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 May 2009

                                 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. 333-127013, 333-141654, 333-155442 and
333-155444.





                                 RADVision Ltd.
6-K Items

     1.   Press  release  re  RADVISION   Announces   Market   Leading   Quality
          Improvements and Enhanced  Scalability to Award Winning SCOPIA Desktop
          Platform dated May 19, 2009.

     2.   Press  release re  RADVISION  to Present  At RBC  Technology,  Media &
          Communications Conference on June 9th dated May 20, 2009.

     3.   Press  release  re  RADVISION   Selected  for  Wind  River's   Partner
          Validation Program Targeting the Networking and Telecom Industry dated
          May 28, 2009.







                                                                          ITEM 1





Press Release                                                  Source: RADVISION

RADVISION Announces Market Leading Quality Improvements and Enhanced Scalability
to Award Winning SCOPIA Desktop Platform

SCOPIA Desktop V7.0 Delivers H.264 Scalable Video Coding (SVC), High Definition
(HD) Recording and Playback and Enhanced Point-to-Point Calling

On Tuesday May 19, 2009, 8:00 am EDT

TEL AVIV, Israel--(BUSINESS WIRE)--RADVISION(R) Ltd. (Nasdaq: RVSN - News), a
leading provider of video network infrastructure and developer tools for unified
visual communications over IP, 3G and emerging next-generation IMS networks,
today announced significant updates to the SCOPIA Desktop platform that serve to
continue to enhance and deliver an unequalled desktop video conferencing
experience.

SCOPIA Desktop is the award winning desktop video platform that makes it easy to
extend video conferences to remote users and allows them to fully participate in
meetings no matter where users are: at their desk, at a customer location, or in
a hotel in another part of the world. This innovative Web-based desktop
conferencing solution allows users to share full voice, video and data, with
traditional room systems, telepresence systems, mobile devices and desktops all
in one conference and can be used by anyone inside or outside the enterprise
firewall.

RADVISION is further enhancing this solution with advanced H.264 Scalable Video
Coding (SVC) technology. Maintaining high quality calls with participants over
unmanaged networks like the public Internet can be problematic because of packet
loss and limited bandwidth. SCOPIA Desktop V7.0 with H.264 SVC scalable video
coding technology provides very high error resiliency while maintaining
interoperability with current room video conferencing systems. RADVISION's SVC
implementation is an extension to the H.264 video standard used by most video
conferencing devices today. SCOPIA Desktop users will now receive a high quality
experience even in impaired network conditions. H.264 SVC along with integrated
firewall and NAT traversal capabilities ensures that network impediments do not
interfere with having a good conferencing experience.

SCOPIA Desktop V7.0 will also bring point to point calling through a presence
enabled contact list providing the ability to call another desktop user directly
without utilizing SCOPIA MCU resources. This new capability provides enhanced
scalability supporting thousands of simultaneous calls on a single system.
SCOPIA Desktop's new presence enabled contact list offers fast and simple
conference initiation to other SCOPIA users or video conferencing room systems.
The presence enabled contact list also delivers seamless transition from point
to point to multiparty calls. In addition, SCOPIA Desktop's integrated firewall
and NAT traversal capability has been enhanced to support the new point to point
feature.

SCOPIA Desktop's recording facility has been further enhanced to record video
conferences in HD. Users can access a recorded meeting and watch the playback as
a media file in full HD. These media files can also be saved and viewed locally
on a user's PC or MAC allowing the user complete flexibility of when and where
to view the recording without having to be connected to the network. They can
also be converted and played back on mobile devices such as an Apple(R)
iPhone(TM) or iPod(R).

Additional SCOPIA Desktop V7.0 enhancements include:

     o    Automatic CPU awareness  supporting  netbook to quad processor systems
          guaranteeing  the  best  quality  experience   available  on  each  PC
          processor class.

     o    Administrator controls to grant different privileges for system guests
          and authenticated users.

     o    Per  user  bandwidth  controls  allowing  administrators  to  restrict
          bandwidth of an individual user in addition to a per conference basis.






"SCOPIA Desktop V7.0 brings significant new features and further extends our
leadership in the desktop market," said Boaz Raviv, CEO of RADVISION. "As the
desktop market expands, these new features will ensure that our customers can
scale their deployments over their existing networks while still maintaining
excellent quality video. With these additions we envision adoption of desktop
video to accelerate and become a very important part of every enterprise's
communication strategy."

The Korea Cadastral Survey Corporation (KCSC), Korea's national surveying
agency, recently upgraded their conferencing application to RADVISION's
solution. "This upgrade of the conference system to RADVISION has enabled not
only high definition room to room video conferencing, but also direct video
communications for all employees, saving us time and travel cost," said Mr. Chul
Soon Song, CIO of KCSC. "This upgrade of video communications will be a
foundation to our corporation's target for "Green Growth and Increased Business
Efficiency."

About RADVISION

RADVISION (Nasdaq: RVSN - News) is the industry's leading provider of
market-proven products and technologies for unified visual
communications over IP, 3G and IMS networks. With its complete set of
standards-based video networking infrastructure and developer toolkits for
voice, video, data and wireless communications, RADVISION is driving the unified
communications evolution by combining the power of video, voice, data and
wireless - for high definition video conferencing systems, innovative converged
mobile services, and highly scalable video-enabled desktop platforms on IP, 3G
and emerging next-generation IMS networks. To gain additional insights into our
products, technology and opinions, visit blog.radvision.com. For more
information about RADVISION, visit 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:

Corporate:
RADVISION Adi Sfadia, +1-201-689-6340
Chief Financial Officer
cfo@radvision.com
or
Media Relations:
Dukas Public Relations
Sean Carney/ Todd Barrish, +1-212-704-7385
sean@dukaspr.com / todd@dukaspr.com
or
Investor Relations:
Comm-Partners LLC
June Filingeri, +1-203-972-0186
junefil@optonline.net






                                                                          ITEM 2





Press Release                                                  Source: RADVISION

RADVISION to Present At RBC Technology, Media & Communications
Conference on June 9th

Presentation to be webcast and archived

On Wednesday May 20, 2009, 8:00 am EDT

TEL AVIV, Israel--(BUSINESS WIRE)--RADVISION(R) (Nasdaq: RVSN - News), a leading
provider of video network infrastructure and developer tools for unified visual
communications over IP, 3G and emerging next-generation IMS networks, announced
today that Robert Romano, Vice President of Enterprise Marketing, will speak at
the RBC Capital Markets 2009 Technology, Media and Communications Conference in
San Francisco on Tuesday, June 9th, beginning at 4:30 p.m. (Pacific).

The live webcast of the presentation can be accessed on the RADVISION web site
at www.radvision.com/InvestorEvents/RBC or by clicking on
www.wsw.com/webcast/rbc103/rvsn.

An audio replay of the event will be available on the RADVISION web site
approximately two hours after the live event and accessible for thirty days.

About RADVISION

RADVISION (Nasdaq: RVSN - News) is the industry's leading provider of
market-proven products and technologies for unified visual communications over
IP, 3G and IMS networks. With its complete set of standards-based video
networking infrastructure and developer toolkits for voice, video, data and
wireless communications, RADVISION is driving the unified communications
evolution by combining the power of video, voice, data and wireless - for high
definition video conferencing systems, innovative converged mobile services, and
highly scalable video-enabled desktop platforms on IP, 3G and emerging
next-generation IMS networks. For more information about RADVISION, visit
www.radvision.com.

Contact:

Corporate:
RADVISION
Adi Sfadia, +1 201-689-6340
Chief Financial Officer
cfo@radvision.com
or
Investor Relations:
Comm-Partners LLC
June Filingeri, +1 203-972-0186
junefil@optonline.net






                                                                          ITEM 3





Press Release                                                  Source: RADVISION

RADVISION Selected for Wind River's Partner Validation Program
Targeting the Networking and Telecom Industry

RADVISION's SIP Developer Suite To Be Part of Wind River's Software Ecosystem to
Help Customers Accelerate Product Deployments

On Thursday May 28, 2009, 8:00 am EDT

TEL AVIV, Israel--(BUSINESS WIRE)--RADVISION(R) (Nasdaq:RVSN - News), a
leading provider of video network infrastructure and developer tools for unified
visual communications over Internet Protocol (IP) networks, 3G and emerging
next-generation IP Multimedia Subsystem (IMS) networks, today announced that it
was selected to be part of the recently announced Wind River Partner Validation
Program. As a partner, RADVISION will provide its validated, award-winning SIP
Developer Suite based on Wind River's industry leading operating systems
(VxWorks and Wind River Linux) and partner technologies critical to telecom and
networking equipment providers.

The program addresses the growing need for commercial software to play a
critical role in emerging next-generation networks. RADVISION and Wind River
will focus on providing pre-integrated platform solutions for infrastructure
equipment being developed for broadband wireless, wireline and enterprise
networks. These growth segments include 3G, Long Term Evolution (LTE), Femtocell
Gateway, WiMax, Metro Ethernet, IP Multimedia Subsystem (IMS), Internet Protocol
Television (IPTV) and enterprise data.

RADVISION will validate its software development solutions and provide
testing and commercial support to customers. The primary benefits of such
pre-validated solutions are that customers can reduce development, integration,
and quality assurance efforts and thereby reduce overall risk while accelerating
time-to-market.

"Wind River's partner validation program directly addresses the increasingly
important business issues of time-to-market and R&D cost savings among our
customers," said Mike Langlois, General Manager, Networking and Telecom
Industry, Wind River. "As part of our efforts to define and enable the
networking industry's software reference platforms, Wind River has hand selected
industry leading commercial software companies like RADVISION to create a
preferred strategic relationship with Wind River. This is significant because
now our customers can spend significantly less time and effort integrating
software components to create a carrier-grade product."

"We are honored to be part of such an ambitious and exciting endeavor," said
Avishai Sharlin, General Manager of RADVISION's Technology Business Unit.
"Our SIP Developer Suite, a highly versatile set of tools to accelerate SIP
application development, will assist developers using Wind River operating
systems to reach markets faster, and embed best-of-breed multimedia
functionality in their products."

More information about the Wind River Partner Validation Program and solutions
for telecom and networking equipment providers is available at
http://www.windriver.com/partner-validation/.





About RADVISION

RADVISION (Nasdaq: RVSN - News) is the industry's leading provider of
market-proven products and technologies for unified visual communications over
IP, 3G and IMS networks. With its complete set of standards-based video
networking infrastructure and developer toolkits for voice, video, data and
wireless communications, RADVISION is driving the unified communications
evolution by combining the power of video, voice, data and wireless - for high
definition video conferencing systems, innovative converged mobile services, and
highly scalable video-enabled desktop platforms on IP, 3G and emerging
next-generation IMS networks. To gain additional insights into our products,
technology and opinions, visit blog.radvision.com. For more information about
RADVISION, visit 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:

Corporate:
RADVISION
Adi Sfadia, +1 201-689-6340
cfo@radvision.com
or
Media Relations:
Dukas Public Relations
Sean Carney/ Todd Barrish, +1 212-704-7385
sean@dukaspr.com / todd@dukaspr.com
or
Investor Relations:
Comm-Partners LLC
June Filingeri, +1 203-972-0186
junefil@optonline.net






                                    SIGNATURE


         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/Rael Kolevsohn
                                    -----------------
                                    Rael Kolevsohn
                                    Corporate Vice President and General Counsel


Date: May 29, 2009