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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------



                                   F O R M 6-K

                      Pursuant to Section 13a-16 or 15d-16
                     of the Securities Exchange Act of 1934


                           For the month of April 2001



                                 RADVISION LTD.
                              (Name of Registrant)




                 24 Raoul Wallenberg St., 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 whether the registrant by furnishing the information
contained  in this  Form 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


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                                 RADVISION LTD.





6-K Items

     1.   RADVision Ltd.  Press Release dated April 3, 2001 re RADVISION's  Data
          Collaboration  Server (DCS) for  Application  Sharing Now Available as
          Windows NT(R)Application.






                                                                          ITEM 1



Contact:

 Sandra Fathi
 Dir. Corp. Communications
 RADVISION
 Tel: 201.529.4300 x 301
 sfathi@radvision.com




                   RADVISION's Data Collaboration Server (DCS)
        for Application Sharing Now Available as Windows NT(R)Application

     DCS-30 ENHANCES MULTIPOINT VIDEOCONFERENCING COMMUNICATION BY ENABLING
                   TRANSPARENT T.120 DATA SHARING CAPABILITIES

Mahwah,  New Jersey,  April 3, 2001 --  RADVISION  (NASDAQ:  RVSN),  the leading
provider  of  award-winning,   industry-standard  products  and  technology  for
real-time voice and video over IP (V2oIPTM), today announced the availability of
the DCS-30 software for real-time data collaboration and application sharing for
converged voice,  video and data IP networks.  The standalone DCS-30 application
is designed to work with RADVISION's OnLANTM and viaIPSM multipoint conferencing
units (MCU) and runs on any Microsoft(R)  Windows NT Server.

RADVISION's  DCS-30  allows  videoconferencing  participants  to view  diagrams,
graphic  presentations  and slide  lectures  simultaneously  with audio or video
streams.  Additional uses include text chats, whiteboard exchanges or rapid file
transfers during a multipoint videoconference of three or more participants.

"We are constantly working to provide our customers with platforms for deploying
enhanced IP-centric services for next generation  communication  networks," said
Dr. Michelle  Blank,  vice president of galactic  marketing for RADVISION.  "Our
data collaboration  software enables transparent multipoint data sharing between
conference participants. It is the simplest application for end users to use for
real-time collaboration."

The DCS-30  enables  application  sharing,  using the T.120  data  collaboration
standard,  for  up  to 30  conferencing  participants.  The  DCS  was  initially
developed   as  an   embedded   application   for   RADVISION's   multifunction,
chassis-based  viaIP  platform.  The  DCS-30 is now  available  as a  standalone
application  to run on  any NT  Server.  RADVISION  is  currently  offering  the
standalone  DCS-30  application  free  with  every  OnLAN-323  or viaIP MCU card
purchased now until the end of June 2001. More  information on this offer can be
found at the company Web site at www.radvision.com.

                                    --more--





About RADVISION

RADVISION is a leading  provider of products and technology for real-time voice,
video, and data communications over packet networks;  this includes the Internet
and other Internet Protocol (IP) based networks.  Recognized  universally as the
experts in  real-time  Voice and Video  over IP  (V2oIP),  RADVISION  offers the
broadest and most complete set of enabling  technology  and  networking  systems
needed to enable  enterprises  and service  providers to migrate their voice and
video  communications  from  traditional  telephone  networks  to new  converged
networks. Today, hundreds of thousands of end-users around the world communicate
over  next-generation  networks,  using IP-centric  products and solutions built
around RADVISION products and technology.  RADVISION's  multi-protocol  software
toolkits  for  IP  communications   include:   SIP,  MEGACO,  MGCP,  and  H.323;
RADVISION's V2oIP networking products include:  gateways,  conferencing bridges,
and gatekeeper applications. 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 and Exchange  Commission,  including
RADVISION's Form F-1 registration statement.

                                       ###

V2oIP,  and OnLAN are  trademarks  and viaIP is a service mark of RADVISION Ltd.
All  other  trade  names  and  trademarks  appearing  herein  are owned by their
respective holders.










                                   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/David Seligman
                                                        -----------------

                                                       David Seligman
                                                       Chief Financial Officer


Dated: April 5, 2001