<SEC-DOCUMENT>0001104659-21-048713-index.html : 20210409
<SEC-HEADER>0001104659-21-048713.hdr.sgml : 20210409
<ACCEPTANCE-DATETIME>20210409161600
ACCESSION NUMBER:		0001104659-21-048713
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20210409
DATE AS OF CHANGE:		20210409

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Ribbon Communications Inc.
		CENTRAL INDEX KEY:			0001708055
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		IRS NUMBER:				821669692
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38267
		FILM NUMBER:		21818027

	BUSINESS ADDRESS:	
		STREET 1:		6500 CHASE OAKS BOULEVARD
		CITY:			PLANO
		STATE:			TX
		ZIP:			75023
		BUSINESS PHONE:		877-412-8867

	MAIL ADDRESS:	
		STREET 1:		6500 CHASE OAKS BOULEVARD
		CITY:			PLANO
		STATE:			TX
		ZIP:			75023

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Sonus Networks, Inc.
		DATE OF NAME CHANGE:	20171027

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Solstice Sapphire Investments, Inc.
		DATE OF NAME CHANGE:	20170531
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>tm212651d4_defa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: tm212651d4_defa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>tm212651d4_defa14aimg001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: tm212651d4_defa14aimg001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>tm212651d4_defa14aimg002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: tm212651d4_defa14aimg002.jpg

</DOCUMENT>
</SEC-DOCUMENT>