UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

SCHEDULE 14A

 

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No.      )

 

Filed by the Registrant ¨

 

Filed by a Party other than the Registrant ¨

 

Check the appropriate box:

 

¨Preliminary Proxy Statement

 

¨Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

 

¨Definitive Proxy Statement

 

xDefinitive Additional Materials

 

¨Soliciting Material under §240.14a-12

 

Ribbon Communications Inc.

(Name of Registrant as Specified in Its Charter)

 

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

 

Payment of Filing Fee (Check the appropriate box):

 

xNo fee required.

 

¨Fee paid previously with preliminary materials.

 

¨Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a6(i)(1) and 0-11.

 

 

 

 

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