<SEC-DOCUMENT>0001564590-17-005977-index.html : 20170404
<SEC-HEADER>0001564590-17-005977.hdr.sgml : 20170404
<ACCEPTANCE-DATETIME>20170404121040
ACCESSION NUMBER:		0001564590-17-005977
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20170404
DATE AS OF CHANGE:		20170404
EFFECTIVENESS DATE:		20170404

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CSG SYSTEMS INTERNATIONAL INC
		CENTRAL INDEX KEY:			0001005757
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROCESSING & DATA PREPARATION [7374]
		IRS NUMBER:				470783182
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27512
		FILM NUMBER:		17736935

	BUSINESS ADDRESS:	
		STREET 1:		9555 MAROON CIRCLE
		CITY:			ENGLEWOOD
		STATE:			CO
		ZIP:			80112
		BUSINESS PHONE:		3037962850

	MAIL ADDRESS:	
		STREET 1:		9555 MAROON CIRCLE
		CITY:			ENGLEWOOD
		STATE:			CO
		ZIP:			80112
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>csgs-defa14a_20170518.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: csgs-defa14a_20170518.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g2017032801150619053136.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g2017032801150619053136.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g2017032801150617353135.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g2017032801150617353135.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g2017032801150621153137.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g2017032801150621153137.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g2017032801150622853138.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g2017032801150622853138.jpg

</DOCUMENT>
</SEC-DOCUMENT>