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 April 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 Releases New SIP Protocol Toolkit With Java
          APIs dated April 10, 2006.

     2.   Press  release  re  AETHRA  with   RADVISION  to  Provide  New  Visual
          Communications Solutions dated April 18, 2006.

     3.   Press release re ICBC Bank Deploys Advanced  Videconferencing Solution
          for Its Network of Branches Using  RADVISION  Products dated April 24,
          2006.

     4.   Press release re InterCall, Glowpoint and RADVISION Partner to Deliver
          Advanced Video  Capabilities  for Microsoft  Office Live Meeting dated
          April 27, 2006.





                                                                          ITEM 1






Press Release                                             Source: RADVISION LTD.

RADVISION Releases New SIP Protocol Toolkit With Java APIs

Monday April 10, 8:30 am ET

Java SIP Toolkit 2 Enables Faster and Simplified Development of Advanced Telecom
Applications

FAIR LAWN, N.J.--(BUSINESS WIRE)--April 10, 2006--RADVISION (Nasdaq:RVSN -
News), a leading provider of multimedia conferencing and communications
platforms, today announced the release and immediate availability of a Java
version of its award-winning session initiation protocol (SIP) toolkit for
real-time communication applications, such as voice over IP (VoIP) and instant
messaging (IM). The new toolkit significantly shortens development cycles
thereby enabling even faster time-to-market for a variety of new and innovative
services.

"The release of the Java version underscores RADVISION's position as the leading
developer of SIP toolkits and is highly supportive of the ongoing migration of
telecommunications towards Internet Protocol (IP) using SIP technology," said
Adi Paz, Senior Director of Product Management and Marketing for RADVISION's
Technology Business Unit. "Many of our customers have been expressing the need
for a Java SIP toolkit, and we are pleased to meet their growing requirements."

Java programming language, which is rapidly gaining popularity among developers,
can be used to write software on one platform and run it on another, create
programs that run within web browsers, develop server-side applications, and
write applications for cell phones and other consumer communication devices.
Java SIP is a fundamental building block for web-based endpoint-oriented
communication applications.

The Java SIP Toolkit can be used to develop click-to-talk applications, as well
as a variety of applications for web call centers, and soft phones for laptops
and PDAs. It also can be used as a major building block for innovative and
time-critical advanced telecom services on the server-side such as: least-cost
call routing, smart call diversions based on user preferences, smart
conferencing, as well as for transforming text messages to voice playback.

Similar to all of RADVISION's SIP toolkits, the Java SIP toolkit addresses
carrier-side applications for soft switches and application servers. The Java
SIP Toolkit supports operator-grade loading of busy hour call attempts (BHCAs)
and has enhanced carrier-grade features, including advanced SIP signaling
functionality. The small footprint allows efficient operation in SIP terminals
and IP handsets, as well as network-side implementations. In addition, Java SIP
is considered to be the ideal advanced technology for service delivery platforms
(SDPs).

The Java SIP toolkit complies with the latest version of the JSR32 standard,
version 1.2, of which RADVISION is an active contributor.

Considered an industry-leading solution, RADVISION's award-winning SIP product
portfolio and the Java SIP Toolkit provide multiple application program
interface (API) layers for optimal control and flexibility when used to develop
new products and services. Designed from the ground up to be robust, highly
versatile development tools, the toolkits simplify development of communications
systems and devices based on Internet Engineering Task Force (IETF) SIP.

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
cfo@radvision.com
or
Media Relations:
Dukas Public Relations
Kristin Conforti/Todd Barrish, 212-704-7385
kristin@dukaspr.com
todd@dukaspr.com
or
Investor Relations:
Comm-Partners LLC
June Filingeri, 203-972-0186
junefil@optonline.net






                                                                          ITEM 2







Press Release                                             Source: RADVISION LTD.

AETHRA with RADVISION to Provide New Visual Communications Solutions

Tuesday April 18, 7:00 am ET

The Two Leading Videoconferencing Companies Strengthen Their Strategic
Partnership for Unified Communications

ANCONA, Italy & FAIR LAWN, N.J.--(BUSINESS WIRE)--April 18, 2006--AETHRA(R), a
leader in the global telecommunications market with a full range of
videoconferencing solutions, and RADVISION (Nasdaq:RVSN - News), the industry's
leading provider of products and technologies for videoconferencing, video
telephony, and the development of converged voice, video and data over IP and 3G
networks, announced today that they are broadening their partnership to include
RADVISION desktop and 3G solutions in the AETHRA offering. AETHRA will now
provide to its customer base an expanded range of visual communication solutions
allowing the company to become the new point of reference for Unified
Communications.

"AETHRA has now become a real total solution provider for visual communications,
expanding its product offering while upholding maximum quality and technological
innovation, which reflect both AETHRA and RADVISION philosophies," said Marco
Viezzoli, AETHRA SpA CEO. "Our offering guarantees maximum interoperability with
other systems, thus providing users with the possibility to choose any kind of
visual communication solution available on the market from the same brand.
Today, AETHRA can build complex visual communications networks for its clients
encompassing desktop, room system and infrastructure technologies including NAT
& Firewall traversal and 3G mobile networks connectivity, using solutions under
its own single brand.

Boaz Raviv, RADVISION CEO added, "Our relationship with AETHRA has been a solid
one and they have been an excellent partner in bringing our products to their
customer base. AETHRA and RADVISION share the same vision for the visual
communications market which includes high quality and flexible solutions for
main stream deployments to the desktop PC or to the 3G video mobile handset,
alongside solutions for the traditional conference room. By bringing our desktop
videoconferencing and 3G Gateway products to market under the well-known AETHRA
name, together we are taking an important step today toward realizing our common
vision.

AETHRA Unified Communications, an Integrated Desktop Software Communications
Solution, is a scalable communications infrastructure for delivering integrated
voice, video, and data collaboration on a single software platform. AETHRA
Unified Communications, leading the way in scalability and flexibility, is a
must when deploying a desktop conferencing strategy that needs to scale from
dozens to hundreds or even thousands of users through a global network. AETHRA
Unified Communications is the perfect example of integration, with a single
software architecture consisting of the Conference Server, the Conference Client
and the Middleware to tie them all together.

AETHRA 3G Gateways are solutions that support real-time, bi-directional video
telephony sessions between mobile users and wired line devices such as desktop
or room videoconferencing systems. AETHRA 3G Gateways are standards based and
provide full interoperability with multimedia communication devices such as
gatekeepers, MCUs and any kind of video endpoints.

Today AETHRA offers the full spectrum of videoconferencing solutions over
circuit (ISDN), packet (IP) and 3G mobile networks including videoconferencing
end-points (rollabout, set-tops, codec, videophones, desktop); MCUs (Multipoint
Conferencing Units) with full video/audio transcoding and SIP/H.323 support;
ISDN to IP and 3G to IP Gateways for seamless connectivity between different
networks; Gatekeeper functionality for call control and dial plan schemes;
Scheduling & Management tools.







About AETHRA

AETHRA (www.aethra.com) is a leader in the global telecommunications market,
with distribution of its leading-edge products through businesses and more than
40 telephone companies in over 60 countries worldwide. The company develops,
manufactures and markets a wide range of high-performance video communications
and audio conferencing products, including rollabouts, set-tops, videophones and
special solutions dedicated to telemedicine, video surveillance and distance
learning. In addition, AETHRA offers multi-audio, video and data services thanks
to AETHRA.net, the company specifically focused on multi-conferencing services.
AETHRA also develops and markets internationally a variety of telecommunications
products, including ISDN and xDSL systems and networking test equipment. These
exceptional products have distinguished AETHRA as a leader in the
telecommunications industry worldwide for over 30 years, reflecting its
expertise in bringing cutting-edge communications technologies to the market.

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. Revenue from
sales of RADVISION toolkits may have been recognized in prior quarters.
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:
Dukas Public Relations for RADVISION
Kristin Conforti, 212-704-7385
kristin@dukaspr.com
or
RADVISION
Tsipi Kagan, 201-689-6340
cfo@radvision.com
or
AETHRA SpA
Corporate:
Roberto Flaiani, 39 071 2189871
flaiani@aethra.com
Press:
Francesca Galeazzi, 39 071 2189742
francesca.galeazzi@aethra.com







                                                                          ITEM 3






Press Release                                             Source: RADVISION LTD.

ICBC Bank Deploys Advanced Videconferencing Solution for Its Network of Branches
Using RADVISION Products

Monday April 24, 7:00 am ET

International Commercial Bank of China Uses Solution Integrated by Digital
Global Technology (DGT) for Financial Consulting, Briefing and Training between
Its 81 Branches

FAIR LAWN, N.J.--(BUSINESS WIRE)--April 24, 2006--RADVISION
(Nasdaq: RVSN - News), a leading provider of multimedia conferencing and
communications platforms, today announced that the RADVISION viaIP(TM)
Multipoint Control Unit (MCU) has been deployed by the International Bank of
China (ICBC). ICBC is using the solution to connect its 81 branch offices across
the Asia Pacific region in order to improve its internal financial consulting,
briefing and training efforts. Digital Global Technology (DGT) has integrated
the RADVISION products into the overall solution that it is sourcing to ICBC.

The viaIP powered application is a fully bi-directional videoconferencing
collaboration solution that allows the head office to perform its daily
supervision and training duties with improved effectiveness using visual
communications. Furthermore, the branches are able to engage in multi-branch
video conferencing among themselves as part of the solution. ICBC believes that
the solution speeds up the transfer of important information and enhances the
quality of ICBC's customer service because of the ability to provide remote
staff training and development on a daily basis.

ICBC chose the RADVISION viaIP MCU as the fundamental building block of its
videoconferencing infrastructure. The viaIP MCU was easily integrated into DGT's
comprehensive solution of multiple videoconferencing endpoints, scheduling and
management software applications and video server streaming devices. ICBC
commented: "We are very pleased with the high quality and ease of use of the
RADVISION viaIP MCU solution. The viaIP, with its unique cascading ability,
allows multiple MCUs to appear to our network as a single, very high-capacity
unit. This facilitated the integration into the scheduling and management
application. The overall solution is easy to use and has an excellent user
experience."

RADVISION's videoconferencing infrastructure product line is designed to provide
an extremely high quality user experience, with connectivity to all common video
endpoints on a network. Eitan Livne, General Manager of RADVISON's Asia Pacific
territory commented: "The financial sector, of which ICBC is a part, demands the
highest quality and most reliable solutions possible. We are pleased that ICBC
has chosen us to be a part of their efforts to provide the best financial
services possible to their customers."

DGT and RADVISION see continued collaboration in providing mission-critical
solutions to leading enterprises in the region. The company's products and
roadmaps show their solutions expanding to the 3G mobile environment as well as
to the PC desktop using innovative gateways and desktop software products from
RADVISION. Echo Lin, General Manager of DGT added, "The RADVISION products are
extremely reliable and integrated easily into the complete solution providing
very high quality performance. We hope to continue our productive relationship
with RADVISON to bring videoconferencing to more users whether in the conference
room, at their desks using a PC, or on the go with their 3G mobile phones."

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
cfo@radvision.com
or
Media:
Dukas Public Relations
Kristin Conforti or Todd Barrish, 212-704-7385
kristin@dukaspr.com
todd@dukaspr.com
or
Investor Relations:
Comm-Partners LLC
June Filingeri, 203-972-0186
junefil@optonline.net






                                                                          ITEM 4







Press Release          Source: RADVISION Ltd., InterCall, Inc. & GlowPoint, Inc.

InterCall, Glowpoint and RADVISION Partner to Deliver Advanced Video
Capabilities for Microsoft Office Live Meeting

Thursday April 27, 8:05 am ET

OMAHA, Neb. & HILLSIDE, N.J. & FAIR LAWN, N.J.--(BUSINESS WIRE)--April 27, 2006
--RADVISION Ltd. (Nasdaq: RVSN - News):

InterCall's Microsoft Office Live Meeting Customers Will Benefit from Enhanced
Multi-participant Video Capabilities Delivered over Glowpoint's Advanced Video
Network Utilizing RADVISION's Click to Meet for Microsoft Office

InterCall, the largest conferencing service provider in the world, GlowPoint,
Inc. (OTC: GLOW.PK - News), the world's leading broadcast-quality IP-based video
communications service provider, and RADVISION (Nasdaq: RVSN - News), the
leading provider of scalable multimedia conferencing and communications
platforms and related solutions, announced today that they have partnered
together to deliver an advanced video conferencing service for use with
Microsoft Office Live Meeting, an online collaboration and web conferencing
service. The solution, which seamlessly integrates into Microsoft's widely used
collaboration service, brings together RADVISION's award winning Click to
Meet(TM) for Microsoft Office solution with Glowpoint's broadcast quality
IP-video network. Initial availability of this solution will be offered to
InterCall's extensive customer base. InterCall is a major reseller of
Microsoft's Live Meeting service and plans to make this service available to
their Live Meeting customers beginning April 28th.

Click to Meet for Microsoft Office offers 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
RADVISION's Click to Meet with Glowpoint's IP-video enhanced network will allow
InterCall to provide Live Meeting subscribers a rich audio, visual and data
collaboration experience.

"Many of our customers have asked us for ways they can use Click to Meet for
Microsoft Office, without having to deploy and manage the technology
themselves," said Bob Romano, Vice President of Enterprise Marketing for
RADVISION's Networking Business Unit. "The combination of Microsoft Live
Meeting's feature rich web conferencing, Glowpoint's specialized IP-Video
network and Click to Meet's advanced multi-stream video technology will provide
InterCall's customers with the richest collaboration experience available
today."

"Enhancing Live Meeting with multi-participant video provides more productive
and interactive collaboration for our customers," said Marc Sanders, Senior
Product Manager in the Unified Communications Group at Microsoft. "InterCall's
Live Meeting customers will now experience meetings that are more like
face-to-face than ever before."

"We are always looking for new and interesting ways to increase the quality and
capabilities of web collaboration and video conferencing, and this integration
with RADVISION's Click to Meet allows us to do just that," said Michael
Brandofino, Chief Executive Officer of Glowpoint. "We are very excited to be
working with InterCall and RADVISION and look forward to providing an
exceptional experience to their customers."

About Glowpoint

GlowPoint, Inc. (OTC: GLOW.PK - News) is the world's leading broadcast quality,
IP-based video communications service provider. Glowpoint offers video
conferencing, bridging, technology hosting and IP broadcasting services to
enterprises, SOHOs, broadcasters and consumers worldwide. The Glowpoint network
carries on average over 60,000 video calls per month worldwide. Glowpoint is
headquartered in Hillside, New Jersey. To learn more about Glowpoint, visit us
at www.Glowpoint.com.







About InterCall

InterCall, a subsidiary of West Corporation, is the largest service provider in
the world specializing in conference communications. Founded in 1991, InterCall
helps people and companies be more productive by providing advanced audio,
event, Web and video conferencing solutions that are easy-to-use and save them
time and money. Along with a team of over 500 Meeting Consultants, the company
employs more than 1,500 operators, customer service representatives, call
supervisors, accounting, marketing and IT professionals. InterCall's strong US
presence, which includes four call centers and 26 sales offices, is bolstered by
a global reach that extends to Canada, the United Kingdom, Ireland, France,
Germany, Australia, New Zealand, Hong Kong, Singapore, Japan and India. For more
information, please visit www.intercall.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 and
services, the timing and amount or cancellation of orders and other risks
detailed from time to time in RADVISION,s, Intercall's and Glowpoint's filings
with the Securities Exchange Commission, including the companies' Annual
Reports. 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:
InterCall, Inc.
Corporate:
www.intercall.com
or
Public Relations:
Cushman-Amberg Communications, 312-263-2500
Or
Glowpoint:
Jonathan Brust, 973-391-2086
Or
RADVISION Ltd.
Corporate:
Bob Romano, 512-656-1436
rromano@radvision.com
or
Public Relations:
Dukas Public Relations
Kristin Conforti / Todd Barrish, 212-704-7385
kristin@dukaspr.com / todd@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:  April 28, 2006