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 July 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 Announces General Availability of the First
          Fully Compliant IMS SIP Protocol Toolkit dated July 17, 2006.

     2.   Press  release  re Quanta  Selects  RADVISION's  3G-324M  Toolkit  and
          3G-324M Testing Suite to Build a Video-Enabled 3G Mobile Handset dated
          July 24, 2006.








                                                                          ITEM 1







Press Release                                             Source: RADVISION LTD.

RADVISION Announces General Availability of the First Fully Compliant IMS SIP
Protocol Toolkit

Monday July 17, 7:00 am ET

IMS SIP Toolkit Opens the Door to the Next Stage in the Evolution of Converged,
Next Generation IMS Networks

FAIR LAWN, N.J.--(BUSINESS WIRE)--July 17, 2006--RADVISION (NASDAQ:RVSN - News),
the leading provider of video network infrastructure and developer tools for
unified visual communications over IP, 3G, and emerging next-generation
networks, today announced the release and general availability of the industry's
first IP Multimedia Subsystem (IMS) Session Initiation Protocol - SIP - Toolkit
for real-time communication applications. Based on RADVISION's award-winning SIP
toolkit, the IMS SIP Toolkit is a powerful and highly versatile set of tools
that facilitates the development of IMS SIP applications while reducing
development time and costs. The IMS-SIP toolkit is suitable for both clients and
servers.

IMS is a SIP-based network that serves as the infrastructure for services and
call or session control in advanced networks. IMS is the cornerstone for
deploying truly converged advanced 3G networks, as well as additional types of
networks, such as wireline telephony, packet cable, and WiMax. The IMS network
entities that can be developed with RADVISION's IMS SIP Toolkit are P-CSCF,
I-CSCF, S-CSCF, BGCF, AS, UE, MGCF, MRFC and SGW.

"With the release of IMS SIP toolkit, RADVISION is pioneering the deployment of
next generation networks. This represents a major milestone in the migration
toward IMS," said Adi Paz, Senior Director of Product Management and Marketing
for RADVISION's Technology Business Unit. "The market has been waiting for the
general availability of IMS products, and we are pleased to maintain our
leadership role by being the first to market with our IMS Toolkit."

The IMS SIP toolkit is part of an entire family of products specifically
designed for IMS networks. Additional products include the SIP Server, Java SIP,
MEGACO, RTP Toolkits and the ProLab(TM) IMS Testing & Analysis suite.

Coded in ANSI C and cross-platform compatible, the IMS SIP Toolkit is available
for all common operating systems. It features an open, object-oriented
architecture, which makes it programmer-friendly and highly flexible. It
provides multiple API layers and is inherently designed to offer both extensive
functionality and complete flexibility. SIP extensions include support for IMS
registration, MD5-AKA, RFC 3329 security agreement, IPsec with ESP transport
mode and manual keying.

For further information on IMS, RADVISION has published a detailed IMS SIP white
paper that can be downloaded from the company's website at:
http://www.radvision.com/Resources/WhitePapers/ims_sip.htm.

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 LTD.
Tsipi Kagan, 201-689-6340
cfo@radvision.com
or
Media Relations:
Dukas Public Relations
Kristin Conforti, 516-320-6839
kristin@dukaspr.com
or
Investor Relations:
Comm-Partners LLC
June Filingeri, 203-972-0186
junefil@optonline.net








                                                                          ITEM 2






Press Release                                                  Source: RADVISION

Quanta Selects RADVISION's 3G-324M Toolkit and 3G-324M Testing Suite to Build a
Video-Enabled 3G Mobile Handset

Monday July 24, 7:00 am ET

Quanta's 3G Video Handset Will Deliver Advanced Capabilities and Superior
Functionality While Retaining a Very Low Footprint Solution in TD-SCDMA

FAIR LAWN, N.J.--(BUSINESS WIRE)--July 24, 2006--RADVISION(R)
(NASDAQ:RVSN - News), a leading provider of multimedia conferencing and
communications platforms, announced today that Quanta Computer Inc. is licensing
RADVISION's 3G-324M Toolkit, with handset related add-ons, and the ProLab(TM)
3G-324M Testing Suite Solution to design and develop a video-enabled 3G mobile
handset. The Quanta Group is one of China's leading developers of computers,
storage devices and displays.

"Quanta's selection underscores the advantages of RADVISION's comprehensive
approach," said Adi Paz, Senior Director of Product Management and Marketing for
RADVISION's Technology Business Unit. "From initial reference design through
testing, the Quanta group will be using RADVISION's integrated solutions to
deliver a handset with optimal interoperability to achieve reduced time to
market. We are very proud to partner with such a significant player in the
market."

Quanta will be using the 3G-324M Toolkit to develop a handset based on Windows
Mobile 5.0 operating system, running on an Intel PXA270 application chip and a
Qualcomm MSM6280 baseband chip. The RADVISION 3G-324M Toolkit is uniquely adept
to run in environments as this - equipped with easy to use APIs, optimized CPU
usage, patent-pending multiplexing technology, and innovative optional features
that reduce time-to-market while optimizing interoperability. The 3G-324M
Toolkit also uses a wide range of server equipment because of its feature-rich
capabilities and robust performance.

"We were familiar with RADVISION's reputation for quality and were impressed
with the performance and capabilities of both the 3G-324M Toolkit and the
ProLab(TM) testing solution. They provide us with both emulation of traffic and
in-depth analysis," said Sean Wu, R&D Director for Quanta. "In addition,
RADVISION's active participation in standardization bodies ensures that we will
always benefit from the most up-to-date technology."

About Quanta

Quanta Computer is the world's largest notebook design and manufacturing company
with revenues reaching a record high of NT$403BN in 2005 (YoY +24%). Quanta
Computer is the flagship of the Quanta Group which also includes Quanta Display,
Quanta Storage and others. The Quanta Group employs more than 40,000 persons
worldwide and has major operations set up in Asia, America and Europe. Products
that the Group provide range from information, communication, consumer
electronics, electronic display to storage. Please refer to website for more
information. http://www.quantatw.com

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.





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, +1-201-689-6340
cfo@radvision.com
    or
Adi Paz, +972-3-767-9636
adip@radvision.com
    or
Investor Relations:
Comm-Partners LLC
June Filingeri, +1-203-972-0186
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:  July 31, 2006