UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FForm ~~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~~PURSUANT ~~the~~TO ~~month~~RULE of13A-16 ~~May~~OR ~~2012~~15D-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of June 2012 (Report No. 1)

Commission File Number: 0-29871

RADVISION LTD.

(~~Name~~Translation of ~~Registrant~~registrant’s name into English)

24 Raoul Wallenberg Street, Tel Aviv 69719, Israel

(Address of ~~Principal~~principal ~~Executive~~executive ~~Office~~offices)

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 T x Form 40-F *o

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): *N/A

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): *N/A

~~Indicate~~THE byINFORMATION ~~check~~SET ~~mark~~FORTH ~~whether~~IN byTHIS ~~furnishing~~REPORT ~~the~~ON ~~information~~FORM ~~contained~~6-K inIS ~~this~~HEREBY ~~Form,~~INCORPORATED ~~the~~BY ~~registrant~~REFERENCE isINTO ~~also~~THE ~~thereby~~REGISTRANT'S ~~furnishing~~REGISTRATION ~~the~~STATEMENTS ~~information~~ON toFORM ~~the~~S-8 ~~Commission~~(REGISTRATION ~~pursuant~~STATEMENT toNOS. ~~Rule~~333-127013, ~~12g3~~333-~~2(b~~141654, 333-155442, 333-155444, 333-164091 AND 333-179425), ~~under~~AND ~~the~~SHALL ~~Securities~~BE ~~Exchange~~A ~~Act~~PART ofTHEREOF ~~1934~~FROM THE DATE ON WHICH THIS REPORT IS FILED, TO THE EXTENT NOT SUPERSEDED BY DOCUMENTS OR REPORTS SUBSEQUENTLY FILED OR FURNISHED.

~~Yes * No T~~CONTENTS

IfThis ~~"Yes"~~report ison ~~marked,~~Form ~~indicate~~6-K ~~below~~of RADVISION Ltd. consists of the ~~file~~following ~~number~~document, ~~assigned~~which tois ~~the~~hereby ~~registrant~~attached inhereto ~~connection~~and ~~with~~incorporated ~~Rule~~by ~~12g3-2(b):~~reference ~~82-~~herein:

~~This~~Exhibit ~~Form~~99.1 ~~6-K~~Press isrelease: ~~being~~RADVISION ~~incorporated~~Acquired by ~~reference into the Registrant’s Form S-8 Registration Statements File Nos. 333-127013~~Avaya, ~~333-141654,~~dated ~~333-155442,~~June ~~333-155444~~5, ~~333-164091~~ ~~and 333-179425~~2012.

~~RADVision Ltd.~~SIGNATURES

EXPLANATORY NOTE

The following exhibit is attached:

99.1 Press Release re Radvision Reports Better Than Expected First Quarter 2012 Results dated May 14, 2012

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

	RADVISION LTD.

Date: June 5, 2012	By:	/s/ Rael Kolevsohn
		Name: Rael Kolevsohn
		Title: Corporate Vice President and General Counsel

Date: May 16, 2012

EXHIBIT INDEX

EXHIBIT NO.	DESCRIPTION
Exhibit		Description
99.1	Press Release re Radvision Reports Better Than Expected First Quarter 2012 Results dated May 14, 2012
Number		of Exhibit
99.1		Press release: RADVISION Acquired by Avaya, dated June 5, 2012.

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