Document:

<PAGE>

                                                                  Exhibit 10.1.1

                                     [LOGO]
                             Great Oaks Properties

14010 Columbet Avenue                                            LLOYD MARTIN
San Martin, CA 95046                                             Project Manager
(408) 683-2091
Fax (408) 683-2034

                                   ADDENDUM #7
          TO STANDARD INDUSTRIAL /COMMERCIAL MULTI-TENNANT LEASE- GROSS
                               DATED JUNE 1, 2000
                      FOR 22 GREAT OAKS BLVD., SAN JOSE, CA
                            FOR SUNRISE TELECOM, INC.

By mutual agreement, Sunrise Telecom, Inc. and Great Oaks Properties agree to
remove from the lease, dated June 22, 1999, the upstairs portion of the lease
area (29,775 sq ft) with appurtenant first floor lobby area, staircase and
elevator only. Sunrise Telecom, Inc. to maintain it's possession of the first
floor, less the lobby area, staircase and elevator, at 22 Great Oaks Blvd.,
subject to the lease terms. The effective date of this addendum is March 5-
2002.

Conditions for release of Sunrise Telecom, Inc second floor lease agreement are:

     A.   Sunrise will remove the door and doorjamb, and close the opening under
          the stair on the first floor lobby.

     B.   Secure the door into the Sunrise manufacturing area from the lobby.

     C.   Reinstall the two doors on the second floor at the elevator and stair
          to the lobby. These doors are to be fire-rated and must be installed
          to meet the Fire Marshall's requirements.

     D.   Since the electrical meter reads usage for the second floor and first
          floor of Sunrise Telecom, Inc., Great Oaks Properties will pay the
          PG&E electrical charges only. The monthly rent will be increased by
          $4,400 per month to reflect these charges based on an estimated 30,000
          KWH per month and an 8 hour per day/ 5 days per work week on just the
          first floor at a PG&E rate of .147 per KWH. This change will be
          effective March 5, 2002 at the change of the PG&E billing to Great
          Oaks Properties.

     E.   Sunrise Telecom, Inc. agrees that it shall not give notice under
          Addendum 5 as to the remaining first floor space before July 5, 2002.

     F.   Great Oaks Properties shall have unrestricted rights to show the
          second floor area to prospective tenants following the execution of
          this Lease Addendum #7.

                                   Page 1 of 2

<PAGE>

     G.   All other conditions of the lease shall remain in full force.

     H.   Sunrise to install exit signs and emergency lighting as per code to
          the second floor area prior to March 5, 2002.

     I.   This agreement is null and void if not fully executed by Wednesday,
          November 21, 2001.

Read and approved on this 20 day               Read and approved on this 20 day
of November, 2001                              of November, 2001.

/s/ Lloyd E. Martin                            /s/  Peter L. Eidelman
----------------------------------             --------------------------------
Lloyd E. Martin                                Peter L. Eidelman
General Partner                                Chief Financial Officer

                                  Page 2 of 2<PAGE>

                                                                  Exhibit 10.3.2

[LOGO] Bank of America

================================================================================

                                                          Amendment to Documents

                   AMENDMENT NO. 3 TO BUSINESS LOAN AGREEMENT

     This Amendment No. 3 (the "Amendment") dated as of NOVEMBER 30, 2001, is
between Bank of America, N.A. (the "Bank") and Sunrise Telecom Incorporated (the
"Borrower").

                                    RECITALS
                                    --------

     A. The Bank and the Borrower entered into a certain Business Loan Agreement
dated as of May 22, 2000, as previously amended (the "Agreement").

     B. The Bank and the Borrower desire to further amend the Agreement.

                                    AGREEMENT
                                    ---------

     1. Definitions. Capitalized terms used but not defined in this Amendment
        -----------
shall have the meaning given to them in the Agreement.

     2. Amendments. The Agreement is hereby amended as follows:
        ----------

          2.1 Subclause 1.6 (a) (ii) of the Agreement is amended to read in its
     entirety as follows:

               "(ii)Standby letters of credit with a maximum maturity of 365
                    days but not to extend more than 365 days beyond the
                    Facility No. 1 Expiration Date. The standby letters of
                    credit may include a provision providing that the maturity
                    date will be automatically extended each year for an
                    additional year unless the Bank gives written notice to the
                    contrary; provided, however, that each letter of credit must
                    include a final maturity date which shall not be subject to
                    automatic extension."

     3. Representations and Warranties. When the Borrower signs this Amendment,
        ------------------------------
the Borrower represents and warrants to the Bank that: (a) there is no event
which is, or with notice or lapse of time or both would be, a default under the
Agreement except those events, if any, that have been disclosed in writing to
the Bank or waived in writing by the Bank, (b) the representations and
warranties in the Agreement are true as of the date of this Amendment as if made
on the dale of this Amendment, (c) this Amendment is within the Borrower's
powers, has been duly authorized, and does not conflict with any of the
Borrower's organizational papers, and (d) this Amendment does not conflict with
any law, agreement, or obligation by which the Borrower is bound.

     4. Effect of Amendment. Except as provided in this Amendment, all of the
        -------------------
terms and conditions of the Agreement shall remain in full force and effect.

     This Amendment is executed as of the date stated at the beginning of this
Amendment.

<TABLE>
Bank of America, N.A.                              Sunrise Telecom Incorporated
<S>                                                <C>

X /s/ Lakshmi Wolterding                           X  /s/ Paul Chang
 ---------------------------------------------      ------------------------------------------------
By: Lakshmi Wolterding, Senior Vice President      By: Paul Chang, President Chief Executive Officer

                                                   X  /s/ Keith D. Laton
                                                    ------------------------------------------------
                                                   By: Keith D. Laton, Director of Tax and Treasury
</TABLE>

                                      -1-<PAGE>

                                                                   EXHIBIT 10.10

CONFIDENTIAL TREATMENT REQUESTED. CONFIDENTIAL PORTIONS OF THIS DOCUMENT HAVE
BEEN REDACTED AND HAVE BEEN SEPARATELY FILED WITH THE COMMISSION.

                       [LOGO]SUNRISE TELECOM INCORPORATED

                  2002 Section 16 Executive Officer Bonus Plan

Executive Officers will participate in the 2002 Executive Officers Bonus Plan
(the "Executive Officers Bonus Plan") as stated below, subject to approval by
the Compensation Committee of the Board of Directors of the Company.

Executive Officers
------------------
Paul K. Chang - CEO & President
Paul A. Marshall - COO & VP Marketing
Peter L. Eidelman - CFO & Treasurer
Jeong E. Joo - CTO
Raffaele Gerbasi - President & General Manager Cable Broadband

                        2002 Section 16 Executive Officer
                               Bonus Plan Formula

1.   The Section 16 Executive Officer Bonus will be based on a percentage of
     their base compensation for the period enrolled in the plan.

2.   The bonus will be based on both the year's GAAP Net Income percentage, and
     sales growth percentage for the Consolidated Company. Any GM's included in
     this plan will be evaluated as well on their divisional performance in the
     same matrix with Executive Officers adjustments based on both divisional
     and the consolidated Company Growth and GAAP Net Income performance.

3.   The bonus should help to motivate the Executive Officers to achieve
     exceptional company financial performance, while providing little or no
     reward for lack of growth and profitability.

4.   In the event of a material corporate reorganization, the bonus may need to
     incorporate any change in the revenue mix and profit due to an acquisition
     or divestiture with the possible adjustment of the prior year base for the
     divisional impacted.

<PAGE>

5.   The Bonus will not be more than what is calculated below and is subject to
     approval by the compensation committee. Yearly net income, yearly sales,
     previous year sales are as reported on the company's audited financial
     statements.

Bonus = [*]

definitions:
p = year profit % = yearly net income / yearly sales
sg = sales growth percentage = (current year sales - previous year sales) /
previous year sales

     * Confidential material redacted and filed separately with the Commission.

                                       2<PAGE>

                                                                   Exhibit 10.11

                              EMPLOYMENT AGREEMENT
                              --------------------

MEMORANDUM OF AGREEMENT made at Montreal, Quebec, on the 8th day of January
2001.

BY AND BETWEEN:                      Avantron Technologies, Inc., a corporation
                                     constituted pursuant to the Canada Business
                                     Corporation Act, with a place of business
                                     at 10, 281 Renaude-Lapointe, Anjou, Quebec
                                     HlJ 274, Canada;

                                       (hereinafter, together with any successor
                                         corporation, the "Corporation");

AND:                                 Raffaele Gerbasi, executive, residing at 31
                                     Chambord Street, Blainville, Quebec J7B
                                     1L1, Canada;

                                                   (hereinafter, the "Employee")

     WHEREAS the Employee, or an entity he controls, holds shares in the capital
of the Corporation;

     WHEREAS Sunrise Telecom Canada (hereinafter together with its parent and
other affiliated corporations, "Sunrise") will purchase from the Employee and
other shareholders (hereinafter, collectively, the "Sellers"), all of the shares
held by the Sellers in the capital of the Corporation, pursuant to a share
purchase agreement dated January 8, 2001 (hereinafter, the "Share Purchase
Agreement"), the whole effective on the Closing Date;

     WHEREAS the parties have agreed that the Employee shall remain in the
employ of the Corporation, or its successor corporation, after the Closing Date;

     WHEREAS the parties consequently desire to enter into this Agreement
setting forth the terms and conditions of the employment of the Employee with
the Corporation after the Closing Date and the benefits attaching thereto;

     NOW, THEREFORE, THIS AGREEMENT WITNESSETH THAT, in consideration of the
mutual covenants herein contained, the parties agree as follows:

                                    ARTICLE I
                                 INTERPRETATION
                                 --------------

1.1 Definitions. Where used herein or in any amendments hereto or in any
    -----------
communication required or permitted to be given hereunder, the following words
and phrases shall have the following meanings, respectively, unless the context
otherwise requires:

<PAGE>

     (a)  "Agreement" shall mean this Employment Agreement and all instruments
          supplemental hereto or in amendment or confirmation hereof; "herein",
          "hereof", "hereto", "hereunder" and similar expressions mean and refer
          to this Agreement and not to any particular Article, Section,
          Subsection or other subdivision; "Article", "Section", "Subsection" or
          other subdivision of this Agreement means and refers to the specified
          Article, Section, Subsection or other subdivision of this Agreement;

     (b)  "Business" shall mean the business conducted by the Corporation at the
          time of the signature of this Agreement, the business conducted by the
          Corporation up to the termination of the Employee's employment as well
          as the business that the Corporation was in the process of developing
          at the time of the termination of the Employee's employment. For
          greater certainty, the business conducted by the Corporation at the
          time of the signature of this Agreement can be described as making,
          manufacturing, marketing, selling, offering to sell, advertising or
          distributing of telecommunications test equipment;

     (c)  "Cause" shall mean any event or circumstance which, pursuant to
          applicable law, constitutes serious reason for dismissal without
          either notice, payment in lieu of notice, severance pay or any
          indemnity whatsoever;

     (d)  "Closing Date" shall have the meaning which is set forth in the Share
          Purchase Agreement;

     (e)  "Customer" shall mean any and all Persons having purchased the
          Corporation's or Sunrise's goods or services in connection with the
          Business at any time during the two (2) year period preceding the
          termination of the Employee's employment;

     (f)  "Confidential Information" shall mean all information howsoever
          received by the Employee from or through the Corporation or Sunrise in
          whatever form (oral, written, machine readable or otherwise)
          pertaining to the Corporation or Sunrise, including, without
          limitation, all information related to, processes, formulas, research,
          developments, financial information, marketing information, names or
          lists of Customers, prospective Customers, suppliers or distributors;
          provided, however, that the phrase "Confidential Information" shall
          not include information that:

          (i)   is in the public domain, or generally known in the industry in
                which the Corporation and Sunrise operate, without any fault or
                responsibility of the Employee,

          (ii)  is approved in writing by the Corporation and Sunrise for
                disclosure by the Employee prior to its actual disclosure,

          (iii) is lawfully received by the Employee from a Person (other than
                from any of the other Sellers) who is lawfully in possession of
                such Confidential

                                       2

<PAGE>

               Information and such Person was not restricted from disclosing
               same to the Employee;

     (g)  "Incapacity" shall mean any medical condition whatsoever which leads
          to the Employee's absence from his job function for a continuous
          period of six (6) months without the Employee being able to resume
          functions on a full time basis at the expiration of such period; and
          unsuccessful attempts to return to work for periods under fifteen (15)
          days shall not interrupt the calculation of such six (6) month period;

     (h)  "Intellectual Property Rights" shall mean all registered and
          unregistered intellectual property rights including, without limiting
          the generality of the foregoing, all intellectual property rights
          attached to:

          (i)  all inventions, trademarks, trade names, copyrightable Works,
               industrial designs, trade secrets, topographies and all other
               intellectual property rights; and

          (ii) all domestic and foreign registrations, applications and renewals
               thereof for registration of intellectual property rights;

     (i)  "Person" shall mean an individual, corporation, company, cooperative,
          partnership, trust, unincorporated association, entity with juridical
          personality or governmental authority or body; and pronouns which
          refer to a Person shall have a similarly extended meaning;

     (j)  "Territory" shall mean the every State of the United States and every
          Province of Canada; and

     (k)  "Works" shall mean all discoveries, inventions, improvements,
          innovations, processes, topographies, codes, software, know-how,
          recipes, technology, formulas, drawings, specifications for products,
          materials and equipment, process development and ideas including all
          related documentation on whatever support it is, of which the Employee
          is solely or jointly in whole or in part, an inventor, discoverer,
          author, conceiver or originator.

1.2  Preamble. The preamble hereof shall form an integral part of this
     --------
Agreement.

                                   ARTICLE II
                                     DUTIES
                                     ------

2.1  As President of the Corporation, the Employee's duties and responsibilities
shall include, above and beyond those inherent to the Employee's title and
normally pertaining to it, those compatible with the Employee's position and
which the Corporation or its Board of Directors may delegate to him from time to
time.

                                       3

<PAGE>

                                   ARTICLE III
                                    DURATION
                                    --------

3.1  This Agreement is hereby concluded for an indeterminate period of time.

                                   ARTICLE IV
                                     SALARY
                                     ------

4.1  The Employee shall receive an annual base salary of Three hundred and
ninety thousand Canadian dollars (Cdn$390,000.00), to be paid in twenty-four
(24) equal installments (hereinafter, the "Base Salary"). Base Salary may be
modified upwards or downwards in the reasonable discretion of the Corporation.

                                    ARTICLE V
                                      BONUS
                                      -----

5.1  For the first reference year following the Closing Date, the Employee shall
receive a bonus of two million thirty one thousand, one hundred seventy Canadian
dollars (Cdn$2,031,170). Such bonus is contingent that the Employee be an
employee in good standing of the Corporation, unless his employment was
terminated by death, by total disablement, or by the Corporation for its
convenience, on the first anniversary of the Closing Date, that there has been
no breach of this Employment Agreement, and that this Employment Agreement, in
its current form, be in full force and effect (unless his employment was
terminated by death, total disablement or by the Corporation for its
convenience). This bonus is contingent on the shareholders of the Corporation
voting unanimously in favor of it. Such vote must occur before the date hereof.

5.2  For the second reference year following the Closing Date, the Employee
shall receive a bonus of two million and three hundred and twenty-one thousand
and two hundred and fifty seven Canadian dollars (Cdn$2,321,257). Such bonus is
contingent that the Employee be an employee in good standing of the Corporation,
unless his employment was terminated by death, by total disablement, or by the
Corporation for its convenience, on the second anniversary of the Closing Date,
that there has been no breach of this Employment Agreement, and that this
Employment Agreement be in full force and effect (unless his employment was
terminated by death, total disablement or by the Corporation for its
convenience). This bonus is contingent on the shareholders of the Corporation
voting unanimously in favor of it. Such vote must occur before the date hereof.

5.3  After the second reference year, any bonus, which the Employee will be
eligible to receive, shall be reviewed by the Board of Directors on a yearly
basis. Any bonus shall be subject to the attainment of certain objectives set
forth by the Corporation. In addition, the Employee shall receive an award of
options to purchase the stock of Sunrise Telecom Incorporated, such award to be
made in accordance with the terms and conditions established by the Compensation
Committee of the Board of Directors of Sunrise Telecom Incorporated at its next
meeting after the date hereof.

                                       4

<PAGE>

5.4  Employee's bonus earned under Section 5.1 and 5.2 shall be payable to his
heirs only in the event that his employment was terminated by death.

                                   ARTICLE VI
                              BENEFITS AND VACATION
                              ---------------------

6.1  The Employee shall participate in all benefit programs and/or plans which
are presently granted or which, at any time during his employment, may be
granted to management employees of the Corporation or its parent corporation,
the whole in accordance with the actual programs or plans that the Corporation
may institute from time to time or as otherwise required under any applicable
law.

6.2  All authorized expenses incurred by the Employee during his employment in
connection with the performance of his duties and supported with appropriate
vouchers shall be paid by the Corporation.

6.3  The Employee shall be granted twenty-five (25) days per year of paid
vacation, to be taken at times mutually agreed upon between the Employee and the
Corporation.

                                   ARTICLE VII
                                     LOYALTY
                                     -------

7.1  The Employee shall act with diligence, loyalty and honesty and shall make
all necessary efforts to promote the Corporation's legitimate interests.

                                  ARTICLE VIII
                                 CONFIDENTIALITY
                                 ---------------

8.1  The Employee hereby agrees not to use, divulge, diffuse, sell, transfer,
give, publish, reproduce, circulate, or otherwise distribute to any Person, or
otherwise make public, any Confidential Information.

8.2  Any document or work composed, assembled or produced by the Employee or the
Corporation and containing Confidential Information (including, without
limitation, all notes, extracts, text or references from which any Confidential
Information can be implicitly or otherwise revealed or understood) shall be
deemed to be Confidential Information within the meaning of this Agreement and
shall be treated as such.

8.3  Confidential Information and all embodiments thereof (including any
reproduction) shall remain the sole property of the Corporation and shall be
returned to the Corporation immediately upon request to this effect or
immediately after the termination of the Employee's employment.

8.4  Anything to the contrary herein notwithstanding, disclosure of Confidential
Information shall not be precluded if such disclosure is in response to a valid
order of a governmental body or is otherwise required by law; provided however
that the Employee shall, if reasonably

                                       5

<PAGE>

   ble, first have given notice thereof to the Corporation and shall have, as
---
reasonably    ble:
           ---

     (a)  fully cooperated in the Corporation's attempt, if any, and at the
          Corporation's cost, to obtain a "protective order" from the
          appropriate governmental body; or

     (b)  fully cooperated in the Corporation's attempt, if any, and at the
          Corporation's cost, to classify such documents to prevent access by
          the public, in accordance with the provisions of any law pertaining to
          freedom of information.

                                   ARTICLE IX
                                     WORKS
                                     -----

     With respect to Works made or conceived by him during his employment or
within the three (3) month period following the termination of his employment
with the Corporation for any reason, the Employee shall perform the following:

     (a)  promptly disclose and describe such Works in writing to the
          Corporation;

     (b)  assign (and the Employee does hereby assign) to the Corporation or
          such Person designated by the Corporation, without further
          compensation (but at the Corporation's expense), upon request and in
          the manner prescribed by the Corporation, all his rights, title and
          interest in and to said Works and to Intellectual Property Rights
          related to said Works throughout the world and waive (and the Employee
          does hereby waive) any and all other rights that are non-assignable,
          including but not limited to moral rights in all copyrightable Works;

     (c)  deliver promptly to the Corporation, upon request and in the form and
          manner prescribed by the Corporation (without charge to the
          Corporation but at the Corporation's expense), all written instruments
          and documentation relating to said Works and Intellectual Property
          Rights and do such acts as deemed necessary by the Corporation to
          obtain, maintain and to transfer all rights and title thereto to the
          Corporation at the Corporation's cost; and

     (d)  give all assistance that may be required by the Corporation or the
          Person designated by the Corporation, at the Corporation's cost, to
          enable it to protect or exploit the Works and Intellectual Property
          Rights in any country of the world.

9.2  In consideration of the salary that the Employee receives from the
Corporation, all Works (including all data and records pertaining thereto) that
the Employee may invent, discover, author, originate or conceive during his
employment with the Corporation or during the three (3) month period following
the termination of his employment for any reason and all Intellectual Property
Rights relating thereto shall be the sole and exclusive property of the
Corporation.

9.3  The provisions of sections 9.1 and 9.2 shall not apply to Works that
fulfill all of the following criteria:

                                       6

<PAGE>

     (a)  for which no equipment, supplies, facility or Confidential
          Information, Intellectual Property Rights or trade secrets belonging
          to the Corporation or to Sunrise were used;

     (b)  which do not relate to the Business or to the Corporation's or
          Sunrise's actual or demonstrably anticipated processes, research or
          development which the Employee had access to or knowledge of; and

     (c)  which do not result from any work performed by the Employee for the
          Corporation or for Sunrise.

     Schedule A attached hereto contains a list and brief description of all
Works the Employee made or conceived prior to or since the beginning of his
employment with the Corporation and that the Employee and the Corporation
believe should be excluded from the application of the provisions of sections
9.1 and 9.2.

                                    ARTICLE X
                         OBLIGATION OF NON-COMPETITION
                         -----------------------------

10.1 The Employee shall not, during his employment and for a period of two (2)
years following the termination of his employment, on his own behalf or on
behalf of any Person, whether directly or indirectly, in any capacity
whatsoever, alone, through or in connection with any Person, carry on or be
employed by, be engaged in or have any financial or other interest in or be
otherwise commercially involved in any endeavour, activity or business in all or
part of the Territory which is in competition, in whole or in part, with the
Business. Notwithstanding the foregoing, the Employee may invest passively in
any business through mutual funds.

                                   ARTICLE XI
                  OBLIGATION OF NON-SOLICITATION OF CUSTOMERS
                  -------------------------------------------

11.1 The Employee shall not during his employment and for a period of one (1)
year following the termination of his employment, on his own behalf or on behalf
of any Person, whether directly or indirectly, in any capacity whatsoever,
alone, through or in connection with any Person, for any purpose which is in
competition, in whole or in part, with the Business, solicit any Customer or
procure or assist in the soliciting of any Customer.

                                   ARTICLE XII
                  OBLIGATION OF NON-SOLICITATION OF EMPLOYEES
                  -------------------------------------------

12.1 The Employee shall not, during his employment and for a period of one (1)
year following the termination of his employment, on his own behalf or on behalf
of any Person, whether directly or indirectly, in any capacity whatsoever,
alone, through or in connection with any Person, employ, offer employment to or
solicit the employment or engagement of or otherwise entice away from the
employment of the Corporation or Sunrise any individual who is employed by the
Corporation or Sunrise at the time of the termination of the Employee's
employment or who was employed by the Corporation or Sunrise in the six (6)
month period preceding the termination of the Employee's employment.

                                       7

<PAGE>

                                  ARTICLE XIII
                           TERMINATION OF EMPLOYMENT
                           -------------------------

13.1 The parties hereto acknowledge and expressly agree that the Employee's
employment may be terminated in any of the following eventualities:

     (a)  At any time, for Cause, on simple notice from the Corporation to the
          Employee, the whole without other notice, pay in lieu of notice,
          severance pay or any indemnity whatsoever, except as may otherwise be
          required by applicable law; or

     (b)  Upon the death or the Incapacity of the Employee, the whole without
          any notice, pay in lieu of notice, severance pay or any indemnity
          whatsoever, except as may otherwise be required by applicable law;

     (c)  Upon ninety (90) days notice in writing from the Employee to the
          Corporation, specifying the intention of the Employee to resign; in
          which event the Corporation shall only be obliged to pay to the
          Employee his Base Salary plus benefits (excluding bonus) and other
          allowable expenses paid by the Corporation hereunder, for such
          remaining part of the period specified in the said notice from the
          Employee and the Corporation shall have no further obligation
          hereunder in the event of such resignation of the Employee.

     (d)  At any time, without Cause, on simple notice from the Corporation to
          the Employee, subject to Article XIV.

                                   ARTICLE XIV
                TERMINATION ALLOWANCE: TERMINATION WITHOUT CAUSE
                ------------------------------------------------

14.1 Should the Employee's employment be terminated by the Corporation without
Cause, the Employee shall receive and the Corporation hereby undertakes to give
to the Employee, a notice or an indemnity in lieu of notice representing the
Employee's Base Salary plus benefits (excluding bonus) for a period to be
calculated as follows: one (1) month per year of service, with a minimum of six
(6) months and a maximum of eighteen (18) months.

14.2 The Employee recognizes and accepts that the Corporation shall not, in any
case, be responsible for any additional amount, indemnity in lieu of notice,
severance pay or other damages arising from the termination of his employment,
above and beyond those specifically provided for herein.

14.3 The Employee undertakes to give to the Corporation a full and satisfactory
written release upon receipt of the payment due to him in accordance with this
Article XIV.

                                   ARTICLE XV
                                  MISCELLANEOUS
                                  -------------

15.1 Headings. The headings in this Agreement are inserted for convenience of
     --------
reference on1y and shall not affect the interpretation hereof.

                                       8

<PAGE>

15.2  Severability. Any Article, Section, Subsection or other subdivision of
      ------------
this Agreement or any other provision of this Agreement which is, or becomes,
illegal, invalid or unenforceable shall be severed herefrom and shall be
ineffective to the extent of such illegality, invalidity or unenforceability and
shall not affect or impair the remaining provisions hereof, which provisions
shall (a) be severed from any illegal, invalid or unenforceable Article,
Section, Subsection or other subdivision of this Agreement or any other
provision of this Agreement; and (b) otherwise remain in full force and effect.

15.3  Amendments. No amendment shall be binding unless expressly provided in an
      ----------
instrument duly executed by the parties.

15.4  Waiver. No waiver, whether by conduct or otherwise, of any of the
      ------
provisions of this Agreement shall be deemed to constitute a waiver of any other
provisions (whether or not similar) nor shall such waiver constitute a
continuing waiver unless otherwise expressly provided in an instrument duly
executed by the parties to be bound thereby.

15.5  Governing Law. This Agreement shall be governed by and interpreted and
      -------------
construed in accordance with the laws of the Province of Quebec and the laws of
Canada applicable therein.

15.6  No Contradiction. The restrictive covenants which are part of this
      ----------------
Agreement, such as the obligation of non-competition which is set forth at
Article X, shall not be deemed to be in contradiction with the restrictive
covenants which are included in the Share Purchase Agreement of even date
herewith, but shall be in addition one to another.

15.7  Language. The parties hereto acknowledge that they have requested and are
      --------
satisfied that this Agreement and all related documents be drawn up in the
English language. Les parties aux presentes reconnaissent avoir requis que la
presente entente et les documents qui y sont relatifs soient rediges en anglais.

                                       9

<PAGE>

     IN WITNESS WHEREOF, this Agreement has been executed by the parties hereto
on the date and at the place first above mentioned.

                                                    AVANTRON TECHNOLOGIES, INC.,

                                             Per: /s/ Raffaele Gerbasi
                                                 -------------------------------
                                                      Raffaele Gerbasi

                                                  /s/ Raffaele Gerbasi
                                                 -------------------------------
                                                      Raffaele Gerbasi

                             [Employment Agreement]

<PAGE>

                         EMPLOYMENT AGREEMENT AMENDMENT
                         ------------------------------

     This Amendment to Employment Agreement is entered by and between Raffaele
Gerbasi, an individual, and Sunrise Telecom Broadband Corp., an unlimited
liability company existing under the laws of Nova Scotia, Canada, as of March
12, 2002. (Sunrise Telecom Broadband Corp. is the successor to Avantron
Technologies, Inc.)

     On January 8, 2001, Sunrise and Mr. Gerbasi entered into an Employment
Agreement. Except as amended hereby, the parties acknowledge and affirm the
Employment Agreement.

     Now, for good and valuable consideration, the receipt and sufficiency of
which the parties hereby acknowledge, the parties amend the Employment Agreement
as follows:

     Paragraph 5.2 is hereby deleted in its entirety and in its stead:

     5.2  For the second reference year following the Closing Date, the Employee
     shall receive a bonus of one million and one hundred and sixty thousand and
     six hundred and twenty nine Canadian dollars (Cdn$1,160,629). Such bonus is
     contingent that the Employee be an employee in good standing of the
     Corporation, unless his employment was terminated by death, by total
     disablement, or by the Corporation for its convenience, on the second
     anniversary of the Closing Date, that there has been no breach of this
     Employment Agreement, and that this Employment Agreement be in full force
     and effect (unless his employment was terminated by death, total
     disablement or by the Corporation for its convenience).

     5.2A For the third reference year following the Closing Date, the Employee
     shall receive a bonus of one million and one hundred and sixty thousand and
     six hundred and twenty nine Canadian dollars (Cdn$1,160,629). Such bonus is
     contingent that the Employee be an employee in good standing of the
     Corporation, unless his employment was terminated by death, by total
     disablement, or by the Corporation for its convenience, on the third
     anniversary of the Closing Date, that there has been no breach of this
     Employment Agreement, and that this Employment Agreement be in full force
     and effect (unless his employment was terminated by death, total
     disablement or by the Corporation for its convenience).

                                           /s/ Raffaele Gerbasi
                                          --------------------------------------
                                          Raffaele Gerbasi

                                          SUNRISE TELECOM BROADBAND CORP.

                                       By: /s/ Raffaele Gerbasi
                                          --------------------------------------
                                          Raffaele Gerbasi
                                          President

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