Document:

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                                                                   EXHIBIT 10.22

                              EMPLOYMENT AGREEMENT

                           DATED AS OF JANUARY 1, 2000

                                 BY AND BETWEEN

PhaseCom Ltd., company number 51-086689-0, a company having an office and place
of business in Har Hotzvim, Jerusalem, Israel (the "Company")

                                       AND

Menashe Shahar, identity number 5036905 of Qiryati Street 16, Ramat Gan, Israel
(the "Employee")

WHEREAS, the Company desires to employ the Employee as its Vice President of
Engineering and Chief Technical Officer, and to avail itself of the Employee's
talents and abilities; and

WHEREAS, the Employee desires to be employed by the Company, subject to the
terms and conditions set forth below.

NOW, THEREFORE, the parties hereby agree as follows:

1.     EMPLOYMENT DUTIES

       1.1.   Employee shall perform the responsibilities of Vice President of
              Engineering and Chief Technical Officer of the Company, and any
              responsibilities incidental thereto.

       1.2.   Employee shall devote his full business time and attention to the
              business of the Company, and shall not become engaged in any other
              occupation whether for compensation or not while employed
              hereunder, without the express written consent of the Company's
              Board of Directors.

       1.3.   Employee's employment with the Company may require travel outside
              Israel, and the Employee agrees to such travel as may be necessary
              in order to fulfill his duties toward the Company.

       1.4.   Employee's position is a "senior managerial position", as defined
              in the Work and Rest Hours Law, 1951, and requires a high level of
              trust. Accordingly, the provisions of said law shall not apply to
              Employee and Employee agrees that

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              he may be required to work beyond the regular working hours of
              the Company, for no additional compensation other than as
              specified in this Agreement.

       1.5.   Employee declares that the fulfillment of the undertakings
              pursuant to this Agreement, his employment by the Company and the
              use of information in his possession and of his abilities, does
              not breach, and will not breach, any other agreement or
              undertaking for the preservation of confidentiality and
              non-competition to which he is a party. Employee agrees and
              undertakes not to perform any act or to omit to perform any act
              which may breach his fiduciary duty to the Company or which may
              place him in a position of conflict of interest with the
              objectives of the Company. In addition, Employee agrees and
              undertakes to inform the Company promptly of any such matter which
              may place him in such a situation of potential conflict of
              interest.

2.     TERM

       This Employment Agreement commences as of January 1, 2000, and shall
       continue for a period of thirty-six (36) months (the "Initial Term"),
       unless sooner terminated in accordance with the terms of Section 9 below.
       Upon the expiration of the Initial Term, this Employment Agreement shall
       automatically renew for successive twelve (12) month periods (each twelve
       month period shall be referred to as an "Extended Term"), unless sooner
       terminated in accordance with the terms of Section 9 below.

3.     COMPENSATION

       3.1.   FIXED SALARY. Employee shall receive a fixed monthly Gross Salary
              of NIS 50,000 (Fifty Thousand New Israeli Shekels) (the "GROSS
              SALARY"), payable on the first business day of each month for the
              immediately preceding month.

       Once every six months, starting July 1, 2000, the Gross Salary shall be
       prospectively adjusted (the "Adjustment") to reflect the increases in the
       Consumer Price Index published by the Israeli General Bureau of
       Statistics (the "CPI") during the six month period preceding each
       Adjustment, based on the last known CPI at the time of each Adjustment.
       For the purpose hereof, the base CPI shall be the CPI for the month of
       January, 2000, published on February 15, 2000. For the avoidance of
       doubt, it is hereby clarified that such linkage shall be in lieu of any
       other linkage or allowances with respect to the Cost of Living.

       3.2.   ANNUAL REVIEW. At the end of each calendar year during the Initial
              Term and any Extended Term the Company and the Employee shall
              conduct good faith negotiations with respect to the Employee's
              Gross Salary, taking into account

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              the nature of the Employee's position and the Company's business,
              economic and financial situation.

       3.3.   BONUS. During the Initial Term and the Extended Term, Employee
              shall participate in each bonus plan adopted by the Board of
              Directors of PhaseCom, Inc., the Company's parent corporation
              ("Parent"). Commencing in 2000, Employee shall be entitled to
              receive an annual bonus equal to (i) fifteen percent (15%) of his
              annual base salary should Parent meet eighty percent (80%) of its
              plan as presented to the Board in January of each year, during the
              term of Employee's employment ("Yearly Plan"); (ii) fifty percent
              (50%) of his annual base salary should Parent meet its Yearly
              Plan; and (iii) ninety percent (90%) of his annual base salary
              should Parent meet one hundred twenty percent (120%) of its Yearly
              Plan, with the bonus prorated if the Yearly Plan is met between
              eighty percent (80%) and one hundred percent (100%); or between
              one hundred percent (100%) and one hundred twenty percent (120%).
              For purposes of this Section, the meeting of the Yearly Plan shall
              be based upon the actual revenues set forth by management and
              Parent's Compensation Committee for each applicable year (each
              compared to the revenues and other items projected in the Yearly
              Plan). Employee shall be entitled to receive an additional annual
              bonus based on his performance and that of the Company each year
              as determined by the Board of Parent, or Parent's Compensation
              Committee. The bonus shall be prorated should Employee's
              employment terminate prior to the full calendar year.

       3.4.   VACATION. Employee shall accrue paid vacation at the rate of
              twenty eight (28) days for each twelve (12) months of employment.
              Employee may not accumulate his vacation days for more than twenty
              four (24) months of employment. Notwithstanding the foregoing, no
              later than December 31, 2000, the Company shall pay Employee the
              pro-rata amount of the Gross Salary with respect to all vacation
              days which were accrued by Employee for more than twenty four (24)
              months as of the date of such payment.

       3.5.   SICK LEAVE. Employee shall be entitled to paid sick leave for up
              to 30 days for every calendar year, which shall be accruable for
              up to 90 days of paid sick leave.

       Employee shall not be entitled to paid sick leave from the Company if
       such payment was made as part of the disability insurance stated in
       Section 3.6 below.

       This sick leave shall not be redeemable, whether in the course of
       Employee's employment with the Company or subsequent to the termination
       thereof, regardless of reason.

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       3.6.   BENEFITS. During the term of Employee's employment, Employee shall
              be entitled to Manager's Insurance (BITUACH MINHALIM) to be
              registered on his name, in an amount equal to 15.83% of the Gross
              Salary, which shall be paid monthly to said Manager's Insurance
              Plan directly by the Company. The insurance shall be allocated as
              follows: (i) 8.33% in respect of severance compensation, (ii) 5%
              in respect of pension and (iii) up to 2.5% in respect of
              disability. An additional 5% of the Gross Salary shall be deducted
              by the Company from the monthly payment of Employee's salary as
              Employee's contribution to said Manager's Insurance. Ownership of
              the Manager's Insurance policy will be transferred to Employee
              upon termination of his employment with the Company.
              Notwithstanding the foregoing or anything in this agreement to the
              contrary, in the event that the employment relationship between
              Employee and the Company is terminated (a) by the Company for
              Cause (as defined in Section 9.2 below), or (b) by the Employee,
              other than in accordance with Section 9.1 below, Employee shall
              immediately transfer and return to the Company the title and any
              and all amounts accumulated in the Manager's Insurance on account
              of severance pay.

       3.7.   EDUCATION FUND. The Company shall contribute to a Continuing
              Education Fund (KEREN HISHTALMUT), to be chosen by the Company for
              the benefit of Employee, in an amount equal to 7.5% of his Gross
              Salary per month, subject to Employee's contribution of an
              additional 2.5% of his Gross Salary per month. All tax obligations
              related to the Education Fund shall be borne by the Employee.

       3.8.   RECREATION FUNDS. The Company shall provide and pay Employee
              Recreation Funds (DMEI HAVRA'AH) at the rate required by law and
              regulations.

       3.9.   AUTOMOBILE. The Company shall provide the Employee with an
              automobile in such model and size as shall be determined by the
              Board of Directors of the Company. The Company shall pay all
              actual maintenance, gas and insurance expenses of the automobile.
              All tax obligations related to the automobile shall be borne by
              the Company.

       3.10.  TELEPHONE. The Company shall bear all expenses incurred in
              connection with the maintenance of a dedicated telephone line in
              the Employee's home, solely for the purpose of enabling the
              Employee to conduct business affairs from his home. All tax
              obligations related to the maintenance of such telephone line
              shall be borne by the Company.

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       3.11.  MEDICAL EXAMINATION. The Employee shall be entitled to one medical
              examination per each calendar year at the Company's cost and
              expense, at a medical institution chosen in advance in
              coordination with the Company.

4.     EXPENSES

       The Company shall reimburse Employee for his normal and reasonable
       expenses incurred for travel, entertainment and similar items in
       promoting and carrying out the business of the Company in accordance with
       the Company's general policy, in effect from time to time. As a condition
       of reimbursement, Employee agrees to provide the Company with copies of
       all available invoices and receipts, and otherwise account to the Company
       in sufficient detail to allow the Company to claim an income tax
       deduction for such paid item, if item is deductible. Reimbursement shall
       be made on a monthly, or more frequent, basis.

5.     RESERVE DUTY

       Immediately upon receipt of a notice of reserve duty, Employee shall
       report such notice to the Company's Board of Directors. Upon Employee's
       return from reserve duty, Employee shall deliver to the Company
       appropriate confirmation of reserve duty served from his military unit,
       against which the Company shall pay Employee his regular compensation
       package with respect to the period served.

6.     COVENANT NOT TO COMPETE

       Employee agrees that he is and shall be in a position of special trust
       and confidence and will have access to confidential and proprietary
       information about the Company's business and plans. Employee agrees that
       he will not directly or indirectly, either as an employee, employer,
       consultant, agent, principal, partner, stockholder, corporate officer,
       director, or in any similar individual or representative capacity, engage
       or participate in any business competitive with the Company's business or
       with the Business of any parent of subsidiary of the Company, including
       projects under consideration by the Company at the time of termination,
       during the term of his employment for a period of twelve (12) months
       after the termination of his employment, regardless of the reason for
       such termination and regardless of whether such termination was initiated
       by the Employee or by the Company.

7.     CONFIDENTIALITY AND TRADE SECRETS

       7.1.   KNOW-HOW AND INTELLECTUAL PROPERTY. It is understood that the
              Company has developed or acquired and will continue to develop or
              acquire certain products, technology, unique or special methods,
              manufacturing and assembly processes and techniques, trade
              secrets, written marketing plans and

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              customer arrangements, and other proprietary rights and
              confidential information which are not in the public domain
              (collectively referred to as the "COMPANY PROPERTY"). It is
              expected that the Employee will gain knowledge of and utilize
              the Company Property during the course and scope of his
              employment with the Company, and will be in a position of trust
              with respect to the Company Property. All inventions and
              developments made by the Employee for the Company in the
              context of his employment with the Company, and all
              intellectual property rights contained therein, shall be deemed
              Company Property. Employee agrees that all rights he has to any
              technology, patents, copyrights, ideas in whatever form, and
              any other intellectual property rights, which relate to the
              Company Property are unconditionally assigned to and owned,
              free of any third party rights or encumbrances, by the Company,
              and the Employee agrees to cooperate with the Company and to
              provide to it all details necessary to carry out any
              registration or act, to sign any power of attorney or document
              and to carry out any act to enable the Company, and only the
              Company, to make use of all the Company Property, to duly
              register the same, whether in Israel or abroad, should the
              Company desire to do so, and/or to protect the same in any
              other manner as the Company shall see fit. The Employee's
              covenant to assist the Company in the acquisition and
              enforcement of intellectual property rights and protections in
              connection with the Company Property shall continue to apply
              after he has ceased to be employed by the Company.

       7.2.   COMPANY PROPERTY. It is hereby stipulated and agreed that the
              Company Property shall remain the sole property of the Company. It
              is further stipulated and agreed by the parties, as a material
              inducement for the Company having entered into this Agreement and
              remaining a party hereto (subject to any early termination hereof
              by the Company), that Employee shall be bound by the Company's
              standard Employee Non-Disclosure Agreement.

       7.3.   EFFECT OF TERMINATION. In the event that Employee's employment is
              terminated, for whatever reason, Employee agrees not to copy, make
              known, disclose or use, any of the Company Property, and the
              Employee shall continue to observe the provisions of the Employee
              Non-Disclosure Agreement, which shall survive such termination.
              Without derogating from the Company's rights under the law of
              torts, Employee further agrees not to endeavor or attempt in any
              way to interfere with or induce a breach of any relationship that
              the Company may have with any employee, customer, contractor,
              supplier, representative, or distributor for a period of eighteen
              (18) months from the date of any termination of Employee's
              employment with the

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              Company for any reason whatsoever. Employee agrees, upon
              termination of employment, to deliver to the Company all
              confidential papers, documents, records, lists and notes
              (whether prepared by Employee or others), in any media
              whatsoever, comprising or containing the Company Property,
              without retaining any copies thereof, and any other property of
              the Company.

       7.4.   CONFIDENTIALITY. Employee will sign the Company's standard form of
              Employee Non-Disclosure Agreement and Non-competition Agreement
              (collectively, the "Confidentiality Agreements").

       7.5.   MATERIAL BREACH. It is hereby agreed that a breach of Sections 6
              or 7 or the Confidentiality Agreements shall be considered as a
              material breach of this Agreement.

8.     CORPORATE OPPORTUNITIES

       In the event that during the Employment Term, any business opportunity
       related to the Company's business shall come to Employee's knowledge,
       Employee shall promptly notify the Company's Board of Directors of such
       opportunity. Employee shall not appropriate for himself or for any other
       person other than the Company, any such opportunity, except with the
       express written consent of the Board of Directors, in advance. Employee's
       duty to notify the Company and to refrain from appropriating all such
       opportunities shall neither be limited by, nor shall such duty limit, the
       application of the general law of Israel relating to the fiduciary duties
       of an agent or employee.

9.     TERMINATION OF EMPLOYMENT

       9.1.   GENERAL. This Agreement may be terminated by either party, at any
              time, without cause (during the Initial Term or during the
              Extended Term), by giving the other party three (3) months'
              advance written notice of its election to terminate this
              Agreement.

       9.2.   TERMINATION FOR CAUSE. Notwithstanding Section 2 and Section 9.1
              above, the Company may immediately terminate Employee's employment
              at any time for Cause. Termination for Cause shall be effective
              from the receipt of written notice thereof to Employee. "Cause"
              means: (i) material neglect of his duties or a material breach or
              violation of any of the provisions of this Agreement; (ii) fraud,
              embezzlement, defalcation or conviction of any felonious offense;
              or (iii) intentionally imparting confidential information relating
              to the Company or Parent or their business to a third party, other
              than in the course of carrying out Employee's duties hereunder.
              The Company's exercise of its rights to

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              terminate with Cause shall be without prejudice to any other
              remedy it may be entitled at law or in equity, or nder this
              Agreement.

       9.3.   TERMINATION UPON DEATH OR DISABILITY. This Agreement shall
              automatically terminate upon Employee's death. In addition, if any
              disability or incapacity of Employee to perform his duties as a
              result of any injury, sickness, or physical, mental, or emotional
              condition, continues for a period of thirty (30) business days
              (excluding any accrued vacation) out of any one hundred and twenty
              (120) calendar day period, the Company may terminate Employee's
              employment upon written notice. Payment of salary to Employee
              during any sick leave shall only be to the extent that Employee
              has accrued sick leave or vacation days.

       9.4.   PRIOR NOTICE PAYMENT. If this Agreement is terminated by the
              Company without cause pursuant to Section 9.1 (above), or if after
              the initial three (3) year term it is not renewed, the Company
              shall pay Employee a prior notice fee equal to the greater of (a)
              the full amount of the compensation that he could have expected
              under this Agreement, as and when payable under this Agreement,
              without deduction except for tax withholding amounts, through the
              end of the term; or (b) six (6) months of his then-current salary
              without bonus, subject to tax withholding amounts. If this
              Agreement is terminated by the Company for cause, pursuant to
              Section 9.2 (above), the Company shall pay to Employee a prior
              notice fee equal to three (3) months of his then-current salary
              without bonus, subject to tax withholding amounts, in exchange for
              a release as to any and all claims Employee may have against the
              Company. There shall be no prior notice payment in the event that
              this Agreement is terminated voluntarily by Employee. During the
              time period that Employee is receiving the prior notice pay, he
              shall remain as a non-employee consultant of the Company in a
              non-policy making role.

10.    MISCELLANEOUS

       10.1.  NO CONFLICTING AGREEMENTS. Employee declares that he is not bound
              by any agreement, understanding or arrangement according to which
              the execution of and compliance with this Agreement may constitute
              a breach or default.

       10.2.  HEADINGS. The headings of the Sections and subsections of this
              Agreement are for convenience of reference only and shall not
              affect the meaning or interpretation of the contents of this
              Agreement.

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       10.3.  SEVERABILITY. The invalidity or unenforceability of any particular
              provision of this Agreement shall not affect or limit the validity
              or enforceability of the remaining provisions of this Agreement.

       10.4.  COUNTERPARTS. This Agreement may be executed in any number of
              counterparts, each of which shall be an original, but all of which
              together shall constitute one instrument.

       10.5.  ENTIRE AGREEMENT. This Agreement constitutes the entire agreement
              and understanding between the parties with respect to the subject
              matters herein, and supersedes and replaces any prior agreements
              and understandings, whether oral or written between them with
              respect to such matters, including but not limited to that certain
              Employment Agreement dated May 17, 1994, by and between the
              Company and Employee. The provisions of this Agreement may be
              waived, altered, amended or repealed in whole or in part only upon
              the written consent of both parties to this Agreement.

       10.6.  NO IMPLIED WAIVERS. The failure of either party at any time to
              require performance by the other party of any provision hereof
              shall not affect in any way the right to require such performance
              at any time thereafter, nor shall the waiver by either party of a
              breach of any provision hereof be taken or held to be a waiver of
              any subsequent breach of the same provision or any other
              provision.

       10.7.  PERSONAL SERVICES. It is understood that the services to be
              performed by the Employee hereunder are personal in nature and the
              obligations to perform such services and the conditions and
              covenants of this Agreement cannot be assigned by Employee.
              Subject to the foregoing and except as otherwise provided herein,
              this Agreement shall inure to the benefit of and bind the
              successors and assigns of the Company.

       10.8.  APPLICABLE LAW. This Agreement shall be governed by and construed
              in accordance with the laws of the State of Israel. In the event
              of any controversy or claim arising out of or relating to this
              Agreement, or breach thereof, the parties may apply solely to the
              court having jurisdiction in Tel Aviv - Jaffa, Israel.

       10.9.  NOTICES. All notices, requests, demands, instructions or other
              communications required or permitted to be given under this
              Agreement or related to it shall be in writing and shall be deemed
              to have been duly given upon delivery, if delivered personally, or
              if given by prepaid telegram, or mailed first-class postage
              prepaid, registered or certified mail, return receipt requested,
              shall be

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              deemed to have been given two (2) days after such delivery, if
              addressed to the other party at the addresses as set forth on
              the signature page below. Either party hereto may change the
              address to which such communications are to be directed by
              giving written notice to the other party hereto of such change
              in the manner above provided.

       10.10. MERGER, TRANSFER OF ASSETS, OR DISSOLUTION OF THE COMPANY. This
              Agreement shall not be terminated by any dissolution of the
              Company resulting from either (i) merger or consolidation in which
              the Company is not the consolidated or surviving Company, or (ii)
              a transfer of all or substantially all of the assets of the
              Company. In each of such events, the rights, benefits, and
              obligations herein shall be assigned to the surviving or resulting
              Company, or to the transferee of the assets, as applicable.

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

PHASECOM LTD.                                     /s/ Menashe Shahar
                                               --------------------------
                                               MENASHE SHAHAR

BY:    /s/ Tal Mundlak-Avnon
   -----------------------------------

NAME:       Tal Mundlak-Avnon
     ---------------------------------

TITLE:  Vice President, Finance and Administration
        ------------------------------------------

                                       10<PAGE>

                                                                   EXHIBIT 10.23

                                   VYYO INC.
                               AMENDMENT NO. 2 TO
                             REGISTRATION RIGHTS AND
                                LOCK-UP AGREEMENT

         THIS AMENDMENT NO. 2 TO REGISTRATION RIGHTS AND LOCK-UP AGREEMENT (this
"Amendment") is entered into as of this 4th day of February, 2000, by and among
Vyyo Inc., formerly known as PhaseCom, Inc. (the "Company"), and the holders of
shares of the Company's Common Stock, or securities convertible into or
exchangeable or exercisable for Common Stock, that are identified on the
signature page to this Amendment (the "Holders").

                                   WITNESSETH:

         WHEREAS, the Company and the Holders are parties to that certain
Registration Rights and Lock-Up Agreement, dated as of April 21, 1996, as
amended on August 13, 1999 (the "Registration Rights Agreement");

         WHEREAS, the Company has filed a Registration Statement on Form S-1
(the "Registration Statement") with the Securities and Exchange Commission in
connection with a proposed underwritten initial public offering (the "Offering")
of shares of its common stock, par value $0.0001 per share ("Common Stock");

         WHEREAS, each Holder recognizes that the Offering will be of benefit to
such Holder and will benefit the Company by, among other things, raising
additional capital for its operations;

         WHEREAS, in connection with the Offering, the parties hereto desire to
amend the Registration Rights Agreement as set forth herein;

         WHEREAS, pursuant to Section 3(a) of the Registration Rights Agreement,
the Registration Rights Agreement may be amended upon the written consent of
Holders holding a majority of the then Registrable Securities; and

         WHEREAS, the undersigned Holders hold at least a majority of the
currently outstanding Registrable Securities.

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         NOW, THEREFORE, for and in consideration of the foregoing and the
mutual agreements and covenants contained in this Amendment, the parties hereto
agree as follows:

         1. DEFINITIONS. Except as otherwise provided herein, the definitions
set forth in Article 1 of the Registration Rights Agreement shall have the same
meaning in this Amendment as if fully set forth herein.

         2. AMENDMENT TO SECTION 2(A)(II)(2). Section 2(a)(ii)(2) of the
Registration Rights Agreement shall be deleted and in its place the following
new Section 2(a)(ii)(2) shall be inserted:

                  (2) Prior to the earlier of (A) December 1, 2000, or (B)
         eighteen (18) months after the effective date of PhaseCom Del's first
         registered underwritten offering to the general public of its
         securities for its own account;

         3. AMENDMENT TO SECTION 2(B)(I). Section 2(b)(i) of the Registration
Rights Agreement shall be deleted and in its place the following new Section
2(b)(i) shall be inserted:

                  (i) PHASECOM DEL'S OBLIGATION TO REGISTER. If PhaseCom Del at
         any time proposes to initiate a registration of its securities under
         the Securities Act on its own or upon request of Holders other than
         Initiating Holders and thereafter registers any of its securities under
         the Securities Act (other than a registration effected (A) solely to
         implement an employee benefit plan, a transaction to which Rule 145 of
         the Securities Act is applicable or any other form or type of
         registration in which Registrable Securities cannot be included
         pursuant to Commission rule or practice or (B) in connection with
         PhaseCom Del's first registered underwritten offering to the general
         public of its securities for its own account), it will give written
         notice to all Holders of the outstanding Registrable Securities of its
         intention to do so at least twenty (20) days prior to the filing of any
         such registration (stating the intended method and terms of disposition
         of such securities, including a list of the jurisdictions in which
         PhaseCom Del intends to qualify such securities). Upon the written
         request from any Holder within fifteen (15) days after receipt of
         PhaseCom Del's notice to the Holders, subject to the limits contained
         in this Section, PhaseCom Del shall afford each such Holder an
         opportunity to include in such registration all or any part of the
         Registrable Securities then held by such Holder, all to the extent
         requisite to permit such sale or other disposition by such Holders of
         the Registrable Securities so registered and to the extent permissible
         under applicable securities laws; provided, however, that PhaseCom Del
         shall be required to use such best efforts to register said Registrable
         Securities under this Section (b) no more than two (2) times.

                                       2
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         4. FULL FORCE AND EFFECT. The parties hereto hereby modify and amend
the Registration Rights Agreement in accordance with the provisions of this
Amendment and except as hereby and herein modified and amended, the
Registration Rights Agreement shall remain in full force and effect and
binding upon the parties.

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

                                VYYO INC. (formerly PhaseCom, Inc.)

                                By:   /s/ Davidi Gilo
                                     -------------------------------------------
                                Name:    Davidi Gilo
                                Title:   Chairman of the Board and CEO

                                PHASECOM INVESTOR GROUP LIMITED PARTNERSHIP

                                By:     /s/ Davidi Gilo
                                   ---------------------------------------------
                                Name:    Davidi Gilo
                                Title:   President of Harmony Management, Inc.,
                                         General Partner

                                PHASECOM INVESTOR GROUP LIMITED
                                PARTNERSHIP NO. 2

                                By:      /s/ Davidi Gilo
                                   ---------------------------------------------
                                Name:    Davidi Gilo
                                Title:   President of Harmony Management, Inc.,
                                         General Partner

                                       3
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                                DAVIDI and SHAMAYA GILO TRUST U/T/D 1/18/91

                                By:      /s/ Davidi Gilo
                                   ---------------------------------------------
                                Name:    Davidi Gilo, Trustee

                                GALRAN PROPERTIES (1993) LTD.

                                By:      /s/ Boaz Adini
                                   ---------------------------------------------
                                Name:    Boaz Adini
                                Title:   Chairman

                                EICHOT CAPITAL MARKETS AND
                                INVESTMENTS (1993) LTD.

                                By:      /s/ Zvi Biran and Koti Gavish
                                   ---------------------------------------------
                                Name:   Zvi Biran and Koti Gavish
                                Title:   General Managers

                                TOM HOLDINGS AND PROPERTIES (1993) LTD.

                                By:      /s/ Zvi Biran
                                   ---------------------------------------------
                                Name:   Zvi Biran
                                Title:   Chairman

                                Y. ATAI INVESTMENTS (1993) LTD.

                                By:      /s/ Yahuda Atai
                                   ---------------------------------------------
                                Name:    Yahuda Atai
                                Title:   Director

                                       4
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                                ADC TELECOMMUNICATIONS, INC.

                                By:      /s/ John Griffin
                                   ---------------------------------------------
                                Name:    John Griffin
                                Title:   Vice President

                                PEZZOLA - FOSTER TRUST U/T/D 4/3/87

                                By:      /s/ Stephen P. Pezzola
                                   ---------------------------------------------
                                Name:    Stephen P. Pezzola, Trustee

                                JOSEPH GORODNICK

                                ------------------------------------------------

                                ITHZAK and ESTHER HOFFI

                                         /s/ Ithzak Hoffi
                                ------------------------------------------------

                                         /s/ Esther Hoffi
                                ------------------------------------------------

                                CHIM-NIR LTD.

                                By:  /s/ Ilan Sela  and /s/ Arie Etziony
                                   ---------------------------------------------
                                Name:    Ilan Sela and Arie Etziony
                                Title:   Director / Director

                                       5
<PAGE>

                                HAREL-HAMISHMAR INVESTMENTS LTD.

                                By:
                                   ---------------------------------------------
                                Name:
                                Title:

                                AL-BEN LTD.

                                By:  /s/ Josef Paluch
                                   ---------------------------------------------
                                Name:     Josef Paluch
                                Title:    CEO

                                ILAN SELAH

                                     /s/ Ilan Selah
                                ------------------------------------------------

                                ARYEH and YUVAL EZYONI

                                     /s/ Aryeh Ezyoni
                                ------------------------------------------------

                                     /s/ Yuval Ezyoni
                                ------------------------------------------------

                                MORDECHAI GAZIT

                                     /s/ M. Gazit
                                ------------------------------------------------

                                SHAUL BERGER

                                ------------------------------------------------

                                       6
<PAGE>

                                REUVEN AND NAOMI ASHKENAZY

                                     /s/ Reuven Ashkenazi
                                ------------------------------------------------

                                ------------------------------------------------

                                AVRAHAM FISCHER

                                ------------------------------------------------

                                MIRI LENT

                                ------------------------------------------------

                                I. FISCHER & CO., as Trustee U/A dtd
                                11/10/97
                                FBO:     The parties identified on Schedule A
                                         hereto

                                By:
                                     -------------------------------------------
                                Name:
                                Title:

                                VICTOR HALPERT

                                ------------------------------------------------

                                YOTAM FINANCING TECHNOLOGICAL VENTURES LTD.

                                By:    /s/ Arie Hinkis
                                   ---------------------------------------------
                                Name:  Arie Hinkis
                                Title:  President

                                       7
<PAGE>

                                SCHLOMO RACHIV

                                ------------------------------------------------

                                       8
<PAGE>

                                   SCHEDULE A

I. Fischer & Co., as Trustee U/A dtd 11/10/97

FBO:  Y. Azai Investments Ltd.
FBO:  Galran Properties (1993) Ltd.
FBO:  Tom Holdings and Properties (1993) Ltd.
FBO:  Eichot Capital Markets and Investments (1993) Ltd.
FBO:  Arie Zimmerman
FBO:  Ithzak and Esther Hoffi
FBO:  Chim-Nir Ltd.
FBO:  MMD Technology Israel Ltd.
FBO:  Reger Investment Company Ltd.
FBO:  Cham Foods (Israel) Ltd.
FBO:  Harel-Hamishmar Investments Ltd.
FBO:  Reuven and NaomiAshkenazy
FBO:  Al-Ben Ltd.
FBO:  Miri Lent
FBO:  Ilan Selmo
FBO:  Yotam Financing and Technological Ventures Ltd.
FBO:  Hananyah and Tamar Amishav
FBO:  Phelix Lachman
FOB:  Mordechai Gazit
FOB:  Michael Barzily, or Successor, as Trustee on behalf of Meir Leiberman
FOB:  Michael Barzily, or Successor, as Trustee on behalf of Dudi Gidron
FOB:  Michael Barzily, or Successor, as Trustee on behalf of Menashe Shahar

                                       9

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