Document:

<PAGE>

                                    EXHIBIT A

                                ESCROW AGREEMENT

     ESCROW AGREEMENT dated as of February 22, 2000 by and among EchoCath, Inc.,
a New Jersey corporation (the "Company"), and Buchanan Ingersoll Professional
Corporation, a Pennsylvania professional corporation (the "Escrow Agent").

                              W I T N E S S E T H:

     WHEREAS, the Company is offering (the "Offering") a minimum of 600,000
Shares and a maximum of 1,500,000 shares of Class A Common Stock of the Company
(the "Shares") for a purchase price of $0.75 per Share upon the exercise of one
(1) warrant for every (4) Shares purchased; and

     WHEREAS, the Escrow Agent has agreed to act as escrow agent and hold and
deliver the proceeds of the Offering upon each successive closing of the
Offering, as instructed by the Company pursuant to the terms of this Agreement.

     NOW THEREFORE, in consideration of the foregoing and of the mutual
agreements hereinafter contained, the parties hereto, intending to be legally
bound, do hereby agree as follows:

     1. The Company hereby appoints Buchanan Ingersoll Professional Corporation
as escrow agent in accordance with the terms and conditions set forth herein.
The Escrow Agent agrees to be appointed and to serve hereunder. The Escrow Agent
is hereby empowered on behalf of the Company to accept all wire transfers and to
endorse and collect all checks, drafts or other instruments received on account
of subscriptions for the Shares.

     2. Subject to the terms and conditions of this Agreement, the Escrow Agent
will hold and disburse all funds received by it as follows:

         (a) All funds received by the Escrow Agent pursuant to the terms of
this Agreement (the "Escrowed Property") shall be held, pending disbursement, in
the Escrow Agent's designated attorney trust account, which account does not
bear interest.

         (b) The Escrow Agent shall disburse all funds from time to time in
accordance with written instructions signed on behalf of the Company. Any such
instructions shall include the name of each subscriber in the Offering whose
subscription is being accepted and the amount of each subscription so accepted.
The Escrow Agent shall not be required to disburse any funds unless and until an
aggregate of 600,000 Shares are sold in the Offering.

         (c) In the event that the Company notifies the Escrow Agent that it has
not accepted a subscription, the Escrow Agent shall use reasonable efforts to
return funds deposited in respect of such subscription, without interest, to the
applicable subscriber. Such reasonable

<PAGE>

efforts may include, but shall not be limited to, wiring such funds to the
account from which it was received or sending a check, via first class United
States Postal Service mail, for the full amount of such funds to the subscriber
at the address indicated on the applicable subscription agreement. If the Escrow
Agent is not readily able to determine where to return any such funds, it shall
have no further obligation under this provision other than to safekeep such
funds.

         (d) In the event any unaccepted funds remain in the escrow past March
31, 2000 the scheduled expiration of the Offering (or such later date to which
the Offering may be extended), the Escrow Agent shall return such unaccepted
funds to the respective subscribers in accordance with the provisions of
subparagraph (c) above.

     3. The Escrow Agent shall not be under any duty to give the property held
by it hereunder any greater degree of care than it gives its own similar
property.

     4. This Escrow Agreement expressly sets forth all the duties of the Escrow
Agent with respect to any and all matters pertinent hereto. No implied duties or
obligations shall be read into this Agreement against the Escrow Agent. The
Escrow Agent shall not be bound by the provisions of any agreement relating to
the Offering except this Escrow Agreement.

     5. The Escrow Agent shall not be liable, except for its own gross
negligence or willful misconduct and, except with respect to claims based upon
such gross negligence or willful misconduct that are successfully asserted
against the Escrow Agent, the Company shall indemnify and hold harmless the
Escrow Agent from and against any and all losses, liabilities, claims, actions,
damages and expenses, including, without limitation, reasonable attorneys' fees
and disbursements, arising out of or in connection with this Escrow Agreement.

     6. The Escrow Agent shall be entitled to rely upon any order, judgment,
certification, demand, notice, instrument or other writing delivered to it
hereunder without being required to determine the authenticity or the
correctness of any fact stated therein or the propriety or validity of the
service thereof. The Escrow Agent may act in reliance upon any instrument or
signature believed by it to be genuine and may assume that any person purporting
to give receipt or advice or make any statement or execute any document in
connection with the provisions hereof has been duly authorized to do so. The
Escrow Agent shall be fully protected in any action taken hereunder in good
faith and shall not be responsible for any failure or inability of the Company
to honor any of the provisions of this Agreement. The Escrow Agent shall be
under no liability to the other parties to any document executed in connection
with the Offering (except this Agreement) or to anyone else by reason of any
failure on the part of any such party to perform such party's obligations under
such agreement.

     7. The Escrow Agent may act pursuant to the advice of counsel with respect
to any matter relating to this Agreement and shall not be liable for any action
taken or omitted in accordance with such advice.

     8. The Escrow Agent does not have any interest in the Escrowed Property
deposited hereunder but is serving as escrow holder only and having only
possession thereof. The Company shall pay or reimburse the Escrow Agent upon
request for any and all expenses, if

                                       2

<PAGE>

any, incurred by the Escrow Agent in connection with this Agreement (including,
without limitation, any wire transfer fees) and transfer taxes or other taxes
relating to the Escrowed Property incurred in connection herewith and shall
indemnify and hold harmless the Escrow Agent from any amounts that it is
obligated to pay in the way of such expenses and taxes.

     9. The Escrow Agent makes no representation as to the validity, value,
genuineness or the collectability of any security or other document or
instrument held by or delivered to it.

     10. The Escrow Agent may at any time resign as such by delivering the
Escrowed Property to any successor Escrow Agent designated by the Company in
writing, or to any court of competent jurisdiction, whereupon the Escrow Agent
shall be discharged of and from any and all further obligations arising in
connection with this Agreement. The resignation of the Escrow Agent will take
effect on the earlier of (a) the appointment of a successor (including a court
of competent jurisdiction) or (b) the day which is 30 days after the date of
delivery of its written notice of resignation to the Company. If at that time
the Escrow Agent has not received a designation of a successor Escrow Agent, the
Escrow Agent's sole responsibility after that time shall be to safekeep the
Escrowed Property until receipt of a designation of successor Escrow Agent or a
written disposition instruction by the Company or a final order of a court of
competent jurisdiction.

     11. In the event of any disagreement resulting in adverse claims or demands
being made in connection with the Escrowed Property, or in the event that the
Escrow Agent in good faith is in doubt as to what action it should take
hereunder, the Escrow Agent shall be entitled to retain the Escrowed Property
until the Escrow Agent shall have received (i) a final non-appealable order of a
court of competent jurisdiction directing delivery of the Escrowed Property or
(ii) a written agreement executed by the parties to the dispute directing
delivery of the Escrowed Property, in which event the Escrow Agent shall
disburse the Escrowed Property in accordance with such order or agreement. Any
court order shall be accompanied by a legal opinion by counsel for the
presenting party satisfactory to the Escrow Agent to the effect that said
opinion is final and non-appealable.

     12. The parties hereto hereby irrevocably submit to the jurisdiction of any
New Jersey state or federal court sitting in New Jersey in any action or
proceeding arising out of or relating to this Agreement, and the parties hereby
irrevocably agree that all claims in respect of such action or proceeding
arising out of or relating to this Agreement, shall be heard and determined in
such a New Jersey state or federal court. The parties hereto hereby consent to
and grant to any such court jurisdiction over the persons of such parties and
over the subject matter of any such dispute and agree that delivery or mailing
of any process or other papers in the manner provided herein above, or in such
other manner as may be permitted by law, shall be valid and sufficient service
thereof.

     13. No printed or other matter in any language which mentions the Escrow
Agent's name or the rights, powers, or duties of the Escrow Agent shall be
issued by the parties hereto or on such parties' behalf unless the Escrow Agent
shall first have given its specific written consent thereto.

                                       3
<PAGE>

     14. Notwithstanding anything to the contrary contained herein, the Escrow
Agent's duties and obligations hereunder, and this Agreement, shall terminate
upon the release and distribution of the Escrowed Property in accordance with
the terms of this Agreement. Notwithstanding the preceding sentence, paragraphs
5 and 8 hereof shall survive the resignation of the Escrow Agent or the
termination of this Agreement.

     15. This Agreement shall be binding upon and inure to the benefit of the
parties hereto and to each of the subscribers in the Offering and upon and to
each of their respective successors, heirs and assigns. Neither this Agreement
nor any of the rights or obligations hereunder may be assigned by any of the
parties hereto without the prior consent of the other.

     16. This Agreement shall be governed by the laws of the State of New
Jersey, except with regard to its conflict of law provisions.

     17. The obligations of the Escrow Agent hereunder shall be completed and
this Agreement shall terminate upon the delivery of all of the proceeds of the
Offering to the Company.

                            [Signature page follows]

                                       4

<PAGE>

     IN WITNESS WHEREOF, the parties have executed and delivered this Agreement
as of the date first above written.

                                           BUCHANAN INGERSOLL
                                           PROFESSIONAL CORPORATION

                                           By:__________________________________
                                              Name:  William J. Thomas
                                              Title: Member of the Firm

                                           ECHOCHATH, INC.

                                           By:__________________________________
                                              Name:  Frank A. DeBernardis
                                              Title: Chief Executive Officer

                                       5<PAGE>

                                                                    EXHIBIT 10.9

                              CONSULTING AGREEMENT
                              --------------------

CONSULTING AGREEMENT dated as of April 13th 2000, by and between VIANET
TECHNOLOGIES, INC. a Nevada corporation with offices at 83 Mercer Street (3rd
floor), New York, NY 10012 and CFM CAPITAL LIMITED, a Bermuda corporation with
offices at Reid House, 31 Church Street, Hamilton, Bermuda HMHX ("Consultant").

W I T N E S S E T H:
- - - - - - - - - -

WHEREAS, Vianet desires to retain the Consultant as a consultant and Consultant
desires to act as a consultant to Vianet, subject to and upon the terms and
conditions set forth herein. NOW, THEREFORE, in consideration of the foregoing
and the mutual covenants and agreements set forth herein, the parties hereto
agree as follows:

1.   Consultancy. Vianet hereby retains consultant and Consultant hereby agrees
     to act as a consultant to Vianet. Consultant shall perform such services
     for Vianet as agreed with the Board of Directors of Vianet from time to
     time (the "Consulting Services"). Consultant agrees to cause Peter Leighton
     or such other persons approved by Vianet to perform the Consulting Services
     on behalf of the Consultant. The Consultant shall exercise its own
     reasonable judgment and employ such means as it, in good faith, determines
     are reasonable in performing the Consulting Services, and Vianet will not
     exercise any control over the methods or means employed by the Consultant
     in performing the Consulting Services. The Consulting Services shall be
     performed at such times and at such locations as Consultant shall
     determine.

<PAGE>

2.   Independent Contract or Status. It is understood and agreed that in the
     performance of the Consulting Services by the Consultant hereunder, it is
     acting as an independent contractor and not in any way as an employee or
     agent of Vianet. The Consultant will determine the hours of work of its
     employees and the Consultant's employees are not required to work any
     specified number of hours in any week. Any time off, including weekends and
     vacation, will be solely and entirely at the discretion of the Consultant.
     The Consultant may be required upon request of the Board, to submit to
     Vianet written or oral reports regarding its activities. Employees of the
     Consultant and others retained by the Consultant are not employees of
     Vianet for purposes of worker's compensation, unemployment insurance,
     medical, disability and group life insurance and they are not eligible to
     participate in any welfare, pension, profit sharing or fringe benefit plan
     or arrangement of Vianet.

3.   Consulting Fees. During the Term, as full compensation for the Consulting
     Services, Vianet shall pay to the Consultant a consulting fee as described
     in Appendix A to this document. In addition to the Base Fee, the Consultant
     shall be paid such additional compensation as shall be determined from time
     to time by the Board of Directors of Vianet and approved by the Board of
     Directors of Vianet as provided for in Appendix A. It is understood that
     Vianet will not withhold any income taxes, unemployment taxes or other
     taxes and that the Consultant is solely responsible for paying and
     reporting all taxes, including income taxes and estimates thereof for
     itself and all employees, agents or contractors. Vianet will report to the
     appropriate tax authorities the amounts paid to the Consultant and, even
     though the Consultant is an independent contractor, if Vianet is required
     by law, or is advised by its accountants or attorneys that it is required
     by law to deduct for withholding, or other taxes, it shall be free to do
     so, which taxes if not previously deducted shall be reclaimable from the
     consultant.

                                     Page 2

<PAGE>

4.   Expenses. In addition to the consulting fees provided for in Section 3
     above, Vianet shall reimburse the Consultant for reasonable costs and
     expenses incurred by the Consultant in performing the Consulting Services,
     subject to review by the Board of Directors of Vianet or a senior officer
     of Vianet designated by the Board of Directors of Vianet.

5.   Use of Vianet's Facilities.  Employees of the Consultant are not required
     to use the office facilities of Vianet in performing the Consulting
     Services hereunder.

6.   Term. The term of this Agreement shall commence as of January 1st 2000 and
     shall continue for a period of three (3) years (the "Term"). At the option
     of the Consultant, exercisable by written notice delivered by the
     Consultant to Vianet not less than thirty (30) days prior to the end of the
     Initial Term, this Agreement shall be renewed for an additional two (2)
     years (the "Renewal Term").

7.   Termination.

     7.1  Vianet or Consultant may terminate this Agreement in the event the
          other party fails to perform in accordance with the provisions of this
          Agreement.

     7.2  Vianet may terminate this Agreement, at any time, upon thirty (30)
          days written notice, to Consultant for any reason whatsoever.

     7.3  Upon termination Consultant shall cease all provision of services and
          no invoice shall be made for services performed after notice of
          suspension or termination. Upon termination, for any reason except
          breach of this agreement by Consultant, of this Agreement or a portion
          of the services covered hereunder, Vianet shall pay to Consultant an
          amount equal to the Severance Amount as provided in Section 8 of this
          Agreement.

                                     Page 3

<PAGE>

     7.4  Termination of this Agreement or a portion of any services hereunder
          except for breach of this agreement by Consultant shall not prejudice
          or affect the rights or remedies of either Vianet or Consultant
          against the other in respect of any breach of the Agreement which
          occurred before the effective date of termination and shall not
          prejudice the rights and remedies of Consultant in respect of any sum
          or sums of money owed or owing from Vianet.

8.   Severance Payment. Upon termination of this Agreement by Vianet or a change
     in control of Vianet, in addition to earned but unpaid Consulting Fees
     payable in accordance with Section 3, Vianet shall pay to Consultant
     severance in the amount equal to two times the Base Fee as identified in
     Appendix A. The severance amount shall be payable in quarterly installments
     with the first payment due not later than thirty (30) days after
     termination.

9.   Disclaimers and Limitations of Liability. It is expressly understood and
     agreed that Vianet shall NOT be responsible nor liable for any loss,
     damage, penalty, or the like, financial or otherwise, caused by:

     (i) failure by any consultant, advisor, contractor, supplier, or any other
     persons, individuals or firms NOT employed by Vianet to discharge its
     contractual obligations; or

     (ii) any delay, modification, or suspension of the time schedule for
     performing the services hereunder whether agreed or not agreed with
     Consultant, which is NOT the responsibility of Vianet, its agents, or
     consultants; or

     (iii) any negligent work carried out by the Consultant or by any third
     party other than Vianet, its agents, or sub-consultants, or employees; or

     (iv) the failure of any person NOT employed or contracted with by Vianet to
     discharge any legal duty or obligation whatsoever.

                                     Page 4

<PAGE>

10.  Confidentiality. The Consultant hereby agrees that during and after the
     term of this Agreement, neither it nor any of its employees nor others
     retained by the Consultant to perform some or all of the services to be
     performed hereunder, will divulge any confidential or proprietary
     information belonging to Vianet or any company associated with Vianet or to
     any customer of Vianet and neither the Consultant nor any employee of the
     Consultant nor any other person retained by the Consultant will make
     available to others any Vianet or account list, price list, business plan,
     trade secret, document, file, paper or data of any kind, in whatever form
     embodied, concerning the business or financial affairs of Vianet, its
     associated companies, or its customers or remove any of the foregoing from
     the premises of Vianet.

11.  Assignment. Except as otherwise provided herein, the Consultant may not
     assign this Agreement or delegate any of its obligations hereunder, without
     the prior written consent of Vianet and Vianet may not assign this
     Agreement, or delegate any of its obligations hereunder, without the prior
     written consent of the Consultant. Any assignment or delegation in
     violation of the provisions hereof shall be void and of no effect.

12.  Entire Agreement; Modification; Binding Effect. This Agreement constitutes
     the entire agreement between the Consultant and Vianet and supersedes all
     prior understandings and agreements concerning the subject matter hereof.
     This Agreement (including this provision against oral modification) may not
     be changed or terminated, and no provision hereof may be waived orally. No
     modification, waiver or termination hereof shall be binding upon either
     party unless in writing and signed by or on behalf of the party against
     which the modification, waiver or termination is asserted. This Agreement
     shall be binding upon and shall enure to the benefit of the Consultant and
     Vianet, their successors and permitted assigns.

                                     Page 5

<PAGE>

13.  Notices. Any notice or other communication required or permitted hereunder
     shall be sufficiently given if delivered personally, or, if sent by
     registered or certified mail, postage pre-paid, return receipt requested,
     addressed to the party intended to receive such notice at the address set
     forth above, or such other address as such party may indicate in the manner
     provided for notices herein. Any notice or communication shall be deemed to
     have been given upon the date personally delivered or, if mailed, the
     earlier of the date it is received and three (3) days after the date so
     mailed.

14.  Governing Law. This Agreement shall be governed by, and construed in
     accordance with, the laws of the State of New York.

IN WITNESS WHEREOF, the parties have signed this Agreement as of the date above
written.

                                                      VIANET TECHNOLOGIES, INC.

                                  By:        __________________________________

                                  Position:  __________________________________

                                                            CFM CAPITAL LIMITED

                                  By:        __________________________________

                                  Position:  __________________________________

                                     Page 6

<PAGE>

                                   APPENDIX A

App. 1:  The Base Fee for the Term of the Agreement shall be $250,000 per
         annum, payable in twelve equal installments on the last day of each
         calendar month.

App. 2:  In addition to the Base Fee the Consultant shall be paid such
         additional compensation as shall be determined from time to time by the
         Board of Directors of Vianet and approved by the Board of Directors of
         Vianet.

App. 3:  In determining the amount of the additional compensation The Board of
         Directors will take into consideration the attainment of specific
         criteria as agreed with the Consultant from time to time.

                                     Page 7

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00007-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00007-of-00352.parquet"}]]