<SEC-DOCUMENT>0001564590-20-041893-index.html : 20200831
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<ACCEPTANCE-DATETIME>20200831083258
ACCESSION NUMBER:		0001564590-20-041893
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		17
CONFORMED PERIOD OF REPORT:	20200826
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20200831
DATE AS OF CHANGE:		20200831

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:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27512
		FILM NUMBER:		201149920

	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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Document 1 - file: csgs-8k_20200826.htm

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<DOCUMENT>
<TYPE>EX-10.51C
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<DESCRIPTION>EX-10.51C
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Document 2 - file: csgs-ex1051c_8.htm

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<DESCRIPTION>EX-10.55
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Document 3 - file: csgs-ex1055_6.htm

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<DESCRIPTION>EX-99.1
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Document 4 - file: csgs-ex991_7.htm

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<FILENAME>csgs-20200826.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
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<TYPE>EX-101.LAB
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<FILENAME>csgs-20200826_lab.xml
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Document 9 - file: csgs-20200826_pre.xml

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<FILENAME>Financial_Report.xlsx
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Document 12 - file: Financial_Report.xlsx

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<SEQUENCE>13
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Document 13 - file: Show.js

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<TYPE>XML
<SEQUENCE>14
<FILENAME>report.css
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Document 14 - file: report.css

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<SEQUENCE>15
<FILENAME>FilingSummary.xml
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Document 15 - file: FilingSummary.html

Document 15 - RAW XML: FilingSummary.xml

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<SEQUENCE>17
<FILENAME>MetaLinks.json
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<TEXT>
Document 17 - file: MetaLinks.json

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<TYPE>ZIP
<SEQUENCE>18
<FILENAME>0001564590-20-041893-xbrl.zip
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