UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 SCHEDULE 13G/A

                    Under the Securities Exchange Act of 1934
                               (Amendment no. 2)*

                                 RADVision Ltd.
                                 --------------
                                (Name of Issuer)

                  Ordinary Shares, par value NIS 0.10 per share
                  ---------------------------------------------
                         (Title of Class of Securities)


                                   M8186910 5
                                   ----------
                                 (CUSIP Number)

                                December 31, 2005
                                -----------------
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

 [ ] Rule 13d-1(b)

 [ ] Rule 13d-1(c)

 [X] Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).





                                   Page 1 of 5






  CUSIP No.  88906B105


1    Name of Reporting Person:  Zohar Zisapel
     I.R.S. Identification No. of above person (entities only): N/A

2    Check the Appropriate Box if a Member of a Group (See Instructions): (a)[ ]
                                                                          (b)[X]

3    SEC Use Only

4    Citizenship or Place of Organization:            Israel

Number of       5      Sole Voting Power:         1,872,866 Ordinary Shares*
Shares
Beneficially    6      Shared Voting Power:         422,621 Ordinary Shares
Owned by
Each            7      Sole Dispositive Power:    1,872,866 Ordinary Shares*
Reporting
Person With     8      Shared Dispositive Power:    422,621 Ordinary Shares

9    Aggregate Amount Beneficially Owned by Each Reporting Person:
                                                       2,295,487 Ordinary Shares

10   Check if the Aggregate Amount in Row (9) Excludes Certain Shares
     (See Instructions): [ ]

11   Percent of Class Represented by Amount in Row (9):   10.3%**

12   Type of Reporting Person (See Instructions):         IN

----------------
*    Includes  75,000  Ordinary  Shares  issuable upon the exercise of currently
     exercisable options granted to the Reporting Person.
**   Based on 21,803,997 Ordinary Shares that the Issuer advised were issued and
     outstanding as of December 31, 2005.



                                Page 2 of 5 Pages







Item 1.

(a)  Name of Issuer: RADVision Ltd.

(b)  Address  of  Issuer's  Principal  Executive  Offices:  24 Raoul  Wallenberg
     Street, Tel Aviv 69719, Israel

Item 2.

(a)  Name of Person Filing: Zohar Zisapel

(b)  Address  of  Principal  Business  Office or, if none,  Residence:  24 Raoul
     Wallenberg Street, Tel Aviv 69719

(c)  Citizenship: Israel

(d)  Title of Class of Securities: Ordinary Shares, par value NIS 0.10 per share
     ("Ordinary Shares")

(e)  CUSIP Number: M81869 10 5

Item 3. Not applicable

Item 4. Ownership

(a)  Amount beneficially  owned:  As of December 31, 2005, the Reporting  Person
beneficially  owned 2,295,487  Ordinary Shares, or 10.5%, of the total number of
Ordinary Shares issued and outstanding,  of which: (i) 1,180,554 Ordinary Shares
were owned of record by the Reporting  Person;  (ii) 75,000 Ordinary Shares were
issuable  upon the  exercise of  currently  exercisable  options  granted to the
Reporting  Person;  (iii) 306,456 Ordinary Shares were owned of record by Lomsha
Ltd.,  an Israeli  company  controlled  by the  Reporting  Person;  (iv) 310,856
Ordinary  Shares were owned of record by Michael and Klil Holdings (93) Ltd., an
Israeli company  controlled by the Reporting  Person;  and (v) 422,621  Ordinary
Shares were owned of record by RAD Data Communications Ltd., an Israeli company.
The  Reporting  Person is a principal  shareholder  and Chairman of the Board of
Directors  of RAD Data  Communications  Ltd.  The  Reporting  Person  and Yehuda
Zisapel have shared voting and dispositive power with respect to the shares held
by RAD Data Communications Ltd.

(b)  Percent of class: 10.3%**

(c)  Number of shares as to which such person has:

     (i)  Sole power to vote or to direct the vote: 1,872,866 Ordinary Shares*

     (ii) Shared power to vote or to direct the vote: 422,621 Ordinary Shares

     (iii) Sole  power to dispose or to direct  the  disposition  of:  1,872,866
          Ordinary Shares*

     (iv) Shared  power to  dispose  or to direct the  disposition  of:  422,621
          Ordinary Shares

-----------------
*    Includes  75,000  Ordinary  Shares  issuable upon the exercise of currently
     exercisable options granted to the Reporting Person.
**   Based on 21,803,997 Ordinary Shares that the Issuer advised were issued and
     outstanding as of December 31, 2005.


                                Page 3 of 5 Pages




Item 5. Ownership of Five Percent or Less of a Class

          If this  statement  is being  filed to report  the fact that as of the
          date hereof the reporting person has ceased to be the beneficial owner
          of more  than  five  percent  of the  class of  securities,  check the
          following [ ]

Item 6. Ownership of More than Five Percent on Behalf of Another Person

          Not applicable.

Item 7.  Identification  and Classification of the Subsidiary Which Acquired the
         Security Being Reported on By the Parent Holding Company

          Not applicable.

Item 8. Identification and Classification of Members of the Group

          Not applicable.

Item 9. Notice of Dissolution of Group

          Not applicable.

Item 10. Certification

          Not applicable.





                                Page 4 of 5 Pages












                                    SIGNATURE

     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.


Date:  February 12, 2006

                                                     /s/Zohar Zisapel
                                                     ----------------
                                                     Zohar Zisapel


















                                Page 5 of 5 Pages