CSG Systems International, Inc. (NASDAQ:CSGS), a leading provider of customer interaction management and billing solutions, invites you to participate in a conference call on Tuesday, Feb. 8, 2011, at 5:00 p.m. Eastern Time to discuss the company's fourth quarter and year end 2010 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 (877) 941-2333 and ask the operator for the CSG Systems conference call and Liz Bauer, chairperson.

A replay of the conference call will be available until midnight Eastern Time on Wednesday, March 9, 2011, and can be accessed by dialing (800) 406-7325 and access code of 4397159. In addition, this call will be simulcast and archived on the Internet at www.csgsystems.com (Real Player required).

About CSG Systems

CSG Systems International, Inc. (NASDAQ: CSGS) is a world-leading Business Support Systems (BSS) 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, China Unicom, DISH Network, France Telecom, 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 Systems 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. The company serves a global client base across highly competitive industries including cable and direct broadcast satellite, telecommunications, financial services, healthcare, utilities, content and entertainment and more. For more information, visit our website at www.csgsystems.com.

CSG Systems
Liz Bauer, 303-804-4065
Investor Relations
liz_bauer@csgsystems.com