Document:

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                                  EXHIBIT 10.52

                           JOINT DEVELOPMENT AGREEMENT

     Advanced Micro Devices, Inc, a Delaware corporation ("AMD"), and United
Microelectronics Corporation, a Taiwan corporation ("UMC") enter this Joint
Development Agreement ("JDA") as of this 31st day of January 2002. This JDA,
together with its exhibits, includes all essential terms for the program for
joint technology development (the "AU JDP") between AMD and UMC.

1.   DEVELOPMENT OF CMOS TECHNOLOGY PLATFORMS

     UMC will develop competitive CMOS technology platforms to serve broad
foundry business needs on a time table competitive with the ITRS roadmap.

     1.1 UMC's target roadmap and timetable for general purpose CMOS technology
platforms at the ***** and ***** technology nodes (the "UMC Advanced CMOS
Platforms") is attached as Exhibit 1.1.

     1.2 Through regular working group meetings, UMC and AMD will exchange ideas
on the appropriate targets for specifications, mainstream application/voltages,
timing, and performance, with the understanding that UMC will have
responsibility to decide upon these matters for the UMC Advanced CMOS Platforms.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       1

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2.   DEVELOPMENT OF HIGH PERFORMANCE CAPABILITIES & MODULES

     AMD will develop high performance capability, suitable for delivering
performance levels to its MPU designs, and will include concentration on
appropriately based transistor designs (whether SOI, strained silicon or other).

     2.1 AMD's target roadmap and timetable for high performance transistor
capability and the associated transistor specific modules for the ***** and
***** nodes is attached as Exhibit 2.1.

     2.2 Through working group meetings, AMD and UMC will exchange ideas on
appropriate technology, manufacturing, and performance considerations involved
in high performance capability and transistor-specific modules, with the
understanding that AMD will have responsibility to decide upon these matters for
its products and needs.

3.   WORKING GROUPS AND TEAM MECHANICS

     AMD and UMC teams will be responsible for the cooperation between the
parties and the joint development work in the AU JDP.

     3.1 The team members initially assigned to the specific JDP Working Groups,
the leaders of these teams ("Management Leaders"), and the Executive Sponsors
for the AU JDP are shown in Exhibit 3.1. Either party may, by written notice to
the other, update their list of team members with other qualified engineers and
executives as may be reasonable.

     3.2 The JDP Working Groups will be responsible for the day to day
development efforts and coordination in the AU JDP. Each JDP Working Group will
convene--in person, or by telephone or video conference--weekly (except when the
Working Group deems it appropriate, the weekly sessions may be reset to be
biweekly), with the objective that the teams communicate routinely and regularly
on all relevant aspects of the AU JDP joint development work.

          3.2.1 The JDP Working Groups will establish, and modify or update as
     they deem appropriate, procedures and practices for their meetings and
     coordination.

          3.2.2 The JDP Working Groups will establish in writing agreed upon
     projects, specific working plans, including schedules, milestones and
     manpower/resource needs, for the AU JDP. Any matters concerning the working
     plans, milestones, schedules or manpower/resource needs that cannot be
     resolved in the JDP Working Group level will be escalated to the Management
     Leaders who will be responsible to cooperate in good faith to find a
     mutually acceptable solution in a timely manner, and failing such a
     resolution at that level, the matter will be escalated to and resolved by
     the Executive Sponsors.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       2

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     3.3 The leaders of the JDP Working Groups, the Management Leaders and
Executive Sponsors will be responsible for the management and coordination of
the development efforts in the AU JDP. AMD and UMC will convene--by telephone or
video conference, or in person--regular status update meetings on a monthly
basis with the objective that the JDP Working Group and Management Leaders
responsible for the program communicate routinely and regularly on all relevant
aspects of the AU JDP joint development work.

     3.4 AMD and UMC will convene regular management review meetings on a
quarterly basis with the objective that the Executive Sponsors, Management
Leaders, and others responsible for the AU JDP meet regularly to review all
relevant aspects of the AU JDP joint development work and to enhance the
cooperation and resolve any issues. AMD and UMC intend that these quarterly
review meetings will alternate between UMC and AMD locations. The first such
management review meeting will be held on or before March 31, 2002.

4.   JOINT DEVELOPMENT OF HIGH PERFORMANCE MPU PROCESSES

     4.1 Based on the above, and subject to their obligations of confidentiality
to third parties, AMD and UMC will each contribute their requisite know-how as
necessary to jointly develop high performance MPU processes: at the *****
technology node, at the ***** technology node, and as may be agreed. For
purposes of the AU JDP, the ***** technology node is intended to refer to the
next generation below the ***** node shown in the UMC technology roadmap,
competitive with the ITRS roadmap and industry conditions.

     4.2 Without limiting Clause 4.1 and subject to their obligations of
confidentiality to third parties, if, during their AU JDP work, either UMC or
AMD personnel become aware of information or developments that reasonably seem
material to the work or results of the AU JDP, they will promptly disclose such
matter to the other, and, thereafter the parties will cooperate to evaluate the
utility of the matter to the AU JDP.

          4.2.1 Except as otherwise agreed in writing, neither UMC nor AMD will
     seek or be entitled to *****.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       3

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          4.2.2 If any party believes they have information which may be
     material to the AU JDP but which is subject to restrictions or which in the
     event of disclosure to the other or for the AU JDP requires compensation to
     unaffiliated third parties, AMD and UMC will cooperate in good faith to
     evaluate the situation and to find a mutually satisfactory resolution
     consistent with any obligations to such third parties.

          4.2.3 UMC and AMD will cooperate to ensure that the JDP Working Groups
     have knowledge of all technology and know-how reasonably useful to enable a
     reasonably skilled team to participate in the JDP Working Groups as
     intended and to utilize UMC's Advanced CMOS Platforms and Advanced MPU
     Processes in their preferred manner (collectively, such technology and
     know-how shall be referred to as "Necessary Background").

          4.2.4 Notwithstanding anything to the contrary in Clauses 4.1 and/or
     4.2, nothing in this JDA requires any party to disclose information or
     ideas which that party, at the time in their own good faith judgment, deems
     so experimental, so preliminary or so unsubstantiated that they would not
     rely on such results in their own process development, and such matters
     will not be considered "Necessary Background."

     4.3 Through the working group efforts, AMD and UMC will jointly define high
performance MPU processes, at the ***** and ***** technology nodes and as may be
agreed (the "Advanced MPU Processes"), with the understanding that the processes
are intended (i) to follow and be compatible with UMC's Advanced CMOS Platform
at the technology node involved, and (ii) to meet AMD's MPU performance needs
and mutually agreeable manufacturing, reliability and quality criteria. Without
limiting the foregoing,

          4.3.1 the parties intend that they will cooperate in the selection of
     equipment specific for ***** (other than that selected to date by UMC) and
     in the selection of the equipment set for the ***** node so that, to the
     extent feasible, they will avoid and/or minimize incompatibilities.

          4.3.2 the parties intend that the JDP Working Groups will formulate
     specific plans and procedures for regular review of MPU production with the
     Advanced MPU Processes (and with UMC's ***** MPU Process) for the purpose
     of ongoing performance (including without limitation transistor speed and
     gate delay) and manufacturing enhancements.

5.   WORKING GROUP AND EXECUTIVE RESPONSIBILITIES

     5.1 All development and technology issues will be resolved in the first
instance at the JDP Working Group level.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       4

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     5.2 If, at any time, the team leaders feel that a matter has not been
satisfactorily resolved, or, upon the written request of either party, the
matter will be escalated to AMD and UMC Management Leaders. If the matter is not
resolved at that level, then upon written request of either or both parties, it
will be escalated to the Executive Sponsors who will be responsible to find a
mutually acceptable solution in a timely manner.

6.   EXPENSES AND MUTUAL SUPPORT

     6.1 Except as otherwise agreed in writing, AMD and UMC will each pay *****,
provided that there will be assignment/delegation of engineers from each company
to the facilities of the other (if from AMD, these engineers will be "AMD
Delegates" and if from UMC, these engineers will be "UMC Delegates") to assist
in development, integration and/or transfer. The Management Leaders will
cooperate to agree upon, as part of their project definition and specific
working plans, the tasks that need to be accomplished, and any associated cost
allocation issues.

     6.2 Without limiting the foregoing, and except as otherwise agreed in
writing, each party will be responsible for all compensation, travel, benefits,
and taxes with respect to its activities and personnel.

     6.3 AMD and UMC will each arrange (at the expense of the company at the
host location) suitable office space for the engineers from the other assigned
to work at the host location, including reasonable communication and data line
connections.

     6.4 All personnel of one company while visiting and/or working at
facilities or locations of the other will abide by the standard and customary
rules and practices of the host at the location involved.

7.   INTELLECTUAL PROPERTY, TECHNOLOGY RIGHTS AND RESTRITIONS

     7.1 Subject to the rights and obligations of the parties under this JDA, as
between UMC and AMD:

          7.1.1 All inventions, conceptions, know-how and/or technology
     developed and/or contributed by one party (or its employees or consultants)
     without joint contribution by the other ("Party Inventions") will owned by
     the party who developed and/or contributed the specifics involved, and that
     party shall have the rights to any and all patentable subject matter
     involved;

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       5

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          7.1.2 All inventions, conceptions, know-how and/or technology
     conceived jointly by the parties pursuant to their efforts in the AU JDP
     (including without limitation, rights to patents with respect to such
     subject matter) ("Joint Inventions") will be jointly owned by the jointly
     responsible parties. Without limiting the foregoing, the Management Leaders
     will set up mutually agreeable mechanisms to allocate the responsibility to
     prepare and prosecute applications for patents pursuant to such procedures
     as will ensure orderly and efficient protection for intellectual property,
     with the guideline that the costs of prosecution and maintenance for
     specific joint patents will be shared equally by the jointly responsible
     parties involved.

     7.2 Subject to the rights and obligations of the parties under this JDA:

          7.2.1 AMD grants UMC worldwide licenses to ***** the UMC Advanced CMOS
     Platforms, the Advanced MPU Processes, and all Necessary Background, *****
     to the fullest extent of AMD's ability to do so without the obligation to
     pay unaffiliated third parties compensation for such grants, and

          7.2.2 UMC grants AMD worldwide licenses to ***** the UMC Advanced CMOS
     Platforms, the Advanced MPU Processes, and all Necessary Background, *****
     to the fullest extent of UMC's ability to do so without the obligation to
     pay unaffiliated third parties compensation for such grants, and

          7.2.3 Either party may terminate the licenses granted to the other
     under Clauses 7.2.1 and 7.2.2 in the event that the ***** is properly
     terminated for material breach by the other (and the non-breaching party
     may retain its rights and licenses under such Clauses), subject however to
     the procedures agreed upon by the parties for dispute resolution.

          7.2.4 AMD and UMC agree to negotiate a mutually acceptable ***** with
     the target to close on a solution by March 31, 2002.

     7.3 Regardless of anything to the contrary above, and subject to AMD's
compliance with its obligations in the Manufacturing Agreement to offer UMC the
*****, UMC shall not use the Advanced MPU Processes or the UMC Advanced CMOS
Platforms to manufacture ***** for any party other than AMD, except:

          7.3.1 UMC may manufacture small engineering sample quantities of
     product;

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       6

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          7.3.2 UMC may manufacture products for applications to be specified
     and mutually agreed to at times after AMD qualification of the process
     involved;

          7.3.3 UMC may manufacture for third parties who (at the applicable
     time) have a technology license and/or transfer from AMD to design,
     manufacture or sell *****; and

          7.3.4 in other specific situations in which UMC and AMD senior
     executives mutually agree that the situation does not present a ***** to
     AMD from the use of the technology involved; and

          7.3.5 This restriction of Clause 7.3 shall expire upon any one or more
     of the following: (i) if UMC and AMD mutually agree not to extend the JDP
     to ***** or to terminate the JDP prior to qualification of the ***** in
     UMC, (ii) the JDP is terminated for material breach by AMD, (iii) three
     years after first qualification of any AMD Product with the process
     involved, if at such time, AMD and UMC are not then engaged in a JDP for
     Advanced MPU Processes, provided however that the restrictions of Clause
     7.3 shall remain in place for a particular technology node *****
     notwithstanding any such triggers for so long as AMD remains obligated (and
     in compliance with such obligations) to purchase significant quantities of
     MPU wafers from UMC or AU for such node. For purposes of this Clause 7.3.5,
     "significant quantities" is intended to refer to volumes such as those
     contemplated in the Manufacturing Agreements.

     7.4 Subject to UMC's compliance with its obligations to supply AMD and
except as expressly stated in Clauses 7.5 to 7.9, AMD ***** UMC's Advanced CMOS
Platforms, the Advanced CMOS Processes, or the Necessary Background or any
specific information concerning any ***** other than AMD's Fab 25 (Austin) or
Fab 30 (Dresden) nor will AMD manufacture with such Restricted Technology any
products as a foundry or contract manufacturer for a third party from AMD's Fab
25 (Austin) or Fab 30 (Dresden) for a period of 3 years from the first
commercial shipment from UMC and/or AU fabs of a product manufactured thereby,
provided however that nothing in this Clause 7.4 shall prohibit AMD from using
the Restricted Technology to manufacture Flash in Fab 25 (Austin) and/or Fab 30
(Dresden) for FASL.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       7

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     7.5 Regardless of anything to the contrary, and except as stated in Clauses
7.6 to 7.9, AMD shall not have any rights under this JDA to disclose UMC
Advanced CMOS Processes, Advanced MPU Processes, or UMC Confidential Information
(as defined in the Mutual Reciprocal Non-Disclosure Agreement) to any third
party manufacturer of semiconductors, and AMD shall not have any rights under
this JDA to use such matters to manufacture semiconductors (in wafer, die or
chip form) for or on behalf of any third party.

     7.6 Regardless of anything to the contrary in Clause 7.5, under appropriate
non-disclosure agreements commensurate with the restrictions stated in this JDA,
AMD shall be allowed to disclose Restricted Technology to third parties as may
be reasonably necessary to develop alternative manufacturing and/or technology
sources upon the occurrence of any one or more of the following events:

          7.6.1 For reasons reasonably attributable to UMC, and without material
     contributory fault by AMD, ***** or

          7.6.2 For reasons other than material contributory fault by AMD, *****
     or

          7.6.3 In spite of good faith negotiations by UMC and AMD, UMC fails to
     agree with AMD in a reasonably timely manner on future MPU process
     technology development between the companies, or for reasons other than
     material contributory fault by AMD, ***** or from other qualified partners,
     or

          7.6.4 If UMC or AU properly terminates a Manufacturing Agreement and
     does not offer to continue to supply AMD with manufacturing services for
     UMC Advanced CMOS Platform and/or Advanced MPU Processes in volumes and
     under terms within the parties' then recent historical course of dealing
     (provided however that this Clause 7.6.4 shall not require UMC or AU to
     extend AMD any credit or accept financial terms other than as may be fair
     market for a customer in AMD's position and with its financial history and
     rating), or

          7.6.5 If AMD properly terminates a Manufacturing Agreement due to
     material breach by UMC or AU, or

          7.6.6 in such other situations as the parties may negotiate.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       8

<PAGE>

     7.7 Regardless of anything to the contrary in Clause 7.5, and under the
conditions stated in this Clause 7.7, AMD shall be allowed to disclose, under
appropriate written non-disclosure agreements commensurate with the restrictions
stated in this JDA, Restricted Technology to FASL, and, to the extent required
under written non-foundry joint venture, joint product and/or joint development
agreements entered between AMD and other third party(ies), AMD may, for the
***** technology node, disclose Restricted Technology to ***** third parties
and, for the ***** technology node and other more advanced nodes to which the
parties agree to extend this JDA, AMD may disclose Restricted Technology to
***** third parties *****, subject to the following conditions:

          7.7.1 The third party to whom the information is transferred must, at
     the time of disclosure and at a minimum, meet one of the two following
     conditions: (a) AMD must own a minimum of 40% of the third party, or (b)
     *****.

          7.7.2 The third party, who at the time of disclosure, must not derive
     more than ***** and, if applicable, any shareholder who owns ***** of such
     third party;

          7.7.3 The third party may not use the information involved to
     manufacture or sell *****, except upon terms which provide to UMC a
     Reasonable Royalty for the Restricted Technology involved;

          7.7.4 The third party may not use the information involved to *****,
     provided however that the restriction in this Clause 7.7.4 shall expire
     three years following commercial production of AMD MPU products with the
     information involved at a UMC and/or AU facility;

          7.7.5 In the event that AMD receives cash, royalties, tangible
     property, profit sharing, or equity (by way of technical shares or
     otherwise) in exchange or as part of the arrangement with a third party for
     license or disclosure of Restricted Technology, the disclosure is subject
     to prior agreement with UMC on equitable sharing of the benefit pursuant to
     sharing to be negotiated between UMC and AMD.

          7.7.6 Nothing in this Clause 7.7 shall waive or reduce in any fashion
     any capacity or loading commitment made by AMD under the Manufacturing
     Agreements.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       9

<PAGE>

          7.7.7 For purposes of this Clause 7.7, a ***** UMC for its
     contributions to and investments in the technology involved, provided
     however that it is the intent of the parties that a Reasonable Royalty for
     a transfer of the Restricted Technology shall, for transfers that commence
     more than three to five years after qualification of the node involved,
     approach zero. Upon written request to do so, the parties will negotiate in
     good faith to reach an agreement on a Reasonable Royalty for the specific
     situation involved, provided however that if they fail to do so, the
     Reasonable Royalty will be set in a manner binding on all parties by a
     neutral decision-maker (or panel of decisionmakers) having experience in
     such matters and under procedures which the parties will negotiate on or
     before March 31, 2002. The procedures will, at a minimum, insure initiation
     of the decision-making process within fifteen days of a written request to
     negotiate Reasonable Royalty, and enable equitable and efficient
     decision-making so that a resolution on any disputes can be secured within
     thirty days of a request for such a neutral decision.

     7.8 Regardless of anything to the contrary in Clause 7.5, under appropriate
non-disclosure agreements commensurate with the restrictions stated in this JDA,
AMD shall be allowed to disclose Restricted Technology to third parties as may
be reasonably necessary in connection with a sale of all or substantially all of
AMD's Fab 30 in Dresden Germany and/or AMD's Fab 25 in Austin Texas under the
following terms:

          7.8.1 such information may not be used or employed to perform foundry
     services within three years following commercial production of AMD MPU
     products with the information involved at a UMC and/or AU facility, nor may
     such a transfer occur to or for the benefit of any of UMC's then two most
     significant independent foundry competitors in the industry, and

          7.8.2 the process flows and modules in UMC's Advanced CMOS Platform,
     Necessary Background and/or Advanced MPU Processes may not be transferred
     or installed other than in the specific fab involved in the sale/transfer,
     provided that this Clause 7.8.2 shall not prohibit the use of information
     within such flows and modules to develop technology to be used elsewhere,
     and

          7.8.3 If the *****.

     7.9 Regardless of anything to the contrary, nothing in this JDA shall
prohibit either party from disclosing or licensing to others any technology,
know-how or other intellectual property which was created and/or obtained
independently of the other.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       10

<PAGE>

     7.10 No mask work or patent licenses are granted expressly, or by
implication, estoppel or otherwise, under this JDA. The parties will cooperate
on library, cell, IP, test structure and other design aspects as they may deem
appropriate, and all rights concerning such matters as between them will be as
stated in a written agreement.

     7.11 Notwithstanding anything herein to the contrary, either party may use
Residuals for any purpose, including without limitation use in development,
manufacture, promotion, sale and maintenance of its products and services;
provided that this right to Residuals does not represent a license under any
valid patents, copyrights or other intellectual property rights of the
disclosing party. The term "Residuals" means any information that are retained
in the unaided memories of the receiving party's employees who have had access
to the disclosing party's information pursuant to the terms of this Agreement.
An employee's memory is unaided if the employee has not intentionally memorized
the Information for the purpose of retaining and subsequently using or
disclosing it.

     7.12 Except as expressly stated, this JDA will not serve to impair the
right of either AMD or UMC to develop, make, procure, market and/or maintain
products or processes, now or in the future, which incorporate features that may
be competitive with the technology developed pursuant to the AU JDP, or require
either AMD or UMC to disclose any planning information to the other. Nothing in
this JDA prohibits or restricts either AMD or UMC from developing or acquiring
technology, rights, know-how, processes or information, independently of the
other party, whether with or without the involvement of third parties.

     7.13 Except as expressly agreed in writing, neither party will have any
responsibilities or obligations under this JDA to transfer or install processes
or know-how to or into premises or facilities of the other, nor will either
party have any responsibilities or obligations under this JDA to provide
technical support or service to the other for such transfer or installation.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       11

<PAGE>

8.   MISCELLANEOUS

     8.1 The terms of the attached Miscellaneous Provisions and Definitions
Attachment are incorporated by reference.

     8.2 The obligations of and rights under Clauses 4.2.1, 4.2.4, 6.2, 6.4,
7.1, 7.2, 7.3, 7.4 (except 7.4 shall not survive if this JDA terminates due to
material breach by UMC), 7.5, 7.6, 7.7, 7.8, 7.9, 7.10, 7.11, 7.12, 7.13, and 8
and the Miscellaneous Provisions and Definitions Attachment shall survive the
expiration or termination of this JDA.

Advanced Micro Devices                      United Microelectronics Corporation

         /s/ Hector Ruiz                             /s/ Robert Tsao
------------------------------------        ------------------------------------
    Hector Ruiz, President & COO                Robert Tsao, Chairman and CEO

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       12

<PAGE>

Exhibit List:

1.1  UMC Technology Roadmap and Target Time table ***** CMOS platform++

2.1  AMD Technology Roadmap and Target Time Table high performance capability &
      associated transistor-specific modules++

3.1  Working Group Team Members, Team Leaders and Executive Sponsors

Attachment: Miscellaneous Provisions &  Definitions Attachment

----------
++ Confidential treatment has been requested for Exhibits 1.1 (two pages) and
2.1 (one page) in their entirety.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       13

<PAGE>

EXHIBIT 3.1

Working Group Team Members, Leaders & Executive Sponsors
--------------------------------------------------------

<TABLE>
<CAPTION>
                       AU JDP WORKING GROUP TEAMS                                     Exhibit 3.1
                      ---------------------------                                     -----------

      Node                        Project/Effort                 AMD Mgt                UMC Mgt
---------------------------------------------------------------------------------------------------
<S>                <C>                                           <C>                  <C>
     Overall       Chief Executive Advocate                       *****                  *****
---------------------------------------------------------------------------------------------------
     Overall       AU JDP Executive Sponsor                       *****                  *****
---------------------------------------------------------------------------------------------------
     Overall       Management Leader for AU JDP                   *****                  *****
---------------------------------------------------------------------------------------------------
      *****        *****                                          *****                  *****
---------------------------------------------------------------------------------------------------
      *****        *****                                          *****                  *****
---------------------------------------------------------------------------------------------------
      *****        - Tech/Module Definition, Pgm plan             *****                  *****
                   - Integration Work
                   - Transistor Work
---------------------------------------------------------------------------------------------------
      *****        - Research                                     *****                  *****
---------------------------------------------------------------------------------------------------
    agreement      JV Def., LoI -> (MOU ->) Contract              *****                  *****
   development
---------------------------------------------------------------------------------------------------
   coordinator     Assignee/staffing                              *****                  *****
---------------------------------------------------------------------------------------------------
     overall       *****                                          *****                  *****
---------------------------------------------------------------------------------------------------
     overall       Prod Eng./Prod. Roadmap                        *****                  *****
---------------------------------------------------------------------------------------------------
      *****        *****                                          *****                  *****
---------------------------------------------------------------------------------------------------
</TABLE>

     UMC/AMD Confidential Information
     --------------------------------

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       14

<PAGE>

                MISCELLANEOUS PROVISIONS & DEFINITIONS ATTACHMENT

DEFINITIONS

     "Applicable Law" means the laws of the State of California, without regard
to that body of law which pertains to conflicts and/or choice of law and
excluding the UN Convention on Contracts for International Sales of Goods,
provided however that for purposes of the JVA "Applicable Law" means the laws of
Singapore, without regard to that body of law which pertains to conflicts and/or
choice of law and excluding the UN Convention on Contracts for International
Sales of Goods.

     "AU" means the joint venture to be formed under Singapore law pursuant to
the JVA entered between AMD and UMC.

     "AU Business Plan" means the business plan to be prepared by AU pursuant to
the JVA.

     "AU JDP" means the joint development program in which UMC and AMD
participate pursuant to the terms of the JDA.

     "Advanced MPU Processes" shall mean the jointly developed high performance
MPU processes: at the ***** technology node, at the ***** technology node, and
as may be agreed, pursuant to the AU JDP, including without limitation, all
recipes, specifications, and flows reasonably used by either party to run such
processes in their respective manufacturing facilities.

     "Delegates" means those engineers from AMD and/or UMC assigned or delegated
to the facilities of the other party (or to the facilities of AU) to work in the
AU JDP (if from AMD, these engineers will be "AMD Delegates" and if from UMC,
these engineers will be "UMC Delegates").

     "JDA" means the Joint Development Agreement entered between AMD and UMC.

     "JDP Working Group" means the working groups and teams assigned by each
party pursuant to Clauses 3.1 and 3.2 of the JDA.

     "Joint Inventions" means all inventions, conceptions, know-how and/or
technology conceived jointly by the parties pursuant to their efforts in the AU
JDP (including without limitation, rights to patents with respect to such
subject matter).

     "JVA" means the Joint Venture Agreement entered into between AMD and UMC
with respect to the venture currently named "AU Pte Ltd."

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       15

<PAGE>

     "Manufacturing Agreement(s)" shall mean the UMC-AMD Comprehensive Foundry
Agreement and the Manufacturing Agreement(s) to be entered by AMD and AU
pursuant to the JVA.

     "Necessary Background" means all technology and know-how (i) which either
AMD and/or UMC have the ability to disclose to the other without violating
obligations to an unaffiliated third party, and (ii) which is reasonably useful
to enable a reasonably skilled team to participate in the JDP Working Groups as
intended and to utilize UMC's Advanced CMOS Platforms and Advanced MPU Processes
in their preferred manner.

     "Party" shall refer to AMD, UMC, UMCi or AU as applicable, and "Parties"
shall mean each Party (AMD, UMC, UMCi and AU) which is signatory to the Party
Agreement involved.

     "Party(ies) Agreements" means and includes the JVA, the JDA and the
Manufacturing Agreement(s).

     "Party Inventions" means all inventions, conceptions, know-how and/or
technology developed and/or contributed by one party (or its employees or
consultants) without joint contribution by the other.

     "UMC's Advanced CMOS Platforms" shall mean those general purpose CMOS
technology platforms developed solely or jointly by UMC at the ***** and *****
technology nodes with specifications and time of introduction competitive with
the ITRS roadmap, including without limitation, all recipes, specifications, and
flows reasonably used by UMC to run such processes in UMC's manufacturing
facilities, to the extent such technology is owned by UMC or which UMC has the
right to sublicense without the obligation to pay royalties to third parties.

MISCELLANEOUS AND GENERAL PROVISIONS

1.  During the term of the AU JDP, neither party will solicit for employment any
person at the time employed by and/or working on behalf of the other.

2.  Neither party shall be liable for failure to perform, in whole or in part,
its obligations under this Agreement if such failure is caused by any event or
condition not reasonably within the control of the affected party, including,
without limitation, by events of nature, fire, flood, typhoon, earthquake,
explosion, strikes, labor troubles or other industrial disturbances, unavoidable
accidents, war (declared or undeclared), acts of terrorism, sabotage, embargoes,
blockage, acts of governmental, judicial, administrative, military or other
authorities, riots, insurrections, or any other cause beyond the control of the
parties; provided, that the affected party promptly notifies the other party of
the occurrence of the event of force majeure and takes all reasonable steps
necessary to minimize the disruption to the other party and to resume
performance of its obligations so interfered with.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       16

<PAGE>

3.  [Intentionally omitted]

4.  [intentionally omitted]

5.  AS A SEPARATE LIMITATION, IN NO EVENT WILL ANY PARTY BE LIABLE TO THE OTHER
(i) FOR COSTS OF SUBSTITUTE GOODS, (ii) FOR ANY SPECIAL, CONSEQUENTIAL,
INCIDENTAL OR INDIRECT DAMAGES, OR (iii) FOR LOSS OF USE, OPPORTUNITY, MARKET
POTENTIAL, GOODWILL AND/OR PROFIT ON ANY THEORY (CONTRACT, TORT, FROM THIRD
PARTY CLAIMS OR OTHERWISE), provided however that in the event of material
breach by UMC and/or AU which is not cured within sixty days of written notice
from AMD that such breach was causing AMD to search for second sources for the
product involved, UMC and/or AU (whichever was the breaching party) shall be
responsible for *****. THESE LIMITATIONS SHALL APPLY NOTWITHSTANDING ANY FAILURE
OF ESSENTIAL PURPOSE OR OF ANY FAILURE OR INADEQUACY OF ANY REMEDY. Each Party
has consulted with counsel concerning their respective agreements and AU, and
enters into the JVA, the JDA and the Manufacturing Agreements with full advice
and understanding and accepting the risks involved.

6.  Except as expressly stated in the JVA, the JDA and/or the Manufacturing
Agreement(s) no Party makes any warranties or representations (express, implied
or statutory). THE PARTIES EXPRESSLY DISCLAIM ALL SUCH OTHER WARRANTIES,
INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR PARTICULAR PURPOSE. Without limiting the foregoing, except as
expressly stated in the Party Agreements, there are no representations and/or
warranties concerning the subject matter of such Party Agreements, and/or
relating to AU of any sort or manner, and each Party expressly agrees that it is
not relying upon any such other representations and/or warranties. Each Party
has consulted with counsel concerning such Agreements and AU, and enters into
the Party Agreements with full advice and understanding and accepting the risks
involved.

     6.1 Notwithstanding anything to the contrary (whether in the Party
Agreements or elsewhere), nothing contained in the Party Agreements, and/or in
the AU Business Plan shall be or be construed as:

          6.1.1 a warranty or representation as to the validity, utility,
     suitability or economic viability of this opportunity or of any
     intellectual property or technology except as expressly stated in Clause
     6.2 and/or in the Manufacturing Agreement(s);

          6.1.2 a warranty or representation that any manufacture, sales, use or
     other disposition of products to be manufactured by AU and/or UMC will be
     free from infringement of patents, utility models and/or design patents
     other than those under which licenses have been granted hereunder and/or
     except as expressly stated in Clause 6.2 and/or in the Manufacturing
     Agreement(s);

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       17

<PAGE>

          6.1.3 a warranty or representation that AU will be successful, that AU
     will realize and/or fulfill any of its business plans, that AU will return
     profit, or that the Parties will recover their investments (for purposes of
     this Clause 6.1.3, no express covenant or obligation in the JVA shall be
     eliminated and/or excluded by reason of it also being part of the AU
     Business Plan, nor shall this Clause 6.1.3 absolve AU from efforts required
     under the JVA to implement the AU Business Plan nor shall this Clause 6.1.3
     relieve any obligation under Clause 4.4 of the JV MOU or the provisions
     which implement that Clause in the JVA);

          6.1.4 conferring any right to use in advertising, publicity, or
     otherwise, any trademark, trade name or names of any Party, or any
     contraction, abbreviation or simulation thereof; and/or

          6.1.5 conferring by implication, estoppel or otherwise, any license or
     other right under any class or type of patent, utility model or design
     patent, provided however that each Party holding joint ownership rights to
     joint inventions according to the JDA shall, subject to the express
     limitations of and solely as expressly allowed under the JDA, have the
     right to grant licenses with respect to such jointly owned inventions
     without the consent of (and without any obligation to account to) any other
     Party.

7.  Without in any way limiting the provisions of the Party Agreements, each of
the Parties agrees that no products, items, commodities or technical data or
information obtained from a Party nor any direct product of such technical data
or information is intended to or shall be exported or reexported, directly or
indirectly, to any destination restricted or prohibited by Applicable Law
without necessary authorization by the Governmental Authorities, including
(without limitation) the Taiwanese Ministry of International Trade and Industry,
the United States Bureau of Export Administration (the "BEA") or other
Governmental Authorities of the United States and Taiwan with jurisdiction with
respect to export matters. Without limiting the generality of the foregoing,
each Party agrees that it will not, without authorization from the Office of
Export Licensing of the BEA, knowingly export or reexport to a destination
outside of the United States General License GTDR technical data or information
of United States origin subject to this Agreement, or the direct product
thereof, or the product of a plant or major component of a plant that is the
direct product thereof, without first providing any applicable export assurances
of the exporting party. Notwithstanding anything to the contrary, AMD will not
disclose to UMC and/or AU any information concerning processing, fabrication
and/or equipment which is subject to any applicable export restrictions without
first notifying UMC of these restrictions, and securing written consent from an
officer of UMC to the disclosure.

8.  DISPUTES

     8.1 Mediation:

          8.1.1 Each Party agrees that in the event of a dispute arising out of
     or in any way relating to any one or more of the Party Agreements, the
     parties shall attempt to

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       18

<PAGE>

resolve the dispute through mediation prior to instituting litigation or any
other adversary proceeding. A Party shall initiate a mediation by serving
written notice on the other party by facsimile and overnight mail. The parties
may select any mediator mutually agreeable to them. If the parties cannot agree
on a mediator within fifteen (15) days, they will, within five (5) days
thereafter submit a joint request for mediation to the San Francisco office of
the American Arbitration Association ("AAA") and request the AAA to select an
appropriate mediator with experience in resolving financial and commercial
disputes, preferably with experience in the semiconductor industry.

          8.1.2 The mediation session shall occur within thirty (30) days of the
     selection of the mediator unless the parties mutually agree to extend this
     time, and shall be scheduled for not less than one day. Each party agrees
     to send a representative with full settlement authority to the mediation.
     The mediation shall be in the English language and shall be conducted
     exclusively in Santa Clara County, California, United States of America.
     The parties agree to hold the content of the mediation in confidence and
     further agree that the mediator is disqualified and shall be excluded from
     testifying as a witness in litigation between the parties (except in
     proceedings to recover damages for actionable torts committed in the
     mediation). The parties further agree that the mediation shall be
     considered to be a form of settlement negotiations, the content of which
     shall not be admissible as evidence in any judicial proceeding (except in a
     proceeding to recover damages for actionable torts committed in the
     mediation). Each party shall bear its own expenses (including attorney
     fees) for mediation proceedings under the Party Agreements, and an equal
     share of the expenses of the mediator and, where applicable, the AAA. The
     parties agree that any refusal to mediate under this section is a breach of
     contract for which damages may be recovered in litigation between the
     parties. Except as provided in Section 8.2 below, if the party who
     ultimately prevails in any litigation institutes a court action or other
     adversary proceeding without first attempting mediation as required hereby,
     SUCH PREVAILING PARTY SHALL NOT BE ENTITLED TO ATTORNEYS' FEES OR COSTS
     THAT MIGHT OTHERWISE BE AVAILABLE TO IT UNDER THE PARTY AGREEMENTS, ANY
     APPLICABLE LAW OR COURT RULES.

     8.2 Litigation: In the event a dispute is not resolved by such mediation
within sixty days of written notice of mediation pursuant to Clause 8.1 (or in
the event a party refuses to participate in such a mediation), the parties shall
have the right to initiate a suit, action or other adversary proceeding before
the appropriate court exclusively within the jurisdiction of the courts of Santa
Clara County, California, or the United States District Courts for the Northern
District of California. In the event of such suit, action or other adversary
proceeding and solely for purposes of such an action or proceeding, the Parties
hereto (a) submit to the exclusive personal jurisdiction of the federal and
state courts in the State of California, and (b) expressly waive any right they
may have to a jury trial and agree that any such proceeding shall be tried by a
judge without a jury, and (c) expressly covenant not to bring any such suit or
claim before any other judicial tribunal. All defenses based on passage of time
shall be tolled from the date of timely written notice of mediation pursuant to
Section 8.1 above and, shall not resume until sixty days after such notice,
unless otherwise prohibited by law.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       19

<PAGE>

          8.2.1 Notwithstanding anything to the contrary, and subject to Section
     8.1 above, the parties may, without breach of Clause 8.2, seek appropriate
     judicial remedies from courts in Singapore having jurisdiction over such
     matters, to the extent reasonably necessary but only with respect to or
     concerning the JVA, corporate formalities, ownership of property, or other
     matters peculiar to Singapore law and/or locations or property in
     Singapore.

     8.3 Applicable Law: The Party Agreements shall be governed by, construed,
enforced and interpreted in accordance with the internal substantive laws of the
State of California applicable to agreements to be made and to be performed
solely within such State, without giving effect to any conflicts or choice of
laws principles which otherwise might be applicable and excluding the United
Nations Convention on Contracts for the Sale of Goods provided however that the
JVA shall be governed by, construed, enforced and interpreted in accordance with
the internal substantive laws of Singapore applicable to agreements to be made
and to be performed solely within such jurisdiction, without giving effect to
any conflicts or choice of laws principles which otherwise might be applicable
and excluding the United Nations Convention on Contracts for the Sale of Goods.

     8.4 Interim Relief: Nothing in this Section 8 shall be construed to
preclude any party from seeking injunctive or other provisional relief in order
to prevent irreparable harm pending mediation, provided however that such relief
may only be sought within the appropriate judicial forum as provided in section
8.2 above. In the event a party seeks interim relief without first attempting
mediation, such party shall not forfeit its entitlement to legal fees and costs
that would otherwise be available to it only if such party initiates mediation
within fifteen (15) days after initiating the action seeking interim relief. A
request to a court for interim relief shall not be deemed a waiver of the
obligation to mediate.

     8.5 Legal Fees and Costs: Except as otherwise provided herein, the
substantially prevailing party in any proceeding brought by one party against
the other shall be entitled, in addition to any other rights and remedies it may
have, to reimbursement for the expenses reasonably incurred by it in such
proceeding, including but not limited to court costs, reasonable attorneys'
fees, reasonable costs, reasonable expenses of expert witnesses, reasonable
costs of appeal, and any other reasonable out-of-pocket expenses.
Notwithstanding anything to the contrary, neither party will be entitled to
recover or claim from the other any expenses incurred in connection with and/or
pursuant to any mediation efforts under Section 8.1.

9.  Both parties agree that the details connected with the JDA, JVA and
Manufacturing Agreements will not be published or disclosed without the other
party's written permission or as required by Applicable Law or regulation,
provided however that this Clause 9 shall not restrict a party from repeating
disclosures made by the other. On or before February 8, the parties will
negotiate mutually acceptable terms for a

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       20

<PAGE>

nondisclosure agreement pursuant to the JDA, and when negotiated, that JDP NDA
will be attached as an Exhibit and made part of the JDA.

10.  All notices required or permitted to be given under the Party Agreements
shall be in writing by first class certified or registered airmail, postage
prepaid or by telex or telefax, if confirmed or acknowledged, to the address
specified below or to such other address as may be specified in writing by the
addressed party to the other party in accordance with this Section 10:

If to UMC:
         United Microelectronics Corporation
         No. 3 Li Hsin Road 2
         Science-Based Industrial Park
         Hsin-Chu City, Taiwan
         R.O.C.
         Attention:        Chairman's Office
         Tel:              +886 3 578-2258
         Fax:              +886 3 577-4767  and to +886 2 2703-3839

If to AMD:
         Advanced Micro Devices, Inc.
         One AMD Place
         P.O. Box 3453
         Sunnyvale, California  94088-3453
         U.S.A.
         Attention:        General Counsel
         Tel (USA):        408/749-2202
         Fax (USA):        408/774-7002

If to UMCi:
         UMCi Pte Ltd.
         6 Temasek Blvd
         #26-01 SuntecTower Four
         Singapore 038986
         Attention: President
         Tel: +65 836-0886
         Fax: +65 836-3767

Each such notice or other communication shall for all purposes be treated as
effective or as having been given as follows: (i) if delivered in person, when
delivered; (ii) if sent by airmail, at the earlier of its receipt or at 5 p.m.,
local time of the recipient, on the seventh day after deposit in a regularly
maintained receptacle for the deposition of airmail, as the case may be; and
(iii) if sent by recognized courier service, on the date shown in the written
confirmation of delivery issued by such delivery service. Either party may
change the address and/or addressee(s) to whom notice must be given by giving

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       21

<PAGE>

appropriate written notice at least seven (7) days prior to the date the change
becomes effective.

11.  The Party Agreements and their Exhibits, all of which are incorporated
herein by reference, set forth the entire understanding between UMC and AMD with
respect to the subject matter hereof and merges all prior agreements, dealings,
negotiations, promises, representations and communications. The terms of the
Party Agreements shall govern any sales contract between the parties for the
sale and purchase of the wafers as well as any and all exchanges of confidential
information regardless of any other document signed and/or executed or agreement
made prior to January 31, 2002. No modification, alteration or amendment of the
Party Agreements or their Exhibits (whether express, implied, by custom, course
of dealing or otherwise) shall be effective unless in writing and signed by both
parties.

12.  Except as expressly permitted under their terms none of the Party
Agreements nor any of the rights and obligations created hereunder may be
assigned, transferred, pledged, or otherwise encumbered or disposed of, in whole
or in part, whether voluntarily or by operation of law or otherwise, by any
party without the prior written consent of the other party, provided however
that the Party Agreements and the rights and obligations thereunder may be
assigned in whole to a successor to all or substantially all of the assets or
business of a Party hereto. The Party Agreements shall inure to the benefit of
and be binding upon the parties' permitted successors and assigns.

13.  The Party Agreements shall be governed by and under the Applicable Law. If
any term or provision of any Party Agreement shall be determined to be invalid
or unenforceable under Applicable Law, such provision shall be deemed severed
from such agreement, and a reasonable valid provision to be mutually agreed upon
shall be substituted. In the event that no reasonable valid provision can be so
substituted, the remaining provisions of such Agreement shall remain in full
force and effect, and shall be construed and interpreted in a manner that
corresponds as far as possible with the intentions of the parties as expressed
in such Agreement.

14   TERM AND TERMINATION

     14.1 The term of the Party Agreements will be for period stated in the
specific agreement involved.

     14.2 In the event any material breach of a Party Agreement by either party
is not corrected within sixty (60) days after delivery of written notice
describing such breach, the particular Party Agreement may be terminated
immediately upon further written notice of termination from the non-breaching
party, provided however that this Clause 14.2 shall not waive or relieve any
party from the requirements of Clause 8.

     14.3 Either party shall also have the right to terminate such Party
Agreement forthwith by giving written notice of termination to the other party
at any time, upon or after:

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       22

<PAGE>

          14.3.1 the filing by such other party of a petition in bankruptcy or
     insolvency; or

          14.3.2 any adjudication that such other party is bankrupt or
     insolvent; or

          14.3.3 the filing by such other party of any legal action or document
     seeking reorganization, readjustment or arrangement of its business under
     any law relating to bankruptcy or insolvency; or

          14.3.4 the appointment of a receiver or bankruptcy trustee for all or
     substantially all of the property of such other party; or

          14.3.5 the making by such other party of any general assignment for
     the benefit of creditors; or

          14.3.6 the institution of any proceedings for the liquidation or
     winding up of such other party's business or for the termination of its
     corporate charter.

     14.4 The exclusions and limitations of Clauses 5 and 6 will survive the
termination of the applicable Party Agreement, and the exclusions and
limitations of liability and of remedies shall apply notwithstanding any claim
of a failure of any one or more remedies to accomplish their purpose. THE
PARTIES EXPRESSLY WAIVE AND RELINQUISH ANY CONTRARY RIGHTS WITH RESPECT TO THE
SUBJECT MATTER OF CLAUSES 5 AND 6 UNDER ANY AGREEMENT, AND/OR APPLICABLE LAW,
DECISION, AND/OR CUSTOM OR PRACTICE.

15.  MISCELLANEOUS--Miscellaneous

     15.1 The failure of any Party to enforce, or the delay by any Party in
enforcing any of its rights under the Party Agreements shall not be deemed a
waiver or a containing waiver of such rights or a modification of any Party
Agreement, and such party may, within the time provided by applicable law,
commence appropriate proceedings to enforce any and/or all such rights.

     15.2 The Clause headings in the Party Agreements are for convenience only
and do not define or limit nor will they be used to construe the content of such
Clauses.

     15.3 Each Party expressly represents and warrants that it is free to enter
into the Party Agreements and that it has not made and will not make any
creations or commitments in conflict with the provisions of the Party
Agreements, or which reasonably might interfere with the full and complete
performance of its obligations under the Party Agreements. Each Party further
represents and warrants that the Party Agreements, and the performance of its
respective obligations under the Party Agreements, and the consummation of the
transactions contemplated under the Party Agreements have been duly authorized
and approved by all necessary action, and all necessary consents or permits have
been obtained, and neither the execution of the Party Agreements nor the
performance of the Party's obligations under the Party Agreements will violate
any term

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       23

<PAGE>

or provision of any valid contract or agreement to which such party is subject
and/or by which such party is bound. No further actions or consents are
necessary to make the Party Agreements valid and binding contract, enforceable
against the respective parties in accordance with their terms.

     15.4 No Party shall be entitled to act on behalf of and/or to bind any one
or more of the others.

     15.5 The Party Agreements, and any one or more of them, may be executed in
any number of counterparts, all of whom when taken together shall constitute a
single instrument.

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as *****. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                       24<PAGE>

                                  Exhibit 10.27

                                    SUBLEASE

          THIS SUBLEASE (the "Sublease") is made and entered into this 17th day
of April 2002, by and between ION Networks, Inc. ("Sublandlord") and Multipoint
Communications ("Subtenant").

          1.   BASIC LEASE PROVISIONS.

               A.  Property Address: 1551 South Washington Avenue, Piscataway,
New Jersey 08854

               B.  Subtenant's Address (for notices): until the Commencement
Date: One Woodbridge Center Drive, Suite 811, Woodbridge, New Jersey 07095;
thereafter, at the Premises subleased hereunder

               C.  Sublandlord's Address (for notices): ION Networks, Inc., 1551
South Washington Avenue, Piscataway, New Jersey 08854, Attention: Corporate
Counsel

               D.  Landlord: Washington Plaza L.L.C.

               E.  Landlord's Address (for notices): c/o Linque Management
Company, Inc., 301 Route 17, 19/th/ Floor, Rutherford, New Jersey 07070,
Attention: Joel J. Bergenstein, Vice President, with a copy to Earp Cohn PC, 222
Haddon Avenue, Westmont, New Jersey 08108, Attention: Richard B. Cohn, Esq.

               F.  Identification of Original Lease and all amendments thereto:
Lease between Washington Plaza Associates, L.P., as Landlord, and Microframe,
Inc., as Tenant, dated February 18, 1999 (the "Original Lease"), as amended by
First Amendment to Lease between Washington Plaza Associate, L.P., as Landlord,
and ION Networks, Inc. (successor by merger to Mircroframe, Inc.), as Tenant
dated August 20, 1999 (the "First Amendment") and Second Amendment to Lease
between Washington Plaza Associate, L.P., as Landlord, and ION Networks, Inc.,
as Tenant dated November 9, 2001 (the "Second Amendment")

               G.  Sublease Term: Two years from Commencement Date

               H.  Commencement Date: January 1, 2002

               I.  Expiration Date: December 31, 2003

               J.  Base Rent (including utility and service charges) as follows:

                          Rent            Utility Charges       Service Charges
                          Per Month       Per Month             Per Month
                          ---------       ---------             ---------
1/1/02 - 3/31/02          $     0         $    0                $    0

4/1/02 - 9/30/02          $ 5,200         $  750                $  500

10/1/02 - 12/31/03        $10,400         $1,500                $1,000

The Base Rent for each month shall be paid on the first day of the month.

               K.  Payee of Rent: ION Networks, Inc.

               L.  Address for Payment of Rent: 1551 South Washington Avenue,
Piscataway, New Jersey 08854

               M.  Sublease Share: Approximately 5,400 square feet of rentable
space

<PAGE>

          N.   Description of Premises: Portion of 1st Floor at 1551 South
Washington Avenue, Piscataway, New Jersey 08854, as shown on Exhibit A annexed
hereto

          O.   Subtenant's Use: General and executive offices

          P.   Brokers: Aaron Benjamin Commercial Realty

     2.   Original LEASE. Sublandlord is the Tenant under a lease (the "Original
Lease") with the Landlord identified in Section 1(D), as specified in Section
1(F). Sublandlord represents to Subtenant that (a) Sublandlord has delivered to
Subtenant a full and complete copy of the Original Lease (with certain
provisions thereof not relevant to this Sublease omitted), (b) the Original
Lease is, as of the date hereof, in full force and effect, and (c) to
Sublandlord's knowledge, no event of default has occurred under the Original
Lease.

     3.   SUBLEASE. Sublandlord, for and in consideration of the rents herein
reserved and of the covenants and agreements herein contained on the part of
Subtenant to be performed, hereby subleases to Subtenant, and Subtenant accepts
from Sublandlord, certain space described in Section 1(N) (the "Premises")
located in the building known as 1551 South Washington Avenue, Piscataway, New
Jersey 08854 (the "Building").

     4.   TERM. The term of this Sublease (the "Term") shall commence on the
date specified in Section 1(H) (the "Commencement Date")). The Term shall expire
on the date (the "Expiration Date") specified in Section 1(I), unless sooner
terminated as provided elsewhere in this Sublease or by law.

     5.   POSSESSION. The Premises are to be delivered by Sublandlord to
Subtenant AS IS. Taking of possession by Subtenant shall be deemed conclusively
to establish that Subtenant has accepted the condition of the Premises.

     6.   SUBTENANT'S USE. The Premises shall be used and occupied only for the
Subtenant's Use set forth in Section 1(O).

     7.   RENT. Beginning on the Base Rent Commencement Date set forth in
Section I(J), Subtenant agrees to pay the Base Rent set forth in Section 1(J) to
the Payee specified in Section 1(K), at the address specified in Section 1(L),
or to such other payee or at such other address as may be designated by notice
in writing from Sublandlord to Subtenant, without prior demand therefor and
without any deduction whatsoever. All charges, costs and sums required to be
paid by Subtenant to Sublandlord under this Sublease in addition to Base Rent
shall be deemed "Additional Rent", and Base Rent and Additional Rent shall
hereinafter collectively be referred to as "Rent". Subtenant's covenant to pay
Rent shall be independent of every other covenant in this Lease. If Rent is not
paid when due, Subtenant shall pay, relative to the delinquent payment, an
amount equal to the sum which would be payable by Sublandlord to Landlord for an
equivalent late payment under Section 11.3 of the Original Lease.

     8.   SECURITY DEPOSIT. Prior to the Commencement Date, Subtenant shall pay
to Sublandlord the amount of $12,900.00 as security for the full and punctual
performance by Subtenant of all of the terms and conditions of this Sublease
(such amount, together with any interest earned thereon, if any, and/or any
funds drawn by Sublandlord thereunder being called the "Security Deposit").

          A.   If Subtenant defaults hereunder beyond the expiration of any
applicable grace, notice or cure period, Sublandlord may use, apply to retain
the whole or any part of the Security Deposit to the extent required for the
payment of any Base Rent or any other sum(s) as to which Subtenant is in default
or for any sum(s) which Sublandlord may expend or may be required to expend by
reason of Subtenant's default pursuant hereto, including any damages or
deficiency with respect to the reletting of the Premises, whether accruing
before or after summary proceedings or other re-entry by Sublandlord. In the
case of every such use, application or retention, Subtenant shall, on demand,
pay to Sublandlord the sum so used, applied or retained such that the Security
Deposit shall be replenished to its former amount.

          B.   If Subtenant shall fully and punctually comply with all of the
terms and conditions of this Sublease, then the Security Deposit (or portion
thereof to which Subtenant is entitled) shall be returned or paid over to
Subtenant (i) once half (1/2) within fifteen days after the expiration or
termination of this Sublease and the surrender of the Premises to Sublandlord in
accordance herewith and (ii) one half (1/2) within ninety (90) days after the
expiration or termination of this Sublease and the surrender of the Premises to
the Sublandlord in accordance herewith.

     9.   Additional Consideration. Subtenant shall issue shares to Sublandlord
totaling the value of $77,400.00. These shares shall be based on the per share
price of Subtenant's common stock as priced in the first round of institutional
financing which is scheduled to close (the "Closing") on or before June 30,
2002. These shares shall have the registration rights as

<PAGE>

other shares issued at the Closing. In the event the Closing does not occur by
June 30, 2002, the Subtenant shall pay to Sublandlord, with the Base Rent on a
monthly basis, an amount equal to $4,300 ($77,400 divided by 18) starting from
July1, 2002 through December 31, 2003.

     10.  SUBTENANT'S OBLIGATIONS. Subtenant shall be responsible for, and shall
pay the following:

          A.   All utility consumption costs, including without limitation,
electric and other charges incurred in connection with Lighting and providing
electric power to Premises. Subtenant shall hold Sublandlord harmless and
indemnify, including reasonable attorney's fees and costs, if necessary, to
enforce said obligations, from all costs or expenses Sublandlord may incur from
Subtenant's failure to pay utility bills or to perform any of its obligations
with respect to the purchase of utilities. With respect to electricity, the Base
Rent hereunder includes a charge for consumption on a "rent inclusion" basis
(the "Rent Inclusion Factor"). The Base Rent shall be subject to adjustment
based on changes in Sublandlord's cost of electricity as billed by Landlord or
surveys of Subtenant's usage of electricity in the Premises that Sublandlord may
perform from time to time. Without limiting the generality of the foregoing, the
parties agree that the Rent Inclusion Factor under this Sublease is based on
Subtenant's projected reasonable use in the Premises of electricity for
lighting, light office equipment and the usual small business machines,
including personal computer, fax machines and small copying machines. If
Subtenant's use of electricity exceeds the projection, Sublandlord may cause the
Rent Inclusion Factor to be increased (and the Base Rent increased by the same
amount) pursuant to this Section 10A to reflect Subtenant's actual consumption
of electricity. Notwithstanding the foregoing Subtenant shall have no obligation
for any payments required to be made by Sublandlord pursuant to Article 27 of
the Original Lease.

          B.   All maintenance, repairs and replacements to the Premises and its
equipment, to the extent Sublandlord is obligated to perform the same under the
Original Lease.

          C.   The cleaning of the Premises in excess of building standard
cleaning, and all costs and expenses relating thereto.

          D.   Any costs of additional or supplemental building services that
Subtenant may desire, including, without limitation, additional or supplemental
heating, ventilation and air conditioning (whether in the form of additional
capacity, after-hours service or otherwise).

          E.   Subtenant shall indemnify and hold harmless Sublandlord and any
Sublandlord Party (defined below) from and against any and all claims arising
from or in connection with (i) the conduct or management of the Premises or of
any business therein, or any work or thing whatsoever done, or any condition
created (other than by Sublandlord or any Sublandlord Party) in or about the
Premises during the Term; (ii) any negligence or willful act or omission of
Subtenant or any Subtenant Party (as defined below); (iii) any accident, injury
or damage whatsoever (except to the extent caused by the negligence or willful
misconduct of Sublandlord or SublandlordParty) occurring in, at or upon the
Premises; and (iv) any breach or default by Subtenant under this Sublease;
together with all costs, expenses and liabilities incurred in or in connection
with each such claim, or any action or proceeding brought thereon, including all
reasonable attorneys' fees and expenses.

"Sublandlord Party" is defined as (1) any principal, partner, member, officer
stockholder, director, employee or agent of the Sublandlord or of any partner or
member of any partnership constituting Sublandlord, disclosed or undisclosed,
(2) any underlying lessor, or any principal, partner, member, officer,
stockholder, director, employee or agent thereof, and (3) any mortgagee or any
principal, partner, member, officer, stockholder, director, employee or agent
thereof.

"Subtenant Party" is defined as (x) any principal, partner, member, officer,
stockholder, director, employee or agent of Subtenant or of any partner or
member of any partnership constituting Subtenant, disclosed or undisclosed, or
(y) any subtenant of Subtenant or any party claiming by, through or under
Subtenant, or any principal, partner, member, officer, stockholder, director,
employee or agent of such subtenant or such other party.

     11.  QUIET ENJOYMENT. Sublandlord represents that it has full power and
authority to enter into this Sublease, subject to the consent of Landlord. So
long as Subtenant is not in default in the performance of its covenants and
agreements in this Sublease, Subtenant's quiet and peaceable enjoyment of the
Premises shall not be disturbed or interfered with by Sublandlord, or by any
person claiming by, through, or under Sublandlord.

     12.  SUBTENANT'S INSURANCE. Subtenant shall procure and maintain, at its
own cost and expense, such liability insurance as is required to be carried by
Sublandlord under the Original Lease, naming Sublandlord, as well as Landlord,
as additional insureds, in the manner required therein and such property
insurance as is required to be carried by Sublandlord under the Original Lease
to the extend such property insurance pertains to the Premises. Subtenant shall
furnish

<PAGE>

to Sublandlord a certificate of Subtenant's insurance required hereunder not
later than five (5) days prior to Subtenant's taking possession of the Premises.
Each party hereby waives claims against the other for property damage provided
such waiver shall not invalidate the waiving party's property insurance; each
party shall attempt to obtain from its insurance carrier a waiver of its right
of subrogation. Subtenant hereby waives claims against Landlord and Sublandlord
for property damage to the Premises or its contents if and to the extent that
Sublandlord waives such claims against Landlord under the Original Lease.
Subtenant agrees to obtain, for the benefit of Landlord and Sublandlord, such
waivers of subrogation rights from its insurer as are required of Sublandlord
under the Original Lease. Sublandlord agrees to use reasonable efforts in good
faith to obtain from Landlord a waiver of claims for insurable property damage
losses and an agreement from Landlord to obtain a waiver of subrogation rights
in Landlord's property insurance, if and to the extent that Landlord waives such
claims against Sublandlord under the Original Lease or is required under the
Original Lease to obtain such waiver of subrogation rights.

     13.  ASSIGNMENT OR SUBLETTING

          A.   Subtenant shall not (i) assign, convey, mortgage or otherwise
transfer this Sublease or any interest under it; (ii) allow any transfer thereof
or any lien upon Subtenant's interest by operation of law; (iii) further sublet
the Premises or any part thereof; or (iv) permit the occupancy of the Premises
or any part thereof by anyone other than Subtenant. Without limiting the
generality of the foregoing, Subtenant shall not violate or permit a breach of
the provisions of Article 9 of the Original Lease.

          B.   Should Subtenant's interest in this Sublease be assigned, or if
the Premises or any part hereof be sublet or occupied by anyone other than
Subtenant, SubLandlord may collect rent from the assignee, or occupant and apply
the net amount collected to Base Rent and all Additional Rent herein reserved,
but no such assignment, subletting, occupancy or collection shall be deemed a
waiver of the provisions of this Section 13 or of any default hereunder or the
acceptance of the assignee, or occupant as Subtenant, or a release of any of the
covenants, conditions, terms and provisions on the part of Subtenant to be
performed or observed.

     14.  RULES. Subtenant agrees to comply with all rules and regulations that
Landlord has made or may hereafter from time to time make for the Building (the
"Building Rules"). Nothing in this Sublease or the Original Lease shall be
construed to impose upon Sublandlord any duty or obligation to enforce the
Building Rules against any other tenant, subtenant, or any other person, and
Sublandlord shall not be liable to Subtenant for violation of the Building Rules
by any other tenant, subtenant or any other person.

     15.  REPAIRS AND COMPLIANCE. Subtenant shall promptly pay for the repairs
set forth in Section 10(B) hereof and Subtenant shall, at Subtenant's own
expense, comply with all laws and ordinances, and all orders, rules and
regulations of all governmental authorities and of all insurance bodies and
their fire prevention engineers at any time in force, applicable to the Premises
or to Subtenant's particular use or manner of use thereof, except that Subtenant
shall not hereby be under any obligation to comply with any law, ordinance, rule
or regulation requiring any structural alteration of, or in connection with, the
Premises, unless such alteration is required by reason of Subtenant's particular
use or manner of use of the Premises, or a condition which has been created by
or at the sufferance of Subtenant, or is required by reason of a breach of any
Subtenant's covenants and agreements hereunder. As used herein "structure" or
"structural" shall have the definition ascribed to it in the Original Lease or
if no specific definition is given therein, "structure" or "structural" shall
mean that portion of the Building which is integral to the integrity of the
Building as an existing enclosed unit and shall, in any event, include footings,
foundation, outside walls, skeleton, bearing columns and interior bearing walls,
floor slabs, roof and roofing system.

     16.  FIRE OR CASUALTY OR EMINENT DOMAIN. In the event of a fire or other
casualty affecting the Building or the Premises, or of a taking of all or a part
of the Building or Premises under the power of eminent domain, Sublandlord may
exercise any right which may have the effect of terminating the Original Lease
without obtaining the consent of Subtenant, and such exercise shall not be
deemed to be a breach of any of the provisions of this Sublease. In the event
Sublandlord is entitled under the Original Lease to a rent abatement with
respect to the Premises, as a result of a fire or other casualty or as a result
of a taking under the power of eminent domain, then Subtenant shall be entitled
to the Sublease share of such rent abatement (and Sublandlord shall pay such
amount to Subtenant if Subtenant has prepaid the applicable rent) unless the
effect on the Premises of such fire or other casualty or such taking shall be
substantially disproportionate to the amount of the abatement, in which event
the parties shall equitably adjust the abatement as between themselves, based on
the relative impact of the fire or other casualty, or the taking, as the case
may be.

     17.  ALTERATIONS.  Subtenant shall not make any alteration in or additions
to the Premises ("Alterations") if Sublandlord is not authorized to do so under
the Original Lease. If Subtenant's proposed Alterations are non-structural in
nature, do not affect building systems and are authorized under the Original
Lease, Sublandlord's consent thereto shall nonetheless be required, but
Sublandlord's consent to such Alterations shall not be unreasonably withheld,
and if Sublandlord

<PAGE>

consents to such Alterations, Landlord's consent thereto shall nonetheless be
required, in which case Sublandlord shall request the consent of Landlord, if
such consent is required under the Original Lease. If Alterations by Subtenant
are permitted or consented to as aforesaid, Subtenant shall comply with all of
the obligations of Sublandlord contained in the Original Lease pertaining to the
performance of such Alterations. In addition, Subtenant shall indemnify, defend
and hold harmless Sublandlord and Landlord against liability, loss, cost,
damage, liens and expense impose on Sublandlord or Landlord arising out of the
performance of Alterations by Subtenant, including reasonable attorney's fees
and cost of legal proceedings.

     18.  SURRENDER. Upon the expiration of this Sublease, or upon the
termination of this Sublease or of Subtenant's right to possession of the
Premises, Subtenant will at once surrender and deliver up the Premises, together
with all improvements thereon, to Sublandlord in good condition and repair,
reasonable wear and tear excepted. Conditions existing because of Subtenant's
failure to perform maintenance, repairs or replacements as required of Subtenant
under this Sublease shall not be deemed "reasonable wear and tear". Said
Improvements shall include all plumbing, lighting, electrical, heating, cooling
and ventilating fixtures and equipment and other articles of personal property
used in the operation of the Premises (as distinguished from operations incident
to the business of Subtenant). Subtenant shall surrender to Sublandlord all keys
to the Premises and make known to Sublandlord the explanation of all combination
locks which Subtenant is permitted to leave on the Premises. All alterations in
or upon the Premises made by Subtenant shall become a part of and shall remain
upon the Premises upon such termination without compensation, allowance or
credit to Subtenant provided, however, that Sublandlord shall have the right to
require Subtenant to remove any Alterations made by Subtenant, or any portion
thereof. Said right shall be exercisable by Sublandlord giving written notice
thereof to Subtenant on or before a date thirty (30) days prior to such
expiration or on or before a date twenty (20) days after such termination.
Subtenant shall also remove any Alterations made by Subtenant, or portion
thereof, which Landlord may require Sublandlord to remove pursuant to the terms
of the Original Lease. In any such event, Subtenant shall restore the Premises
to their condition prior to the making of any such Alteration and shall repair
any damage occasioned by such removal or restoration. If Sublandlord or Landlord
requires removal of any Alteration made by Subtenant, or a portion thereof, and
Subtenant does not make such removal in accordance with this Section,
Sublandlord may remove the same (and repair any damage occasioned thereby), and
dispose thereof, or at its election, deliver the same to any other place of
business of Subtenant, or warehouse the same. Subtenant shall pay the costs of
such removal, repair, delivery and warehousing on demand.

     19.  REMOVAL OF SUBTENANT'S PROPERTY. Upon the expiration or earlier
termination of this Sublease. Subtenant shall remove Subtenant's articles of
personal property incident to Subtenant's business ("Trade Fixtures"); provided,
however, that Subtenant shall repair any injury or damage to the Premises which
may result from such removal, and shall restore the Premises to the same
condition as prior to the installation thereof. If Subtenant does not remove
Subtenant's Trade Fixtures from the Premises prior to the expiration or earlier
termination of this Sublease, Sublandlord may, as its option, remove the same
(and repair any damage occasioned thereby and restore the Premises as aforesaid)
and dispose thereof or deliver the same to any other place of business of
Subtenant, or warehouse the same, and Subtenant shall pay the cost of such
removal, repair, restoration, delivery or warehousing to Sublandlord on demand.

     20.  HOLDING OVER. Subtenant shall have no right to occupy the Premises or
any portion thereof after the expiration of this Sublease or after termination
of this Sublease or of Subtenant's right to possession in consequence of an
Event of Default hereunder. In the event Subtenant or any party claiming by,
through or under Subtenant holds over, Sublandlord may exercise any and all
remedies available to it at law or in equity to recover possession of the
Premises, and to recover damages, including without limitation, damages payable
by Sublandlord to Landlord by reason of such holdover, reasonable attorney's
fees and cost of legal proceedings. For each and every month or partial month
that Subtenant or any party claiming by, through or under Subtenant remains in
occupancy of all or any portion of the Premises after the expiration of this
Sublease or after termination of this Sublease or Subtenant's right to
possession, Subtenant shall pay, as minimum damages and not as a penalty,
monthly rental at a rate equal to 150% of the rate of Base Rent and Additional
Rent payable by Subtenant hereunder immediately prior to the expiration or other
termination of this Sublease or of Subtenant's right to possession. The
acceptance by Sublandlord of any lesser sum shall be construed as payment on
account and not in satisfaction of damages for such holding over.

     21.  ENCUMBERING TITLE. Subtenant shall not do any act which shall in any
way encumber the title of Landlord in and to the Property, nor shall the
interest or estate of Landlord in and to the Property, nor shall the interest or
estate of Landlord or Sublandlord be in any way subject to any claim by way of
lien or encumbrance, whether by operation of law by virtue of any express or
implied contract by Subtenant, or by reason of any other act or omission of
Subtenant. Any claim to, or lien upon, the Premises or the Property on which the
Premises is situated shall be invalid.

     22.  EVENTS OF DEFAULT.  Each of the following show constitute an "Event
of Default":

<PAGE>

          A.   If (i) Subtenant shall commence a case in bankruptcy, or under
the insolvency laws of any state, naming Subtenant as debtor, or (ii) any other
person shall commence a case in bankruptcy, or under the insolvency laws of any
state, naming Subtenant as a debtor, and such case shall not have been
discharged within sixty (60) days of the commencement thereof; or

          B.   If Subtenant shall make any assignment for the benefit of
creditors or shall apply for or consent to the appointment of a receiver for
Subtenant or any of the property of Subtenant; or

          C.   Subtenant shall admit in writing its inability to pay its debts
as they become due; or

          D.   The Premises are levied on by any revenue officer or similar
officer as a result of any act or omission of Subtenant or any person claiming
by, through or under Subtenant; or

          E.   A decree or order appointing a receiver of the property of
Subtenant shall be made and such decree or order shall not have been vacated,
stayed or set aside within sixty (60) days from the date of entry or granting
thereof; or

          F.   Subtenant shall abandon the Premises during the Termhereof; or

          G.   Subtenant shall default in any payment of Rent required to be
made by Subtenant hereunder when due as herein provided and such default shall
continue for five (5) days after notice thereof in writing to Subtenant; or

          H. Subtenant shall default in securing insurance or in providing
evidence of insurance as set forth in Section 12 of this Sublease or shall
default with respect to lien claims as set forth in Section 21 of this Sublease
and either such default shall continue for five (5) days after notice thereof in
writing to Subtenant; or

          I.   Subtenant shall, by its act or omission to act, cause a default
under the Original Lease and such default shall not be cured after prior notice
if it was practical for Sublandlord to timely give such prior notice to
Subtenant within the time, if any, permitted for such care under the Original
Lease, less three (3) days; or

          J.   A default shall occur under any guaranty of this Sublease; or

          K.   Subtenant shall default in any of the other covenants and
agreements herein contained to be kept, observed and performed by Subtenant, and
such default shall continue for thirty (30) days after notice thereof in writing
to Subtenant unless such default is not susceptible of cure within such thirty
day period and Subtenant has commenced to cure within such period and diligently
pursues the cure of such default but provided that such extended cure is
permitted by the Original Lease.

     23.  REMEDIES. Upon the occurrence of any one or more Events of Default,
SubLandlord may exercise any remedy against Subtenant (including recovery of
reasonable attorney's fees and cost of legal proceedings) which Landlord may
exercise for default by Sublandlord under the Original Lease, including, without
limitation, those set forth in Articles 17 and 18 of the Original Lease, and any
remedy available at law or in equity for a breach of this Sublease.

     24.  NOTICES AND CONSENTS. All notices, demands, requests, consents or
approvals which may or are required to be given by either party to the other
shall be in writing and shall be deemed given when received or refused if
delivered by hand or sent by United States registered or certified mail, postage
prepaid, return receipt requested or if sent by overnight courier service (a) if
to Subtenant, addressed to Subtenant at the address(es) specified in Section
1(B) or at such other place as Subtenant may from time to time designate by
notice in writing to Sublandlord or (b) if to Sublandlord, addressed to
Sublandlord at the address(es) specified in Section 1(C) or at such other place
as Sublandlord may from time to time designate by notice in writing to
Subtenant. Sublandlord and Subtenant, agree to promptly deliver to the other a
copy of each notice, demand, request, consent or approval from SubLandlord or
Subtenant to Landlord relating to this Sublease or the Premises, and promptly to
deliver to the other a copy of any notice, demand, request, consent or approval
received from Landlord relating to this Sublease or the Premises. Such copies
shall be delivered by hand or by overnight courier.

     25.  PROVISIONS REGARDING SUBLEASE. This Sublease and all the rights of
parties hereunder are subject and subordinate to the Original Lease. Each party
agrees that it will not, by its act or omission to act, cause a default under
the Original Lease. In furtherance of the foregoing, the parties hereby confirm,
each to the other, that it is not practical in this Sublease agreement to
enumerate all of the rights and obligations of the various parties under the
Original Lease and specifically to allocate those rights and obligations in this
Sublease agreement. Accordingly, in order to afford to Subtenant the benefits of
this Sublease and of those provisions of the Original Lease which by their
nature are intended to benefit the

<PAGE>

party in possession of the Premises, and in order to protect Sublandlord against
a default by Subtenant which might cause a default or event of default by
Sublandlord under the Original Lease:

          A.   Provided Subtenant shall timely pay all Rent when and as due
under this Sublease, Sublandlord shall pay, when and as due, all base rent,
additional rent and other charges payable by Sublandlord to Landlord under the
Original Lease;

          B.   Sublandlord shall perform its covenants and obligations under the
Original Lease which do not require for their performance possession of the
Premises and which are not otherwise to be performed hereunder by Subtenant on
Behalf of Sublandlord.

          C.   Subtenant shall perform all affirmative covenants and shall
refrain from performing any act which is prohibited by the negative covenants of
the Original Lease, where the obligation to perform or refrain from performing
is by its nature imposed upon the party in possession of the Premises. If
practicable, Subtenant shall perform affirmative covenants which are also
covenants of Sublandlord under the Original Lease at least five (5) days prior
to the date when Sublandlord's performance is required under the Original Lease.
Sublandlord shall have the right to enter the Premises and have appropriate
access to cure any default by Subtenant under this Section.

          D.   Sublandlord shall not agree to an amendment to the Original Lease
which would have an adverse effect on Subtenant's occupancy of the Premises or
its use of the Premises for their intended purpose, unless Sublandlord shall
first obtain Subtenant's prior written approval thereof, which approval shall
not be unreasonably withheld.

          E.   Sublandlord hereby grants to Subtenant the right to receive all
of the services and benefits with respect to the Premises which are to be
provided by Landlord under the Original Lease. Sublandlord shall have not duty
to perform any obligations of Landlord which are, by their nature, the
obligation of an owner or manager of real property. For example, Sublandlord
shall not be required to provide the services or repairs which the Landlord is
required to provide under the Original Lease. Sublandlord shall have no
responsibility for or be liable to Subtenant for any default, failure or delay
on the part of Landlord in the performance or observance by Landlord of any of
its obligations under the Original Lease (unless solely due to the act or
omission of Sublandlord), nor shall such default by Landlord affect this
Sublease or waive or defer the performance of any of Subtenant's obligations
hereunder. Notwithstanding the foregoing, the parties contemplate that Landlord
shall, in fact, perform its obligations under the Original Lease and in the
event of any default or failure of such performance by Landlord, Sublandlord
agrees that it will, upon notice from Subtenant, make demand upon Landlord to
perform its obligations under the Original Lease and, provided that Subtenant
specifically agrees to pay all costs and expenses of SubLandlord and provides
SubLandlord with security reasonably satisfactory to SubLandlord to pay such
costs and expenses, SubLandlord will take appropriate legal action to enforce
the Original Lease.

     26.  As provided in Article 11 of the Original Lease, in the event of
termination, re-entry or dispossess of Sublandlord by Landlord under the
Original Lease, Landlord may, at its option, take over all of the right, title
and interest of Sublandlord, as sublessor under this Sublease, and Subtenant, at
Landlord's option, shall attorn to Landlord pursuant to the then executory
provisions of this Sublease, except that Landlord shall not be:

               (i)    liable for any act or omission of Sublandlord under this
Sublease, or

               (ii)   subject to any defense or offsets which Subtenant may have
against Sublandlord, or

               (iii)  bound by any previous payment which Subtenant may have
made to Sublandlord more than thirty (30) days in advance of the date upon which
such payment was due, unless previously approved by Landlord except for the
prepayment of the rent, or

               (iv)   bound by any obligation to make any payment to or on
behalf of Subtenant, or

               (v)    bound by any obligation to perform any work or to make
improvements to the Premises, or

               (vi)   bound by any amendment or modification of this Sublease
made without Landlord's consent, or

               (vii)  bound to return Subtenant's security deposit until such
deposit has come into its actual possession and Subtenant would be entitled to
such security deposit pursuant to the terms of this Sublease.

<PAGE>

     27.  LANDLORD'S CONSENT. This Sublease and the obligations of the parties
hereunder are expressly conditioned upon Sublandlord's obtaining prior written
consent hereto from Landlord. Sublandlord shall be responsible for any fees
imposed by Landlord in connection with this request for consent to the sublease
except those specifically attributable to Subtenant. Subtenant shall promptly
deliver to Sublandlord any information set forth in Article 9 of the Original
Lease or otherwise reasonably requested by Landlord (in connection with
Landlord's approval of this Sublease) with respect to the nature and operation
of Subtenant's business and the financial condition of Subtenant and any
Guarantor. Sublandlord and Subtenant hereby agree, for the benefit of Landlord,
that this Sublease and Landlord's consent hereto shall not (a) create privity of
contract between Landlord and Subtenant; (b) be deemed to have amended the
Original Lease in any regard (unless Landlord shall have expressly agreed in
writing to such amendment); or (c) be construed as a waiver of Landlord's right
to consent to any assignment of the Original Lease by Sublandlord or any further
subletting of premises leased pursuant to the Original Lease, or as a waiver of
Landlord's right to consent to any assignment by Subtenant of this Sublease or
any sub-letting of the Premises or any part thereof. If Landlord fails to
consent to this Sublease within sixty (60) days after the execution and delivery
of this Sublease, then either party may terminate this Sublease by giving
written notice thereof to the other party at any time thereafter, before
Landlord grants such consent, and upon such notice all prepaid rent shall be
refunded to Subtenant.

     28.  BROKERAGE. Each party represents and warrants to the other that it has
had no dealings with any broker or agent in connection with this Sublease other
than the Brokers specified in Section 1(P), whose commission shall be split
50/50 between Sublandlord and Subtenant. The provisions of this Article shall
survive termination of this Lease.

     29.  BUILDING DIRECTORY. Subject to the provisions of Section 28.8 of the
Original Lease, Subtenant shall, during the Term, be entitled to five (5)
listing on the building directory for the Building.

     30.  GOVERNING LAW. This Sublease shall be governed by and construed in
accordance with the laws of the State of New Jersey.

     31.  RELATIONSHIPS BETWEEN PARTIES. Sublandlord and Subtenant shall be
independent and shall not be deemed to be partners, joint ventures or
co-employer of any Sublandlord Party or Subtenant Party, for the purpose of this
Sublease or for any other purpose.

     32.  JURY TRIAL WAIVER. Sublandlord and Subtenant hereby waive trial by
jury in any action or proceeding brought by either of the parties hereto against
the other on any matters arising out of or in any way connected with this
Sublease or Subtenant's use or occupancy of the Premises.

     33.  NUMBER AND GENDER. All terms used herein shall include any number or
gender, as the context may require.

     34.  NO WAIVER; CUMULATIVE REMEDIES, ETC.

          A.   No receipt of moneys by Sublandlord from Subtenant after the
termination or cancellation of this Sublease shall reinstate, continue or extend
the Term, or operate as a waiver of the right of Sublandlord to enforce the
payment of Base Rent or Additional Rent then due, or thereafter falling due, or
operate as a waiver of the right of SubLandlord to recover possession of the
Premises by proper suit, action, proceeding or remedy.

          B.   The failure of Sublandlord or Subtenant to enforce any agreement,
condition, covenant or term of this Sublease shall not be deemed to waive or
affect the right of Sublandlord or Subtenant to enforce the same or any other
agreement, condition, covenant or term of this Sublease in the event of a
subsequent default or breach.

          C.   The receipt by Sublandlord of Rent with knowledge of the breach
of any of the terms, covenants or conditions of this Sublease shall not be
deemed a waiver of such breach. The acceptance of any check or payment bearing
or accompanied, by any endorsement, legend or statement shall not be deemed an
accord and satisfaction. No surrender of the Premises by Subtenant (prior to the
expiration or termination of this Lease) shall be valid unless consented to in
writing by Sublandlord.

          D.   The rights and remedies given to Sublandlord in this Sublease are
distinct, separate and cumulative, and no one of them, whether or not exercised
by Sublandlord, shall be deemed to be in exclusion of any of the others, or of
any rights or remedies otherwise provided at law or in equity. In addition to
the other remedies in this Sublease, Sublandlord shall be entitled to the
restraint by injunction of the violation or attempted or threatened violation of
any of the terms, covenants or conditions of this Sublease or to a decree
compelling performance of any of such terms, covenants or conditions.

<PAGE>

          E.   This Sublease contains the entire agreement of the parties with
respect to the subject matter hereof, and any prior agreements or
understandings, oral or written, are merged herein. This Sublease may not be
extended, renewed, terminated or modified, nor may any provision hereof be
waived, except by an instrument in writing executed by the party against whom
enforcement of the same is sought.

          F.   If Subtenant request Sublandlord's consent to any matter under
this Lease, and Sublandlord fails or refuses to give such consent, Subtenant
shall not be entitled to any damages for any withholding by Sublandlord of its
consent; Subtenant's sole remedy therefor shall be an action for specific
performance, injunction or declaratory relief, and such remedy shall be
available only in those cases where this Sublease provides that Sublandlord
shall not unreasonably withhold its consent or where as a matter of law
Sublandlord may not unreasonably withhold its consent.

          G.   Subtenant shall look solely to the interest of Sublandlord in the
Premises leased under the Original Lease for the satisfaction of any right or
remedy of Subtenant for Sublandlord's failure to perform or comply with any of
Sublandlord's obligations, covenants or conditions under this Sublease, express
or implied, or under any law (including the collection of a judgment or other
judicial process). Neither Sublandlord nor any disclosed or undisclosed
principal of Sublandlord, or officer, director, stockholder, partner, member,
manager or agent of Sublandlord or of any such principal, nor any successor of
any of them, shall have any personal liability hereunder and no property or
assets of any of the foregoing persons shall be subject to levy, execution,
attachment or other enforcement procedure, for the satisfaction of Subtenant's
remedies under or with respect to this Sublease, the relationship of Sublandlord
and Subtenant hereunder, Subtenant's use and occupancy of the Premises or any
other liability of Sublandlord to Subtenant.

          H.   The headings herein are inserted only as a matter of convenience
and for reference and in no way define, limit or describe the scope or intent of
this Lease.

          I.   Sublandlord shall not deny Subtenant the right to access the
Premises 24 hours per day, seven days per week.

          J.   Wherever Sublandlord has agreed to request consent of Landlord,
Sublandlord shall use reasonable efforts (but without the requirement to incur
expense) to obtain such consent.

     35.  SUCCESSORS AND ASSIGNS. The agreements, terms covenants and conditions
herein shall bind and inure to the benefit of Sublandlord and Subtenant and
their respective succsessors and assigns.

                                   SUBLANDLORD
                                   ------------

                                   ION Networks, Inc.

                                   ________________________________
                                   By:
                                   Title:

                                   SUBTENANT
                                   ---------

                                   Multipoint Communications

                                   ________________________________
                                   By:
                                   Title:

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