Document:

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                                                                    Exhibit 10.9

                           Software License Agreement

                                 by and between

                                 RADVISION LTD.
                  24 Raoul Wallenberg Street, Tel Aviv, Israel

                           - henceforth "RADVISION" -

                                       and

                           SIEMENS AKTIENGESELLSCHAFT
                    Hofmannstrasse 51, 81359 Munchen, Germany

                            - henceforth "SIEMENS" -

                       - RADVISION and SIEMENS henceforth
       individually referred to as "Party" and jointly as the "Parties" -

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TABLE OF CONTENTS

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<S>                                                                                               <C>
1    DEFINITIONS...................................................................................4

2    RIGHTS OF SIEMENS.............................................................................7

3    TRADENAMES, TRADEMARK NOTICES.................................................................8

4    INTELLECTUAL PROPERTY RIGHTS..................................................................8

5    DELIVERABLES..................................................................................9

6    ACCEPTANCE...................................................................................10

7    WARRANTY.....................................................................................11

8    PAYMENT, RECORD KEEPING, REPORTS, AUDIT......................................................13

9    INDEMNIFICATION..............................................................................15

10   PRODUCT LIABILITY AND FORCE MAJEURE..........................................................16

11   MAINTENANCE..................................................................................17

12   TECHNICAL SUPPORT; TRAINING..................................................................19

13   CONFIDENTIALITY, MEDIA RELEASES..............................................................20

14   EXPORT CONTROL...............................................................................20

15   NOTICES......................................................................................21

16   ARBITRATION, GOVERNING LAW...................................................................21

17   TERM AND TERMINATION.........................................................................22

18   ISO STANDARDS................................................................................24

19   MISCELLANEOUS................................................................................24

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ANNEXES:

Annex 1:   Specifications and criteria of the SOFTWARE PRODUCTS
Annex 2:   SYSTEM DOCUMENTATION
Annex 3:   [intentionally deleted]
Annex 4:   REFERENCE ENVIRONMENT
Annex 5:   License and maintenance fees and technical support and training rates
Annex 6:   Maintenance Provisions
Annex 7:   Export Control Data
Annex 8:   List of Sub-Contractors

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PREAMBLE

This Agreement is made and entered into as of February 23, 2000 by and between
RADVision Ltd. ("RADVISION"), with its offices at 24 Raoul Wallenberg Street,
Tel Aviv, Israel and Siemens Aktiengesellschaft ("SIEMENS") with its offices at
Hofmannstr. 51, D-81359 Muenchen, Germany.

WHEREAS, RADVISION holds any and all rights, title and interest in and to the
SOFTWARE PRODUCTS (as hereinafter defined), especially the right to use, copy,
market, distribute, sublicense, modify and/or otherwise dispose of the SOFTWARE
PRODUCTS; the same applying mutatis mutandis to SYSTEM DOCUMENTATION (as
hereinafter defined);

WHEREAS, SIEMENS intends, under the terms and conditions specified herein, to
combine the SOFTWARE PRODUCTS unmodified and/or modified and/or portions thereof
- with equipment and/or other computer software programs distributed and
marketed by SIEMENS, its RELATED COMPANIES and/or its DISTRIBUTORS( both as
hereinafter defined). It is understood by both Parties that the SOFTWARE
PRODUCTS may be sold and/or licensed only as EMBEDDED PRODUCTS ( as hereinafter
defined).

WHEREAS, SIEMENS is interested in acquiring license rights for the SOFTWARE
PRODUCTS, as set forth in this AGREEMENT;

WHEREAS, RADVISION is willing to grant SIEMENS such license rights on the terms
and conditions set out in this AGREEMENT;

NOW, THEREFORE, RADVISION and SIEMENS, in consideration of the premises and
covenants as stated herein, hereby agree as follows:

1      DEFINITIONS

       For the purposes of this AGREEMENT, the definitions set forth in this
       Clause shall apply to the respective capitalized terms:

1.1    "SOFTWARE PRODUCTS" shall mean the computer software programs in SOURCE
       CODE and OBJECT CODE form, as described in Annex 1, including
       MODIFICATIONS, UPGRADES, UPDATES and BUG FIXES, originating from
       RADVISION.

1.2    "EMBEDDED PRODUCT" shall mean a SOFTWARE PRODUCT either in modified or
       unmodified form physically integrated into hardware and/or software
       developed, manufactured and/or marketed/distributed by SIEMENS, its
       RELATED COMPANIES and/or its DISTRIBUTORS.

1.3    "NEW SOFTWARE PRODUCT" shall mean a computer software program, the
       functionality of which is comparable to the functionality of the most
       recent UPGRADE of the respective SOFTWARE PRODUCT but whose functionality
       as generated by the SOURCE CODE differs from the previous UPGRADE of the
       respective SOFTWARE PRODUCT by more than 50 per cent. Translations shall
       not be deemed to constitute NEW SOFTWARE PRODUCT. Each NEW SOFTWARE
       PRODUCT shall - upon written request of SIEMENS - be incorporated into
       this AGREEMENT by written amendments, whereupon the Parties shall agree
       in good faith on reasonable charges for such NEW SOFTWARE PRODUCT.

1.4    "SOURCE CODE" shall mean a copy of the SOFTWARE PRODUCTS written in
       higher-level programming languages in a form convenient for reading and
       review by a trained individual, such as a printed or written listing of
       programs, containing specific algorithms, instructions, plans,

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       routines and the like, for controlling the operation of a computer
       workstation and/or a central processing unit, but which is not in a form
       that it would be suitable for execution directly on computer hardware.
       SOURCE CODE may be translated into OBJECT CODE for operation on computer
       equipment through the process of compiling, assembling or interpreting.

1.5    "OBJECT CODE" shall mean the machine-readable form of the SOFTWARE
       PRODUCTS resulting from the translation or processing of SOURCE CODE by
       computer equipment into machine language or intermediate code, and which
       is in that form of computer software programs which is not convenient to
       human understanding of the program logic, but which is appropriate for
       execution or interpretation by computer.

1.6    "SYSTEM DOCUMENTATION" shall mean the SOFTWARE PRODUCTS' specifications
       necessary for the technical, programming, maintenance and support manuals
       including program listings as defined in Annex 2. RADVISION shall deliver
       and for the term of this AGREEMENT shall continue to provide the most
       recent version of SYSTEM DOCUMENTATION.

1.7    "REFERENCE ENVIRONMENT" shall mean communication technology and
       information technology systems, whether hardware or software, as defined
       in Annex 4, on which the SOFTWARE PRODUCTS shall fully operate, and their
       future successor products, versions and releases.

1.8    "DISTRIBUTOR" shall mean any third party which has been granted the right
       by SIEMENS or any of its RELATED COMPANIES to distribute the EMBEDDED
       PRODUCT, subject to the terms and conditions herein.

1.9    "END-USER" shall mean a customer of SIEMENS or of a RELATED COMPANY or a
       DISTRIBUTOR, by whom EMBEDDED PRODUCTS are used in the regular course of
       such customers' business and not for resale.

1.10   "RELATED COMPANIES" shall mean any company directly or indirectly owned
       or controlled by SIEMENS. Ownership or control shall exist through the
       direct or indirect ownership of fifty (50) % or more of the nominal value
       of the issued equity share capital or other voting ownership or equity
       interest or of 50 % or more of the participation giving entitlement to
       vote at the election of directors or persons performing similar
       functions, or the right by any other means to elect or appoint directors
       or persons performing similar functions. In countries where equal or
       majority share holding or control by SIEMENS is legally impossible
       minority shareholding shall be sufficient, provided SIEMENS holds the
       maximum share holding as possible at such country, and for the purposes
       of this AGREEMENT be deemed to constitute RELATED COMPANIES.

1.11   "AGREEMENT" shall mean the present Software License Agreement, all
       attached annexes and documents referenced and all amendments hereto, if
       any, agreed by the Parties at a future date.

1.12   "EFFECTIVE DATE" shall mean the last date of signing of this AGREEMENT by
       any of the Parties.

1.13   "IP RIGHTS" shall mean any and all intellectual and industrial property
       rights, including copyrights, patents, patent applications and
       trademarks, and other proprietary rights such as trade secrets and
       know-how contained in SOFTWARE PRODUCTS and/or SYSTEM DOCUMENTATION.

1.14   "MODIFICATION" shall mean any change, modification, enhancement,
       addition, correction done by or on behalf of RADVISION (but not any
       translation in another language other than English) to or of the SOFTWARE
       PRODUCTS, or any derivative work created by or on behalf of RADVISION
       based on the SOFTWARE PRODUCT.

1.15   "UPDATES" - shall mean an update of any SOFTWARE PRODUCT made available
       by RADVISION to its existing customers of the SOFTWARE PRODUCT that
       contain BUG FIXES

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       and/or minor enhancements or improvements, but do not contain significant
       new features, according to RADVISION's reasonable discretion. Each
       function or feature which operated properly in the immediately preceding
       SOFTWARE PRODUCT release must operate properly and consistently in any
       subsequent UPDATE, except when explicitly approved otherwise in writing
       by SIEMENS with respect to a specific UPDATE.

1.16   "UPGRADE" - shall mean an upgrade of any SOFTWARE PRODUCT made available
       by RADVISION to its existing customers of the SOFTWARE PRODUCT that
       contain major enhancements and new features according to RADVISION's
       reasonable discretion.

1.17   "BUG FIXES" - shall mean a fix of an error in any SOFTWARE PRODUCT and /
       or the SYSTEM DOCUMENTATION. BUG FIXES shall apply to all deliverables
       from RADVISION such as SOURCE CODE and/or OBJECT CODE and SYSTEM
       DOCUMENTATION.

1.18   "CLIENT APPLICATION" shall mean end station applications whose
       functionality makes use of the H.323 stack. In contrast to SERVER
       APPLICATIONS, CLIENT APPLICATIONS do not provide a centralized service.

1.19   "SERVER APPLICATION" shall mean an application providing a centralized
       service that is based on the H.323 stack and terminate the voice, video
       and/or data stream. Examples for such services are Messaging Services,
       Telephony Feature Services, Proxy Services for powered down clients, ACD,
       etc.

1.20   "NETWORK APPLICATION" shall mean applications using the H.323 stack and
       that do not terminate the voice, video, and/or data streams, but forward
       them to another entity. Examples for NETWORK APPLICATIONS are H.323
       Gateways, Firewalls with H.323 stack or call control on UNIX or NT
       Servers.

1.21   "H.323 STANDARD" or "H.323" shall mean the issued recommendation of the
       International Telecommunications Union ("ITU"), and any revisions,
       updates or enhancements to such recommendation duly approved by the ITU
       from time to time. Such standard generally relates to transmission of
       audio and visual data over packet networks such as intranets and the
       internet.

1.22   "CONFIDENTIAL INFORMATION" shall mean any information indicated as
       confidential at the time of disclosure (including but not limited to all
       or any part of written and/or oral and/or computer information disclosed
       by RADVISION to SIEMENS relating to RADVISION's business, past, present
       and future, financial information, and commercial information, as well as
       technical, technological and other proprietary information, including but
       not limited to the following: computer programs in any form - object code
       and source code, documentation, installation programs, software code,
       actual products, prototypes, samples, designs, schematics,
       configurations, specifications, techniques, drawings, kits, concepts,
       ideas and all other information, written or oral, relating to the
       SOFTWARE PRODUCT.) Confidential Information includes as well corrections,
       updates, new releases and new versions of the above.

       Oral disclosures shall be deemed confidential only if in addition to the
       indication summarized in writing by the disclosing Party within 30 days.
       Without prejudice to any other information and for the purposes of this
       AGREEMENT, SOURCE CODE, SYSTEM DOCUMENTATION and license accounts shall
       always be considered "Confidential".

1.23   COMPETITIVE PRODUCTS shall mean products that support substantially the
       same functionality as the SOFTWARE PRODUCTS.

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2      RIGHTS OF SIEMENS

2.1    RADVISION hereby grants to SIEMENS solely the following world-wide,
       non-exclusive, non-transferable, royalty-bearing licenses, which are
       perpetual and irrevocable subject to the terms and conditions of this
       AGREEMENT:

(i)    a license to use, copy and modify and have used, copied and modified the
       SOFTWARE PRODUCTS for the sole purpose of developing, creating and
       maintaining EMBEDDED PRODUCTS .

(ii)   a license to copy or have copied the EMBEDDED PRODUCTS to the extent
       necessary to fully utilize the rights granted herein.

(iii)  a license to distribute the EMBEDDED PRODUCTS only in OBJECT CODE form
       world-wide and sub-license (i) the right to use the EMBEDDED PRODUCTS in
       OBJECT CODE form and (ii) the right to create limited copies of the
       EMBEDDED PRODUCTS for archival purposes, both to END-USERS for the
       purpose of the END-USER's utilization of hardware and/or software
       developed, manufactured and/or marketed/distributed by SIEMENS, its
       RELATED COMPANIES and/or its DISTRIBUTORS.

(iv)   a license to sublicense to RELATED COMPANIES and DISTRIBUTORS (a) the
       rights as stated in Clause 2.1 (iii) (b) the right to copy the EMBEDDED
       PRODUCT only in OBJECT CODE form to the extent necessary to fully utilize
       their rights granted to them by SIEMENS according to this AGREEMENT, and
       (c) the right to sublicense the right to create limited copies of the
       EMBEDDED PRODUCT for archival purposes only to the END-USER.

       In no event shall SIEMENS have the right to market or sublicense the
       SOFTWARE PRODUCT, whether with modifications or without modifications, or
       the EMBEDDED PRODUCT in SOURCE CODE form whatsoever.

2.2    On request of RELATED COMPANIES, RADVISION shall enter into a separate
       written license agreement with those RELATED COMPANIES in order to grant
       them the same rights SIEMENS has under Clause 2.1. Such agreement shall
       contain provisions substantially similar to this AGREEMENT except for the
       lump sum, the royalties and the maintenance fees which may differ from
       those set forth herein. Subject to RADVISION's awareness that a company
       is a RELATED COMPANY, RADVISION will immediately inform SIEMENS in
       writing if RADVISION receives such a request of a RELATED COMPANY. In
       case of the RELATED COMPANIES Infineon Technologies AG, SBS GmbH & Co
       OHG, the agreement shall provide only royalties and maintenance fees, but
       no lump sum additional to the sum paid by SIEMENS under this AGREEMENT.

2.3    On request of a Minority Company, as defined below, RADVISION shall enter
       into a separate written license agreement as described in paragraph 2.2
       with such companies provided that the business interests of RADVISION are
       not adversely affected by such an agreement. "Minority Company" shall
       mean any company directly or indirectly owned or controlled by SIEMENS by
       a percentage of 40 to less than 50 % through the direct or indirect
       ownership of 40 % to less than 50 % of the nominal value of the issued
       equity share capital or other voting ownership or equity interest or of
       40 to less than 50 % of the participation giving entitlement to vote at
       the election of directors or persons performing similar functions, or the
       right by any other means to elect or appoint directors or persons
       performing similar functions, provided such company is not a RELATED
       COMPANY. RADVISION will immediately inform SIEMENS in writing if
       RADVISION receives such a request of a Minority Company.

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2.4    SIEMENS may at its discretion engage subcontractors and have them perform
       work for and on behalf of SIEMENS including but not limited by
       authorizing them for the sole purpose of performing such work to use, to
       copy, to modify and/ or to otherwise work with the SOFTWARE PRODUCT in
       its SOURCE CODE form and RADVISION's CONFIDENTIAL INFORMATION, provided
       that such subcontractor shall (1) not be listed in Annex 8 attached
       hereto, and (2) have signed an agreement with SIEMENS that shall bind
       this subcontractor in writing to observe confidentiality obligations
       concerning the non-disclosure of the SOURCE CODE of the SOFTWARE PRODUCTS
       being not less stringent than the confidentiality obligations of SIEMENS
       under this AGREEMENT, and (3) warrant not to be engaged in producing
       COMPETITIVE PRODUCTS.

2.5    RADVISION hereby grants to SIEMENS the world-wide, non-exclusive,
       non-transferable, and subject to the terms and conditions of this
       AGREEMENT perpetual and irrevocable right to use, copy, translate and
       modify and/or to have used, copied, translated, modified any SYSTEM
       DOCUMENTATION in unmodified or modified form, for the purposes of
       utilizing the rights granted in Clause 2.1.

2.6    RADVISION hereby grants to SIEMENS the right to sublicense its rights
       regarding the SYSTEM DOCUMENTATION as set forth in 2.4 in connection with
       the sublicensing of EMBEDDED PRODUCTS, provided that the rights regarding
       the SYSTEM DOCUMENTATION are not sublicensed to END-USERs.

2.7    If migration to communication technology and information technology
       systems other than the REFERENCE ENVIRONMENT is requested by SIEMENS,
       RADVISION shall provide to SIEMENS the necessary MODIFICATIONS of the
       SOFTWARE PRODUCT, subject to the payment by SIEMENS of charges not higher
       than those usually charged by RADVISION to customers comparable to
       SIEMENS.

3      TRADENAMES, TRADEMARK NOTICES

3.1    RADVISION hereby grants and agrees to grant to SIEMENS, its RELATED
       COMPANIES and DISTRIBUTORS, the right to use and reproduce all present
       and future pertinent tradenames, and trademarks, with regard to the
       SOFTWARE PRODUCTS and EMBEDDED PRODUCTS in its original or duly
       abbreviated version. RADVISION shall grant respective rights to future
       trademarks, with regard to the SOFTWARE PRODUCT in its original or
       modified form whenever they come into existence.

3.2    SIEMENS and its RELATED COMPANIES may add and use its own name, trade
       name, logo, trademark(s) and intellectual property rights notices with
       regard to EMBEDDED PRODUCTS, in particular for the purposes of
       distribution and marketing.

3.3    Each of the Parties agrees, covenants and warrants that it shall not use,
       make reference to or otherwise designate in writing any of the other
       Party's trademarks, tradenames or other proprietary notices, except as
       specifically authorized in this AGREEMENT or any other legally binding
       agreement between the Parties, without the prior written consent of such
       other Party.

4      INTELLECTUAL PROPERTY RIGHTS

4.1.   Sublicensing Terms. An END-USER may be authorized only to use the
       EMBEDDED PRODUCT pursuant to a written agreement between Siemens, a
       RELATED COMPANY or a DISTRIBUTOR, as the case may be, and the END-USER.
       The terms and conditions of all such agreements shall provide
       substantially the same protection for the EMBEDDED PRODUCT as the terms
       and

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       conditions SIEMENS uses for its other software products, or the terms set
       forth herein this AGREEMENT.

4.2    Legends and Notices. SIEMENS agrees to reproduce, on all copies of the
       SOFTWARE PRODUCTS and EMBEDDED PRODUCTS and the SYSTEM DOCUMENTATION in
       unmodified or modified form, a RADVISION copyright notice in a form
       approved in advance by RADVISION. The copyright notice shall be the same
       or similar to the following: "Portions of this software are (C) 1996-20__
       RADVision Ltd. All IP Rights in such portions of the software products
       and documentation are owned by RADVision and are protected by United
       States copyright laws, other applicable copyright laws and international
       treaty provisions. RADVision and its suppliers retain all rights not
       expressly granted." If copyright is originated in more than one year,
       mentioning of the first and last year shall be sufficient. In the case of
       a new copyright (e.g. in UPGRADES), the respective notification shall be
       included in the UPGRADE whenever the latter is printed after written
       notification by RADVISION of such new copyright.

4.3.   Title. Notwithstanding, anything contained in this AGREEMENT to the
       contrary, title in and to the SOFTWARE PRODUCTS and SYSTEM DOCUMENTATION,
       additions and MODIFICATIONS to the SOFTWARE PRODUCTS created by
       RADVISION, including but not limited to, all copyright, patent, trade
       secret rights, and intellectual property rights shall remain in and with
       RADVISION.

4.4    SIEMENS shall sufficiently ensure the IP RIGHTS of RADVISION in the
       SOFTWARE PRODUCT when granting software sub-licenses to subcontractors by
       using similar terms and conditions SIEMENS regularly uses vis-a-vis
       comparable subcontractors when licensing its own computer software
       programs. SIEMENS shall reproduce on the EMBEDDED PRODUCT all notices
       regarding said RADVISION's rights.

4.5    If a subcontractor of SIEMENS is using the SOFTWARE PRODUCT it has got
       from SIEMENS in violation of such subcontractor's right as set forth
       herein this AGREEMENT, SIEMENS shall adequately pursue RADVISION's rights
       regarding the SOFTWARE PRODUCT and furnish all available and
       non-confidential information concerning such improper use of the SOFTWARE
       PRODUCT.

4.6    Without undue delay SIEMENS shall notify RADVISION if it comes to
       SIEMENS' knowledge that a specific subcontractor of the SOFTWARE PRODUCT
       is infringing RADVISION's proprietary rights. This Clause 4.6 shall not
       be construed to constitute an obligation on the part of SIEMENS, its
       RELATED COMPANIES or DISTRIBUTORS to grant RADVISION access to SIEMENS'
       customer list.

5      DELIVERABLES

5.1    For the purposes of this AGREEMENT and at no cost to SIEMENS, within five
       (5) business days of the EFFECTIVE DATE RADVISION shall deliver to
       SIEMENS the SOFTWARE PRODUCTS in SOURCE and OBJECT CODE form and the
       SYSTEM DOCUMENTATION on CD media. The SYSTEM DOCUMENTATION on CD will be
       delivered as detailed in Annex 2.

5.2    At any time during the term of this AGREEMENT, RADVISION shall render to
       SIEMENS at the earliest possible advance written notification of any
       MODIFICATION, UPDATES, UPGRADES, and of new features, functionality
       and/or interfaces of the SOFTWARE PRODUCTS.

5.3    Immediately after the respective release, subject to the maintenance
       provisions contained in this AGREEMENT, RADVISION shall deliver to
       SIEMENS the MODIFICATION, UPDATE and / or BUG FIX together with the
       latest version of the SOFTWARE PRODUCTS in SOURCE CODE and

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       OBJECT CODE form and the latest version of the SYSTEM DOCUMENTATION at no
       cost to SIEMENS on appropriate media.

6      ACCEPTANCE

6.1    SIEMENS shall be entitled to evaluate the SOFTWARE PRODUCTS and the
       SYSTEM DOCUMENTATION delivered by RADVISION within 30 (thirty) days (the
       "Evaluation Period") after the delivery of the SOFTWARE PRODUCTS and the
       SYSTEM DOCUMENTATION according to Clause 5.1.

6.2    Within 20 (twenty) working days of the expiry of the Evaluation Period,
       SIEMENS shall submit a written acceptance or rejection notice to
       RADVISION. A rejection notice shall be accompanied by a report on each
       failure of the SOFTWARE PRODUCTS to meet the specifications and criteria
       stated in Annex 1, 2, 3 and 4 and the functionality described in all
       related SYSTEM DOCUMENTATION, and a failure of the SYSTEM DOCUMENTATION
       to meet the requirements of Annexes 2 and 3 respectively, provided that
       SIEMENS has noticed such failure during the Evaluation Period. If
       RADVISION does not receive any written notice within the above time
       period the SOFTWARE PRODUCT and the SYSTEM DOCUMENTATION shall be deemed
       to be accepted by SIEMENS.

6.3    Acceptance shall be determined by SIEMENS and has to be demonstrated by
       RADVISION by conformance to the specifications and criteria stated in
       Annex 1, 2, 3 and 4, which may be amended from time to time by mutual
       written agreement of the Parties, and the functionality described in all
       related SYSTEM DOCUMENTATION. In case of any divergences the agreed
       specifications and criteria (including written amendment(s), if any) as
       per Annexes 1, 2, 3 and 4 shall prevail over the SYSTEM DOCUMENTATION.

6.4    Within 1 (one) month of receipt of any rejection notice (henceforth "the
       Correction Period"), RADVISION shall at no cost to SIEMENS make best
       efforts to correct and deliver corrected and tested SOFTWARE PRODUCTS and
       / or SYSTEM DOCUMENTATION to SIEMENS together with a statement of the
       corrections made by RADVISION.

6.5    After receipt of the corrected SOFTWARE PRODUCTS and / or SYSTEM
       DOCUMENTATION and the statement of corrections as per Clause 6.4, SIEMENS
       is entitled to re-evaluate such corrected and tested SOFTWARE PRODUCTS
       and / or SYSTEM DOCUMENTATION . One half of the costs of re-evaluation
       shall be borne by RADVISION if and when the costs per incident exceed US
       $ 5000, provided that the costs to be borne by RADVision shall in no
       event exceed the amount of US $ 15,000. This procedure will be repeated
       until SIEMENS accepts the deliverables in writing. However, if sixty (60)
       days after SIEMENS has received the corrected SOFTWARE PRODUCTS and / or
       SYSTEM DOCUMENTATION, RADVISION does not receive any written notice, the
       SOFTWARE PRODUCTS and the SYSTEM DOCUMENTATION shall be deemed to be
       accepted by SIEMENS.

6.6    If corrections provided by RADVISION in compliance with the Correction
       Period are repeatedly insufficient to achieve full compliance with Clause
       6.2 obligations, or if RADVISION fails to provide necessary corrections
       and tests in due time, or if SIEMENS' interest in the SOFTWARE PRODUCTS
       and / or SYSTEM DOCUMENTATION becomes frustrated due to the delay in
       submitting SOFTWARE PRODUCTS and / or SYSTEM DOCUMENTATION complying with
       Clause 6.2 obligations, SIEMENS may at its option and notwithstanding any
       other right it may have under applicable law:

       6.6.1      either propose a re-scheduled correction period. Rejection of
                  any SOFTWARE PRODUCTS and / or SYSTEM DOCUMENTATION shall be
                  cured by delivery to SIEMENS within said re-scheduled
                  correction period of a SOFTWARE PRODUCT and /

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                  or SYSTEM DOCUMENTATION which complies with Clause 6.2
                  obligations and accompanied by a statement of correction from
                  RADVISION; or

       6.6.2      elect to accept the non-acceptable Software Product and / or
                  SYSTEM DOCUMENTATION in its then-current condition, or

       6.6.3      finally reject the non-acceptable SOFTWARE PRODUCT and / or
                  SYSTEM DOCUMENTATION and terminate this AGREEMENT with regard
                  to such non-acceptable SOFTWARE PRODUCT or with regard to all
                  SOFTWARE PRODUCTS. If SIEMENS elects to terminate the
                  AGREEMENT pursuant to this Clause 6.6.3, RADVISION shall
                  immediately return to SIEMENS the lump sum payments made to
                  RADVISION regarding the SOFTWARE PRODUCT to which the
                  termination of the AGREEMENT relates. Performance of RADVISION
                  of this obligation shall take place upon SIEMENS' return of
                  the non-acceptable SOFTWARE PRODUCT to which the termination
                  of the AGREEMENT relates and any copies and accompanying
                  SYSTEM DOCUMENTATION thereof to RADVISION. In case of
                  termination with respect to some but not all SOFTWARE
                  PRODUCTS, any rights granted to END-USERS shall not terminate
                  and the AGREEMENT shall remain in full force and effect with
                  respect to the other SOFTWARE PRODUCTS, if any. The right of
                  SIEMENS to terminate the entire AGREEMENT under Clause 17
                  remains unaffected.

7      WARRANTY

7.1    RADVISION warrants that the SOFTWARE PRODUCTS and the SYSTEM
       DOCUMENTATION will meet and comply with all specifications and criteria
       as set forth in Annexes 1, 2, 3 and 4. The same applies with regard to
       MODIFICATIONS, UPGRADES, and UPDATES to the then applicable specification
       and criteria. SIEMENS acknowledges that the SOFTWARE PRODUCTS may have
       errors or may not perform uninterrupted. Additionally, RADVISION does not
       warrant that the SOFTWARE PRODUCTS shall meet SIEMENS' requirements nor
       that it shall perform or operate in combination with other products.

7.2    If any SOFTWARE PRODUCT or SYSTEM DOCUMENTATION supplied by RADVISION
       fails to comply with this warranty within 12 (twelve) months of
       acceptance as per Clause 6, RADVISION shall make best efforts to correct
       all faults at no cost to SIEMENS in accordance with the detailed
       provisions set forth in Annex 6. The above obligation and the following
       procedure in this Clause 7 shall be SIEMENS' sole and final remedy for
       any claim regarding RADVISION's warranty set forth in Clause 7.1.

7.3    Should RADVISION be unable to provide a solution for errors within the
       time periods specified in Annex 6, then, on 10 (ten) days' notice being
       given by SIEMENS to RADVISION (unless the solution is provided within
       said 10 (ten) days notice period), no royalties or proportional
       maintenance fees due under this AGREEMENT shall be owed by SIEMENS with
       regard to the defective SOFTWARE PRODUCT portion for the period starting
       after the 10 days notice period has elapsed until a code correction or a
       circumvention for the error is made available to SIEMENS. SIEMENS is
       entitled to recover from RADVISION the respective payments, if they were
       already made prior to the expiry of the notice period.

7.4    If RADVISION fails more than 2 (two) times to correct the same error,
       SIEMENS may, notwithstanding any other remedies under this AGREEMENT or
       applicable law, terminate this AGREEMENT with regard to such defective
       SOFTWARE PRODUCT, without prejudice to the other provisions of the
       AGREEMENT. Particularly the right of SIEMENS to terminate the entire
       AGREEMENT under Clause 17 shall remain unaffected. In case of
       termination, SIEMENS may disclaim any right to such defective SOFTWARE
       PRODUCT and any copies made thereof to

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       RADVISION, and SIEMENS shall be entitled (i) if the error is to be
       classified as "Fatal" or "Severe Impact" as set out in Annex 6, to a
       refund of any payments made to RADVISION under this AGREEMENT with regard
       to the defective SOFTWARE PRODUCT, or (ii) if the error is to be
       classified as "Degraded Operations" or "Minimal Impact" as set out in
       Annex 6, to a refund of any royalty fees paid under this AGREEMENT with
       regard to such defective SOFTWARE PRODUCT. Clause 17.4 shall apply
       accordingly to such termination.

7.5    NO WARRANTY SHALL APPLY TO DEFECTS, FAILURES, DAMAGES, OR LOSSES
       RESULTING FROM CORRECTIONS, REPAIRS OR SERVICE WHICH CAN BE DEMONSTRATED
       THAT IS NECESSITATED BY:

       (1st) SIEMENS' OR THE ULTIMATE USER'S SYSTEM, OTHER EQUIPMENT OR ITS USE;

       (2nd) ANY ACT OR OMISSION BY ANYONE OTHER THAN RADVISION;

       (3rd) POWER SHORTAGES OR IRREGULARITIES;

       (4th) MODIFICATION OF THE SOFTWARE PRODUCT BY ANYONE OTHER THAN
       RADVISION;

       (5th) OR ANY OTHER CAUSE BEYOND RADVISION'S CONTROL.

       In any such case, RADVISION shall nevertheless on request of SIEMENS
       eliminate any defect of the SOFTWARE PRODUCT or EMBEDDED PRODUCT,
       provided that SIEMENS shall be charged for such work according to the
       fees for technical support as set out in Annex 5.

7.6    RADVISION hereby warrants and represents that the SOFTWARE Product is
       "Year2000 Conform".

       "Year2000 Conform" or "Year2000 Conformity" shall mean that neither
       performance nor functionality is affected by dates prior to, during and
       after the year2000.
       In particular:
       Rule 1. - No value for current date will cause any interruption in
       operation.
       Rule 2. - Date-based functionality must behave consistently for dates
       prior to, during and after year2000.
       Rule 3. - In all interfaces and data storage, the century in any date
       must be specified either explicitly or by unambiguous algorithms or
       inferencing rules.
       Rule 4. - Year 2000 must be recognized as a leap year.
       [THE FOREGOING DEFINITION IS MADE IN ACCORDANCE WITH THE YEAR2000
       CONFORMITY DEFINITION ISSUED BY THE BRITISH STANDARDS INSTITUTION]

       A.     If RADVISION gets knowledge of information which might cause
              doubts regarding the Year2000 Conformity of the PRODUCTS,
              RADVISION shall promptly inform SIEMENS in writing about such
              information under the following address:

       B.     In case the SOFTWARE PRODUCT does not comply with the warranty and
              representation set out above, RADVISION shall assume liability for
              any and all damages resulting therefrom, including any and all
              related damages to SIEMENS' customers. In the event, RADVISION
              shall,, without any cost for SIEMENS, and without any undue delay
              perform best efforts to establish "Year2000 Conformity" regarding
              any and all of the SOFTWARE PRODUCTS concerned. Except in cases of
              product liability or willful or gross negligent actions and/or
              omissions, the total liability assumed by RADVISION for damages
              resulting from non-compliance of the SOFTWARE PRODUCTS with this
              warranty and representation, however, shall be limited to an
              overall maximum amount which is equivalent to 20 % (twenty
              percent) of the accumulated value of SOFTWARE PRODUCTS purchased
              by SIEMENS from RADVISION until expiry of this warranty and
              representation but shall not be less than the equivalent of
              $150,000 (hundred and fifty thousand). The term "value of SOFTWARE
              PRODUCTS" shall include any lump sum and royalty fees to be paid
              by SIEMENS for the SOFTWARE PRODUCT, whereby value added tax on
              such amounts shall not be taken into

<PAGE>

              account. RADVISION is not entitled to retain any payments for
              damages before August 31, 2001 with reference to the above
              described limitation of liability. If it is evident after August
              31, 2001 that the amount of payment for damages by RADVISION
              exceeds the above described limitation of liability, SIEMENS shall
              promptly balance the difference.

              If RADVISION does not, within a reasonable period of time, not to
              exceed thirty (30) working days, establish "Year2000 Conformity"
              nor bypasses any deficiencies with regard to "Year2000 Conformity"
              in a manner reasonably acceptable to SIEMENS and its customers,
              the regulations of Clause 7.4 shall apply.

       C.     The warranty and representation contained in this Clause 7.8
              herein shall be valid until the end of August 31, 2001.

       D.     The foregoing paragraphs A up to and including D shall remain
              unaffected by any contractual provisions to the contrary contained
              in this AGREEMENT.

7.9    ALL THE WARRANTIES ABOVE ARE EXCLUSIVE AND IN LIEU OF ALL OTHER
       WARRANTIES, WHETHER EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES
       OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

8      PAYMENT, RECORD KEEPING, REPORTS, AUDIT

8.1    In consideration of the license granted hereunder and all other rights
       granted in this AGREEMENT, SIEMENS shall pay the lump sum and royalty
       fees according to Annex 5.

       SIEMENS shall pay to RADVISION

       -      a lump sum as set out in Annex 5 (the "Lump Sum") as aggregate one
              time payment for all the SOFTWARE PRODUCTS,
       -      a royalty fee as set out in Annex 5,
       -      an annual maintenance fee as set out in Annex 5.

8.2    Lump Sum - SIEMENS shall issue a purchase order within 10 days after
       signing of the AGREEMENT for the amount of 75% of the total Lump Sum,
       this amount shall be paid within 30 days from the date of receipt of
       respective invoice. SIEMENS shall issue another purchase order
       immediately upon the acceptance of the SOFTWARE PRODUCTS as per Clause 6
       for the remaining balance of 25% of the total Lump Sum, this amount shall
       be paid within 30 days from the date of receipt of respective invoice.

8.3    Royalty fees - Following the signing of this AGREEMENT by both Parties,
       SIEMENS shall prepare a statement in respect of each calendar quarter
       (ending on March 31st, June 30th, September 30th and December 31st) or
       part thereof, detailing the number of copies of the EMBEDDED PRODUCT
       sold/distributed and the number of ports (concurrent calls) per EMBEDDED
       PRODUCT, and the amount of royalties due to RADVISION, according to the
       per unit royalty fees in Annex 5. Such a statement shall be submitted to
       RADVISION within thirty (30) days of the end of the calendar quarter or
       part thereof to which it relates. Upon receipt by RADVISION of the
       preceding statement, RADVISION shall invoice SIEMENS via proper written
       invoice, for the royalty fees due and payable. SIEMENS agrees to pay to
       RADVISION, no later than thirty (30) days from receipt of the invoice,
       payment for the royalty fees due and payable.

8.4    The annual maintenance fee required pursuant to Clause 11 shall be
       invoiced yearly by RADVISION at the beginning of each 12 months period
       starting with delivery of the SOFTWARE PRODUCTS and the SYSTEM
       DOCUMENTATION and paid within thirty (30) days thereafter by

<PAGE>

       SIEMENS. The invoice shall be accompanied by a statement and reference
       number to the invoice issued.

8.5    Each report by SIEMENS shall be accompanied by a statement explaining the
       computation of the royalties and number of copies made.

8.6    Not more than once a year, RADVISION may designate an independent
       certified public auditor who executes upon request by SIEMENS an
       appropriate confidentiality AGREEMENT, to inspect the records of SIEMENS
       directly relevant to the computation of the royalties due under this
       AGREEMENT during SIEMENS' regular business hours to determine the
       accuracy of all payments so far made by SIEMENS hereunder.

       Any and all expenses of such audit shall be borne by RADVISION unless
       audit discloses an underpayment of more than 5 (five) percent in which
       case SIEMENS shall bear the reasonable expenses incurred by RADVISION.

       Any payments made shall be conclusively presumed accurate after 3 (three)
       years from date of delivery to RADVISION by SIEMENS of the respective
       report and shall be excluded from auditing. RADVISION undertakes to
       provide that any and all statements or records or notes disclosed to the
       auditor shall be held in confidence by the auditor and RADVISION as
       CONFIDENTIAL INFORMATION of SIEMENS.

8.7    Any and all payments, including maintenance fees hereunder shall be in
       US-$, and shall be considered as properly given or made if by electronic
       funds transfer to a RADVISION designated U.S. $ bank account.

8.8    Any and all taxes, charges and/or other duties (henceforth "Taxes")
       imposed on RADVISION with respect to any payments to be made by SIEMENS
       to RADVISION under or in connection with this AGREEMENT, shall be borne
       and paid by RADVISION. If required by the laws of Germany, SIEMENS may
       deduct Taxes imposed in Germany on RADVISION with respect to such
       payments from the payments due hereunder and pay such Taxes on behalf of
       RADVISION. To the extent SIEMENS has so deducted and paid Taxes on behalf
       of RADVISION, SIEMENS shall, if so requested by RADVISION, submit to
       RADVISION official tax receipts issued by the German tax authorities and
       evidencing the payment by SIEMENS of Taxes in Germany on behalf of
       RADVISION.

       To the extent the Double Taxation Convention between Germany and Israel
       entitles RADVISION to claim a reduction of or an exemption from Taxes
       imposed on and to be paid by RADVISION according to the laws of Germany,
       SIEMENS shall use reasonable efforts to support RADVISION in obtaining a
       tax reduction/exemption certificate (or the like) from the German tax
       authorities, if so required by the aforementioned Double Taxation
       Convention and/or German tax law to validate the aforementioned claim for
       tax reduction/exemption. As long as SIEMENS has not received copy of such
       tax reduction/exemption certificate from RADVISION, the regulations of
       the foregoing clause shall apply.

8.9    The AGREEMENT may be amended to include further software products and new
       categories of products as set forth in Annex 5.

8.10   SIEMENS has the option to pay a fixed annual royalty fee (hereafter
       called "Buy-Out Fee") for each fiscal year (from October 1st through
       September 30th) instead of paying RADVISION royalty fees. The Parties
       negotiate such Buy-Out -Fee at a later stage in good faith.

8.11   Late Payment Charges. RADVISION reserves the right to levy an interest
       charge for outstanding accrued moneys, duly to be paid hereunder, not
       received in accordance with payment terms as described above. This charge
       will take the form of base interest at a monthly compound rate as

<PAGE>

       published by the European Central Bank on all amounts outstanding for
       more than 60 (sixty) days from the due date of payment. Interest will be
       due on the 61st (sixty first) day for the preceding 60 (sixty) days and
       thereafter levied monthly or part-monthly until arrears plus interest
       have been cleared. This charge applies to amounts of lump sum, and/or
       royalty fee, and/or Buy-Out Fees and/or maintenance fees payments.

9      INDEMNIFICATION

9.1    RADVISION represents and warrants that RADVISION holds any and all
       rights, title and interest in and to the SOFTWARE PRODUCTS and the SYSTEM
       DOCUMENTATION and that RADVISION is entitled to grant the rights and
       licenses herein, and that as of the EFFECTIVE DATE there are - to the
       best of RADVISION's knowledge - no claims, disputes, suits, arbitral or
       other proceedings pending or anticipated which may affect either the
       rights and licenses granted hereunder or the warranties and
       representations made hereunder by RADVISION.

       In particular, RADVISION represents and warrants that the SOFTWARE
       PRODUCTS and SYSTEM DOCUMENTATION do not infringe upon any copyright,
       patent or any other proprietary right of any third party and do not
       violate the trade secret rights of any third party.

       This warranty applies mutatis mutandis to any alteration of the SYSTEM
       DOCUMENTATION.

9.2    RADVISION shall, at its sole cost, defend, indemnify and hold harmless
       SIEMENS

       -      if no RELATED COMPANY is involved from any and all claims,
              disputes, proceedings, suits, actions, costs, expenses, damages,
              penalties (henceforth collectively referred to as "claim") finally
              awarded resulting from any breach of any warranty in Clause 9.1
              and

       -      If a RELATED COMPANY is involved from any and all claims,
              disputes, proceedings, suits, actions, costs, expenses, damages,
              penalties (henceforth collectively referred to as "claim")
              resulting from any breach of any warranty in Clause 9.1 and,

       provided that

       -      SIEMENS notifies RADVISION in writing without undue delay after
              becoming aware of such claim;

       -      SIEMENS provides RADVISION with the sole control and authority -
              as far as legally possible and always provided that such procedure
              does not adversely affect material business interests of SIEMENS
              to defend and settle such claim; SIEMENS may participate in any
              such settlement negotiation;

       -      SIEMENS at RADVISION's expense cooperates to a reasonable extent
              in the defense and settlement as requested by RADVISION; and

       -      SIEMENS does not of its own accord acknowledge or accept such
              claim from any third party.

       -      SIEMENS does not reach to any settlement or agreement of any kind
              with respect to said claim without RADVISION's prior written
              consent.

9.3    Should RADVISION be in breach of any warranties in Clause 9.1 including
       but not limited if a temporary or final injunction is obtained against
       the use of the SOFTWARE PRODUCT or the SYSTEM DOCUMENTATION or any
       portion thereof, RADVISION will at its sole cost and at its option,

<PAGE>

       -      procure to SIEMENS the right to continue to exercise the rights
              stated in Clauses 2 and 3 of this AGREEMENT;

       -      replace or modify the SOFTWARE PRODUCT and SYSTEM DOCUMENTATION or
              the infringing portion thereof without undue delay such that they
              no longer infringe any right of any third party, as long as the
              performance and functionality of the SOFTWARE PRODUCT and SYSTEM
              DOCUMENTATION is not adversely affected by such replacement or
              modification and the SOFTWARE PRODUCT and SYSTEM DOCUMENTATION
              continue to materially conform with the specifications and
              criteria as set forth in Annexes 1, 2, 3 and 4; or

       -      refund any payments hereunder.

9.4    The indemnity in this Clause 9 shall not apply to

       -      infringements caused by any use of the SOFTWARE PRODUCT in
              combination, operation, or use with any machine, program or other
              material not designated for use with the SOFTWARE PRODUCT or
              otherwise as agreed by the Parties;

       -      modifications of the SOFTWARE PRODUCT and / or the SYSTEM
              DOCUMENTATION made by SIEMENS and/or its RELATED COMPANIES if
              these modifications have obviously caused the relevant
              infringement. ,Said modifications shall also include modifications
              which were performed by RADVISION for and on behalf of SIEMENS
              according to SIEMENS' specifications as detailed in a written
              agreement.

9.5        All RADVISION's obligations set forth in Clauses 9.1-9.4 above are
           SIEMENS' sole and final remedy for any claim regarding infringement
           under Clause 9.1.

10     PRODUCT LIABILITY AND FORCE MAJEURE

10.1   If the use of the SOFTWARE PRODUCT should result in third party claims
       resulting from product liability, against SIEMENS, RADVISION shall
       indemnify, defend and hold harmless SIEMENS

       -      if no RELATED COMPANY is involved against the damages finally
              awarded, except in case RADVISION can demonstrate that such
              liability results from a material breach of this AGREEMENT,
              willful misconduct or from gross negligence of SIEMENS and

       -      If a RELATED COMPANY is involved against the damages, except in
              case RADVISION can demonstrate that such liability results from a
              material breach of this AGREEMENT, willful misconduct or from
              gross negligence of SIEMENS,

       provided that

       -      SIEMENS notifies RADVISION in writing without undue delay after
              becoming aware of such claim;

       -      SIEMENS provides RADVISION with the sole control and authority -
              as far as legally possible and always provided that such procedure
              does not adversely affect material business interests of SIEMENS
              to defend and settle such claim; SIEMENS may participate in any
              such settlement negotiation;

       -      SIEMENS at RADVISION's expense cooperates to a reasonable extent
              in the defense and settlement as requested by RADVISION; and

       -      SIEMENS does not of its own accord acknowledge or accept such
              claim from any third party.

<PAGE>

       -      SIEMENS does not reach to any settlement or agreement of any kind
              with respect to said claim without RADVISION's prior written
              consent.

10.2   Neither Party shall be liable for inability to perform its obligations
       under this AGREEMENT, excluding any payment obligation, to the extent
       such inability is due to Force Majeure, including but not limited to Acts
       of God, general labor disputes, riots, unforeseeable circumstances beyond
       the reasonable control of a Party.

       Each Party shall give the other Party prompt written notice of the
       occurrence of any event of Force Majeure that may cause delay hereunder,
       and the date of performance by any Party that gives such notice shall be
       extended for a period not exceeding the period of delay caused by the
       event of Force Majeure thus identified and the facts of which are
       demonstrated by the Party giving such notice.

       If a Force Majeure event shall continue for more than 6 (six) consecutive
       months rendering either Party unable to perform its obligations under
       this AGREEMENT, each Party may terminate this AGREEMENT pursuant to
       Clause 17.2 below.

11     MAINTENANCE

11.1   RADVISION shall maintain the SOFTWARE PRODUCTS as delivered by RADVISION
       in accordance with the detailed provisions of Annex 6. RADVISION shall
       help diagnose any error raised in modified SOFTWARE PRODUCTS and EMBEDDED
       PRODUCTS. In case RADVISION demonstrates to SIEMENS' reasonable
       satisfaction that the error is not in the part delivered by RADVISION it
       shall be SIEMENS' responsibility to maintain and fix the error. RADVISION
       will provide the maintenance service by appropriately skilled employees
       who are familiar with the SOFTWARE PRODUCTS.

       Regarding errors which can be demonstrated by RADVISION are in those
       parts of the SOFTWARE PRODUCTS that were modified by SIEMENS, RADVISION
       may charge SIEMENS for the elimination of such errors according to the
       rates for technical support as set out in Annex 5.

       RADVISION shall be responsible for quality assurance of the further
       development of the SOFTWARE PRODUCTS.

11.2   The software maintenance service comprises in particular

       -      the submission of service reports upon reporting of a problem or
              question
       -      telephone consulting with a view to identifying the error for the
              generation of diagnostic documentation via hot line;
       -      support via teleservice;
       -      elimination of errors;
       -      use of the web and email service to RADVISION's service center,
       -      supply of UPDATES free of additional charge; and
       -      supply of UPGRADES at additional charge on SIEMENS' request.

11.3   In particular, RADVISION shall provide SIEMENS with MODIFICATIONS, BUG
       FIXES, UPGRADES (subject to additional payment) and UPDATES which contain
       developments and MODIFICATIONS pursuant to fault correction and
       functional enhancement. Such MODIFICATIONS, BUG FIXES, UPGRADES and
       UPDATES shall not adversely affect the functionality or performance of
       the SOFTWARE PRODUCTS.

<PAGE>

       RADVISION intends to discuss with SIEMENS its SOFTWARE PRODUCTS road maps
       which may adversely affect SIEMENS' business. RADVISION may upon its sole
       discretion consider SIEMENS' proposals.

11.4   RADVISION's maintenance service shall as well apply in relation to all
       MODIFICATIONS , BUG FIXES, UPDATES and UPGRADES delivered.

11.5   SIEMENS and its RELATED COMPANIES will communicate any requests for
       support through one of the support centers. SIEMENS will name three
       contact persons for each support center who are responsible for
       communicating the requests of this support center. SIEMENS will notify
       RADVISION of any change regarding those contact persons.

11.6   Only the contact persons from the support centers shall be entitled to
       communicate to RADVISION suspected errors in the SOFTWARE PRODUCTS along
       with all information available in order to reproduce the errors on a
       REFERENCE ENVIRONMENT or the EMBEDDED PRODUCT. Depending on the error
       category, RADVISION agrees to respond and to perform best efforts to
       correct such errors in the manner and within the time periods given in
       Annex 6.

11.7   Should RADVISION be unable to provide a solution for errors within the
       time periods specified in Annex 6, then, on 10 (ten) days' notice being
       given by SIEMENS to RADVISION (unless the solution is provided within
       said 10 (ten) days notice period), no maintenance fees due under this
       AGREEMENT shall be owed by SIEMENS for the period starting after the 10
       days notice period has elapsed until a code correction or a circumvention
       for the error is made available to SIEMENS. SIEMENS is entitled to
       recover from RADVISION the respective payments, if they were already made
       prior to the expiry of the notice period.

11.8   If RADVISION fails more than 3 (three) times to correct the same error,
       SIEMENS with regard to the defective SOFTWARE PRODUCT portion may, at its
       option and notwithstanding any other remedies in this Clause 11 or any
       other right it may have under applicable law:

       -      recover from RADVISION (i) if the error is to be classified as
              "Fatal" or "Severe Impact" as set out in Annex 6 any royalty and
              proportional maintenance fee payments made to RADVISION under this
              AGREEMENT in the last 12 months (ii) if the error is to be
              classified as "Degraded Operations" or "Minimal Impact" as set out
              in Annex 6, any proportional maintenance fees paid under this
              AGREEMENT in the last 12 months, or

       -      if the error is classified as "Fatal" or "Severe Impact" as set
              out in Annex 6 terminate this AGREEMENT with regard to the
              maintenance of such defective SOFTWARE PRODUCT or with regard to
              all SOFTWARE PRODUCTS without prejudice to the other provisions of
              the AGREEMENT. Particularly the right of SIEMENS to terminate the
              entire AGREEMENT under Clause 17 shall remain unaffected. In case
              of termination, SIEMENS may disclaim any right to such defective
              SOFTWARE PRODUCT and any copies made thereof to RADVISION, and
              SIEMENS may reclaim any royalty and maintenance fee payments made
              to RADVISION under this AGREEMENT in the last 12 months. Clause
              17.4 shall apply accordingly to such termination.

11.9   Upon becoming aware thereof, RADVISION will promptly notify SIEMENS of
       any bugs and errors in the serviced SOFTWARE PRODUCTS. RADVISION has
       established a single support center for the placing of bug and error
       reports and for other requests to RADVISION's support center for
       maintenance services for the serviced SOFTWARE PRODUCTS.

11.10  The maintenance services for the SOFTWARE PRODUCTS, set forth in this
       AGREEMENT, are subject to the payment of the maintenance fees set out in
       Annex 5 and will be provided by RADVISION for a period of 1 (one) year
       following the last payment of maintenance fees for a support center,
       unless such maintenance is terminated pursuant to this AGREEMENT.

<PAGE>

       Maintenance services will be provided to the SOFTWARE PRODUCTS for a
       release that is current within eighteen (18) months on request of one of
       the designated support centers.

12     TECHNICAL SUPPORT; TRAINING

12.1   RADVISION agrees to provide on request of SIEMENS technical support and
       training to SIEMENS' software support and development personnel for the
       SOFTWARE PRODUCT.

12.2   RADVISION shall, on request of SIEMENS, provide training of SIEMENS' and
       / or RELATED COMPANIES' and / or DISTRIBUTORS personnel in all matters
       relating to the SOFTWARE PRODUCTS, including but not limited to product
       features and use, at reasonable rates not to exceed the training rates
       set out in Annex 5.

       RADVISION shall provide 5 days training a year for a group of 25 persons
       for each SIEMENS' support center at no charge to SIEMENS and RELATED
       COMPANIES and / or DISTRIBUTORS, provided that SIEMENS shall bear
       travel-related expenses of its own personnel in this regard.

       All such training shall be conducted at facilities of SIEMENS or RELATED
       COMPANIES at SIEMENS' discretion.

12.3   RADVISION is prepared to provide pre- and post-sales technical support to
       SIEMENS for the SOFTWARE PRODUCTS, included but not limited to the
       development of country specific versions of the SOFTWARE PRODUCTS. This
       service shall be provided by RADVISION at SIEMENS' request to SIEMENS and
       RELATED COMPANIES according to the terms agreed on a case by case basis.
       RADVISION will provide SIEMENS with primary and secondary points of
       contact for such pre- and post-sales technical support during RADVISIONs'
       normal business hours. All such technical support will take the form of
       telephone calls, correspondence, remote log-in by RADVISION into SIEMENS'
       computer systems, or visits by RADVISION's technical staff to SIEMENS'
       technical staff. SIEMENS shall pay for such services according to the
       rates for additional technical support as set out in Annex 5.

12.4   For larger systems or for END-USERS purchasing on a large scale, SIEMENS
       and/or RELATED COMPANIES may want to secure RADVISION's assistance to
       make additional changes to the configuration of the SOFTWARE PRODUCT.
       RADVISION is willing to assist SIEMENS and/or its RELATED COMPANIES.

       If RADVISION and SIEMENS are unable to reach agreement on the terms of
       any projects, including responsibility for payment of costs of the
       modification of the SOFTWARE PRODUCT, or if the performance of the
       project is expected to interfere with projects already in progress or
       planned by either Party, then either SIEMENS or RADVISION may refer such
       project for review by a committee consisting of one senior technical
       manager designated by each Party. The committee shall review the scope
       and objectives of existing projects, determine the minimum necessary
       changes to the proposed scope of a project in order to avert or reduce
       prejudice to either Party's interests, and the relative priority of
       performance and completion of such project in the light of each Party's
       critical needs.

12.5   For at least eighteen (18) months after a SOFTWARE PRODUCT's UPDATE or
       UPGRADE has been accepted by SIEMENS, RADVISION shall provide software
       support to SIEMENS for the immediately preceding UPDATE and UPGRADE, if
       any, of such SOFTWARE PRODUCT.

12.6   RADVISION shall inform SIEMENS of RADVISION's engineering contact who
       shall serve as liaison with SIEMENS for software engineering support.

<PAGE>

13     CONFIDENTIALITY, MEDIA RELEASES

13.1   Subject to the provisions set out in this AGREEMENT, the Parties agree to
       maintain in confidence any and all CONFIDENTIAL INFORMATION with the same
       degree of care with which they treat and protect their own proprietary
       information (but not less than reasonable care as applied by a prudent
       businessman).

13.2   Neither Party will use the CONFIDENTIAL INFORMATION except in the course
       of exercising its rights or fulfilling its obligations hereunder, nor
       will it disclose such information to third parties. SIEMENS is prohibited
       from, and shall not, develop, market or sell any COMPETITIVE PRODUCT by
       using CONFIDENTIAL INFORMATION of RADVISION. As third parties under this
       AGREEMENT shall not be deemed RELATED COMPANIES and DISTRIBUTORS who are
       bound by confidentiality obligations at least as strict as the
       confidentiality obligations of this Clause 13. The receiving Party may
       disclose confidential Information to such END-USER and parties
       contracting with the receiving Party as may be necessary for the
       fulfillment of its obligations/using of its rights under this AGREEMENT
       but only if they are bound by confidentiality obligations at least as
       strict as the confidentiality obligations of this Clause 13.

13.3   The confidentiality obligations hereunder shall not extend to any items
       of information which the receiving Party demonstrates that (1) now or
       hereafter may be in the public domain by acts not attributable to the
       receiving Party, (2) were in the possession of or known to the receiving
       Party prior to receipt from the furnishing Party, (3) have been lawfully
       received from other sources, provided such other source did not receive
       it as a result of a breach of confidentiality obligations towards the
       Party whose information is concerned, or (4) have been independently
       developed by the receiving Party and not as a result of a breach of this
       AGREEMENT, or (5) have to be disclosed to a public authority due to
       mandatory law, provided that the furnishing Party is given prompt notice
       before such disclosure.

13.4   The confidentiality obligations shall - irrespective of the term of this
       AGREEMENT - expire 5 (five) years after the date on which the respective
       information was furnished.

13.5   Both Parties acknowledge that the unauthorized disclosure of such
       CONFIDENTIAL INFORMATION could cause irreparable harm and significant
       injury to the other Party which may be difficult to ascertain.
       Accordingly, both Parties shall indemnify each other against any loss and
       expense arising due to such unauthorized disclosure. Furthermore, both
       Parties agree that they shall have the right to obtain an immediate
       injuction enjoining any such unauthorized disclosure.

13.6   Media releases or other information on the conclusion and the content of
       this AGREEMENT shall only be made available to third parties,
       particularly the media, with the prior approval of the other Party.

13.7   SIEMENS shall not copy, in whole or in part, the SOURCE CODE of the
       SOFTWARE PRODUCTS and the SYSTEM DOCUMENTATION except as explicitly
       permitted herein and furthermore for internal backup or archival purposes
       only.

14     EXPORT CONTROL

SOFTWARE PRODUCTS and SYSTEM DOCUMENTATION may be subject to special permits in
accordance with the export regulations of the United States of America, Germany,
the European Union (EU) or any other state, in particular when re-exported to
third countries.

<PAGE>

Both Parties therefore undertake to comply with such export control regulations
per delivery product, as defined in Annex 7. RADVISION shall advise and help
SIEMENS to comply with said export control regulations at SIEMENS` expense.

15     NOTICES

15.1   Any notices, authorizations and requests in connection with this
       AGREEMENT shall be in writing and delivered personally or sent by telefax
       or postal mail. Any notices given pursuant to this AGREEMENT shall be in
       English.

15.2   Any notices to be sent to RADVISION shall be addressed as follows:

       RADVISION Ltd.
       24 Raoul Wallenberg Street, Tel Aviv,
       Israel
       Attn: Adit Tevel
       Cc: Legal Department
        Fax: +972-3 648 9973
        Phone: +972-3 765 9820

15.3   Any notices to be sent to SIEMENS shall be addressed as follows:

       Siemens Aktiengesellschaft
       Hofmannstr. 51,
       D-81359 Muenchen
       Germany

       For Technical issues :
       Attn: Mr. Bitzinger
       Fax: +49-89 722 23847
       Phone: +49-89 722 23846

       For any other issue:
       Attn: Mr. Sentuerk
       Fax: +49-89 722 47018
       Phone: +49-89 722 49251

15.4   The names given above are for convenience purposes only and shall not
       delay the effectiveness of notices in the event of this person's absence.

16     ARBITRATION, GOVERNING LAW

16.1   All disputes arising out of or in connection with this AGREEMENT
       including any question regarding its existence, validity or termination,
       shall be settled by an amicable effort on the part of both Parties. An
       attempt to arrive at a settlement shall be deemed to have failed as soon
       as one of the Parties so notifies the other Party in writing.

       If such an attempt has failed, all disputes arising out of or in
       connection with this AGREEMENT, including any question regarding its
       existence, validity or termination, shall be finally settled under

<PAGE>

       the Rules of Arbitration of the International Chamber of Commerce, Paris
       (ICC) by 3 (three) arbitrators appointed in accordance with said Rules.
       Each Party shall nominate one arbitrator to be confirmed by the competent
       authority under the applicable Rules (Appointing Authority). Both
       arbitrators shall agree on the third arbitrator within thirty days.
       Should the two arbitrators fail, within the above time-limit, to reach
       agreement on the third arbitrator, he shall be appointed by the
       Appointing Authority. If there are two or more defendants, any nomination
       of an arbitrator by or on behalf of such defendants must be by joint
       agreement between them. If defendants fails within the time-limit fixed
       by the Appointing Authority to agree on such joint nomination, the
       proceedings against each of them must be separate. The seat of
       arbitration shall be Zurich, Switzerland. The procedural law of this
       place shall apply where the Rules are silent.

       The language to be used in the arbitration proceeding shall be English.

16.2   All disputes shall be settled in accordance with the provisions of this
       AGREEMENT and all other agreement regarding its performance, otherwise in
       accordance with the substantive law in force in France without reference
       to other laws, with regard to the validity and scope of IP RIGHTS in
       accordance with the mandatory law of the country where such IP RIGHTS
       have been originated and/or registered. The application of the United
       Nations Convention on Contracts for the International Sale of Goods of
       April 11, 1980 shall be excluded.

16.3   The award of the arbitration shall be final and non-appealable.

17     TERM AND TERMINATION

17.1   The term of this AGREEMENT shall commence on the EFFECTIVE DATE and
       continue thereafter for a period of 5 (five) years. Thereafter, the term
       shall automatically be extended by consecutive one year periods unless
       the AGREEMENT is terminated by one of the Parties giving not less than 3
       (three) months prior written notice to the other Party.

17.2   Notwithstanding any other rights such Party may have, either Party may
       elect to terminate this AGREEMENT for a severe breach of contract by the
       other Party by giving at least 30 (thirty) days prior written notice to
       the other Party specifying the nature of such breach; provided that,
       however, should such severe breach of contract be cured by the other
       Party within said 30 (thirty)days period such notice shall be of no
       further force and effect and this AGREEMENT shall not be terminated
       thereby.

       Without any limitation hereto, the following events shall be deemed to
       constitute a severe breach of contract:

       -      a Party has failed substantially in the performance of any
              material obligation;

       -      any declaration of bankruptcy, any commencement of proceedings to
              put substantially all business assets into the hands of a trustee
              or receiver, or any direct or indirect seizure of substantially
              all business assets.

17.3   MAILTO:In the event RADVISION merges with another company or at least 50%
       of RADVISION is acquired by a third party which is a competitor of
       SIEMENS in the field of telecommunication and information technology
       systems, if substantial rights to the SOFTWARE PRODUCT are transferred to
       a competitor of SIEMENS in the field of telecommunication and information
       technology systems or if RADVISION otherwise comes under the direct or
       indirect influence or control of a competitor active in the field of
       telecommunication and information technology systems, RADVISION will

<PAGE>

       promptly notify SIEMENS thereof in writing and SIEMENS shall have the
       right, within 2 (two) months after having knowledge of the above
       mentioned circumstances to terminate this AGREEMENT entirely or only
       parts thereof with immediate effect or with effect from the end of a
       period specified by SIEMENS in its termination notice, however not later
       than six months after giving notice of the termination.

17.4   Following any termination except termination by RADVISION due to material
       breach of this AGREEMENT by SIEMENS

       17.4.1     Subject to SIEMENS' compliance with its payment obligations
                  under Annex 5, SIEMENS, its RELATED COMPANIES and DISTRIBUTORS
                  are nevertheless entitled to continue to exercise the rights
                  described in Clause 2 in order to maintain, sell, distribute
                  and/ or otherwise trade EMBEDDED PRODUCTS, if the integration
                  of the SOFTWARE PRODUCT is effected prior to the date of
                  termination or, even after the date of termination, if the
                  sale, distribution or trade of the respective products falls
                  within the ordinary course of business of SIEMENS, its RELATED
                  COMPANIES and DISTRIBUTORS, in particular constitutes the
                  fulfillment of orders arising from existing business dealings
                  before the date of termination. However, these above stated
                  rights shall cease six months after the date of termination at
                  latest. Therefore, the termination of this AGREEMENT shall
                  under no circumstances affect any rights of an END-USER to the
                  EMBEDDED PRODUCT granted to him in accordance with Clause 2
                  and this Clause 17.4 of this AGREEMENT nor hinder an END-USER
                  from utilizing EMBEDDED PRODUCTS, if these products are traded
                  by SIEMENS, its RELATED COMPANIES and/ or DISTRIBUTORS
                  according to the terms of this AGREEMENT.

       17.4.2     RADVISION shall be obliged for a period of 24 (twenty four )
                  months after the termination of this AGREEMENT to provide on
                  the request of SIEMENS maintenance and support services at
                  such prices these services are usually provided by RADVISION
                  to customers comparable to SIEMENS at the date of termination.

       17.4.3     In the event of a material breach by SIEMENS which is not
                  remedied within 30 days after receipt by SIEMENS of a written
                  notice specifying the nature of such breach, RADVISION shall
                  have the right to immediately terminate all SIEMENS' rights
                  under Clause 17.4 by written notice.

17.5   In case of a termination for default by RADVISION including but not
       limited to breach of contract as described in Clause 17.2 and in case of
       a termination as described in Clause 17.3, RADVISION hereby grants
       SIEMENS in addition to the rights and entitlements described in Clause
       17.4 above subject to all other terms of this AGREEMENT the world-wide,
       perpetual, non-exclusive, non-transferable, irrevocable right to use,
       copy, port and modify and/or to have used, copied, modified the SOFTWARE
       PRODUCTS exclusively for the purposes of remedying of operating defects
       and/ or otherwise servicing and maintaining the SOFTWARE PRODUCTS and the
       EMBEDDED PRODUCTS, if the SOFTWARE PRODUCT is shipped to the END-USER
       according to the terms of this AGREEMENT.

17.6   SIEMENS may elect to terminate this AGREEMENT with regard to all or part
       of the maintenance and technical support and training services, or the
       respective services for one UPDATE/UPGRADE of the SOFTWARE PRODUCT at the
       end of each calendar year giving at least 30 (thirty) days prior written
       notice to RADVISION. In such case, the remainder of the AGREEMENT shall
       remain in full force and effect with respect to the other SOFTWARE
       PRODUCTS.

       Any and all obligations of the Parties with respect to CONFIDENTIAL
       INFORMATION, liability, warranty, indemnification for violation of IP
       RIGHTS, arbitration, governing law, payment due and owed at the date of
       termination shall survive expiration or termination of this AGREEMENT.

<PAGE>

       Termination of this AGREEMENT which is not due to SIEMENS' breach of
       obligations under this AGREEMENT, shall not affect any rights granted
       hereunder to SIEMENS and its RELATED COMPANIES as per Clause 2.1 to use
       the SOURCE CODE for maintaining the EMBEDDED PRODUCTS.

18     ISO STANDARDS

18.1   RADVISION is certified according to ISO 9002 and has implemented such
       standards for the performance of its obligations hereunder. Nevertheless
       SIEMENS may request alterations to quality procedures, development or
       workmanship standards in order to improve the overall SOFTWARE PRODUCT
       quality and RADVISON shall use best efforts to comply with such request.

       18.1.1     General Inspection System

       If SIEMENS so request it shall be entitled once a year to review, at
       RADVISION's premises, RADVISON's quality and inspection system.

       18.1.2     Development Site/Factory Inspection Test of SOFTWARE PRODUCTS

       If SIEMENS requests it shall be entitled once a year to perform a
       development site/factory inspection, such inspection will be performed at
       RADVISION's premises. The time, place and procedure of the development
       site/factory inspections will be agreed upon between the Parties
       reasonably in advance. All expenses accruing in connection with the
       development site/factory inspection shall be borne by RADVISON, except
       for the travel, lodging and living expenses incurred by the participants
       of SIEMENS.

19     MISCELLANEOUS

19.1   Neither Party may delegate its obligations or assign its rights hereunder
       without the prior written consent and approval of the other Party, which
       consent will not be unreasonably withheld; SIEMENS however, subject to
       prior written notice to RADVISION, may assign, delegate or transfer its
       obligations and rights hereunder to any of its RELATED COMPANIES without
       the prior written consent of RADVISION as long as such RELATED COMPANY is
       not a direct competitor of RADVISION in the field of the H 323 stack.
       SIEMENS shall notify RADVISION of the names and addresses of any such
       RELATED COMPANY to which this AGREEMENT has been assigned, delegated or
       transferred , 30 days in advance in writing. Notwithstanding the above,
       RADVISION may assign its rights and obligations hereunder to RADVISION
       Inc. or to RADVISION B.V. Notwithstanding the above, subject to Article
       17.3 above, RADVISION may assign its rights and obligations hereunder to
       a third party as a result of a M&A transaction.

19.2   This AGREEMENT may not be modified or amended except by written
       instrument, executed by the duly authorized officers of the Parties. This
       requirement may only be waived in writing.

19.3   Any provision of this AGREEMENT which may be deemed unenforceable or
       contrary to applicable mandatory law shall be disregarded in the
       performance or interpretation of this AGREEMENT, and shall not operate to
       invalidate any other portion or provision of this AGREEMENT. The Parties
       undertake to substitute such provision by a provision that to the extent
       legally possible approximates the intent and economic effect of the
       unenforceable or invalid provision.

<PAGE>

19.4   No failure or delay by either Party in exercising any right, power or
       remedy under this AGREEMENT, except as specifically provided herein, will
       operate as a waiver of any such right, power or remedy.

19.5   Each of the Parties hereby represents and warrants that it has full
       corporate power and authority to enter into this AGREEMENT without the
       consent of any other person, organization or entity, that this AGREEMENT
       represents the valid and binding AGREEMENT of the Parties enforceable in
       accordance with its terms, and that the execution of this AGREEMENT and
       the consummation of the transactions contemplated herein will not violate
       a term or condition of any AGREEMENT, contract or commitment to which
       either of them is a Party, or any order, judgment or decree by which
       either Party is bound.

       The relationship established between the Parties by this AGREEMENT is
       that of RADVISION and SIEMENS and each Party will be and act as an
       independent contractor and not as agent or partner of the other Party for
       any purpose. Nothing contained herein will in any way make a arty, or
       that Party's employees or agents into employees or agents of the other
       Party, and neither Party by virtue of this AGREEMENT shall have any
       right, power or authority to act or create any obligation, express or
       implied, on behalf of the other Party. Neither this AGREEMENT, nor any
       terms and conditions contained herein shall be construed as creating a
       partnership, a joint venture or an agency or franchising relationship.

19.6   In no event will RADVISION's total liability under this AGREEMENT
       exceed twice the amounts actually paid to RADVISION by SIEMENS under
       this AGREEMENT provided that this sum will in no event be higher than
       US $10,000,000, and except as otherwise specifically stated to the
       contrary herein in no event shall either Party be liable for indirect,
       incidental, or consequential damages. The limitations of liability in
       this AGREEMENT shall not apply if damages are caused by willful
       misconduct or gross negligence of a party hereto.

19.7   The terms and conditions set forth in this AGREEMENT constitute the
       entire agreement between RADVISION and SIEMENS concerning the subject of
       this AGREEMENT, provided that the agreements dated March 18, 1997
       (PN-agreement), May 6, 1999 (ICN WN CS agreement) and any agreements
       relating to business units other than Information and Communication
       Networks are not affected.

IN WITNESS WHEREOF, the Parties hereto have caused this AGREEMENT to be executed
in duplicate by their respective duly authorized representatives as set forth
below:

Signed for and on behalf of                 Signed for and on behalf of

RADVision Ltd.                              Siemens Aktiengesellschaft

---------------------      ---------------------          ---------------------
Signature                  Signature                      Signature

Name (print)               Name (print)                   Name (print)

Title                      Title                          Title

Date                       Date                           Date

<PAGE>

ANNEX 1

specification and criteria of the SOFTWARE PRODUCTS

SOFTWARE PRODUCTS:

1.     H.323 Protocol Stack, in a SOURCE CODE form for operating systems as
       defined in Annex 4:

       H.323 Conference Manager: Layer of abstraction that hides details of
       implementation of H.245 and H.225 from application. It also provides
       inter-protocol procedures as described in the ITU-T H.323 recommendation.

       H.225 (Q.931, RAS and RTP/RTCP): Media Stream Packetization and
       Synchronization for Visual Telephone Systems on Non Guaranteed Quality of
       Service LANs

       H.245: Control of communications between Visual Telephone Systems and
       Terminal Equipment.

       H.235: Security Framework for Signaling and Authentication, in SOURCE
       CODE form for Win 32 and Solaris.

       The SOURCE CODE version for Windows NT will be upgraded to Windows 2000
       (and all following versions) when available at no cost.

2.     H.323 Software Development Kit, in an OBJECT CODE form for the operating
       systems Windows NT (including all following versions) and Solaris for
       Sparc (Version 2.6) (including all following versions if available) and -
       if and when available - for the other operating systems as defined in
       Annex 4.

       The SDK includes two compilers: ASN.1 and PDL.

       The ASN.1 compiler compiles a sub-set of the ASN.1 syntax that is defined
       by the following ITU-T recommendations:

       X.680, X.681, X.682, X.683 which are required to support H.245, H.225 and
       H.450 must be supported.

       The PDL compiler compiles the Protocol Description Language that was
       developed by RADVISION and defines State Machines that use data
       structures defined by ASN.1.

3.     H.323 Gatekeeper, in a SOURCE CODE and OBJECT CODE form for operating
       systems Win 32 (Windows 98 and Windows NT), Solaris for Spark as of
       (12/99) Linux and VXWorks as of Q1 2000

       Gatekeeper Software Toolkit, in a SOURCE CODE form for operating systems
       Win 32 (Windows 98 and Windows NT), Solaris for Spark as of Q1 2000 Linux
       and VXWorks as of Q1 2000.

4.     H.450 /1/2/3 add-on modul to the H.323 Stack, in a SOURCE CODE form for
       Win32 and Solaris.

<PAGE>

ANNEX 2

SYSTEM DOCUMENTATION

1      STACK AND SDK DOCUMENTS

1.1    H.323 Stack - Programmer's Guide and Reference WORD
1.2    H.323 Protocol Stack - Source Documentation WORD
1.3    H.323 Stack - Porting Functions and Programmer's Guide and Reference WORD
1.4    H.323 Stack - PDK - Protocol Description Kit and Function Reference Guide
       WORD
1.5    Special Unix Guide - WORD

2      GATEKEEPER DOCUMENTS

2.1    Programmer and Reference Manual Framemaker

2.2    Sample Application Document Framemaker
2.3.   H.235 Proxy Plug-in -  Framemaker
2.4    H.450 Plug-In     Framemaker

3        H.450 DOCUMENTS

3.1    H.450 - Programmer's Guide and Reference WORD

<PAGE>

ANNEX 4

REFERENCE ENVIRONMENT

Win32 (e.g. Windows 98, Windows NT, and all following versions)
Solaris for Sparc (Version 2.6),
VxWorks,
Linux PC ( Version 2.0.3.)5

The support for following versions of the REFERENCE ENVIRONMENT shall be
provided to SIEMENS free of charge if available for the RADVISIONS' SOFTWARE
PRODUCTS, otherwise the provisions of Clause 2.7 will apply.

<PAGE>

ANNEX 5

LICENSE, MAINTENANCE FEES AND TECHNICAL SUPPORT AND TRAINING RATES

       LUMP SUM, ROYALTY AND MAINTENANCE FEES AND TECHNICAL SUPPORT AND TRAINING
       RATES

1.     LUMP SUM (AGGREGATE ONE-TIME PAYMENT FOR ALL SOFTWARE PRODUCTS) One time
Lump Sum for all SOFTWARE PRODUCTS, as defined in Annex 1, of $1,100,000.
License fee payments for the SOFTWARE PRODUCTS made prior to the EFFECTIVE DATE
will not be refunded to SIEMENS.

2.     ROYALTY FEES PER CATEGORIES

The royalty fees shall be per sold / distributed copy of the EMBEDDED PRODUCT
and dependent on the Application Category as detailed in the following table:

-------------------------------------------------------------------------------
APPLICATION            ROYALTY                            ROYALTIES:
CATEGORY:              FEE PARAMETER:

-------------------------------------------------------------------------------
CLIENT HW              Per Client                         1 US-$ per client

-------------------------------------------------------------------------------
CLIENT SW              Per Client                         0,25 US-$ per client

-------------------------------------------------------------------------------
NETWORK                Per Port                           LESS THAN 10K $6/port
                                                          10K-25K $5/port
                                                          >25K $3.5/port

-------------------------------------------------------------------------------
SERVER                 Per client                         $0.30
                       Per concurrent user                LESS THAN 25K $3/C.U.
                                                          > 25K $2.75/C.U.

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

-------------------------------------------------------------------------------
GATEKEEPER (OTHER      Per registered endpoints/clients   $ 0.4 per registered
THAN CARRIER GRADE                                        endpoint / client
GATEKEEPER)

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

CARRIER GRADE GATEKEEPER

                                                                UNITS

<TABLE>
<CAPTION>

CONCURRENT CALLS [CC]     1 - 500 OR 3 YEARS    501 - 1000 OR 4TH AND 5TH YEAR       > 1000 OR ABOVE 5 YEARS
<S>                       <C>                   <C>                                  <C>
   < 96                   1,056                 720                                  576
     97 -    256          2,816                 1,920                                1,536
    257 -    512          5,120                 3,584                                2,816
    513 -  1,024          9,216                 6,656                                5,120
  1,025 -  2,000          16,000                12,000                               9,000
  2,001 -  5,000          US $ 7/CC             US$ 5.5/CC                           US$4.25/CC
 5001-10000               US $ 6/CC             US$ 5/CC                             US$ 4/CC
 >10000                   US$ 5/CC              US$ 4/CC                             US$ 4/CC

</TABLE>

The royalty fees shall be dependent on the # of units and the # of concurrent
calls that a unit can handle.
Unit shall be defined as the applicable HW/SW - End User configuration where the
Gatekeeper functionality is Installed.
The # of units shall be counted for the duration of the AGREEMENT.
Starting with 4th year after the EFFECTIVE DATE, the royalties in column
(501 - 1,000 Units) shall apply

<PAGE>

regardless of the number of units sold/distributed in the first three years.
Starting with 6th year after the EFFECTIVE DATE, the royalties in column
(>1,000 Units) shall apply regardless of the number of units sold/distributed in
the first five years.
The # of units shall be counted for the duration of the AGREEMENT.

 .

3.       MAINTENANCE FEES (ANNUAL FEES PER SIEMENS SUPPORT CENTER)
SIEMENS agrees to pay to RADVISION, each year during the maintenance term, the
following nonrefundable (subject to the provisions of the AGREEMENT) SOFTWARE
PRODUCT annual maintenance and support fees:

Annual Maintenance Fee per support enter: $100,000

Minimal Annual amount  $ 300,000  (for minimum  3 supported support centers)

SIEMENS is free how to organize its support centers. Without limitation there
are no restrictions regarding locations or products.

4.       RATES FOR ADDITIONAL TECHNICAL SUPPORT

Additional technical support fee provided at RADVISION premises $100 per hour.

Additional technical support fee for On Site $1,000 per day not inclusive of
travelling and accommodation expenses to be covered by SIEMENS

5.       RATES FOR ADDITIONAL TRAINING

Additional training fee: $2,000 per day for a group of up to twenty-five persons
not inclusive of travelling and accommodation expenses to be covered by SIEMENS

<PAGE>

ANNEX 6

MAINTENANCE PROVISIONS

             Maintenance services for the SOFTWARE PRODUCTS include:

* Maintenance releases including BUG FIXES, UPDATES, and certain UPGRADES which
RADVISION has expressly agreed to provide as part of the SOFTWARE PRODUCTS
maintenance and support services.
* Telephone support. during working hours (Sunday- Thursday , 9:00-18:00; Israel
Time); RADVISION's services hereunder shall not extend to any SOFTWARE PRODUCT
or components thereof which have been subject to misuse, accident or improper
installation or maintenance.

The guidelines for handling bug reports and fixing of SOFTWARE PRODUCTS errors
shall be handled as follows:

Upon RADVISION's receipt of an error report and verification of the error in the
form of the unmodified SOURCE CODE form of the SOFTWARE PRODUCT from SIEMENS,
the source code of the SIEMENS software that caused the problem, and detailed
log file generated by the SOFTWARE PRODUCT, and provided that the error can be
reproduced at RADVISION's premises in Israel, RADVISION shall promptly do best
efforts to take the corrective action so as to remedy the reported problems
within the following time schedule:

<TABLE>
<CAPTION>

CLASSIFICATION                 REMEDY LEVEL 1                   REMEDY LEVEL 2                REMEDY LEVEL 3
--------------                 --------------                   --------------                --------------
<S>                            <C>                              <C>                           <C>
Fatal                          6 business hours (in Israel)     7 business days (in Israel)   Within 60 days**
Severe Impact                  12 business hours (in Israel)    14 business days (in Israel)  70 days**
Degraded Operations            24 business hours(in Israel)     30 days**                     100 days**
Minimal Impact                 24 business hours (in Israel)    60 days**                     150 days**

</TABLE>

The bugs/errors are classified by RADVISION and are as follows:

CLASSIFICATION:

Fatal:                Errors preventing all useful work from being done
Severe Impact:        Errors which disable major functions from being performed.
Degraded Operations:  Errors disabling only certain nonessential functions.
Minimal Impact:       All other errors.

REMEDY LEVEL:

First Level Acknowledgment of receipt of error report with written confirmation
delivered to "SIEMENS" during the next business day.
Second Level Patch or work around, temporary fix, or update or major release,
including applicable SYSTEM DOCUMENTATION changes.
Third Level Official fix, update or major release, including applicable SYSTEM
DOCUMENTATION changes.

* If received on a business day during the hours of Monday-Friday, 8:00 AM -
5:00 PM; Israel Time

<PAGE>

** A day is defined as a 24 hour period, regardless of whether work is scheduled
during that period. It is intended that RADVISION and SIEMENS will work within
the framework of these guidelines. In the event that an exceptional circumstance
arises, the Parties will discuss the circumstances and mutually agree on the
correct course of action to take. Exceptions may include but are not limited to
the impossibility of SIEMENS to perform, the severity of the error, or the
availability of a more efficient approach.

MAINTENANCE AND SUPPORT SERVICES. Maintenance and support services to be
provided by RADVISION to SIEMENS during the maintenance term are as follows:

SOURCE CODE UPDATES, including OBJECT CODE, solely as follows:

UPDATES, as, when, and if available within the maintenance term, to the Call
Control program (which includes functionality defined in H.225 and H.245) and
the Gatekeeper SOFTWARE PRODUCT to reflect changes in the ITU Recommendation for
H.323.

OBJECT CODE UPDATES for those SOFTWARE PRODUCT, initially delivered by RADVISION
(per Annex 1), in OBJECT CODE form;

SOURCE CODE UPDATES for those SOFTWARE PRODUCTS, initially delivered by
RADVISION (per Annex 1), in SOURCE CODE and OBJECT CODE form; and telephone
support. Support may also be provided via facsimile, electronic mail, and/or
RADVISION's Worldwide Web site.

Note: Unless otherwise indicated, RADVISION shall provide to SIEMENS only three
(3) copies per release of an UPDATE.

SIEMENS will appoint a technical program manager or technical liaison who will
be responsible for coordinating technical interaction between the Parties.

<PAGE>

ANNEX 7

EXPORT CONTROL DATA

Product number:
Short description:

1.       Is the product subject to US export control regulations?

         YES: / /   NO:   / /

         If yes: Please give Export Control Classification Number (ECCN):

         ____________________

         Is it a "classified product" or does it contain parts which are on the
         US Munitions List of the "US Department of State (Office of Defense
         Trade Controls)"?

         YES: / /   NO: / /

2.       Is the product subject to your national export control regulations?

         YES: / /   NO: / /

         If yes: Please give Export Control Classification Number (ECCN):

         ___________________

3.       Please supply the Harmonized Tariff System Number (HTS) or standard
         international trade classification

         NUMBER: ______________

4.       Does the product originate from the European Union according to EU
         Council Directive 3351/83?

         YES: / /   NO: / /

5.       Please give weight of the product without packaging and shipping crate
         in gram:

         WEIGHT IN GRAM:

         ______________

6.       Please name country of origin :

         ________________________________
         (If there are various countries of origin, please list each single part
         no. and its country of origin.)

RADVISION LTD.

DATE:    _________________________

BY:      _________________________

TITLE:   _________________________

<PAGE>

ANNEX 8:          LIST OF SUB-CONTRACTORS

                                   [None]<PAGE>

                                                                 EXHIBIT 10.21

                        STANDARD OFFICE LEASE -- GROSS

                AMERICAN INDUSTRIAL REAL ESTATE ASSOCIATION

1.   BASIC LEASE PROVISIONS ("Basic Lease Provisions")

     1.1   PARTIES:  This Lease, dated, for reference purposes only, May 10,
1999, is made by and between TESH PARTNERS, L.P., (herein called "Lessor")
and SCHEID VINEYARDS CALIFORNIA INC., doing business under the name of SAME,
(herein called "Lessee").

     1.2   PREMISES:  Suite Number(s) 300, 301*, 2 floors, consisting of
approximately 6,436 feet, more or less, as defined in paragraph 2 and as
shown on Exhibit "A" hereto (the "Premises").

           *Premises shall also include a storage room located on the first
            floor of the building adjacent to the electrical room.

     1.3   BUILDING:  Commonly described as being located at 13470 Washington
Boulevard, in the City of Marina Del Rey, County of Los Angeles, State of
California, as more particularly described in Exhibit N/A hereto, and as
defined in paragraph 2.

     1.4   USE:  General Office, subject to paragraph 6.

     1.5   TERM:  Five (5) year commencing July 1, 1999 ("Commencement Date")
and ending June 30, 2004, as defined in paragraph 3.

     1.6   BASE RENT: _________ per month, payable on the 1st day of each
month, per paragraph 4.1.

     1.7   BASE RENT INCREASE:  On NONE the monthly Base Rent payable under
paragraph 1.6 above shall be adjusted as provided in paragraph 4.3 below.

     1.8   RENT PAID UPON EXECUTION:  Nineteen Thousand Eight Hundred
Ninety-Four ($19,894) Dollars for $9,947 First Month's Rent, $9,947 Security
Deposit.

     1.9.  SECURITY DEPOSIT:  Nine Thousand Nine Hundred Forty-Seven ($9,947)
Dollars.

     1.10. LESSEE'S SHARE OF OPERATING EXPENSE INCREASE:  53.333% as defined
in paragraph 4.2.

2.   PREMISES, PARKING AND COMMON AREAS.

     2.1   PREMISES:  The Premises are a portion of a building, herein
sometimes referred to as the "Building" identified in paragraph 1.3 of the
Basic Lease Provisions. "Building" shall include adjacent parking structures
used in connection therewith. The Premises, the Building, the Common Areas,
the land upon which the same are located, along with all other buildings and
improvements thereon or thereunder, are herein collectively referred to as
the "Office Building Project." Lessor hereby leases to Lessee and Lessee
leases from Lessor for the term, at the rental, and upon all of the
conditions set forth herein, the real property referred to in the Basic Lease
Provisions, paragraph 1.2, as the "Premises", including rights to the Common
Areas as hereinafter specified.

     2.2   VEHICLE PARKING:  So long as Lessee is not in default, and subject
to the rules and regulations attached hereto, and as established by Lessor
from time to time, Lessee shall be entitled to rent and use 10 parking spaces
in the Office Building Project at the monthly rate applicable from time to
time for monthly parking as set by Lessor and/or its licensee.

           2.2.1  If Lessee commits, permits or allows any of the prohibited
activities described in the Lease or the rules then in effect, then Lessor
shall have the right, without notice, in addition to such other rights and
remedies that it may have, to remove or tow away the vehicle involved and
charge the cost to Lessee, which cost shall be immediately payable upon
demand by Lessor.

           2.2.2  The monthly parking rate per parking space will be $40 per
month at the commencement of the term of this Lease, and is subject to change
upon five (5) days prior written notice to Lessee. Monthly parking fees shall
be payable one month in advance prior to the first day of each calendar month.

     2.3   COMMON AREAS - DEFINITION. The term "Common Areas" is defined as
all areas and facilities outside the Premises and within the exterior
boundary line of the Office Building Project that are provided and designated
by the Lessor from time to time for the general non-exclusive use of Lessor,
Lessee and of other lessees of the Office Building Project and their
respective employees, suppliers, shippers, customers and invitees, including
but not limited to common entrances, lobbies, corridors, stairways and
stairwells, public restrooms, elevators, escalators, parking areas to the
extent not otherwise prohibited by this Lease, loading and unloading areas,
trash areas, roadways, sidewalks, walkways, parkways, ramps, driveways,
landscaped areas and decorative walls.

     2.4   COMMON AREAS - RULES AND REGULATIONS.  Lessee agrees to abide by
and conform to the rules and regulations attached hereto as Exhibit B with
respect to the Office Building Project and Common Areas, and to cause its
employees, suppliers, shippers, customers, and invitees to so abide and
conform. Lessor or such other person(s) as Lessor may appoint shall have the
exclusive control and management of the Common Areas and shall have the
right, from time to time, to modify, amend and enforce said rules and
regulations. Lessor shall not be responsible to Lessee for the non-compliance
with said rules and regulations by other lessees, their agents, employees and
invitees of the Office Building Project.

     2.5   COMMON AREAS - CHANGES.  Lessor shall have the right, in Lessor's
sole discretion, from time to time:

           (a)  To make changes to the Building interior and exterior and
Common Areas, including, without limitation, changes in the location, size,
shape, number, and appearance thereof, including but not limited to the
lobbies, windows, stairways, air shafts, elevators, escalators, restrooms,
driveways, entrances, parking spaces, parking areas, loading and unloading
areas, ingress, egress, direction of traffic, decorative walls, landscaped
areas and walkways; provided, however, Lessor shall at all times provide the
parking facilities required by applicable law;

           (b)  To close temporarily any of the Common Areas for maintenance
purposes so long as reasonable access to the Premises remains available;

           (c)  To designate other land and improvements outside the
boundaries of the Office Building Project to be a part of the Common Areas,
provided that such other land and improvements have a reasonable and
functional relationship to the Office Building Project;

           (d)  To add additional buildings and improvements to the Common
Areas;

           (e)  To use the Common Areas while engaged in making additional
improvements, repairs or alterations to the Office Building Project, or any
portion thereof;

           (f)  To do and perform such other acts and make such other changes
in, to or with respect to the Common Areas and Office Building Project as
Lessor may, in the exercise of sound business judgment deem to be appropriate.

3.   TERM.

     3.1  TERM.  The term and Commencement Date of this Lease shall be as
specified in paragraph 1.5 of the Basic Lease Provisions.

     3.2  DELAY IN POSSESSION.  Notwithstanding said Commencement Date, if
for any reason Lessor cannot deliver possession of the Premises to Lessee on
said date and subject to paragraph 3.2.2, Lessor shall not be subject to any
liability therefor, nor shall such failure affect the validity of this Lease
or the obligations of Lessee hereunder or extend the term thereof, but in
such case, Lessee shall not be obligated to pay rent or perform any other
obligation of

                                PAGE 1 OF 12
<PAGE>

Lessee under the terms of this Lease, except as may be otherwise provided in
this Lease, until possession of the Premises is tendered to Lessee, as
hereinafter defined; provided, however, that if Lessor shall not have
delivered possession of the Premises within sixty (60) days following said
Commencement Date, as the same may be extended under the terms of a Work
Letter executed by Lessor and Lessee, Lessee may, at Lessee's option, by
notice in writing to Lessor within ten (10) days thereafter, cancel this
Lease, in which event the parties shall be discharged from all obligations
hereunder; provided, however, that, as to Lessee's obligations, Lessee first
reimburses Lessor for all costs incurred for Non-Standard Improvements and, as
to Lessor's obligations, Lessor shall return any money previously deposited
by Lessee (less any offsets due Lessor for Non-Standard Improvements); and
provided further, that if such written notice by Lessee is not received by
Lessor within said ten (10) day period, Lessee's right to cancel this Lease
hereunder shall terminate and be of no further force or effect.

          3.2.1  POSSESSION TENDERED - DEFINED.  Possession of the Premises
shall be deemed tendered to Lessee ("Tender of Possession") when (1) the
improvements to be provided by Lessor under this Lease are substantially
completed, (2) the Building utilities are ready for use in the Premises, (3)
Leases has reasonable access to the Premises, and (4) ten (10) days shall
have expired following advance written notice to Lessee of the occurrence of
the matters described in (1), (2) and (3), above of this paragraph 3.2.1.

          3.2.2  DELAYS CAUSED BY LESSEE.  There shall be no abatement of
rent, and the sixty (60) days period following the Commencement Date before
which Lessee's right to cancel this Lease accrues under paragraph 3.2, shall
be deemed extended to the extent of any delays caused by acts or omissions of
Lessee, Lessee's agents, employees and contractors.

     3.3  EARLY POSSESSION.  If Lessee occupies the Premises prior to said
Commencement Date, such occupancy shall be subject to all provisions of this
Lease, such occupancy shall not change the termination date, and Lessee shall
pay rent for such occupancy.

     3.4  UNCERTAIN COMMENCEMENT.  In the event commencement of the Lease
term is defined as the completion of the improvements, Lessee and Lessor shall
execute an amendment to this Lease establishing the date of Tender of
Possession (as defined in paragraph 3.2.1) or the actual taking of possession
by Lessee, whichever first occurs, as the Commencement Date.

4.   RENT.

     4.1  BASE RENT.  Subject to adjustment as hereinafter provided in
paragraph 4.3, and except as may be otherwise expressly provided in this
Lease, Lessee shall pay to Lessor the Base Rent for the Premises set forth in
paragraph 1.6 of the Basic Lease Provisions, without offset or deduction.
Lessee shall pay Lessor upon execution hereof the advance Base Rent described
in paragraph 1.8 of the Basic Lease Provisions. Rent for any period during
the term hereof which is for less than one month shall be prorated based upon
the actual number of days of the calendar month involved. Rent shall be
payable in lawful money of the United States to Lessor at the address stated
herein or to such other persons or at such other places as Lessor may
designate in writing.

     4.2  DELETED.

     4.3  RENT INCREASES.

          4.3.1  At the times set forth in paragraph 1.7 of the Basic Lease
Provisions, the monthly Base Rent payable under paragraph 4.1 of this Lease
shall be adjusted by the increase, if any, in the Consumer Price Index of the
Bureau of Labor Statistics of the Department of Labor for All Urban
Consumers, (1967=100), "All Items," for the city nearest the location of the
Building, herein referred to as "C.P.I.," since the date of this Lease.

          4.3.2  The monthly Base Rent payable pursuant to paragraph 4.3.1
shall be calculated as follows: the Base Rent payable for the first month of
the term of this Lease, as set forth in paragraph 4.1 of this Lease, shall be
multiplied by a fraction the numerator of which shall be the C.P.I. of the
calendar

                                PAGE 2 OF 12
<PAGE>

month during which the adjustment is to take effect, and the denominator of
which shall be the C.P.I. for the calendar month in which the original Lease
term commences. The sum so calculated shall constitute the new monthly Base
Rent hereunder, but, in no event, shall such new monthly Base Rent be less
than the Base Rent payable for the month immediately preceding the date for
the rent adjustment.

     4.3.3  In the event the compilation and/or publication of the C.P.I.
shall be transferred to any other governmental department or bureau or agency
or shall be discontinued, then the index most nearly the same as the C.P.I.
shall be used to make such calculations. In the event that Lessor and Lessee
cannot agree on such alternative index, then the matter shall be submitted
for decision to the American Arbitration Association in the county in which
the Premises are located, in accordance with the then rules of said
association and the decision of the arbitrators shall be binding upon the
parties, notwithstanding one party failing to appear after due notice of the
proceeding. The cost of said arbitrators shall be paid equally by Lessor and
Lessee.

     4.3.4  Lessee shall continue to pay the rent at the rate previously in
effect until the increase, if any, is determined. Within five (5) days
following the date on which the increase is determined, Lessee shall make
such payment to Lessor as will bring the increased rental current, commencing
with the effective date of such increase through the date of any rental
instalments then due. Thereafter the rental shall be paid at the increased
rate.

     4.3.5  At such time as the amount of any change in the rental required
by this Lease is known or determined, Lessor and Lessee shall execute an
amendment to this Lease setting forth such change.

5.   SECURITY DEPOSIT.  Lessee shall deposit with Lessor upon execution hereof
the security deposit set forth in paragraph 1.9 of the Basic Lease Provisions
as security for Lessee's faithful performance of Lessee's obligations
hereunder. If Lessee fails to pay rent or other charges due hereunder, or
otherwise defaults with respect to any provision of this Lease, Lessor may
use, apply, or retain all or any portion of said deposit for the payment of
any rent or other charge in default for the payment of any other sum to which
Lessor may become obligated by reason of Lessee's default, or to compensate
Lessor for any loss or damage which Lessor may suffer thereby. If Lessor so
uses or applies all or any portion of said deposit, Lessee shall within ten
(10) days after written demand therefor deposit cash with Lessor in an amount
sufficient to restore said deposit to the full amount then required of
Lessee. If the monthly Base Rent shall, from time to time, increase
during the term of this Lease, Lessee shall, at the time of such increase,
deposit with Lessor additional money as a security deposit so that the total
amount of the security deposit held by Lessor shall at all times bear the
same proportion to the then current Base Rent as the initial security
deposit bears to the initial Base Rent set forth in paragraph 1.6 of the
Basic Lease Provisions. Lessor shall not be required to keep said security
deposit separate from its general accounts. If Lessee performs all of
Lessee's obligations hereunder, said deposit, or so much thereof as has not
heretofore been applied by Lessor, shall be returned, without payment of
interest or other increment for its use, to Lessee (or, at Lessor's option,
to the last assignee, if any, of Lessee's interest hereunder) at the
expiration of the term hereof, and after Lessee has vacated the Premises. No
trust relationship is created herein between Lessor and Lessee with respect
to said Security Deposit.

6.   USE.

     6.1  USE.  The Premises shall be used and occupied only for the purpose
set forth in paragraph 1.4 of the Basic Lease Provisions or any other use
which is reasonably comparable to that use and for other purpose.

     6.2  COMPLIANCE WITH LAW.

     (a)  Lessee shall, at Lessee's expense, promptly comply with all
applicable statutes, ordinances, rules, regulations, orders, covenants and
restrictions of record, and requirements of any fire insurance underwriters
of rating bureaus, now in effect or which may hereafter come into effect,
whether or not they reflect a change in policy from that now existing, during
the term or any part of the term hereof, relating in any manner to the
Premises and the occupation and use by Lessee of the Premises. Lessee shall
conduct its business in a lawful manner and shall not use or permit the use
of the Premises or the Common Areas in any manner that will tend to create
waste or a nuisance or shall tend to disturb other occupants of the Office
Building Project.

     6.3  CONDITION OF PREMISES.

          (a)  Lessor shall deliver the Premises to Lessee in a clean
condition on the Lease Commencement Date (unless Lessee is already in
possession) and that the plumbing, lighting, air conditioning, and heating
system in the Premises shall be in good operating condition. In the event
that it is determined that this provision has been violated, then it shall be
the obligation of Lessor, after receipt of written notice from Lessee setting
forth with specificity the nature of the violation, to promptly, at Lessor's
sole cost, rectify such violation.

          (b)  Except as otherwise provided in this Lease, Lessee hereby
accepts the Premises and the Office Building Project in their condition
existing as of the Lease Commencement Date or the date that Lessee takes
possession of the Premises, whichever is earlier, subject to all applicable
zoning, municipal, county and state laws, ordinances and regulations
governing and regulating the use of the Premises, and any easements,
covenants or restrictions of record, and accepts this Lease subject thereto
and to all matters disclosed thereby and by any exhibits attached hereto.
Lessee acknowledges that it has satisfied itself by its own independent
investigation that the Premises are suitable for its intended use, and that
neither Lessor nor Lessor's agent or agents has made any representation or
warranty as to the present or future suitability of the Premises, Common
Areas, or Office Building Project for the conduct of Lessee's business.

7.   MAINTENANCE, REPAIRS, ALTERATIONS AND COMMON AREA SERVICES.

     7.1  LESSOR'S OBLIGATIONS.  Lessor shall keep the Office Building
Project, including the Premises, interior and exterior walls, roof, and
common areas, and the equipment whether used exclusively for the Premises or
in common with other premises, in good condition and repair; provided,
however, Lessor shall not be obligated to paint, repair or replace wall
coverings, or to repair or replace any improvements that are not ordinarily a
part of the Building or are above then Building standards. Except as provided
in paragraph 9.5, there shall be no abatement of rent or liability of Lessee
on account of any injury or interference with Lessee's business with respect
to any improvements, alterations or repairs made by Lessor to the Office
Building Project or any part thereof. Lessee expressly waives the benefits of
any statute now or hereafter in effect which would otherwise afford Lessee
the right to make repairs at Lessor's expense of to terminate this Lease
because of Lessor's failure to keep the Premises in good order, condition and
repair.

     7.2  LESSEE'S OBLIGATIONS.

          (a)  Notwithstanding Lessor's obligation to keep the Premises in
good condition and repair, Lessee shall be responsible for payment of the
cost thereof to Lessor as additional rent for that portion of the cost of any
maintenance and repair of the Premises, or any equipment (wherever located)
that serves only Lessee or the Premises, to the extent such cost is
attributable to causes beyond normal wear and tear. Lessee shall be
responsible for the cost of painting, repairing or replacing wall coverings,
and to repair or replace any Premises improvements that are not ordinarily a
part of the Building or that are above then Building standards. Lessor may,
at its option, upon reasonable notice, elect to have Lessee perform any
particular such maintenance or repairs the cost of which is otherwise
Lessee's responsibility hereunder.

          (b)  On the last day of the term hereof, or on any sooner
termination, Lessee shall surrender the Premises to Lessor in the same
condition as received, ordinary wear and tear excepted, clean and free of
debris. Any damage or deterioration of the Premises shall not be deemed
ordinary wear and tear if the same could have been prevented by good
maintenance practices by Lessee.  Lessee shall repair any damage to the
Premises occasioned by the installation or removal of Lessee's trade
fixtures, alterations, furnishings and equipment. Except as otherwise stated
in this Lease, Lessee shall leave the air lines, power panels, electrical
distribution systems, lightening fixtures, air conditioning, window
coverings, wall coverings, carpets, wall panelling, ceilings and plumbing on
the Premises and in good operating condition.

     7.3  ALTERATIONS AND ADDITIONS.

          (a)  Lessee shall not, without Lessor's prior written consent make
any alterations, improvements, additions, Utility Installations or repairs
in, on or about the Premises, or the Office Building Project. As used in this
paragraph 7.3 the term "Utility Installation" shall mean carpeting, window
and wall coverings, power panels, electrical distribution systems, lighting
fixtures, air conditioning, plumbing, and telephone and telecommunication
wiring and equipment. At the expiration of the term, Lessor may require the
removal of any or all of said alterations, improvements, additions or Utility
Installations, and the restoration of the Premises and the Office Building
Project to their prior condition, at Lessee's expense. Should Lessor permit
Lessee to make its own alterations, improvements, additions, or Utility
Installations, Lessee shall use only such contractor as has been expressly
approved by Lessor, and Lessor may

                               Page 3 of 12

<PAGE>

require Lessee to provide Lessor, at Lessee's sole cost and expense, a lien
and completion bond in an amount equal to one and one-half times the
estimated cost of such improvements, to insure Lessor against any liability
for mechanic's and materialmen's liens and to insure completion of the work.
Should Lessee make any alterations, improvements, additions or Utility
Installations without the prior approval of Lessor, or use a contractor not
expressly approved by Lessor, Lessor may, at any time during the term of this
Lease, require that Lessee remove any part or all of the same.

          (b)  Any alterations, improvements, additions or Utility
Installations in or about the Premises or the Office Building Project that
Lessee shall desire to make shall be presented to Lessor in written form,
with proposed detailed plans. If Lessor shall give its consent to Lessee's
making such alteration, improvement, addition or Utility Installation, the
consent shall be deemed conditioned upon Lessee acquiring a permit to do so
from the applicable governmental agencies, furnishing a copy thereof to
Lessor prior to the commencement of the work, and compliance by Lessee with
all conditions of said permit in a prompt and expeditious manner.

          (c)  Lessee shall pay, when due, all claims for labor or materials
furnished or alleged to have been furnished to or for Lessee at or for use in
the Premises, which claims are or may be secured by any mechanic's or
materialmen's lien against the Premises, the Building or the Office Building
Project, or any interest therein.

          (d)  Lessee shall give Lessor not less than ten (10) days' notice
prior to the commencement of any work in the Premises by Lessee, and Lessor
shall have the right to post notices of non-responsibility in or on the
Premises or the Building as provided by law. If Lessee shall, in good faith,
contest the validity of any such lien, claim or demand, then Lessee shall, at
its sole expense defend itself and Lessor against the same and shall pay and
satisfy any such adverse judgment that may be rendered thereon before the
enforcement thereof against the Lessor or the Premises, the Building or the
Office Building Project, upon the condition that if Lessor shall require,
Lessee shall furnish to Lessor a surety bond satisfactory to Lessor in an
amount equal to such contested lien claim or demand indemnifying Lessor
against liability for the same and holding the Premises, the Building and the
Office Building Project free from the effect of such lien or claim. In
addition, Lessor may require Lessee to pay Lessor's reasonable attorneys fees
and costs in participating in such action if Lessor shall decide it is to
Lessor's best interest so to do.

          (e)  All alterations, improvements, additions and Utility
Installations (whether or not such Utility Installations constitute trade
fixtures of Lessee) which may be made to the Premises by Lessee, including
but not limited to, floor coverings, panelings, doors, drapes, built-ins,
moldings, sound attenuation and lighting and telephone or communication
systems, conduit, wiring and outlets, shall be made and done in a good and
workmanlike manner and of good and sufficient quality and materials and shall
be the property of Lessor and remain upon and be surrendered with the
Premises at the expiration of the Lease term, unless Lessor requires their
removal pursuant to paragraph 7.3(a). Provided Lessee is not in default,
notwithstanding the provisions of this paragraph 7.3(e), Lessee's personal
property and equipment, other than that which is affixed to the Premises so
that it cannot be removed without material damage to the Premises or the
Building, and other than Utility Installations, shall remain the property of
Lessee and may be removed by Lessee subject to the provisions of paragraph 7.2

          (f)  Lessee shall provide Lessor with as-built plans and
specifications for any alterations, improvements, additions or Utility
Installations.

     7.4  UTILITY ADDITIONS.  Lessor reserves the right to install new or
additional utility facilities throughout the Office Building Project for the
benefit of Lessor or Lessee, or any other lessee of the Office Building
Project, including, but not by way of limitation, such utilities as plumbing,
electrical systems, communication systems, and fire protection and detection
systems, so long as such installations do not unreasonably interfere with
Lessee's use of the Premises.

8.  INSURANCE; INDEMNITY.

     8.1  LIABILITY INSURANCE - LESSEE.  Lessee shall, at Lessee's expense,
obtain and keep in force during the term of this Lease a policy of
Comprehensive General Liability insurance utilizing an Insurance Services
Office standard form with Broad Form General Liability Endorsement (GL0404),
or equivalent, in an amount of not less than $1,000,000 per occurrence of
bodily injury and property damage combined or in a greater amount as
reasonably determined by Lessor and shall insure Lessee with Lessor as an
additional insured against liability arising out of the use, occupancy or
maintenance of the premises. Compliance with the above requirement shall not,
however, limit the liability of Lessee hereunder.

     8.2  LIABILITY INSURANCE - LESSOR.  Lessor shall obtain and keep in
force during the term of this Lease a policy of Combined Single Limit Bodily
Injury and Broad Form Property Damage Insurance, plus coverage against such
other risks Lessor deems advisable from time to time, insuring Lessor, but
not Lessee, against liability arising out of the ownership, use, occupancy or
maintenance of the Office Building Project in an amount not less than
$5,000,000.00 per occurrence.

     8.3  PROPERTY INSURANCE - LESSEE.  Lessee shall at Lessee's expense,
obtain and keep in force during the term of this Lease for the benefit of
Lessee, replacement cost fire and extended coverage insurance, with vandalism
and malicious mischief, sprinkler leakage and earthquake sprinkler leakage
endorsements, in an amount sufficient to cover not less than 100% of the full
replacement cost, as the same may exist from time to time, of all of Lessee's
personal property, fixtures, equipment and tenant improvements.

     8.4 PROPERTY INSURANCE - LESSOR. Lessor shall not obtain and keep in
force during the term of this Lease a policy or policies of insurance
covering loss or damage to the Office Building Project improvements, but not
Lessee's personal property, fixtures, equipment or tenant improvements, in
the amount of the full replacement cost thereof, as the same may exist from
time to time, utilizing Insurance Services Office standard form, or
equivalent, providing protection against all perils included within the
classification of fire, extended coverage, vandalism, malicious mischief,
plate glass, and such other perils as Lessor deems advisable or may be required
by a lender having a lien on the Office Building Project. In addition, Lessor
shall obtain and keep in force, during the term of this Lease, a policy of
rental value insurance covering a period of one year, with loss payable to
Lessor, which insurance shall also cover all Operating Expenses for said
period. Lessee will not be named in any such policies carried by Lessor and
shall have no right to any proceeds therefrom. The policies required by these
paragraphs 8.2 and 8.4 shall contain such deductibles as Lessor or the
aforesaid lender may determine. In the event that the Premises shall suffer
an insured loss as defined in paragraph 9.1(f) hereof, the deductible amounts
under the applicable insurance policies shall be deemed an Operating Expense.
Lessee shall not do or permit to be done anything which shall invalidate the
insurance policies carried by Lessor. Lessee shall pay the entirety of any
increase in the property insurance premium for the Office Building Project
over what it was immediately prior to the commencement of the term of this
Lease if the increase is specified by Lessor's insurance carrier as being
caused by the nature of Lessee's occupancy or any act or omission of Lessee.

     8.5  INSURANCE POLICIES.  Lessee shall deliver to Lessor copies of
liability insurance policies required under paragraph 8.1 or certificates
evidencing the existence and amounts of such insurance within seven (7) days
after the Commencement Date of this Lease. No such policy shall be cancelable
or subject to reduction of coverage or other modification except after thirty
(30) days prior to written notice to Lessor. Lessee shall, at least thirty
(30) days prior to the expiration of such policies, furnish Lessor with
renewals thereof thereof.

     8.6  WAIVER OF SUBROGATION.  Lessee and Lessor each hereby release and
relieve the other, and waive their entire right of recovery against the other
for direct or consequential loss or damage arising out of or incident to the
perils covered by property insurance carried by such party, whether due to
the negligence of Lessor or Lessee or their agents, employees, contractors
and/or invitees. If necessary all property insurance policies required under
this Lease shall be endorsed to so provide.

     8.7  INDEMNITY.  Lessee shall indemnify and hold harmless Lessor and its
agents, Lessor's master or ground lessor, partners and lenders, from and
against any and all claims for damage to the person or property of anyone or
any entity arising from Lessee's use of the Office Building Project, or from
the conduct of Lessee's business or from any activity, work or things done,
permitted or suffered by Lessee in or about the Premises or elsewhere and
shall further indemnify and hold harmless Lessor from and against any and all
claims, costs and expenses arising from any breach or default in the
performance of any obligation on Lessee's part to be performed under the
terms of this Lease, or arising from any act or omission of Lessee, or any of
Lessee's agents, contractors, employees or invitees, and from and against all
costs, attorney's fees, expenses and liabilities incurred by Lessor as the
result of any such use, conduct, activity, work, things done, permitted or
suffered, breach, default or negligence, and in dealing reasonably therewith,
including but not limited to the defense or pursuit of any claim or any
action or proceeding involved therein; and in case any action or proceeding
be brought against Lessor by reason of any such matter, Lessee upon notice
from Lessor shall defend the same at Lessee's expense by counsel reasonably
satisfactory to Lessor and Lessor shall cooperate with Lessee in such
defense. Lessor need not have first paid any such claim in order to be so
indemnified. Lessee, as a material part of the consideration to Lessor,
hereby assumes all risk of damage to property of Lessee or injury to persons,
in, upon or about the Office Building Project arising from any cause and
Lessee hereby waives all claims in respect thereof against Lessor.

     8.8  EXEMPTION OF LESSOR FROM LIABILITY.  Lessee hereby agrees that
Lessor shall not be liable for injury to Lessee's business or any loss of
income therefrom or for loss of or damage to the goods, wares, merchandise or
other property of Lessee, Lessee's employees, invitees, customers, or any
other person in or about the Premises of the Office Building Project, nor
shall Lessor be liable for injury to the person of Lessee, Lessee's
employees, agents or contractors, whether such damage or injury is caused by
or results from theft, fire, steam, electricity, gas, water or rain, or from
the breakage, leakage, obstruction or other defects of pipes, sprinklers,
wires, appliances, plumbing, air conditioning or lighting fixtures, or from
any other cause, whether said

                                  PAGE 4 OF 12
<PAGE>

damage or injury results from conditions arising upon the Premises or upon
other portions of the Office Building Project, or from other sources or
places, or from new construction or the repair, alteration or improvement of
any part of the Office Building Project, or of the equipment, fixtures or
appurtenances applicable thereto, and regardless of whether the cause of such
damage or injury or the means of repairing the same is inaccessible, Lessor
shall not be liable for any damages arising from any act or neglect of any
other lessee, occupant or user of the Office Building Project, nor from the
failure of Lessor to enforce the provisions of any other lease of any other
lessee of the Office Building Project.

     8.9  NO REPRESENTATION OF ADEQUATE COVERAGE. Lessor makes no
representation that the limits or forms of coverage of insurance specified in
this paragraph 8 are adequate to cover Lessee's property or obligations under
this Lease. Lessor's obligation to insure under this paragraph 8 may be
satisfied by blanket coverage of self-insurance.

9.   DAMAGE OR DESTRUCTION.

     9.1  DEFINITIONS.

          (a)  "Premises Damage" shall mean if the Premises are damaged or
destroyed to any extent.

          (b)  "Premises Building Partial Damage" shall mean if the Building
of which the Premises are a part is damaged or destroyed to the extent that
the cost to repair is less than fifty percent (50%) of the then Replacement
Cost of the Building.

          (c)   "Premises Building Total Destruction" shall mean if the
Building of which the Premises are a part is damaged or destroyed to the
extent that the cost to repair is fifty percent (50%) or more of the then
Replacement Cost of the Building.

          (d)  "Office Building Project Buildings" shall mean all of the
buildings on the Office Building Project site.

          (e)  "Office Building Project Buildings Total Destruction" shall
mean if the Office Building Project Buildings are damaged or destroyed to the
extent that the cost to repair is fifty percent (50%) or more of the then
Replacement Cost of the Office Building Project Buildings.

          (f)  "Insured Loss" shall mean damage or destruction which was
caused by an event required to be covered by the insurance described in
paragraph 8. The fact that an Insured Loss has a deductible amount shall not
make the loss an uninsured loss.

          (g)  "Replacement Cost" shall mean the amount of money necessary to
be spent in order to repair or rebuild the damaged area to the condition that
existed immediately prior to the damage occurring, excluding all improvements
made by lessees, other than those installed by Lessor at Lessee's expense.

     9.2  PREMISES DAMAGE; PREMISES BUILDING PARTIAL DAMAGE.

          (a)  Insured Loss: Subject to the provisions of paragraphs 9.4 and
9.5, if at any time during the term of this Lease there is damage which is an
Insured Loss and which falls into the classification of either Premises
Damage or Premises Building Partial Damage, then Lessor shall, as soon as
reasonably possible and to the extent the required materials and labor are
readily available through usual commercial channels, at Lessors' expense,
repair such damage (but not Lessee's fixtures, equipment or tenant
improvements originally paid for by Lessee) to its condition existing at the
time of the damage, and this Lease shall continue in full force and effect.

          (b)  Uninsured Loss:  Subject to the provisions of paragraphs 9.4
and 9.5, if at any time during the term of this Lease there is damage which
is not an Insured Loss and which falls within the classification of Premises
Damage or Premises Building Partial Damage, unless caused by a negligent or
willful act of Lessee (in which event Lessee shall make the repairs at
Lessee's expense), which damage prevents Lessee from making any substantial
use of the Premises, Lessor may at Lessor's option either (i) repair such
damage as soon as reasonably possible at Lessors' expense, in which event
this Lease shall continue in full force and effect, or (ii) given written
notice to Lessee within thirty (30) days after the date of the occurrence of
such damage of Lessor's intention to cancel and terminate this Lease as of
the date of the occurrence of such damage, in which event this Lease shall
terminate as of the date of the occurrence of such damage.

     9.3  PREMISES BUILDING TOTAL DESTRUCTION; OFFICE BUILDING PROJECT TOTAL
DESTRUCTION.  Subject to the provisions of paragraphs 9.4 and 9.4, if at any
time during the term of this Lease there is damage, whether or not it is an
Insured Loss, which falls into the classifications of either (i) Premises
Building Total Destruction, or (ii) Office Building Project Total
Destruction, then Lessor may at Lessor's option either (i) repair such damage
or destruction as soon as reasonably possible at Lessor's expense (to the
extent the required materials are readily available through usual commercial
channels) to its condition existing at the time of the damage, but not
Lessee's fixtures, equipment or tenant improvements, and this Lease shall
continue in full force and effect, or (ii) give written notice to Lessee
within thirty (30) days after the date of occurrence of such damage of
Lessor's intention to cancel and terminate this Lease, in which case this
Lease shall terminate as of the date of the occurrence of such damage.

     9.4  DAMAGE NEAR END OF TERM.

          (a)  Subject to paragraph 9.4(b), if at any time during the last
twelve (12) months of the term of this Lease there is substantial damage to
the Premises, Lessor may at Lessor's option cancel and terminate this Lease
as of the date of occurrence of such damage by giving written notice to Lessee
of Lessor's election to do so within 30 days after the date of occurrence of
such damage.

          (b)  Notwithstanding paragraph 9.4(a), in the event that Lessee has
an option to extend or renew this Lease, and the time within which said
option may be exercised has not yet expired, Lessee shall exercise such
option, if it is to be exercised at all, no later than twenty (20) days after
the occurrence of an Insured Loss falling within the classification of
Premises Damage during the last twelve (12) months of the term of this Lease.
If Lessee duly exercises such option during said twenty (20) day period,
Lessor shall, at Lessor's expense, repair such damage, but not Lessee's
fixtures, equipment or tenant improvements as soon as reasonably possible and
this Lease shall continue in full force and effect. If Lessee fails to
exercise such option during said twenty (20) day period, then Lessor may at
Lessor's option terminate and cancel this Lease as of the expiration of said
twenty (20) day period by giving written notice to Lessee of Lessor's
election to do so within ten (10) days after the expiration of said twenty
(20) day period, notwithstanding any term or provision in the grant of option
to the contrary.

     9.5  ABATEMENT OF RENT; LESSEE'S REMEDIES.

          (a)  In the event Lessor repairs or restores the Building or
Premises pursuant to the provisions of this paragraph 9, and any part of the
Premises are not usable (including loss of use due to loss of access or
essential services), the rent payable hereunder (including Lessee's Share of
Operating Expense Increase) for the period during which such damage, repair
or restoration continues shall be abated, provided (1) the damage was not
the result of the negligence of Lessee, and (2) such abatement shall only be
to the extent the operation and profitability of Lessee's business as
operated from the Premises is adversely affected. Except for said abatement
of rent, if any, Lessee shall have no claim against Lessor for any damage
suffered by reason of any such damage, destruction, repair or restoration.

          (b)  If Lessor shall be obligated to repair or restore the Premises
or the Building under the provisions of this Paragraph 9 and shall not
commence such repair or restoration within ninety (90) days after such
occurrence, or if Lessor shall not complete the restoration and repair within
six (6) months after such occurrence, Lessee may at Lessee's option cancel
and terminate this Lease by giving Lessor written notice of Lessee's election
to do so at any time prior to the commencement or completion, respectively,
of such repair or restoration. In such event this Lease shall terminate as of
the date of such notice.

          (c)  Lessee agrees to cooperate with Lessor in connection with any
such restoration and repair, including but not limited to the approval
and/or execution of plans and specifications required.

     9.6  TERMINATION - ADVANCE PAYMENTS. Upon termination of this Lease
pursuant to this paragraph 9, an equitable adjustment shall be made concerning
advance rent and any advance payments made by Lessee to Lessor. Lessor shall,
in addition, return to Lessee so much of Lessee's security deposit as has not
theretofore been applied by Lessor.

     9.7  WAIVER. Lessor and Lessee waive the provisions of any statute which
relate to termination of leases when leased property is destroyed and agree
that such event shall be governed by the terms of this Lease.

10.  REAL PROPERTY TAXES.

     10.1  PAYMENT OF TAXES. Lessor shall pay the real property tax, as
defined in paragraph 10.3, applicable to the Office Building Project subject
to reimbursement by Lessee of Lessee's Share of such taxes in accordance
with the provisions of paragraph 4.2, except as otherwise provided in
paragraph 10.2.

     10.2  ADDITIONAL IMPROVEMENTS. Lessee shall not be responsible for
paying any increase in real property tax specified in the tax assessor's
records and work sheets as being caused by additional improvements placed
upon the Office Building Project by other lessees or by Lessor for the
exclusive enjoyment of any other lessee. Lessee shall, however, pay to
Lessor at the time that Operating Expenses are payable under paragraph
4.2(c) the entirety of any increase in real property tax if assessed solely
by reason of additional improvements placed upon the Premises by Lessee or at
Lessee's request.

     10.3  DEFINITION OF "REAL PROPERTY TAX". As used herein, the term "real
property tax" shall include any form of real estate tax or assessment,
general, special, ordinary or extraordinary, and any license fee, commercial
rental tax, improvement bond or bonds, levy or tax (other than inheritance,
personal

                                   PAGE 5 OF 12

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income or estate taxes) imposed on the Office Building Project or
any portion thereof by any authority having the direct or indirect power to
tax, including any city, county, state or federal government, or any school,
agricultural, sanitary, fire, street, drainage or other improvement district
thereof, as against any legal or equitable interest of Lessor in the Office
Building Project or in any portion thereof, as against Lessor's right to rent
or other income therefrom, and as against Lessor's business of leasing the
Office Building Project. The term "real property tax" shall also include any
tax, fee, levy, assessment or charge (i) in substitution of, partially or
totally, any tax, fee, levy, assessment or charge hereinabove included within
the definition of "real property tax", or (ii) the nature of which was
hereinbefore included within the definition of "real property tax", or
(iii) which is imposed for a service or right not charged prior to June 1,
1978 or, if previously charged, has been increased since June 1, 1978, or
(iv) which is imposed as a result of a change in ownership, as defined by
applicable local statutes for property tax purposes, of the Office Building
Project or which is added to a tax or charge hereinbefore included within the
definition of real property tax by reason of such change of ownership, or (v)
which is imposed by reason of this transaction, any modifications or changes
hereto, or any transfers hereof.

     10.4  JOINT ASSESSMENT. If the improvements or property, the taxes for
which are to be paid separately by Lessee under paragraph 10.2 or 10.5 are
not separately assessed, Lessee's portion of that tax shall be equitably
determined by Lessor from the respective valuations assigned in the
assessor's work sheets or such other information (which may include the cost
of construction) as may be reasonably available. Lessor's reasonable
determination thereof, in good faith, shall be conclusive.

     10.5  PERSONAL PROPERTY TAXES.

      (a) Lessee shall pay prior to delinquency all taxes assessed against
and levied upon trade fixtures, furnishings, equipment and all other personal
property of Lessee contained in the Premises or elsewhere.

      (b) If any of Lessee's said personal property shall be assessed with
Lessor's real property, Lessee shall pay to Lessor the taxes attributable to
Lessee within ten (10) days after receipt of a written statement setting
forth the taxes applicable to Lessee's property.

11.  UTILITIES.

     11.1  SERVICES PROVIDED BY LESSOR. Lessor shall provide heating,
ventilation, air conditioning and janitorial service as reasonably required,
reasonable amounts of electricity for normal lighting and office machines,
water for reasonable and normal drinking and lavatory use, and replacement
light bulbs and/or fluorescent tubes and ballasts for standard overhead
fixtures.

     11.2  SERVICES EXCLUSIVE TO LESSEE. Lessee shall pay for all water, gas,
heat, light, power, telephone and other utilities and services specially or
exclusively supplied and/or metered exclusively to the Premises or to Lessee,
together with any taxes thereon. If any such services are not separately
metered to the Premises, Lessee shall pay at Lessor's option, either Lessee's
Share or a reasonable proportion to be determined by Lessor of all charges
jointly metered with other premises in the Building.

     11.3  HOURS OF SERVICE. Said services and utilities shall be provided
during generally accepted business days and hours or such other days or hours
as may hereafter be set forth. Utilities and services required at other times
shall be subject to advance request and reimbursement by Lessee to Lessor of
the cost thereof.

     11.4  EXCESS USAGE BY LESSEE. Lessee shall not make connection to the
utilities except by or through existing outlets and shall not install or use
machinery or equipment in or about the Premises that uses excess water,
lighting or power, or suffer or permit any act that causes extra burden upon
the utilities or services, including but not limited to security services,
over standard office usage for the Office Building Project. Lessor shall
require Lessee to reimburse Lessor for any excess expenses or costs that may
arise out a breach of this subparagraph by Lessee. Lessor may, in its sole
discretion, install at Lessee's expense supplemental equipment and/or
separate metering applicable to Lessee's excess usage or loading.

     11.5  INTERRUPTIONS. There shall be no abatement of rent and Lessor
shall not be liable in any respect whatsoever for the inadequacy, stoppage,
interruption or discontinuance of any utility or service due to riot, strike,
labor dispute, breakdown, accident, repair or other cause beyond Lessor's
reasonable control or in cooperation with governmental request or directions.

12.  ASSIGNMENT AND SUBLETTING.

     12.1  LESSOR'S CONSENT REQUIRED. Lessee shall not voluntarily or by
operation of law assign, transfer, mortgage, sublet, or otherwise transfer or
encumber all or any part of Lessee's interest in the Lease or in the
Premises, without Lessor's prior written consent, which Lessor shall not
unreasonably withhold. Lessor shall respond to Lessee's request for consent
hereunder in a timely manner and any attempted assignment, transfer, mortgage,
encumbrance or subletting without such consent shall be void, and shall
constitute a material default and breach of this Lease without the need for
notice to Lessee under paragraph 13.1. "Transfer" within the meaning of this
paragraph 12 shall include the transfer or transfers aggregating: (a) if
Lessee is a corporation, more than twenty-five percent (25%) of the voting
stock of such corporation, or (b) if Lessee is a partnership, more than
twenty-five percent (25%) of the profit and loss participation in such
partnership.

     12.2  LESSEE AFFILIATE. Notwithstanding the provisions of paragraph 12.1
hereof, Lessee may assign or sublet the Premises, or any portion thereof,
without Lessor's consent, to any corporation which controls, is controlled by
or is under common control with Lessee, or to any corporation resulting from
the merger or consolidation with Lessee, or to any person or entity which
acquires all the assets of Lessee as a going concern of the business that is
being conducted on the Premises, all of which are referred to as "Lessee
Affiliate"; provided that before such assignment shall be effective, (a) said
assignee shall assume, in full, the obligations of Lessee under this Lease
and (b) Lessor shall be given written notice of such assignment and
assumption. Any such assignment shall not, in any way, affect or limit the
liability of Lessee under the terms of this Lease even if after such
assignment or subletting the terms of this Lease are materially changed or
altered without the consent of Lessee, the consent of whom shall not be
necessary.

     12.3  TERMS AND CONDITIONS APPLICABLE TO ASSIGNMENT AND SUBLETTING.

           (a)  Regardless of Lessor's consent, no assignment or subletting
shall release Lessee of Lessee's obligation hereunder or alter the primary
liability of Lessee to pay the rent and other sums due Lessor hereunder
including Lessee's Share of Operating Expense Increase, and to perform all
other obligations to be performed by Lessee hereunder.

           (b)  Lessor may accept rent from any person other than Lessee
pending approval or disapproval of such assignment.

           (c)  Neither a delay in the approval or disapproval of such
assignment or subletting, nor the acceptance of rent, shall constitute a
waiver or estoppel of Lessor's right to exercise its remedies for the breach
of any of the terms or conditions of this paragraph 12 or this Lease.

           (d)  If Lessee's obligation under this Lease have been guaranteed
by third parties, then an assignment or sublease, and Lessor's consent
thereto, shall not be effective unless said guarantors give their written
consent to such sublease and the terms thereof.

           (e)  The consent by Lessor to any assignment or subletting shall
not constitute a consent to any subsequent assignment or subletting by
Lessee or to any subsequent or successive assignment or subletting by the
sublessee. However, Lessor may consent to subsequent sublettings and
assignments of the sublease or any amendments or modifications thereto
without notifying Lessee or anyone else liable on the Lease or sublease and
without obtaining their consent and such action shall not relieve such
persons from liability under this Lease or said sublease; however, such
persons shall not be responsible to the extent any such amendment or
modification enlarges or increases the obligations of the Lessee or sublessee
under this Lease or such sublease.

           (f)  In the event of any default under this Lease, Lessor may
proceed directly against Lessee, any guarantors or anyone else responsible
for the performance of this Lease, including the sublessee, without first
exhausting Lessor's remedies against any other person or entity responsible
therefor to Lessor, or any security held by Lessor or Lessee.

           (g)  Lessor's written consent to any assignment or subletting of
the Premises by Lessee shall not constitute an acknowledgment that no default
then exists under this Lease of the obligations to be performed by Lessee nor
shall such consent be deemed a waiver of any then existing default, except as
may be otherwise stated by Lessor at the time.

           (h)  The discovery of the fact that any financial statement relied
upon by Lessor in giving its consent to an assignment or subletting was
materially false shall, at Lessor's election, render Lessor's said consent
null and void.

     12.4  ADDITIONAL TERMS AND CONDITIONS APPLICABLE TO SUBLETTING.
Regardless of Lessor's consent, the following terms and conditions shall
apply to any subletting by Lessee of all or any part of the Premises and
shall be deemed included in all subleases under this Lease whether or not
expressly incorporated therein:

           (a)  Lessee hereby assigns and transfers to Lessor all of Lessee's
interest in all rentals and income arising from any sublease heretofore or
hereafter made by Lessee, and Lessor may collect such rent and income and
apply same toward Lessee's obligations under this Lease; provided, however,
that until a default shall occur in the performance of Lessee's obligations
under this Lease, Lessee may receive, collect and enjoy the rents accruing
under such sublease. Lessor shall not, by reason of this or any other
assignment of such sublease to Lessor nor by reason of the collection of the
rents from a sublessee, be deemed liable to the sublessee for any failure of
Lessee to perform and comply with any of Lessee's obligations to such
sublessee under such

                                   PAGE 6 OF 12
<PAGE>

sublease. Lessee hereby irrevocably authorizes and directs any such
sublessee, upon receipt of a written notice from Lessor stating that a
default exists in the performance of Lessee's obligations under this Lease,
to pay to Lessor the rents due and to become due under the sublease. Lessee
agrees that such sublessee shall have the right to rely upon any such
statement and request from Lessor, and that such sublessee shall pay such
rents to Lessor without an obligation or right to inquire as to whether such
default exists and notwithstanding any notice from or claim from Lessee to
the contrary Lessee shall have no right or claim against said sublessee or
Lessor for any such rents so paid by said sublessee to Lessor.

           (b)  No sublease entered into by Lessee shall be effective unless
and until it has been approved in writing by Lessor. In entering into any
sublease, Lessee shall use only such form of sublease as is satisfactory to
Lessor, and once approved by Lessor, such sublease shall not be changed to
modified without Lessor's prior written consent. Any sublease shall, by
reason of entering into a sublease under this Lease, be deemed for the
benefit of Lessor, to have assumed and agreed to conform and comply with each
and every obligation herein to be performed by Lessee other than such
obligations as are contrary to or inconsistent with provisions contained in
a sublease to which Lessor has expressly consented in writing.

           (c)  In the event Lessee shall default in the performance of its
obligations under this Lease, Lessor at its option and without any
obligation to do so, may require any sublessee to attorn to Lessor, in which
event Lessor shall undertake the obligations of Lessee under such sublease
from the time of the exercise of said option to the termination of such
sublease; provided, however, Lessor shall not be liable for any prepaid rents
or security deposit paid by such sublessee to Lessee or for any other prior
defaults of Lessee under such sublease.

           (d)  No sublessee shall further assign or sublet all or any part of
the Premises without Lessor's prior written consent.

           (e)  With respect to any subletting to which Lessor has consented,
Lessor agrees to deliver a copy of any notice of default by Lessee to the
sublessee. Such sublessee shall have the right to cure a default of Lessee
within three (3) days after service of said notice of default upon such
sublessee, and the sublessee shall have a right of reimbursement and offset
from and against Lessee for any such defaults cured by the sublessee.

    12.5  LESSOR'S EXPENSES.  In the event Lessee shall assign or sublet the
Premises or request the consent of Lessor to any assignment or subletting or
if Lessee shall request the consent of Lessor for any act Lessee proposes to
do then Lessee shall pay Lessor's reasonable costs and expenses incurred in
connection therewith, including attorneys', architects', engineers' or other
consultants' fees.

    12.6  CONDITIONS TO CONSENT.  Lessor reserves the right to condition any
approval to assign or sublet upon Lessor's determination that (a) the
proposed assignee or sublessee shall conduct a business on the Premises of a
quality substantially equal to that of Lessee and consistent with the general
character of the other occupants of the Office Building Project and not in
violation of any exclusives or rights then held by other tenants, and (b) the
proposed assignee or sublessee be at least as financially responsible as
Lessee was expected to be at the time of the execution of this Lease or of
such assignment or subletting, whichever is greater.

13.  DEFAULT; REMEDIES.

     13.1  DEFAULT.  The occurrence of any one or more of the following events
shall constitute a material default of this Lease by Lessee:

           (a)  The vacation or abandonment of the Premises by Lessee.
Vacation of the Premises shall include the failure to occupy the Premises for
a continuous period of thirty (30) days or more, whether or not the rent is
paid.

           (b)  The breach by Lessee of any of the covenants, conditions or
provisions of paragraphs 7.3(a), (b) or (d) (alterations), 12.1 (assignment
or subletting), 13.1(a) (vacation or abandonment), 13.1(e) (insolvency),
13.1(f) (false statement), 16(a) (estoppel certificate), 30(b)
(subordination), 33 (auctions), or 41.1 (easements), all of which are hereby
deemed to be material, non-curable defaults without the necessity of any
notice by Lessor to Lessee thereof.

           (c)  The failure by Lessee to make any payment of rent or any
other payment required to be made by Lessee hereunder, as and when due, where
such failure shall continue for a period of three (3) days thereof from
Lessor to Lessee. In the event that Lessor serves Lessee with a Notice to Pay
Rent or Quit pursuant to applicable Unlawful Detainer statutes such Notice to
Pay Rent or Quit shall also constitute the notice required by this
subparagraph.

           (d)  The failure by Lessee to observe or perform any of the
covenants, conditions or provisions of this Lease to be observed or performed
by Lessee other than those referenced in subparagraphs (b) and (c), above,
where such failure shall continue for a period of thirty (30) days after
written notice thereof from Lessor to Lessee; provided, however, that if the
nature of Lessee's noncompliance is such that more than thirty (30) days are
reasonably required for its cure, then Lessee shall not be deemed to be in
default if Lessee commenced such cure within said thirty (30) day period and
thereafter diligently pursues such cure to completion. To the extent
permitted by law, such thirty (30) day notice shall constitute the sole and
exclusive notice required to be given to Lessee under applicable Unlawful
Detainer statutes.

           (e) (i)  The making by Lessee of any general arrangement or
general assignment for the benefit of creditors; (ii) Lessee becoming a
"debtor" as defined in 11 U.S.C. Section 101 or any successor statute thereto
(unless, in the case of a petition filed against Lessee, the same is
dismissed within sixty (60) days; (iii) the appointment of a trustee or
receiver to take possession of substantially all of Lessee's assets located
at the Premises or of Lessee's interest in this Lease, where possession is
not restored to Lessee within thirty (30) days; or (iv) the attachment,
execution or other judicial seizure of substantially all of Lessee's assets
located at the Premises or of Lessee's interest in this Lease, where such
seizure is not discharged within thirty (30) days. In the event that any
provision of this paragraph 13.1(e) is contrary to any applicable law, such
provision shall be of no force or effect.

           (f)  The discovery by Lessor that any financial statement given to
Lessor by Lessee, or its successor in interest or by any guarantor of
Lessee's obligation hereunder, was materially false.

     13.2  REMEDIES.  In the event of any material default or breach of this
Lease by Lessee, Lessor may at any time thereafter, with or without notice or
demand and without limiting Lessor in the exercise of any right or remedy
which Lessor may have by reason of such default:

           (a)  Terminate Lessee's right to possession of the Premises by any
lawful means, in which case this Lease and the term hereof shall terminate
and Lessee shall immediately surrender possession of the Premises to Lessor.
In such event Lessor shall be entitled to recover from Lessee all damages
incurred by Lessor by reason of Lessee's default including, but not limited
to, the cost of recovering possession of the Premises; expenses of reletting
including necessary renovation and alteration of the Premises, reasonable
attorney's fees, and any real estate commission actually paid; the worth at
the time of award by the court having jurisdiction thereof of the amount by
which the unpaid rent for the balance of the term after the time of such
award exceeds the amount of such rental loss for the same period that Lessee
proves could be reasonably avoided; that portion of the leasing commission
paid by Lessor pursuant to paragraph 15 applicable to the unexpired term of
this Lease.

           (b)  Maintain Lessee's right to possession in which case this
Lease shall continue in effect whether or not Lessee shall have vacated or
abandoned the Premises. In such event Lessor shall be entitled to enforce all
of Lessor's rights and remedies under this Lease, including the right to
recover the rent as it becomes due hereunder.

           (c)  Pursue any other remedy now or hereafter available to Lessor
under the laws or judicial decisions of the state wherein the Premises are
located. Unpaid installments of rent and other unpaid monetary obligations
of Lessee under the terms of this Lease shall bear interest from the date due
at the maximum rate then allowable by law.

    13.3  DEFAULT BY LESSOR.  Lessor shall not be in default unless Lessor
fails to perform obligations required of Lessor within a reasonable time, but
in no event later than thirty (30) days after written notice by Lessee to
Lessor and to the holder of any first mortgage or deed of trust covering the
Premises whose name and address shall have theretofore been furnished to
Lessee in writing, specifying wherein Lessor has failed to perform such
obligation; provided, however, that if the nature of Lessor's obligation is
such that more than thirty (30) days are required for performance then Lessor
shall not be in default if Lessor commences performance within such 30-day
period and thereafter diligently pursues the same to completion.

    13.4  LATE CHARGES.  Lessee hereby acknowledges that late payment by
Lessee to Lessor of Base Rent, Lessee's Share of Operating Expense Increase
or other sums due hereunder will cause Lessor to incur costs not contemplated
by this Lease, the exact amount of which will be extremely difficult to
ascertain. Such costs include, but are not limited to, processing and
accounting charges, and late charges which may be imposed on Lessor by the
terms of any mortgage or trust deed covering the Office Building Project.
Accordingly, if any installment of Base Rent, Operating Expense Increase, or
any other sum due from Lessee shall not be received by Lessor or Lessor's
designee within ten (10) days after such amount shall be due, then, without
any requirement for notice to Lessee, Lessee shall pay to Lessor a late
charge equal to 6% of such overdue amount. The parties hereby agree that such
late charge represents a fair and reasonable estimate of the costs Lessor
will incur by reason of late payment by Lessee. Acceptance of such late
charge by Lessor shall in no event constitute a waiver of Lessee's default
with respect to such overdue amount, nor prevent Lessor from exercising any
of the other rights and remedies granted hereunder.

14.  CONDEMNATION. If the Premises or any portion thereof or the Office
Building Project are taken under the power of eminent domain, or sold under
the threat of the exercise of said power (all of which are herein called
"condemnation"), this Lease shall terminate as to the part so taken as of the
date the

                                 PAGE 7 OF 12

<PAGE>

condemning authority takes title or possession, whichever first occurs;
provided that is so much of the Premises or the Office Building Project are
taken by such condemnation as would substantially and adversely affect the
operation and profitability of Lessee's business conducted from the Premises,
Lessee shall have the option, to be exercised only in writing within thirty
(30) days after Lessor shall have given Lessee written notice of such taking
(or in the absence of such notice, within thirty (30) days after the
condemning authority shall have taken possession), to terminate this Lease as
of the date the condemning authority takes such possession. If Lessee does
not terminate this Lease in accordance with the foregoing, this Lease shall
remain in full force and effect as to the portion of the Premises remaining,
except that the rent and Lessee's Share of Operating Expense Increase shall
be reduced in the proportion that the floor area of the Premises taken bears
to the total floor area of the Premises. Common Areas taken shall be excluded
from the Common Areas usable by Lessee and no reduction of rent shall occur
with respect thereto or by reason thereof. Lessor shall have the option in
its sole discretion to terminate this Lease as of the taking of possession by
the condemning authority, by giving written notice to Lessee of such election
within thirty (30) days after receipt of notice of a taking by condemnation
of any part of the Premises or the Office Building Project. Any award for the
taking of all or any part of the Premises or the Office Building Project
under the power of eminent domain or any payment made under threat of the
exercise of such power shall be the property of Lessor, whether such award
shall be made as compensation for diminution in value of the leasehold or for
the taking of the fee, or as severance damages; provided, however, that
Lessee shall be entitled to any separate award for loss of or damage to
Lessee's trade fixtures, removable personal property and unamortized tenant
improvements that have been paid for by Lessee. For that purpose the cost of
such improvements shall be amortized over the original term of this Lease
excluding any options. In the event that this Lease is not terminated by
reason of such condemnation, Lessor shall to the extent of severance damages
received by Lessor in connection with such condemnation, repair any damage to
the Premises caused by such condemnation except to the extent that Lessee has
been reimbursed therefor by the condemning authority. Lessee shall pay any
amount in excess of such severance damages required to complete such repair.

15.  BROKER'S FEE.

     (a)  The brokers involved in this transaction are PINNACLE REALTY
MANAGEMENT COMPANY as "listing broker" and SAME as "cooperating broker,"
licensed real estate broker(s). A "cooperating broker" is defined as any
broker other than the listing broker entitled to a share of any commission
arising under this Lease. Upon execution of this Lease by both parties,
Lessor shall pay to said brokers jointly, or in such separate shares as they
may mutually designate in writing, a fee as set forth in a separate agreement
between Lessor and said broker(s), or in the event there is no separate
agreement between Lessor and said broker(s), the sum of $250.00, for
brokerage services rendered by said broker(s) to Lessor in this transaction.

     (b)  Deleted.

     (c)  Lessor agrees to pay said fee not only on behalf of Lessor but also
on behalf of any person, corporation, association, or other entity having an
ownership interest in said real property or any part thereof, when such fee
is due hereunder. Any transferee of Lessor's interest in this Lease, whether
such transfer is by agreement or by operation of law, shall be deemed to have
assumed Lessor's obligation under this paragraph 15. Each listing and
cooperating broker shall be a third party beneficiary of the provisions of
this paragraph 15 to the extent of their interest in any commission arising
under this Lease and may enforce that right directly against Lessor;
provided, however, that all brokers having a right to any part of such total
commission shall be a necessary party to any suit with respect thereto.

     (d)  Lessee and Lessor each represent and warrant to the other that
neither has had any dealings with any person, firm, broker or finder (other
than the person(s), if any, whose names are set forth in paragraph 15(a)
above) in connection with the negotiation of this Lease and/or the
consummation of the transaction contemplated hereby, and no other broker or
other person, firm or entity is entitled to any commission or finder's fee in
connection with said transaction and Lessee and Lessor do each hereby
indemnify and hold the other harmless from and against any costs, expenses,
attorneys' fees or liability for compensation or charges which may be claimed
by any such unnamed broker, finder or other similar party by reason of any
dealings or actions of the indemnifying party.

16.  ESTOPPEL CERTIFICATE.

     (a)  Each party (as "responding party") shall at any time upon not less
than ten (10) days' prior written notice from the other party ("requesting
party") execute, acknowledge and deliver to the requesting party a statement
in writing (i) certifying that this Lease is unmodified and in full force and
effect (or, if modified, stating the nature of such modification and
certifying that this Lease, as so modified, is in full force and effect) and
the date to which the rent and other charges are paid in advance, if any, and
(ii) acknowledging that there are not, to the responding party's knowledge,
any uncured defaults on the part of the requesting party, or specifying such
defaults if any are claimed. Any such statement may be conclusively relied
upon by any prospective purchaser or encumbrancer of the Office Building
Project or of the business of Lessee.

     (b)  At the requesting party's option, the failure to deliver such
statement within such time shall be a material default of this Lease by the
party who is to respond, without any further notice to such party, or it
shall be conclusive upon such party that (i) this Lease is in full force and
effect without modification except as may be represented by the requesting
party, (ii) there are no uncured defaults in the requesting party's
performance, and (iii) if Lessor is the requesting party, not more than one
month's rent has been paid in advance.

     (c)  If Lessor desires to finance, or sell the Office Building Project,
or any part thereof, Lessee hereby agrees to deliver to any lender or
purchaser designated by Lessor such financial statements of Lessee as may be
reasonably required by such lender or purchaser. Such statements shall
include the past three (3) years' financial statements of Lessee. All such
financial statements shall be received by Lessor and such lender or purchaser
in confidence and shall be used only for the purposes herein set forth.

17.  LESSOR'S LIABILITY. The term "Lessor" as used herein shall mean only the
owner or owners, at the time in question, of the fee title or a lessee's
interest in a ground lease of the Office Building Project, and except as
expressly provided in paragraph 15, in the event of any transfer of such
title or interest, Lessor herein named (and in case of any subsequent
transfers then the grantor) shall be relieved from and after the date of such
transfer of all liability as respects Lessor's obligations thereafter to be
performed, provided that any funds in the hands of Lessor or the then grantor
at the time of such transfer, in which Lessee has an interest, shall be
delivered to the grantee. The obligations contained in this Lease to be
performed by Lessor shall, subject as aforesaid, be binding on Lessor's
successors and assigns, only during their respective periods of ownership.

18.  SEVERABILITY. The invalidity of any provision of this Lease as
determined by a court of competent jurisdiction shall in no way affect the
validity of any other provision hereof.

19.  INTEREST ON PAST-DUE OBLIGATIONS. Except as expressly herein provided,
any amount due to Lessor not paid when due shall bear interest at the maximum
rate then allowable by law or judgments from the date due. Payment of such
interest shall not excuse or cure any default by Lessee under this Lease;
provided, however, that interest shall not be payable on late charges
incurred by Lessee nor on any amounts upon which late charges are paid by
Lessee.

20.  TIME OF ESSENCE. Time is of the essence with respect to the obligations
to be performed under this Lease.

21.  ADDITIONAL RENT. All monetary obligations of Lessee to Lessor under the
terms of this Lease, including but not limited to Lessee's Share of Operating
Expense Increase and any other expenses payable by Lessee hereunder shall be
deemed to be rent.

                                  PAGE 8 OF 12
<PAGE>

22. INCORPORATION OF PRIOR AGREEMENTS; AMENDMENTS. This Lease contains all
agreements of the parties with respect to any matter mention herein. No prior
or contemporaneous agreement or understanding pertaining to any such matter
shall be effective. This Lease may be modified in writing only, signed by the
parties in interest at the time of modification. Except as otherwise stated
in this Lease, Lessee hereby acknowledges that neither the real estate
broker listed in paragraph 15 hereof nor any cooperating broker on this
transaction nor the Lessor or any employee or agents of any of said persons
has made any oral written warranties or representations to Lessee relative to
the condition or use by Lessee of the Premises or the Office Building Project
and Lessee acknowledges that Lessee assumes all responsibility regarding the
Occupational Safety Health Act, the legal use and adaptability of the
Premises and the compliance thereof with all applicable laws and regulations
in effect during the term of this Lease.

23. NOTICES. Any notice required or permitted to be given hereunder shall be
in writing and may be given by personal delivery or by certified or
registered mail, and shall be deemed sufficiently given if delivered to
Lessee or to Lessor at the address noted below or adjacent to the signature
of the respective parties, as the case may be. Mailed notices shall be deemed
given upon actual receipt at the address required, or forty-eight hours
following deposit in the mail, postage prepaid, whichever first occurs.
Either party may by notice to the other specify a different address for
notice purposes except that upon Lessee's taking possession of the Premises,
the Premises shall constitute Lessee's address for notice purposes. A copy of
all notices required or permitted to be given to Lessor hereunder shall be
concurrently transmitted to such addresses as Lessor may from time to time
hereafter designate by notice to Lessee.

24. WAIVERS. No waiver by Lessor of any provision hereof shall be deemed a
waiver of any other provision hereof or of any subsequent breach by Lessee of
the same or any other provision. Lessor's consent to, or approval of, any act
shall be deemed to render unnecessary the obtaining of Lessor's consent to or
approval of any subsequent act by Lessee. The acceptance or rent hereunder by
Lessor shall not be a waiver of any preceding breach by Lessee of any
provision hereof, other than the failure of Lessee to pay the particular rent
so accepted, regardless of Lessor's knowledge of such preceding breach at the
time of acceptance of such rent.

25. RECORDING. Either Lessor or Lessee shall, upon request of the other,
execute, acknowledge and deliver to the other a "short form" memorandum of
this Lease for recording purposes.

26. HOLDING OVER. If Lessee, with Lessor's consent, remains in possession of
the Premises or any part thereof after the expiration of the term hereof, such
occupancy shall be a tenancy from month to month upon all the provisions of
this Lease pertaining to the obligations of Lessee, except that the rent
payable shall be two hundred percent (200%) of the rent payable immediately
preceding the termination date of this Lease, and all Options, if any,
granted under the terms of this Lease shall be deemed terminated and be of no
further effect during said month to month tenancy.

27. CUMULATIVE REMEDIES. No remedy or election hereunder shall be deemed
exclusive but shall, wherever possible, be cumulative with all other remedies
at law or in equity.

28. COVENANTS AND CONDITIONS. Each provision of this Lease performable by
Lessee shall be deemed both a covenant and a condition.

29. BINDING EFFECT; CHOICE OF LAW. Subject to any provisions hereof
restricting assignment or subletting by Lessee and subject to the provision
of paragraph 17, this Lease shall bind the parties, their personal
representatives, successors and assign. This Lease shall be governed by the
laws of the State where the Office Building Project is located and any
litigation concerning this Lease between the parties hereto shall be
initiated in the county in which the Office Building Project is located.

30. SUBORDINATION.

    (a) This Lease, and any Option or right of first refusal granted hereby,
at Lessor's option, shall be subordinate to any ground lease, mortgage, deed
of trust, or any other hypothecation or security now or hereafter placed upon
the Office Building Project and to any and all advances made on the security
thereof and to all renewals, modifications, consolidations, replacements and
extensions thereof. Notwithstanding such subordination, Lessee's right to
quiet possession of the Premises shall not be disturbed if Lessee is not in
default and so long as Lessee shall pay the rent and observe and perform all
of the provisions of this Lease, unless this Lease is otherwise terminated
pursuant to its terms. If any mortgagee, trustee or ground lessor shall elect
to have this Lease and any Options granted hereby proior to the lien of its
mortgage, deed of trust or ground lease, and shall give written notice
thereof to Lessee, this Lease and such Option shall be deemed prior to such
mortgage, deed of trust or ground lease, whether this Lease or such Options
are dated prior or subsequent to the date of said mortgage, deed of trust or
ground lease or the date of recording thereof.

    (b) Lessee agrees to execute any documents required to effectuate an
attornment, a subordination, or to make this Lease or any Option granted
herein prior to the lien of any mortgage, deed of trust or ground lease, as
the case may be. Lessee's failure to execute such documents within ten (10)
days after written demand shall constitute a material default by Lessee
hereunder without further notice to Lessee or, at Lessor's option, Lessor
shall execute such documents on behalf of Lessee as Lessee's
attorney-in-fact. Lessee does hereby make, constitute and irrevocably appoint
Lessor as Lessee's attorney-in-fact and in Lessee's name, place and stead, to
execute such documents in accordance with this paragraph 30(b).

31. ATTORNEYS' FEES.

    31.1 If either party or the broker(s) named herein bring an action to
enforce the terms hereof or declare rights hereunder the prevailing party
in any such action, trial, or appeal thereon, shall be entitled to his
reasonable attorneys' fees to be paid by the losing party as fixed by the
court in the same or separate suit, and whether or not such action is
pursued to decision or judgment. The provisions of this paragraph shall inure
to the benefit of the broker named herein who seeks to enforce a right
hereunder.

    31.2 The attorneys' fee award shall not be computed in accordance with
any court fee schedule, but shall be such as to fully reimburse all attorneys'
fees reasonably incurred in good faith.

    31.3 Lessor shall be entitled to reasonable attorneys' fees and all other
costs and expense incurred in the preparation and service of notices of
default and consultations in connection therewith, whether or not a legal
transaction is subsequently commenced in connection with such default.

32. LESSOR'S ACCESS.

    32.1 Lessor and Lessor's agents shall have the right to enter the
Premises at reasonable times for the purpose of inspecting the same,
performing any services required of Lessor, showing the same to prospective
purchasers, lenders, or lessees, taking such safety measures, erecting such
scaffolding or other necessary structures, making such alterations, repairs,
improvements or additions to the Premises or to the Office Building Project
as Lessor may reasonably deem necessary or desirable and the erecting, using
and maintaining of utilities, services, pipes and conduits through the Premises
and/or other premises as long as there is no material adverse effect to
Lessee's use of the Premises. Lessor may at any time place on or about the
Premises or the Building any ordinary "For Sale" signs and Lessor may at any
time during the last 120 days of the term hereof place on or about the
Premises any ordinary "For Lease" signs.

    32.2 All activities of Lessor pursuant to this paragraph shall be without
abatement of rent, nor shall Lessor have any liability to Lessee for the
same.

    32.3 Lessor shall have the right to retain keys to the Premises and to
unlock all doors in or upon the Premises other than to files, vaults and
safes, and in the case of emergency to enter the Premises by any reasonably
appropriate means, and any such entry shall not be deemed a forceable or
unlawful entry or detainer of the Premises or an eviction. Lessee waives any
charges for damages or injuries or interference with Lessee's property or
business in connection therewith.

33. AUCTIONS. Lessee shall not conduct, nor permit to be conducted, either
voluntarily or involuntarily, any auction upon the Premises or the Common
Areas without first having obtained Lessor's prior written consent.
Notwithstanding anything to the contrary in this Lease, Lessor shall not be
obligated to exercise any standard of reasonableness in determining whether to
grant such consent. The holding of any auction on the Premises or Common
Areas in violation of this paragraph shall constitute a material default of
this Lease.

34. SIGNS. Lessee shall not place any sign upon the Premises or the Office
Building Project without Lessor's prior written consent. Under no
circumstances

                                  PAGE 9 OF 12

<PAGE>

shall Lessee place a sign on any roof of the Office Building Project.

35. MERGER. The voluntary or other surrender of this Lease by Lessee, or a
mutual cancellation thereof, or a termination by Lessor, shall not work a
merger, and shall, at the option of Lessor, terminate all or any existing
subtenancies or may, at the option of Lessor, operate as an assignment to
Lessor of any or all of such subtenancies.

36. CONSENTS. Except for paragraph 33 (auctions) and 34 (signs) hereof,
wherever in this Lease the consent of one party is required to an act of the
other party such consent shall not be unreasonably withheld or delayed.

37. GUARANTOR. In the event that there is a guarantor of this Lease, said
guarantor shall have the same obligations as Lessee under this Lease.

38. QUIET POSSESSION. Upon Lessee paying the rent for the Premises and
observing and performing all of the covenants, conditions and provisions on
Lessee's part to be observed and performed hereunder, Lessee shall have quiet
possession of the Premises for the entire term hereof subject to all of the
provisions of this Lease. The individuals executing this Lease on behalf of
Lessor represent and warrant to Lessee that they are fully authorized and
legally capable of executing this Lease on behalf of Lessor and that such
execution is binding upon all parties holding an ownership interest in the
Office Building Project.

39. OPTIONS.

    39.1 DEFINITION. As used in this paragraph the word "Option" has the
following meaning: (1) the right or option to extend the term of this Lease or
to renew this Lease or to extend or renew any lease that Lessee has on other
property of Lessor; (2) the option of right of first refusal to lease the
Premises or the right of first offer to lease the Premises or the right of
first refusal to lease other space within the Office Building Project or
other property of Lessor or the right of first offer to lease other space
within the Office Building Project or other property of Lessor; (3) the right
or option to purchase the Premises or the Office Building Project, or the
right of first refusal to purchase the Premises or the Office Building
Project or the right of first offer to purchase the Premises or the Office
Building Project, or the right or option to purchase other property of Lessor,
or the right of first refusal to purchase other property of Lessor or the
right of first offer to purchase other property of Lessor.

    39.2 OPTIONS PERSONAL. Each Option granted to Lessee in this Lease is
personal to the original Lessee and may be exercised only by the original
Lessee while occupying the Premises who does so without the intent of
thereafter assigning this Lease or subletting the Premises or any portion
thereof, and may not be exercised or be assigned, voluntarily or involuntarily,
by or to any person or entity other than Lessee; provided, however, than an
Option may be exercised by or assigned to any Lessee Affiliate as defined in
paragraph 12.2 of this Lease. The Options, if any, herein granted to Lessee
are not assignable separate and apart from this Lease, nor may any Option be
separated from this Lease in any manner, either by reservation or otherwise.

    39.3 MULTIPLE OPTIONS. In the event that Lessee has any mulitiple options
to extend or renew this Lease a later option cannot be exercised unless the
prior option to extend or renew this Lease has been so exercised.

    39.4 EFFECT OF DEFAULT ON OPTIONS.

         (a) Lessee shall have no right to exercise an Option,
notwithstanding any provision in the grant of Option to the contrary, (i)
during the time commencing from the date Lessor gives to Lessee a notice of
default pursuant to paragraph 13.1(c) or 13.1(d) and continuing until the
noncompliance alleged in said notice of default is cured, or (ii) during the
period of time commencing on the day after a monetary obligation to Lessor is
due from Lessee and unpaid (without any necessity for notice thereof to
Lessee) and continuing until the obligation is paid, or (iii) in the event
that Lessor has given to Lessee three or more notices of default under
paragraph 13.1(c), or paragraph 13.1(d), whether or not the defaults are
cured, during the 12 month period of time immediately prior to the time that
Lessee attempts to exercise the subject Option, (iv) if Lessee has committed
any non-curable breach, including without limitation those describe in
paragraph 13.1(b), or is otherwise in default of any of the terms,
covenants or conditions of this Lease.

         (b) The period of time within which an Option may be exercised shall
not be extended or enlarged by reason of Lessee's inability to exercise an
Option because of the provisions of paragraph 39.4(a).

         (c) All rights of Lessee under the provisions of an Option shall
terminate and be of no further force or effect, notwithstanding Lessee's due
and timely exercise of the Option, if, after such exercise and during the term
of this Lease, (i) Lessee fails to pay to Lessor a monetary obligation of
Lessee for a period of thirty (30) days after such obligation becomes due
(without any necessity of Lessor to give notice thereof to Lessee), or (ii)
Lessee fails to commence to cure a default specified in paragraph 13.1(d)
within thirty (30) days after the date that Lessor gives notice to Lessee of
such default and/or Lessee fails thereafter to diligently prosecute said cure
to completion, or (iii) Lessor gives to Lessee three or more notices of
default under paragraph 13.1(c), or paragraph 13.1(d), whether or not the
defaults are cured, or (iv) if Lessee has committed any non-curable breach,
including without limitation those described in paragraph 13.1(b), or is
otherwise in default of any of the terms, covenants and conditions of this
Lease.

40. SECURITY MEASURES - LESSOR'S RESERVATIONS.

    40.1 Lessee hereby acknowledges that Lessor shall have no obligation
whatsoever to provide guard service or other security measures for the
benefit of the Premises or the Office Building Project. Lessee assumes all
responsibility for the protection of Lessee, its agents, and invitees and the
property of Lessee and of Lessee's agents and invitees form acts of third
parties. Nothing herein contained shall prevent Lessor, at Lessor's sole
option, from providing security protection for the Office Building Project or
any part thereof, in which event the cost thereof shall be included within
the definition of Operating Expenses, as set forth in paragraph 4.2(b).

    40.2 Lessor shall have the following rights:

         (a) To change the name, address or title of the Office Building
Project or building in which the Premises are located upon not less than 90
days prior written notice;

         (b) To, at Lessee's expense, provide and install Building standard
graphics on the door of the Premises and such portions of the Common Areas as
Lessor shall reasonably deem appropriate;

         (c) To permit any lessee the exclusive right to conduct any business
as long as such exclusive does not conflict with any rights expressly given
herein;

         (d) To place such signs, notices or displays as Lessor reasonably
deems necessary  or advisable upon the roof, exterior of the buildings or the
Office Building Project or on pole signs in the Common Areas;

    40.3 Lessee shall not:

         (a) Use a representation (photographic or otherwise) of the Building
or the Office Building Project or their name(s) in connection with Lessee's
business;

         (b) Suffer or permit anyone, except in emergency, to go upon the
roof of the Building.

41. EASEMENTS.

    41.1 Lessor reserves to itself the right, from time to time, to grant
such easements, rights and dedications that Lessor deems necessary or
desirable, and to cause the recordation of Parcel Maps and restrictions, so
long as such easements, rights, dedications, Maps and restrictions do not
unreasonably interfere with the use of the Premises by Lessee. Lessee shall
sign any of the aforementioned documents upon request of Lessor and failure
to do so shall constitute a material default of this Lease by Lessee without
the need for further notice to Lessee.

    41.2 The obstruction of Lessee's view, air, or light by any structure
erected in the vicinity of the Building, whether by Lessor or third parties,
shall in no way affect this Lease or impose any liability upon Lessor.

42. PERFORMANCE UNDER PROTEST. If at any time a dispute shall arise as to any
amount or sum of money to be paid by one party to the other under the
provisions hereof, the party against whom the obligation to pay the money is
asserted shall have the right to make payment "under protest" and such
payment shall not be regarded as a voluntary payment, and there shall survive
the right on the part of said party to institute suit for recovery of such
sum. If it shall be adjudged that there was no legal obligation on the part
of said party to pay such sum or any part thereof, said party shall be
entitled to recover such sum or so much thereof as it was not legally
required to pay under the provisions of this Lease.

43. AUTHORITY. If Lessee is a corporation, trust, or general or limited
partnership, Lessee, and each individual executing this Lease on behalf of
such entity

                              PAGE 10 OF 12
<PAGE>

represent and warrant that such individual is duly authorized to execute and
deliver this Lease on behalf of said entity. If Lessee is a corporation,
trust or partnership, Lessee shall, within thirty (30) days after execution
of this Lease, deliver to Lessor evidence of such authority satisfactory to
Lessor.

44.  CONFLICT.  Any conflict between the printed provisions, Exhibits or
Addenda of this Lease and the typewritten or handwritten provisions, if any,
shall be controlled by the typewritten or handwritten provisions.

45.  NO OFFER. Preparation of this Lease by Lessor or Lessor's agent and
submission of same to Lessee shall not be deemed an offer to Lessee to lease.
This Lease shall become binding upon Lessor and Lessee only when fully
executed by both parties.

46.  LENDER MODIFICATION. Lessee agrees to make such reasonable modifications
to this Lease as may be reasonably required by an institutional lender in
connection with the obtaining of normal financing or refinancing of the
Office Building Project.

47.  MULTIPLE PARTIES. If more than one person or entity is named as either
Lessor or Lessee herein, except as otherwise expressly provided herein, the
obligations of the Lessor or Lessee herein shall be the joint and several
responsibility of all persons or entities named herein as such Lessor or
Lessee, respectively.

48.  WORK LETTER. This Lease is supplemented by that certain Work Letter of
even date executed by Lessor and Lessee, attached hereto as Exhibit C, and
incorporated herein by this reference.

49.  ATTACHMENTS. Attached hereto are the following documents which
constitute a part of this Lease:

1)  Floor Plan and Regulations
2)  Lease Rider 1
3)  Lease Rider 2

LESSOR AND LESSEE HAVE CAREFULLY READ AND REVIEWED THIS LEASE AND EACH TERM
AND PROVISION CONTAINED HEREIN AND, BY EXECUTION OF THIS LEASE, SHOW THEIR
INFORMED AND VOLUNTARY CONSENT THERETO. THE PARTIES HEREBY AGREE THAT, AT THE
TIME THIS LEASE IS EXECUTED, THE TERMS OF THIS LEASE ARE COMMERCIALLY
REASONABLE AND EFFECTUATE THE INTENT AND PURPOSE OF LESSOR AND LESSEE WITH
RESPECT TO THE PREMISES.

          IF THIS LEASE HAS BEEN FILLED IN IT HAS BEEN PREPARED FOR
          SUBMISSION TO YOUR ATTORNEY FOR HIS APPROVAL. NO REPRESENTATION OR
          RECOMMENDATION IS MADE BY THE AMERICAN INDUSTRIAL REAL ESTATE
          ASSOCIATION OR BY THE REAL ESTATE BROKER OR ITS AGENTS OR EMPLOYEES
          AS TO THE LEGAL SUFFICIENCY, LEGAL EFFECT, OR TAX CONSEQUENCES OF
          THIS LEASE OR THE TRANSACTION RELATING THERETO; THE PARTIES SHALL
          RELY SOLELY UPON THE ADVICE OF THEIR OWN LEGAL COUNSEL AS TO THE
          LEGAL AND TAX CONSEQUENCES OF THIS LEASE.

          LESSOR                                        LESSEE

TESH PARTNERS, L.P.                       SCHEID VINEYARDS CALIFORNIA INC.
------------------------------------      ------------------------------------
BY: SCHEID VINEYARDS CALIFORNIA INC.
ITS: GENERAL PARTNER

By /s/ SCOTT D. SCHEID                     By /s/ HEIDI M. SCHEID
   -----------------------------------       ---------------------------------
   Scott D. Scheid, Vice President           Heidi M. Scheid, Vice President
                                             Finance

Its                                        Its
   -----------------------------------        --------------------------------

By                                         By
   -----------------------------------        --------------------------------
Its                                        Its
   -----------------------------------        --------------------------------

Executed at  Marina del Rey, CA            Executed at   Marina del Rey, CA
            --------------------------               -------------------------

on           5/10/99                       on      5/10/99
  ------------------------------------        --------------------------------

Address   13470 Washington Blvd., #300     Address 13470 Washington Blvd., #300
          MDR, CA 90292                            MDR, CA 90292
        --------------------------------           ----------------------------

                                 PAGE 11 OF 12
<PAGE>

                                 PAGE 12 OF 12

<PAGE>

                            STANDARD OFFICE LEASE
                                  FLOOR PLAN

                                    [LOGO]

                                NOT APPLICABLE

                                    EXHIBIT A

<PAGE>

                            RULES AND REGULATIONS FOR
                              STANDARD OFFICE LEASE

                                      [LOGO]

Dated:  MAY 10, 1999
By and Between   TESH PARTNERS, L.P. & SCHEID VINEYARDS CALIFORNIA INC.

                                   GENERAL RULES

     1.   Lessee shall not suffer or permit the obstruction of any Common
Areas, including driveways, walkways and stairways.

     2.   Lessor reserves the right to refuse access to any persons Lessor in
good faith judges to be a threat to the safety, reputation, or property of
the Office Building Project and its occupants.

     3.   Lessee shall not make or permit any noise or odors that annoy or
interfere with other lessees or persons having business within the Office
Building Project.

     4.   Lessee shall not keep animals or birds within the Office Building
Project, and shall not bring bicycles, motorcycles or other vehicles into
areas not designated as authorized for same.

     5.   Lessee shall not make, suffer or permit litter except in
appropriate receptacles for that purpose.

     6.   Lessee shall not alter any lock or install new or additional locks
or bolts.

     7.   Lessee shall be responsible for the inappropriate use of any toilet
rooms, plumbing or other utilities. No foreign substances of any kind are to
be inserted therein.

     8.   Lessee shall not deface the walls, partitions or other surfaces of
the Premises or Office Building Project.

     9.   Lessee shall not suffer or permit anything in or around the
Premises or Building that causes excessive vibration or floor loading in any
part of the Office Building Project.

     10.  Furniture, significant freight and equipment shall be moved into or
out of the building only with the Lessor's knowledge and consent, and subject
to such reasonable limitations, techniques and timing, as may be designated
by Lessor. Lessee shall be responsible for any damage to the Office Building
Project arising from any such activity.

     11.  Lessee shall not employ any service or contractor for services or
work to be performed in the Building, except as approved by Lessor.

     12.  Lessor reserves the right to close and lock the Building on
Saturdays, Sundays and legal holidays, and on other days between the hours of
7:00 P.M. and 8:00 A.M. of the following day. If Lessee uses the Premises
during such periods, Lessee shall be responsible for securely locking any
doors it may have opened for entry.

     13.  Lessee shall return all keys at the termination of its tenancy and
shall be responsible for the cost of replacing any keys that are lost.

     14.  No window coverings, shades or awnings shall be installed or used
by Lessee.

     15.  No Lessee, employee or invitee shall go upon the roof of the
Building.

     16.  Lessee shall not suffer or permit smoking or carrying of lighted
cigars or cigarettes in areas reasonably designated by Lessor or by
applicable governmental agencies as non-smoking areas.

     17.  Lessee shall not use any method of heating or air conditioning
other than as provided by Lessor.

     18.  Lessee shall not install, maintain or operate any vending machines
upon the Premises without Lessor's written consent.

     19.  The Premises shall not be used for lodging or manufacturing,
cooking or food preparation.

     20.  Lessee shall comply with all safety, fire protection and evacuation
regulations established by Lessor or any applicable governmental agency.

     21.  Lessor reserves the right to waive any one of these rules or
regulations, and/or as to any particular Lessee, and any such waiver shall
not constitute a waiver of any other rule or regulation or any subsequent
application thereof to such Lessee.

     22.  Lessee assumes all risks from theft or vandalism and agrees to keep
its Premises locked as may be required.

     23.  Lessor reserves the right to make such other reasonable rules and
regulations as it may from time to time deem necessary for the appropriate
operation and safety of the Office Building Project and it occupants. Lessee
agrees to abide by these and such rules and regulations.

                                  PARKING RULES

     1.   Parking areas shall be used only for parking by vehicles no longer
than full size, passenger automobiles herein called "Permitted Size
Vehicles." Vehicles other than Permitted Size Vehicles are herein referred to
as "Oversized Vehicles."

     2.   Lessee shall not permit or allow any vehicles that belong to or are
controlled by Lessee or Lessee's employees, suppliers, shippers, customers,
or invitees to be loaded, unloaded, or parked in areas other than those
designated by Lessor for such activities.

     3.   Parking stickers or identification devices shall be the property of
Lessor and be returned to Lessor by the holder thereof upon termination of
the holder's parking privileges. Lessee will pay such replacement charge as
is reasonably established by Lessor for the loss of such devices.

     4.   Lessor reserves the right to refuse the sale of monthly
identification devices to any person or entity that willfully refuses to
comply with the applicable rules, regulations, laws and/or agreements.

     5.   Lessor reserves the right to relocate all or a part of parking
spaces from floor to floor, within one floor, and/or to reasonably adjacent
offsite location(s), and to reasonably allocate them between compact and
standard size spaces, as long as the same complies with applicable laws,
ordinances and regulations.

     6.   Users of the parking area will obey all posted signs and park only
in the areas designated for vehicle parking.

     7.   Unless otherwise instructed, every person using the parking area is
required to park and lock his own vehicle. Lessor will not be responsible for
any damage to vehicles, injury to persons or loss of property, all of which
risks are assumed by the party using the parking area.

     8.   Validation, if established, will be permissible only by such method
or methods as Lessor and/or its licensee may establish at rates generally
applicable to visitor parking.

     9.   The maintenance, washing, waxing or cleaning of vehicles in the
parking structure or Common Areas is prohibited.

     10.  Lessee shall be responsible for seeing that all of its employees,
agents and invitees comply with the applicable parking rules, regulations,
laws and agreements.

     11.  Lessor reserves the right to modify these rules and/or adopt such
other reasonable and non-discriminatory rules and regulations as it may deem
necessary for the proper operation of the parking area.

     12.  Such parking use as is herein provided is intended merely as a
license only and no bailment is intended or shall be created hereby.

                                    EXHIBIT B

                                   PAGE 1 OF 1
<PAGE>

                                LEASE RIDER 1

                            STANDARD OFFICE LEASE

          This Lease Rider is attached to and forms a part of that certain
Standard Office Lease dated May 10, 1999 by and between TESH PARTNERS, L.P.,
("Lessor") and Scheid Vineyards California Inc. ("Lessee").

     I.   HAZARDOUS SUBSTANCE LAWS:

          A. COMPLIANCE. Lessee shall not cause or permit any Hazardous
Substance to be brought upon or kept or used in or about the Premises or the
Office Building Project without Lessor's prior written consent. If Lessor
consents in writing to any Hazardous Substance being brought on to the
Premises or the Office Building Project, then Lessee shall at its own expense
fully comply with all Hazardous Substance Laws and prudent industry
practices regarding use, management, or disposal of Hazardous Substances.
Except as discharged into the sanitary sewer in strict accordance and
conformity with all applicable Hazardous Substance Laws, Lessee shall cause
any and all Hazardous Substances removed from the Premises to be transported
solely by duly licensed haulers to duly licensed facilities for final
disposal of such materials and wastes. If Lessee breaches its obligations
herein, or if contamination of the Premises or the Office Building Project by
Hazardous Substances occurs for which Lessee is legally liable to Lessor for
damages resulting therefrom, or if Lessee's activities or those of its
contractors, agents, invitees and licenses or employees result in or cause a
Hazardous Substance Claim, then Lessee shall indemnify, defend, protect and
hold Lessor harmless from any and all claims, judgments, damages, penalties,
fines, costs, liabilities or losses (including, without limitation,
diminution in value of the Premises or the Office Building Project, damages
for the loss or restriction on use of rentable space or of any amenity of the
Premises or the Office Building Project, damages arising from any adverse
impact on marketing of space, and sums paid in settlement of claims,
attorneys' fees, consultants fees and experts' fees) which arise during or
after the Lease term as a result of such contamination. This indemnification
of Lessor by Lessee includes, without limitation, costs incurred in
connection with any investigation for the conditions or any clean-up,
remedial, removal or restoration work required by any Hazardous Substance
Law. The foregoing indemnification shall survive the expiration or earlier
termination for this Lease.

          B. DEFINITIONS. For purposes of this Agreement, the following terms
shall have the following meanings:

             (1) "Hazardous Substances" shall include without limitation:

                                       1
<PAGE>

          (i)    Those substances included within the definitions of
"hazardous substances," hazardous materials," "toxic substances," or "solid
waste" in the Comprehensive Environmental Response Compensation and Liability
Act of 1980 (42 U.S.C. S 9601 ET SEQ.) ("CERCLA"), as amended by Superfund
Amendments and Reauthorization Act of 1986 (Pub. L. 99-499 100 Stat. 1613)
("SARA"), the Resource Conservation and Recovery Act of 1976 (42 U.S.C. S
6901 ET SEQ.) ("RCRA"), and the Hazardous Materials Transportation Act, 49
U.S.C. S 1801 ET SEQ., and in the regulations promulgated pursuant to said
laws, all as amended;

          (ii)   Those substances listed in the United States Department of
Transportation Table (49 CFR 172.101 and amendments thereto) or by the
Environmental Protection Agency (or any successor agency) as hazardous
substances (40 CFR Part 302 and amendments thereto);

          (iii)  Any material, waste or substance which is (A) petroleum, (B)
asbestos, (C) polychlorinated biphenyls, (D) designated as a "hazardous
substance" pursuant to Section 311 of the Clean Water Act, 33 U.S.C. S 1251
ET SEQ. (33 U.S.C. S 1321) or listed pursuant to Section 307 of the Clean
Water Act (33 U.S.C. 1317); (E) flammable explosives; or (F) radioactive
materials;

          (iv)   Those substances defined as "hazardous wastes" in Section
25117 of the California Health & Safety Code, or as "hazardous substances" in
Section 25316 of the California Health & Safety Code, and in the regulations
promulgated pursuant to said laws;

          (v)    Those chemicals known to cause cancer or reproductive
toxicity, as published pursuant to the Safe Drinking Water and Toxic
Enforcement Act of 1986, Section 25249.5 ET SEQ. of the California Health &
Safety Code; and

          (vi)   Such other substances, materials and wastes which are or
become regulated as hazardous or toxic under applicable local, state or
federal law, or the United States government, or which are classified as
hazardous or toxic under federal, state, or local laws or regulations,
including without limitation any oils, solvents, paint thinner, acids,
caustics, insecticides, pesticides, herbicides, corrosives, flammable
explosives, vinyl chloride, cyanide solutions, area formaldehyde, waste
chemicals, sludges, radioactive materials, infectious waste, and any other
substance or material that, after release into the environment and upon
exposure, ingestion, inhalation, or assimilation, either directly from the
environmental or indirectly by ingestion through food chains, will or may
reasonably be anticipated to cause death, disease, behavior abnormalities,
cancer, reproductive harm, or genetic abnormalities.

                                       2
<PAGE>

     (2)  "Hazardous Substance Claim" shall include, but not be limited to,
any claim, demand, action, cause of action, suit, loss, cost, damage, fine,
penalty, expense, liability, judgment, proceeding, or injury, whether
threatened, sought, brought, or imposed, that seeks to impose costs or
liabilities for (i) noise; (ii) pollution or contamination of the air,
surface water, ground water, or soil; (iii) solid, gaseous, or liquid waste
generation, handling, treatment, storage, disposal, or transportation; (iv)
exposure to Hazardous Substances; (v) the manufacture, processing,
distribution in commerce, use, or storage of Hazardous Substances; (vi)
injury to or death of any person or persons directly or indirectly connected
with Hazardous Substances and directly or indirectly related to the Premises;
(vii) destruction or contamination of any property directly or indirectly
connected with Hazardous Substances and directly or indirectly related to
the Premises; or (viii) any and all penalties directly or indirectly
connected with Hazardous Substances and directly or indirectly related to the
Premises. The term "Hazardous Substance Claim" also includes (i) the costs of
removal of any and all Hazardous Substances from all or any portion of the
Premises or the Office Building Project, (ii) costs required to take
necessary precautions to protect against the release of Hazardous Substances
at, on, in, about, under, within, near or in connection with the Premises or
the Office Building Project in or into the air, soil, surface water, ground
water, or soil vapor, any public domain, or any surrounding areas, and (iii)
costs incurred to comply, in connection with all or any portion of the
Premises or the Office Building Project or any surrounding areas, with all
applicable laws with respect to Hazardous Substances, including any such laws
applicable to the work referred to in this sentence. "Hazardous Substance
Claim" also means any asserted or actual breach or violation of any
requirements of Hazardous Substance Law, or any event, occurrence, or
condition as a consequence of which (i) Lessee, Lessor or any owner,
occupant, or person having any interest in the Office Building Project shall
be liable or suffer any disability, or (ii) the Office Building Project shall
be subject to any restriction on use, ownership, transferability, or (iii) any
remedial work shall be required.

     (3)  "Hazardous Substance Laws" shall mean all requirements of
environmental or ecological laws or regulations or controls related to the
Office Building Project, including all requirements imposed by any law, rule,
order, plan, or regulations of any federal, state, or local executive,
legislative, judicial, regulatory, or administrative agency, board, or
authority, or any private agreement (such as covenants, conditions and
restrictions), which relate to (i) noise; (ii) pollution or protection of the
air, surface water, ground water, or soil, including without limitation all
permit and license requirements for air emissions and sanitary sewer
discharge; (iii) solid, gaseous, or liquid waste generation, treatment,
storage, disposal, release, discharge, or transportation; (iv) exposure to
Hazardous Substances; or

                                       3

<PAGE>

(v) regulation of the use, manufacture, processing, distribution and commerce,
use, or storage of Hazardous Substances.

     C.  ENVIRONMENTAL REPORT. At any time during the term of the Lease that
Lessor has reasonable cause to believe that the Premises contain Hazardous
Substances or Lessee has violated any Hazardous Substance Laws, Lessor may
require Lessee to provide a Phase I Environmental Report, as Lessee's sole
cost. Lessee prior to termination of this Lease, shall remove any and all
Hazardous Substances, on the Premises prior to the termination of the Lease
and surrender the Premises to the Lessor. Lessee shall provide an additional
Phase I Environmental Report by a reputable engineering firm acceptable to
Lessor, at Lessee's sole cost, prior to the termination of the Lease.

            LESSOR                                         LESSEE

    TESH PARTNERS, L.P.                       SCHEID VINEYARDS CALIFORNIA INC.
    BY: SCHEID VINEYARDS CALIFORNIA INC.
    ITS: GENERAL PARTNER

   /s/ SCOTT D. SCHEID                        /s/ Heidi M. Scheid
   -------------------------------------      ----------------------------------
   Scott D. Scheid, Vice President            Heidi M. Scheid, Vice President
                                              Finance

<PAGE>

                                 LEASE RIDER 2

                             STANDARD OFFICE LEASE

     This Lease Rider is attached to and forms a part of that certain
Standard Office Lease dated May 10, 1999 by and between TESH PARTNERS, L.P.,
("Lessor") and Scheid Vineyards California Inc. ("Lessee"). To the extend
that the provisions of this Lease Rider are in conflict with the printed
provisions of this Lease, the terms and provisions of this Lease Rider shall
govern and prevail.

AMERICANS WITH DISABILITIES ACT DISCLOSURE

     The United States Congress has recently enacted the Americans with
Disabilities Act. Among other things, this act is intended to make many
business establishments equally accessible to persons with a variety of
disabilities; modifications to real property may be required; at Landlord's
cost. State and local laws also may mandate changes.

     Mandated changes may be required now, or in the future. Lessees should
consult attorneys and qualified design professionals of their choice for
information regarding these matters.

     "Without limiting the generality of the foregoing, Lessee acknowledges
he/she shall comply with all governmental rules, regulations, or requirements
regarding environmental laws within the rentable space they currently occupy
and Americans with Disabilities Act."

            LESSOR                                         LESSEE

    TESH PARTNERS, L.P.                       SCHEID VINEYARDS CALIFORNIA INC.
    BY: SCHEID VINEYARDS CALIFORNIA INC.
    ITS: GENERAL PARTNER

   /s/ SCOTT D. SCHEID                        /s/ Heidi M. Scheid
   -------------------------------------      ----------------------------------
   Scott D. Scheid, Vice President            Heidi M. Scheid, Vice President
                                              Finance

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