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 Friday, September 24, 2010, at 10:00 a.m. Eastern Time to discuss the company’s proposed acquisition of Intec Telecom Systems. For a detailed overview of the proposed transaction, please visit the company’s website at: http://www.csgsystems.com/CSG_Content.aspx?L1=6&L2=30&L3=98&PRDetail=724

The 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) 941-2332 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 October 4, 2010, and can be accessed by dialing (800) 406-7325 and access code of 4367400#. In addition, this call will be simulcast and archived on the Internet at http://phx.corporate-ir.net/phoenix.zhtml?p=irol-eventDetails&c=113558&eventID=3389654 (Real Player required).

About CSG Systems

Headquartered in Englewood, Colorado, CSG Systems International, Inc. (NASDAQ: CSGS) is a customer interaction management company that provides software- and services-based solutions that help clients engage and transact with their customers. With a 25-year heritage in providing customer management and billing solutions to North American cable and direct broadcast satellite companies, CSG has broadened its customer interaction management capabilities to proudly serve this client base as well as new, highly competitive industries including financial services, healthcare, utilities and more. Today, CSG's solutions reach more than half of all US households each month and manage over $36 billion in transactions annually on its clients' behalf. For more information, visit our website at www.csgsystems.com.