this Agreement. Any
modifications, enhancements or improvements relating to the PLT Technology or
patents or patents pending (whether or not resulting from the implementation of
this Agreement) which are discovered, invented or first reduced to practice by
Aquila or any of its sub-licensees, shall be the sole and exclusive property of
Ambient subject to a license, on the terms set forth herein, in favor of Aquila.
Aquila acknowledges that this declaration is vital to Ambient and without it
Ambient would not enter into this Agreement.

      4.2 Ambient acknowledges that the Aquila Technology is the sole property
of Aquila and Ambient shall not obtain any interest of any kind in the Aquila
Technology (or any patents or patents pending) by or through this Agreement. Any
modifications, enhancements or improvements relating to the Aquila Technology or
patents or patents pending (whether or not resulting from the implementation of
this Agreement), other than Jointly Developed Technology, which are discovered,
invented or first reduced to practice by Ambient or any of its sub-licensees,
shall be the sole and exclusive property of Aquila subject to a license, on the
terms set forth herein, in favor of Ambient. Ambient acknowledges that this
declaration is vital to Aquila and without it Aquila would not enter into this
Agreement.

      4.3 Ambient shall exclusively own all title, rights and interests in and
to the Jointly Developed Technology and the related intellectual property rights
in such technology.

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      4.4 Trade Secrets. Each of Ambient and Aquila acknowledge that the PLT
Technology and the Aquila Technology contain trade secrets which are the sole
property of Ambient and Aquila, respectively, and which are confidential and are
not in the public domain, the unauthorized use or disclosure of which may cause
irreparable harm to the respective owner of the technology.

                                    ARTICLE V

                        [Article V intentionally deleted]

                                   ARTICLE VI

                                GRANT OF WARRANTS

      6.1 Investment. Aquila is acquiring the Warrants (together with the
underlying shares of Common Stock hereinafter the "Securities") for investment
for Aquila's own account and not with a view to, or for resale in connection
with, any distribution thereof. Aquila understands that the Securities have not
been registered under the Securities Act of 1933, as amended (the "Securities
Act"), by reason of an exemption from the registration provisions of the
Securities Act which depends upon, among other things, the bona fide nature of
Aquila's investment intent as expressed herein.

      6.2 Access to Data. Aquila has had the opportunity to ask questions of,
and receive satisfactory answers from, Ambient regarding its business management
and financial affairs. Aquila has received and read Ambient's business plan and
financial statements and has been granted access and the opportunity to review
such other information as Aquila deems necessary or appropriate as a prudent and
knowledgeable investor in evaluating the merits and risks of Aquila's
acquisition of the Securities. Aquila acknowledges and agrees that Ambient
disclaims any and all responsibility for, and makes no representation or
warranty of any kind, express or implicit, with respect to, Ambient and the PLT
Technology and the information regarding Ambient provided to Aquila.

      6.3 Restrictions Upon Transfer. Aquila understands that the Securities are
characterized as "restricted securities" under the federal securities laws
inasmuch as they are being transferred to Aquila in a transaction not involving
a public offering and that under such laws and applicable regulations such
securities may be resold without registration under the Securities Act only in
certain limited circumstances. Aquila acknowledges that the Securities must be
held indefinitely unless they are subsequently registered under the Securities
Act or an exemption from such registration is available.

      6.4 Marketability. Aquila understands that the Securities have not been
registered under the Securities Act. As a consequence, Aquila understands that
Aquila may not be able to liquidate Aquila's investment in the Securities, even
in the event of an emergency. It also understands that, for the foregoing
reasons, the Securities may not be readily accepted as collateral for a loan.

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      6.5 Risk of Loss. Aquila understands that the Securities are a speculative
investment which involves a high degree of risk of loss by Aquila of the entire
investment, and there is no assurance of any cash distributions or income from
such investment.

      6.6 Legends. All certificates representing the Securities shall contain
legends as to the restrictions on transferability.

      6.7 Company Reliance. Aquila gives the representations and warranties set
forth in Article VI as a condition to, and to induce Ambient, to issue the
Securities to Aquila and record the issuance on the books of Ambient and Ambient
is authorized to rely on such representations and warranties in determining that
such transfer is exempt from the registration requirements of applicable
securities laws.

      6.8 Accredited Investor. Aquila is an "accredited investor" within the
meaning of Securities and Exchange Commission Rule 501 of Regulation D, as
presently in effect.

                                   ARTICLE VII

                              DEFAULT & TERMINATION

      7.1 Effectiveness; Term of Agreement. This Agreement shall become
effective upon signature by each of the Parties hereto and shall continue
thereafter, unless and until terminated in writing by both Parties, or pursuant
to Section 7.2.

      7.2 Right to Terminate.

            7.2.1 Any Party may terminate this Agreement upon any other Party's
            breach of a representation, warranty, term, covenant or undertaking
            in this Agreement, the Services Agreement, the Mutual Non-Disclosure
            Agreement dated August 21, 2001 (the "Non-Disclosure Agreement") or
            in the Warrants if, within thirty (30) days following the delivery
            of a written notice to the defaulting Party setting forth in
            reasonable detail the basis of such default and the remedial action
            required to be taken to rectify such default, the defaulting Party
            has not rectified such default to the reasonable satisfaction of the
            non-defaulting Party.

            7.2.2 A Party hereto may, at its option, terminate this Agreement
            should any other Party hereto:

                  a)    Admit in writing its inability to pay its debts
                        generally as they become due.
                  b)    Make a general assignment for the benefit of creditors.
                  c)    Institute proceedings to be adjudicated a voluntary
                        bankrupt, or consent to the filing of a petition of
                        bankruptcy against it.
                  d)    Be adjudicated by a court of competent jurisdiction as
                        being bankrupt or insolvent.

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                  e)    Seek reorganization under any bankruptcy act, or consent
                        to the filing of a petition seeking such reorganization;
                        or
                  f)    Have a decree entered against it by a court of competent
                        jurisdiction appointing a receiver, liquidator, trustee,
                        or assignee in bankruptcy or in insolvency covering all
                        or substantially all of such Party's property or
                        providing for the liquidation of such Party's property
                        or business affairs.

      7.3 Effect of Termination or Expiration. Upon the termination of this
Agreement for any reason whatsoever, each Party shall promptly, pursuant to the
other Party's instructions, return to the other, erase or destroy all copies of
the documentation belonging to the other and provided in connection with the
Projects and all information and literature relating thereto including all
Confidential Information (as defined in the Non-Disclosure Agreement) which
shall have been provided by the other or reproduced by the other. Upon such
return, erasure and/or destruction, the returning Party shall confirm in writing
to the other that it has complied with its obligations under this section.

            7.3.1 Upon termination of this Agreement for any reason whatsoever,
      each Party shall promptly return to the disclosing Party, and/or erase or
      destroy, all copies of any Confidential Information (as defined in the
      Non-Disclosure Agreement) in the possession of such Party or its
      subsidiaries. Upon such return, erasure and/or destruction, such Party
      shall confirm in writing to the disclosing party that it has complied with
      its obligations under this section.

      7.4 Survival. Articles IV, VI and VII of this Agreement shall survive the
termination and/or expiration of this Agreement for any reason whatsoever.

                                  ARTICLE VIII

                                  MISCELLANEOUS

      8.1 Relationship. The relationship between Aquila and Ambient is that of
independent contractors and parties to certain licenses in accordance with this
Agreement. Neither Party is in any way the agent or attorney in fact of the
other, nor shall any Party or any of its respective agents or employees have any
power or authority to assume any obligation of any kind, implied or expressed,
on behalf of any other or to bind others to any contract, commitment or
agreement whatsoever, or to make any representation on the others' behalf. This
Agreement shall not be construed as constituting either Party as the partner or
joint venture partner of the others, nor to create any form of legal association
which would impose liability upon one Party for the acts or failures to act of
the others.

      8.2 Force Majeure. No Party shall be liable for reasonable delays in the
performance of its obligations under this Agreement which result from causes
beyond its reasonable control, including without limitation acts of God,
strikes, war, riot, civil

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disorder, embargo, acts of civil and military authorities, fire, earthquake,
flood or inability to obtain labor or materials.

      8.3 Assignability; Binding Effect. Either Party may not assign this
Agreement without the prior written consent of the other which consent shall not
be unreasonably withheld or delayed. Subject to the provisions of this Section,
this Agreement shall be binding upon and shall inure to the benefit of the
Parties hereto and their respective successors and assigns.

      8.4 Entire Agreement. This Agreement, including all recitals in the
preamble hereto and Exhibits attached hereto, sets forth the entire agreement
and understanding between the Parties, contains all the understandings,
inducements, promises and representations between the Parties relating to the
matters referred to herein, and merges and supersedes all prior agreements,
commitments, arrangements, representations, writings and discussions between
them, whether written or oral. This Agreement may not be modified or amended
except by a written supplement, duly executed by each of the Parties.

      8.5 Notices. Any notice, demand or communication which under the terms of
this Agreement must or may be given or made by Aquila or Ambient shall be in
writing and shall be given or made by facsimile with confirmation of receipt,
certified or registered air mail, return receipt requested, or any delivery
services, requiring signature of receipt, addressed to the respective parties
noted above. Such notice, demand or other communication shall be deemed to have
been given on the date confirmed as the actual date of delivery by the delivery
service if sent by such service, and in the case of certified or registered air
mail - seven (7) business days following the date on which it was deposited
postage prepaid in the United States air mail (or the date shown on the actual
mail receipt if it is earlier).

      The above addresses may be changed at any time by giving prior written
notice as provided above.

      8.6 Severability. Each provision of this Agreement or part thereof shall
be severable. If, for any reason, any such provision or part thereof is finally
determined, by a court of agency having valid jurisdiction, to be invalid and
contrary to, or in conflict with, any existing or future law or regulation, such
determination shall not impair the operation of or affect the remaining
provisions of this Agreement, and such remaining provisions will continue to be
given full force and effect and shall continue to bind the Parties.

      8.7 Enforcement. The respective rights and remedies of each Party are
cumulative, and no exercise or enforcement by either Party of any right or
remedy hereunder shall preclude the exercise or enforcement by such Party of any
other right or remedy hereunder, or which such Party is entitled by law to
enforce. Each Party may waive any obligation of or restriction upon the other
Party under this Agreement only in writing. No failure, refusal, neglect, delay,
waiver, forbearance or omission of either Party to exercise any right under this
Agreement or to insist upon full compliance by the other with its obligations
hereunder shall constitute a waiver or any provision of this Agreement.

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      8.8 Construction. The headings appearing at the beginning of each section
of this Agreement are for convenience only and shall not in any way affect the
meaning or interpretation of this Agreement. The recitals shall be deemed to be
part of this Agreement. From time to time this Agreement and any of the
Appendices hereto may be modified by the Parties in accordance with Section 8.4
of this Agreement. As so modified, such Appendices shall be considered part of
this Agreement.

      8.9 Dispute Resolution; Governing Law. This Agreement shall be construed
and enforced in accordance with the internal laws of the State of New York
applicable to contracts wholly executed and performed therein. Each Party hereby
irrevocable agrees to the jurisdiction and venue for any action with the
appropriate court in the State of New York.

      8.10 Press Releases. Each of the Parties hereto may publicize the
existence and nature of this Agreement or the transactions contemplated hereby
or the subject matter hereof in any reasonable manner that they deem
appropriate; provided, however, that prior to any publication, presentation,
public announcement or press release concerning the specific terms and
conditions of this Agreement, each Party shall obtain the other's written
consent. Additionally, the Parties hereto agree as to the need to educate the
public with regard to the emerging PLT Technology and the Jointly Developed
Technology. Therefore, the Parties agree to issue joint media releases for the
purpose of educating the general public, along with media releases in a form
that has been approved in writing by all Parties and other media releases at
various milestones to be agreed to by the Parties.

      8.11 SEC Filings. Ambient's disclosure of the existence of this Agreement
and the terms thereunder in accordance with its reporting obligations under the
Securities Exchange Act of 1934, as amended, shall not be deemed to be a
violation of the Non-Disclosure Agreement or Section 8.10 so long as the
releasing Party has provided to the other Party, prior to the release to the
Securities and Exchange Commission, a copy of the provisions to be released and
has given good faith consideration to any request by the other Party to redact
specific provisions from disclosure.

      IN WITNESS WHEREOF, each of the Parties has caused this Agreement to be
duly executed on its behalf as of the Effective Date written above.

                                        AQUILA TECHNOLOGIES GROUP, INC.

                                        By: /s/ Steve Kadner
                                           -------------------------------------
                                           Name:  Steve Kadner
                                           Title: President

                                        AMBIENT CORPORATION

                                        By: /s/ John J. Joyce
                                           -------------------------------------
                                           Name:  John Joyce
                                           Title: Chief Executive Officer

                                        Dated November 2, 2001

                                     - 9 -Exhibit 10.3
                             SUBSCRIPTION AGREEMENT

         SUBSCRIPTION AGREEMENT (the "Agreement") made this 2nd day of November,
2001 (the "Effective Date"), by and between, Oscar Private Equity Investments,
L.P. , as purchaser ("Oscar") and Ambient Corporation ("Ambient" or the
"Company").

                               W I T N E S S E T H

      WHEREAS, the Company and Oscar entered into a certain Subscription
Agreement, dated June 15, 2001 (hereinafter, the "Stock Purchase Agreement")
whereby Oscar purchased 750,000 shares (the "Oscar Shares") of the Company's
Common Stock, par value $0.001 (the "Common Stock") and, in connection
therewith, the Company issued to Tabay an affiliate of Oscar, as a finder fee,
under a certain Finders Agreement between the Company and Oscar, dated as of
June 15, 2001 (the "Finders Agreement"), an additional 250,000 shares of Common
Stock (collectively with the Oscar Shares, the "Prior Issued Shares");

      WHEREAS, subsequent thereto, the Company and Oscar held discussions in
August-September 2001 (the "Consulting Agreement Negotiations") respecting the
establishment of a consulting arrangement between them pursuant to which Oscar
undertook to provide, inter-alia, on-going consulting services to the Company
and the Company undertook, inter-alia, to issue a certain number of additional
shares of Common Stock in consideration for such services;

      WHEREAS, certain disputes arose between Oscar and the Company relating to
the conclusion of a legally binding agreement reflecting the subject matter of
the Consulting Agreement Negotiations;

      WHEREAS, Oscar and Ambient desire to settle any and all differences
between them arising from that Consulting Agreement Negotiations and to
establish certain obligations of the parties under the Stock Purchase Agreement
and certain understandings reached in connection with the Consulting Agreement
Negotiations, all on the terms and conditions set forth herein.

      NOW, THEREFORE, in consideration of the terms and conditions hereafter set
forth the adequacy and sufficiency of which are hereby acknowledged, the parties
agree hereafter as follows:

1.    Subscription & Issuance. In consideration of the releases contained in
Section 2 hereunder, Ambient hereby issues to Oscar, and Oscar hereby accepts
such issuance, 650,000 shares of Common Stock (the "Purchased Shares").

2.    Releases.

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                                       2

      (a) Releases of Oscar and Tabay. In consideration for the undertakings of
the Company contained herein, including without limitation, the issuance to
Oscar of the Purchased Shares and the execution and delivery of that certain
Registration Rights Agreement (as defined below) by and between the Company and
Oscar and TABAY Holdings, LLC ("Tabay"), (i) each of Oscar and Tabay hereby
waives and releases the Company and each of its respective officers, directors,
employees, shareholders, agents, successors, and assigns from any claims,
demands, obligations, liabilities, rights, causes of action and damages, whether
liquidated or unliquidated, absolute or contingent, known or unknown, including,
without limitation, any claims arising out of the Consulting Agreement
Negotiations or any written instrument which presumably reflects any
understandings or agreements purportedly reached therein or the Stock Purchase
Agreement or the Finders Agreement and (ii) each of Oscar and Tabay
respectively, hereby waive all right under any and all provisions of the Stock
Purchase Agreement and the Finders Agreement, respecting the registration of the
Prior Issued Shares, provided that such waivers and releases shall be valid and
enforceable against Oscar and Tabay only so long as the Company materially
complies with each and every obligation that it has under each of (a) this
Agreement and (b) the Registration Rights Agreement.

      (b) Releases of the Company. In consideration for the undertakings of by
Oscar and Tabay contained herein (i) the Company hereby waives and releases each
of Oscar and Tabay and each of its respective officers, directors, employees,
shareholders, members, partners, agents, successors, and assigns from any
claims, demands, obligations, liabilities, rights, causes of action and damages,
whether liquidated or unliquidated, absolute or contingent, known or unknown,
arising out of the Consulting Agreement Negotiations or any written instrument
which presumably reflects any understandings or agreements purportedly reached
therein, except that the foregoing release shall not relate to any claim or
obligation of Oscar and/or Tabay which may arise under this Agreement or the
Registration Rights Agreement.

3.    Registration Rights Agreement.

            In partial consideration for the execution and delivery of this
Agreement by Oscar and Tabay, Ambient shall enter into the Registration Rights
Agreement with Oscar and Tabay, substantially in the form of Registration Rights
Agreement attached hereto as Exhibit A.

4.    Representations and Warranties of the Company.

      The Company hereby makes the following representations and warranties to
each of Oscar and Tabay:

      4.1 Due Authorization, Execution and Delivery. All requisite corporate
action on the part of the Company necessary for the authorization, execution and
delivery of each of this Agreement, the Registration Rights Agreement, the
issuance of the

<PAGE>
                                       3

Purchased Shares, and the performance of all obligations of the Company
hereunder and thereunder has been taken or will be taken prior to the delivery
of executed copies hereof and thereof and no further consent or authorization of
the Company or its Board of Directors or stockholders with respect to such
matters and actions is required. Each of this Agreement and the Registration
Rights Agreement, upon due execution and delivery by the Company, constitutes a
valid and binding obligation of the Company, enforceable in accordance with its
terms, except (i) as limited by applicable bankruptcy, insolvency,
reorganization, moratorium, and other laws of general application affecting
enforcement of creditors' rights generally, and (ii) as limited by laws relating
to the availability of specific performance, injunctive relief, or other
equitable remedies.

      4.2 The Purchased Shares. Upon issuance and delivery, the Purchased Shares
will be duly and validly issued, fully paid and nonassessable, and Oscar shall
have good and marketable title to such securities, free and clear of any liens,
pledges, encumbrances, taxes, charges or restrictions of any kind placed thereon
by the Company.

      4.3 Commission Documents, Financial Statements. Since January 1, 2001, the
Company has timely filed all reports, schedules, forms, statements and other
documents required to be filed by it with the Securities and Exchange Commission
(the "Commission") pursuant to the reporting requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), including material filed
pursuant to Section 13(a) or 15(d) of the Exchange Act (all of the foregoing
including filings incorporated by reference therein being referred to herein as
the "Commission Documents"). As of their respective dates, the Form 10-KSB and
the Form 10-QSBs filed by the Company with the Commission complied in all
material respects with the requirements of the Exchange Act and the rules and
regulations of the Commission promulgated thereunder and other federal, state
and local laws, rules and regulations applicable to such documents, and, as of
their respective dates, none of the Form 10-KSB nor any of the Form 10-QSBs
contained any untrue statement of a material fact or omitted to state a material
fact required to be stated therein or necessary in order to make the statements
therein, in light of the circumstances under which they were made, not
misleading. The financial statements of the Company included in the Commission
Documents comply as to form in all material respects with applicable accounting
requirements and the published rules and regulations of the Commission or other
applicable rules and regulations with respect thereto. Such financial statements
have been prepared in accordance with generally accepted accounting principles
("GAAP") applied on a consistent basis during the periods involved (except (i)
as may be otherwise indicated in such financial statements or the notes thereto
or (ii) in the case of unaudited interim statements, to the extent they may not
include footnotes or may be condensed or summary statements), and fairly present
in all material respects the financial position of the Company as of the dates
thereof and the results of operations and cash flows for the periods then ended
(subject, in the case of unaudited statements, to normal year-end audit
adjustments).

      4.4 Securities Law Matters. Based in part upon the representations herein
of Oscar set forth herein, the Company has complied and will comply with all
applicable federal and state securities laws, including without limitation, the
Securities Act of 1933,

<PAGE>
                                       4

as amended (the "Securities Act"), in connection with the offer, issuance and
sale of the Purchased Shares.

      4.5 Disclosure. No representation, warranty or statement by the Company in
this Agreement or the Registration Rights Agreement, contained, as of their
respective dates, or now contains, any untrue statement of a material fact or
omit to state a material fact necessary in order to make the statements made
herein or therein, in the light of the circumstances under which they were made,
not misleading.

5.    Representations of Oscar.

      Oscar makes the following representations and warranties to the Company:

      5.1 Accredited Investor. Oscar is an "accredited investor," as defined
under Regulation D of the Securities Act. To that end, Oscar has completed and
signed the Investor Questionnaire attached hereto as Exhibit B.

      5.2 Not for Resale. Oscar is acquiring the Purchased Shares for investment
purposes only, for its own account and not with a view to, or for resale in
connection with, the distribution or other disposition thereof.

6.    Lock-Up

      In consideration of the Company's undertakings hereunder, so long as the
Company has performed and continues to perform each and every of its obligations
under each of this Agreement and the Registration Rights Agreement, each of
Oscar and Tabay agree that from the Effective Date through June 15, 2002, it
will not to sell or otherwise transfer any of the Prior Issued Shares or the
Purchased Shares, except to any affiliate controlled by either such party or
with which it is under common control, whereupon the Company shall be notified
in writing of such transfer.

7.    Miscellaneous.

            (a) Entire Agreement. This Agreement constitutes the entire
agreement among the parties hereto with respect to the subject matter hereof and
supersedes any prior or contemporaneous understanding or agreement, written or
verbal, among the parties with respect to the subject matter hereof.

            (b) Amendments and Waivers. The provisions of this Agreement,
including the provisions of this sentence, may not be amended, modified or
supplemented, and waivers or consents to departures from the provisions hereof
may not

<PAGE>
                                       5

be given, unless the same shall be in writing and signed by the Company and each
of Oscar and Tabay.

            (c) Counterparts. This Agreement may be executed in one or more
counterparts, each of which when so executed shall be deemed to be an original
and, all of which taken together shall constitute one and the same Agreement. In
the event that any signature is delivered by facsimile transmission, such
signature shall create a valid binding obligation of the party executing (or on
whose behalf such signature is executed) the same with the same force and effect
as if such facsimile signature were the original thereof.

            (d) Governing Law. 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 law thereof. This Agreement shall not be interpreted
or construed with any presumption against the party causing this Agreement to be
drafted.

            (e) Severability. If any term, provision, covenant or restriction of
this Agreement is held to be invalid, illegal, void or unenforceable in any
respect, the remainder of the terms, provisions, covenants and restrictions set
forth herein shall remain in full force and effect and shall in no way be
affected, impaired or invalidated, and the parties hereto shall use their
reasonable efforts to find and employ an alternative means to achieve the same
or substantially the same result as that contemplated by such term, provision,
covenant or restriction. It is hereby stipulated and declared to be the
intention of the parties that they would have executed the remaining terms,
provisions, covenants and restrictions without including any of such that may be
hereafter declared invalid, illegal, void or unenforceable.

      IN WITNESS WHEREOF, Oscar executes this Subscription Agreement as of
November 2, 2001.

                     Oscar Private Equity Investments, L.P.

                     By: /s/ Timothy F. Sylvester
                        -------------------------------------
                                       Title:

The undersigned hereby agrees to the terms contained herein specifically
applying to it.

TABAY Holdings, LLC

By: /s/ Timothy F. Sylvester            November 2, 2001
   --------------------------------     ----------------------------------------
Title:                                  Date

<PAGE>
                                       6

ACCEPTANCE OF SUBSCRIPTION

The foregoing subscription and all duties and obligations attendant thereto is
hereby accepted by Ambient Corporation this 2nd day of November 2001, with
respect to the Purchased Shares.

Ambient Corporation

/s/ John J. Joyce

Title: Chief Executive Officer                November 2, 2001

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