CSG International to Hold Fourth Quarter and Year End 2011 Earnings Conference Call

CSG Systems International, Inc. (NASDAQ: CSGS), a global provider of software- and services-based business support solutions that help clients generate revenue and maximize customer relationships, invites you to participate in a conference call on Tuesday, Feb. 7, 2012, at 5:00 p.m. Eastern Time to discuss the company’s fourth quarter and year end 2011 earnings results.

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 1-877-941-9205 and ask the operator for the CSG International conference call and Liz Bauer, chairperson.

To join a webcast of the call, click here: http://ir.csgsystems.com/phoenix.zhtml?c=113558&p=irol-calendar

A replay of the conference call will be available until midnight Eastern Time on March 7, 2012, and can be accessed by dialing 1-800-406-7325 and access code of 4498686. 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.