SIGMA SYSTEMS INTEGRATES WITH CSG SYSTEMS CONVERGENT PLATFORM.

Sigma Systems, the broadband IP and wireless industry's leading provider of OSS (operations support systems) service management solutions, has announced that its award-winning Sigma Service Management Platform and VoIP Service Package has been successfully integrated with global billing and customer care solutions provider CSG Systems' (NASDAQ: CSGS) Advanced Convergent Platform (ACP).

This end-to-end integration delivers significant advantages for convergent broadband operators by providing a fully automated business and operational environment for digital voice services. Order entry, customer care and billing processes are streamlined by CSG and manual order management processes are removed with Sigma - therefore error and order fall- out rates rapidly decline while service provisioning dial tone, call features, voice mail and CLEC gateways is fully automated.

Since the joint solution is pre-integrated, the costs associated with deploying it dramatically reduced - something firmly in the purview of cable operators that are looking to launch or expand digital voice deployments.

The Sigma Service Management Platform provides order management, service authorization, resource management, and service provisioning capabilities facilitated by an integration framework to a carrier's existing operations support systems (OSS) and the business support system (BSS) provided by CSG's Advanced Convergent Platform.. The Sigma VoIP Service Package is pre-configured to manage specific voice services and interface with specific third-party systems to manage and fulfill PacketCable VoIP services for a specific operator. Advanced graphical user interfaces and tools manage the platform and allow different groups of users to seamlessly interact with this proven and deployed OSS solution offering.

"Our integration with CSG provides end-to-end support for VoIP and bundled service offerings with high-speed Internet," said Tim Spencer, president and COO, Sigma Systems. "Today, more than ever before, operators are looking for a proven and deployed voice solution able to meet their business and operational requirements. This pre- integrated solution with CSG Systems is the answer. Not only has it been exhaustively tested in our and CSG's laboratories, but it is being deployed at one site within a large North American carrier successfully."

About Sigma Systems

Sigma Systems is the leading provider of service management OSS solutions for delivering next- generation services on cable, wireless and IP broadband networks. Sigma's award-winning software solutions help service providers deliver voice, data/internet and video services, anywhere, anytime, while realizing the maximum revenue from subscribers for the least operational cost. The Sigma Service Management Platform automates order management, service provisioning and activation, resource management, and service authorization, as well as subscriber self-service and service diagnostics processes. Sigma supports all major communications technologies, including VoIP, PacketCable telephony, SIP telephony, GR303/V5.2 telephony, high-speed Internet, ISP services, wireless infrastructures (1x, 2.5G/3G), advanced digital set-tops. Sigma solutions have been trusted, proven and deployed by tier-1 clients in North America, Europe and Asia since 1996. Today, over 15 million subscribers of next-generation broadband and wireless services are managed by Sigma solutions worldwide. Sigma's clients serve over 40 million subscribers.

For more information, visit http://www.sigma-systems.com or call 416/493-5723, ext. 201.