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CSG International to Hold Second Quarter 2011 Earnings Conference Call

The one-hour conference call will feature Peter Kalan, CSG President and Chief Executive Officer, and Randy Wiese, CSG Chief Financial Officer. To reach the conference, dial 877-941-8609 and ask the operator for the CSG International conference call and Liz Bauer, chairperson.

A replay of the conference call will be available until midnight Eastern Time on Thursday, Sept. 1, 2011, and can be accessed by dialing 800-406-7325 and access code of 4451012. In addition, this call will be simulcast and archived on the Internet at www.csgi.com (Real Player required).

About CSG International

CSG Systems International, Inc. (NASDAQ: CSGS) is a market-leading business support solutions and services company serving the majority of the top 100 global communications service providers, including leaders in fixed, mobile and next-generation networks such as AT&T, Comcast, DISH Network, France Telecom, MasterCard, Orange, T-Mobile, Telefonica, Time Warner Cable, Vodafone, Vivo and Verizon. With over 25 years of experience and expertise in voice, video, data and content services, CSG International offers a broad portfolio of licensed and Software-as-a-Service (SaaS)-based products and solutions that help clients compete more effectively, improve business operations and deliver a more impactful customer experience across a variety of touch points. For more information, visit our website at www.csgi.com.

CSG International
Liz Bauer, 303-804-4065
Investor Relations
liz.bauer@csgi.com