<SEC-DOCUMENT>0001564590-20-015669-index.html : 20200407
<SEC-HEADER>0001564590-20-015669.hdr.sgml : 20200407
<ACCEPTANCE-DATETIME>20200407133820
ACCESSION NUMBER:		0001564590-20-015669
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20200407
DATE AS OF CHANGE:		20200407
EFFECTIVENESS DATE:		20200407

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:		20779260

	BUSINESS ADDRESS:	
		STREET 1:		6175 SOUTH WILLOW DRIVE
		CITY:			GREENWOOD VILLAGE
		STATE:			CO
		ZIP:			80111
		BUSINESS PHONE:		3037962850

	MAIL ADDRESS:	
		STREET 1:		6175 SOUTH WILLOW DRIVE
		CITY:			GREENWOOD VILLAGE
		STATE:			CO
		ZIP:			80111
</SEC-HEADER>
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<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>csgs-defa14a_20200515.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: csgs-defa14a_20200515.htm

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Document 2 - file: gdjeaz5bdeh1000001.jpg

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<SEQUENCE>3
<FILENAME>gdjeaz5bdeh1000004.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: gdjeaz5bdeh1000004.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>gdjeaz5bdeh1000002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: gdjeaz5bdeh1000002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>gdjeaz5bdeh1000003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: gdjeaz5bdeh1000003.jpg

</DOCUMENT>
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