SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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

                                   F O R M 6-K

       REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16
                   UNDER THE SECURITIES EXCHANGE ACT OF 1934

                           For the month of March 2006

                                 RADVISION LTD.
                              (Name of Registrant)


               24 Raoul Wallenberg Street, Tel Aviv 69719, Israel
                     (Address of Principal Executive Office)

                  Indicate by check mark whether the registrant files or will
file annual reports under cover of Form 20-F or Form 40-F.

                           Form 20-F [X]    Form 40-F [ ]

                  Indicate by check mark if the registrant is submitting the
Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): [ ]

                  Indicate by check mark if the registrant is submitting the
Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): [ ]

                  Indicate by check mark whether by furnishing the information
contained in this Form, the registrant is also thereby furnishing the
information to the Commission pursuant to Rule 12g3-2(b) under the Securities
Exchange Act of 1934.

                                 Yes [ ] No [X]

                  If "Yes" is marked, indicate below the file number assigned to
the registrant in connection with Rule 12g3-2(b): 82-__________

This Form 6-K is being incorporated by reference into the Registrant's Form S-8
Registration Statements File Nos. 333-45422, 333-53814, 333-55130, 333-66250,
333-82488, 333-104377, 333-116964 and 333-127013.





                                 RADVision Ltd.

6-K Items

     1.   Press release re RADVISION's  Click to Meet for Microsoft Live Meeting
          Enhances Hosted Web Conferencing dated March 6, 2006.

     2.   Press release re Microsoft and RADVISION Sign  Licensing  Agreement to
          Provide Live Communications Server-Compatible SIP Toolkits dated March
          13, 2006.

     3.   Press  release  re  RADVISION  IMS Ready  Carrier  Class SIP  Solution
          Validated  with High  Performance  AdvancedTCA*  Single Board Computer
          from Intel dated March 14, 2006.






                                                                          ITEM 1






Press Release                                             Source: RADVISION LTD.

RADVISION's Click to Meet for Microsoft Live Meeting Enhances Hosted Web
Conferencing

Monday March 6, 7:00 am ET

End Users To Enjoy Added Real Time Multiparty Video & Audio Functionality
FAIR LAWN, N.J.--(BUSINESS WIRE)--March 6, 2006--RADVISION (Nasdaq: RVSN -
News), a leading provider of multimedia conferencing and communications
platforms, today announced that its enterprise collaboration software--Click to
Meet(TM) for Microsoft Office Live Meeting, will be deployed by Allstream, the
Enterprise Solutions division of Manitoba Telecom Services Inc. and a leading
Canadian communication solutions provider. The deployment will provide
Allstream's customers with enhanced multiparty audio and video capabilities, as
part of its hosted Allstream Collaboration Suite solution.

Click to Meet for Microsoft Office is a scalable communications system that adds
integrated multi-participant PC-based video and audio functionality to Live
Meeting and Microsoft Office Live Communications Server 2005. The pairing of
Click to Meet with Live Meeting provides subscribers a richer audio, visual and
data collaboration experience.

"We are continuously looking at ways to enhance our Allstream Collaboration
Suite (ACS) solution," said Angela Hlavka, Vice President, Strategic Solution
Development for Professional Services, Allstream. "RADVISION's Click to Meet
solution is an important enhancement in terms of providing our ACS customers
greater functionality, quality and reliability - all in a hosted or non-hosted
environment. In addition, we can now offer greater ease-of-use for multi-party
audio and video conferencing needs with just one click on your desktop, seamless
integration with Microsoft's collaboration and communications applications, and
increased scalability that allows customers to access up to 90 simultaneous
videofeeds with unlimited participants."

"This enhancement is an example of our focus on key growth service segments,
such as unified communications, to deliver innovative and differentiated
IP-based solutions in the marketplace," said Hlavka.

"Click to Meet for Microsoft Office seamlessly integrates advanced visual
conferencing functionality with Live Meeting, creating a much richer experience
for conference participants," said Bob Romano, Vice President of Enterprise
Marketing for RADVISION's Networking Business Unit, "This solution is perfectly
suited for use in large scale deployments, because of its scalability, ease of
use, and low cost of ownership."

"Allstream's creative use of Microsoft's unified communications platform and
RADVISION's Click to Meet solution provides great value and flexibility for our
joint customers, who might otherwise not be able to collaborate face to face,"
said Marc Sanders, Senior Product Manager in the Unified Communications Group at
Microsoft.

Click to Meet for Microsoft Office's flexibility and scalability allows service
providers to offer customers a variety of models: hosted service, managed
service, customer premise service, or a monthly fee for service.

About Allstream

Allstream is a leading communication solutions provider with a world-class
portfolio of Connectivity, Managed Services and Professional Services. Focused
on the business market, Allstream collaborates with customers to create tailored
solutions that meet their unique needs and help them compete more effectively.
Allstream is a division of Manitoba Telecom Services Inc. (MTS), with a team of
dedicated employees focused on delivering outstanding value to its customers.
MTS has an extensive broadband fibre-optic network spanning more than 24,300
kilometres, and provides international connections through strategic
partnerships and interconnection agreements with other international service
providers. MTS's shares are listed on the Toronto Stock Exchange (trading
symbol: MBT). For more information, please visit: www.mts.ca and
www.allstream.com.








About RADVISION

RADVISION LTD. (Nasdaq: RVSN - News) is the industry's leading provider of high
quality, scalable and easy-to-use products and technologies for
videoconferencing, video telephony, and the development of converged voice,
video and data over IP and 3G networks.  For more information please visit our
website at www.radvision.com.

This press release contains forward-looking statements that are subject to risks
and uncertainties. Factors that could cause actual results to differ materially
from these forward-looking statements include, but are not limited to, general
business conditions in the industry, changes in demand for products, the timing
and amount or cancellation of orders and other risks detailed from time to time
in RADVISION's filings with the Securities Exchange Commission, including
RADVISION's Form 20-F Annual Report. These documents contain and identify other
important factors that could cause actual results to differ materially from
those contained in our projections or forward-looking statements. Stockholders
and other readers are cautioned not to place undue reliance on these
forward-looking statements, which speak only as of the date on which they are
made. We undertake no obligation to update publicly or revise any
forward-looking statement.

Contact:
RADVISION
Tsipi Kagan, 201-689-6340
Email: cfo@radvision.com
or
Media Relations:
Dukas Public Relations
Yael Yekutiel/Richard Dukas
212-704-7385
Email: Yael@dukaspr.com/richard@dukaspr.com
or
Investor Relations:
Comm-Partners LLC
June Filingeri, 203-972-0186
Email: junefil@optonline.net








                                                                          ITEM 2









Press Release                                                  Source: RADVISION


Microsoft and RADVISION Sign Licensing Agreement to Provide Live Communications
Server-Compatible SIP Toolkits

Monday March 13, 7:00 am ET

Licensing Agreement Simplifies Development of Solutions that Interoperate with
Microsoft Office Live Communications Server 2005 REDMOND, Wash. & FAIR LAWN,
N.J.--(BUSINESS WIRE)--March 13, 2006--Today, Microsoft Corp. (Nasdaq: MSFT -
News) and RADVISION (Nasdaq:RVSN - News), a leading provider of multimedia
conferencing, communications platforms and software developer toolkits,
announced a licensing agreement that will enable third-party developers to
integrate the communications capabilities of Microsoft(R) Office Live
Communications Server 2005 with additional SIP communications platforms.
 As part of the agreement, Microsoft is licensing to RADVISION the SIP
extensions for Live Communications Server. RADVISION will implement and
integrate the extensions into its toolkit products and offer the extensions to
third-party developers. The SIP extensions for Live Communications Server will
be available as optional add-ons to the award-winning RADVISION SIP, SIP Server,
and Videophone SIP toolkits. Existing RADVISION SIP customers also may license
the SIP extensions as an add-on to SIP toolkits previously licensed from
RADVISION.

"We are pleased that RADVISION is embracing the SIP standard to extend
interoperability for our third-party developers with Live Communications Server
on non-Windows(R) operating systems in addition to Windows-based operating
systems," said Gurdeep Singh Pall, Corporate Vice President of Microsoft's
Unified Communications Group. "The SIP extensions enable developers to unlock
innovation to help businesses make better decisions more quickly by connecting
people, information and business processes."

Boaz Raviv, CEO of RADVISION, added, "We are proud to extend RADVISION's
portfolio of SIP-based solutions to Live Communications Server environments. We
see Live Communications Server interoperability as an excellent potential for
new and add-on sales, and we believe it adds strong value to our rich SIP
portfolio. We are proud that Microsoft selected RADVISION as its exclusive
software toolkit vendor for providing these SIP extensions to the market."

Benefits for Third-Party Developers

The SIP extensions for Live Communications Server will allow third-party
developers to apply the power of software and software platforms to improve
communications across networks, devices and systems. Specifically, the
third-party developers will be able to:

     o    Integrate Live Communications Server capabilities into solutions based
          on IP-PBX,  IP/video  phones for wire line and wireless,  SIP proxies,
          WIFI-phones,   handsets   and   other   embedded   devices   for  Live
          Communications Server environments.

     o    Enable IP Multimedia Subsystem (IMS)  compatibility,  which will allow
          developers to implement  products for the mobile  environment that are
          simultaneously IMS and Live Communications Server compatible.


RADVISION's SIP extensions to Live Communications Server are based on the
industry-standard SIP (Session Initiation Protocol) for Instant Messaging and
Presence Leveraging Extensions (SIMPLE). SIP and SIMPLE provide a rich set of
solutions for computer and telephone interaction. Microsoft and RADVISION
support the SIP/SIMPLE effort, demonstrating both companies' strong commitment
to develop standards-based communications solutions built on methodologies that
can be broadly adopted and integrated.






Availability

General availability of the SIP extensions for Live Communications Server is
expected in the second half of 2006. RADVISION will offer demonstrations of
RADVISION SIP toolkits interoperating with Live Communications Server at the
RADVISION booth at the Voice On the Network (VON) conference and exhibition in
San Jose, Calif., March 15-17.

Existing and new RADVISION customers can license from RADVISION the SIP software
toolkits with SIP extensions to Live Communications Server as optional add-ons
to the RADVISION SIP, SIP Server, and Videophone SIP toolkits.

Live Communications Server protocol extensions for Windows-based solutions
currently are available to third-party developers through Microsoft.

About Microsoft

Founded in 1975, Microsoft (Nasdaq "MSFT") is the worldwide leader in software,
services and solutions that help people and businesses realize their full
potential.

About RADVISION

RADVISION (Nasdaq: RVSN - News) is the industry's leading provider of high
quality, scalable and easy-to-use products and technologies for
videoconferencing, video telephony, and the development of converged voice,
video and data over IP and 3G networks. For more information please visit our
website at www.radvision.com.

Microsoft and Windows are either registered trademarks or trademarks of
Microsoft Corp. in the United States and/or other countries.

The names of actual companies and products mentioned herein may be the
trademarks of their respective owners.

This press release contains forward-looking statements that are subject to risks
and uncertainties. Factors that could cause actual results to differ materially
from these forward-looking statements include, but are not limited to, general
business conditions in the industry, changes in demand for products, the timing
and amount or cancellation of orders and other risks detailed from time to time
in RADVISION's filings with the Securities Exchange Commission, including
RADVISION's Form 20-F Annual Report. These documents contain and identify other
important factors that could cause actual results to differ materially from
those contained in our projections or forward-looking statements. Stockholders
and other readers are cautioned not to place undue reliance on these
forward-looking statements, which speak only as of the date on which they are
made. We undertake no obligation to update publicly or revise any
forward-looking statement.






Contact:

RADVISION
Radvision Corporate:
Tsipi Kagan, 201-689-6340
cfo@radvision.com
or
Radvision Media:
Dukas Public Relations
Yael Yekutiel/Richard Dukas
212-704-7385
Yael@dukaspr.com/richard@dukaspr.com
or
Microsoft Media:
Waggener Edstrom Worldwide
Susan Sheehan/Rapid Response Team
503-443-7000 / 503-443-7070
ssheehan@waggeneredstrom.com/
rrt@waggeneredstrom.com
or
Radvision
Investor Relations:
Comm-Partners LLC
June Filingeri, 203-972-0186
junefil@optonline.net






                                                                          ITEM 3







Press Release                                                  Source: RADVISION

RADVISION IMS Ready Carrier Class SIP Solution Validated with High Performance
AdvancedTCA* Single Board Computer from Intel

Tuesday March 14, 11:00 am ET

FAIR LAWN, N.J.--(BUSINESS WIRE)--March 14, 2006--RADVISION (Nasdaq:RVSN -
News), a leading provider of multimedia conferencing and communications
platforms, announces that the RADVISION SIP Server Tool Kit has been validated
on the Intel Telco Server Proof of Concept in Intel's New Jersey Modular
Communication Platforms (MCP) Solution Center using RADVISION ProLab(TM) test
suite. The POC utilizes the RADVISION SIP Server Tool Kit and the latest high
performance Intel NetStructure(R) MPCBL0040 single board computer. The telco
server platform proof of concept (POC) from Intel is helping to accelerate time
to market for deployment of this new core network architecture for Telecom
Equipment Manufactures and Service Providers.

Support for high-capacity environments is crucial for service providers
implementing voice and video over IP products," said Adi Paz, Director of
Product Management and Marketing for RADVISION's Technology Business Unit. "The
RADVISION SIP Toolkit on which the SIP Server platform is based and ProLab
testing environment have been specifically designed to support carrier-class
systems scaling up to terabits per second. This makes them an ideal fit for
AdvancedTCA based platforms that will bring plug-and-play capabilities to
business-critical carrier-grade systems."

The RADVISION SIP product portfolio provides a complete framework for developing
all types of IP Multimedia Subsystem (IMS) ready SIP Server applications
including proxies, redirect servers, registrars, and presence servers on
multiple hardware platforms, including AdvancedTCA. It radically simplifies and
accelerates development by providing a standards-compliant, robust and high
performance implementation of standard SIP server functionality controlled
through a multi-level, user friendly application programming interface (API).
IMS is a new core infrastructure for wireless and cable networks that
facilitates deployment of multimedia services.

Based on RADVISION's award-winning protocol toolkits, the RADVISION ProLab Test
Management Suite is a powerful, highly scalable, feature-rich testing system
that is well suited for testing carrier-class, real-time communication
applications supporting large volumes of traffic. It complies with the most
recent industry standards and supports advanced signaling across different
network topologies. Intel used the Prolab Test Management Suite in their New
Jersey MCP Solution Center to perform stress and load testing in order to verify
the performance of the SIP Server in a high-capacity, high volume environment.
The Prolab Test Management Suite for SIP is part of a testing tool family that
includes testing support for H.323 and 3G-324M.

"By utilizing the RADVISION Prolab Test Management Suite, TEMs and Platform
Integrators will be able to quickly validate and benchmark Intel NetStructure(R)
AdvancedTCA blades in a carrier grade environment," said Shantanu Gupta,
Director of MCP Solutions Program, Communications Infrastructure Group, Intel.
"The RADVISION SIP Server platform provides our customers a stable, consistent
and high performance testing environment for our validations and integration
efforts."

The ATCA SIP server solution from RADVISION including the ProLab Test Management
Suite will be demonstrated at the RADVISION booth at the Spring Voice on the
Network (VON) conference and exhibition at San Jose, California during March
15-17, 2006. Results of the POC validation are available at
www.intel.com/go/IMS.

About RADVISION

RADVISION LTD. (Nasdaq: RVSN - News) is the industry's leading provider of high
quality, scalable and easy-to-use products and technologies for
videoconferencing, video telephony, and the development of converged voice,
video and data over IP and 3G networks.  For more information please visit our
website at www.radvision.com.







RADVISION is an Affiliate Member of the Intel(R) Communications Alliance, who
are committed to developing modular, standards-based solutions based on
technologies, processors, products, and services from Intel. Intel enables the
modular network with standards-based, building blocks for the converged network
that deliver enhanced performance, greater scalability, and maximum flexibility
offering profitable new communications services and lower infrastructure costs.
Visit http://www.intel.com/go/ica to learn more about these products and the
Alliance.

This press release contains forward-looking statements that are subject to risks
and uncertainties. Factors that could cause actual results to differ materially
from these forward-looking statements include, but are not limited to, general
business conditions in the industry, changes in demand for products, the timing
and amount or cancellation of orders and other risks detailed from time to time
in RADVISION's filings with the Securities Exchange Commission, including
RADVISION's Form 20-F Annual Report. These documents contain and identify other
important factors that could cause actual results to differ materially from
those contained in our projections or forward-looking statements. Stockholders
and other readers are cautioned not to place undue reliance on these
forward-looking statements, which speak only as of the date on which they are
made. We undertake no obligation to update publicly or revise any
forward-looking statement.

Intel and Intel NetStructure(R) are trademarks or registered trademarks of Intel
Corporation or its subsidiaries in the United States and other countries.

*Other names and brands may be claimed as the property of others.

Contact:
RADVISION
Tsipi Kagan, 201-689-6340
cfo@radvision.com
or
Media Relations:
Dukas Public Relations
Yael Yekutiel, 212-704-7385
Yael@dukaspr.com
or
Richard Dukas, 212-704-7385
richard@dukaspr.com
or
Investor Relations:
Comm-Partners LLC
June Filingeri, 203-972-0186
junefil@optonline.net








                                   SIGNATURES


         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.


                                 RADVISION LTD.
                                    (Registrant)



                                 By /s/Arnold Taragin
                                    -----------------
                                    Arnold Taragin
                                    Corporate Vice President and General Counsel



Date:  March 31, 2006