Rogers Cable Selects Sigma Systems VOIP Solution to Support Digital Phone Service

TORONTO, Canada / April 4, 2005 -- Sigma Systems, the cable broadband and mobile wireless industry's leading provider of service management solutions, announced Rogers Cable, Canada's largest cable television company, has selected Sigma as its OSS vendor to support delivery of digital phone service and other new voice and data services across its service areas. Rogers plans to begin launching digital phone service in mid-2005.

Rogers, a customer of Sigma since 1995, will leverage its investment in Sigma's Service Management Platform, which currently supports more than 950,000 broadband Internet customers at Rogers, to launch its digital phone service. Additionally, in support of its digital phone service rollout, Rogers has selected Sigma's VoIP Service Package, CLEC Inter-carrier Gateway, VoIP Service Diagnostics as well as Sigma's customer self-service product Voice CSC (Client Service Center).

Sigma, which has a proven voice and multimedia portfolio, is providing solutions to several leading cable operators worldwide including Adelphia Communications, Comcast Cable, Cox Communications, LiWest Kabel, Shaw Communications and @NetHome Japan.

Sigma's solutions are designed to help cable operators drive new revenue opportunities and reduce operating costs. These comprehensive, integrated cable solutions span high-speed data services, ISP services, voice, multi-media, on- demand and managed commercial network services for business customers.

"Rogers' deployment demonstrates Sigma is working closely with its customers to bring innovation to the cable industry through next generation subscriber voice and data services," said Tim Spencer, President and COO, Sigma Systems. "Rogers is capitalizing on the benefits of the end-to-end automation inherent in our solution and that is allowing Rogers to deliver and manage its rapidly expanding subscriber base, more efficiently than ever before.

The Sigma Service Management Platform and VoIP Service Package provide order management, resource management, service provisioning and inter-carrier gateway integration (i.e. E911, LSR, LNP, BLIF, PIC/CARE) capabilities for VoIP services such as dial tone, voice mail, long distance service provider selection and CLASS/calling features. The solution provides an open standards-based integration framework that provides the ability for Rogers to integrate with its billing support systems (BSS), CLEC partner, as well as provisioning of its VoIP Softswitch, Nortel's Communication Server (CS) 2000 - Compact, and MTA devices. Rogers also leverages Sigma's Service diagnostics product which has been extended to support capabilities for VoIP service diagnostics to help technical service representatives diagnose service problems such as no dial tone, and poor voice service quality.

The functionality of Sigma's OSS solution set enables Rogers to abstract the services it offers from the underlying service network technologies, thereby promoting a high-degree of service flexibility and adaptability. It also allows Rogers to easily evolve and change its network and add new vendor systems, while shielding the impact to existing service offerings.

The Sigma Cable VoIP Service Package provides a robust OSS service management solution that is pre- integrated to define, provision, and maintain voice services on a broadband PacketCable or SIP network. The service package encapsulates the voice services domain expertise and best practices that Sigma has gained from working closely with many of the world's largest cable system operators.

The Sigma Voice CSC greatly reduces CSR operational costs for routine changes/updates to subscriber's service profile by reducing the volume of call center activity. The product's e-portal allows subscribers greater autonomy in managing their voice services online. Subscribers can now view their account and service information, select new service features and feature bundles, and make changes to features and personal parameters. Self-service even allows a provider to roll out new services that would not contribute profitably if burdened by legacy CSR costs. The Sigma Voice CSC enables cable VoIP service providers to rapidly attain competitive parity with the self-service portal functionality at pure VoIP carriers, as well as exceed the more conservative self-service offerings typical of legacy carriers. The net result is to make new voice service offerings much more attractive to customers - enhancing the "stickiness" of the overall cable service bundle.

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 world-wide. Sigma's clients serve over 40 million subscribers.

About Rogers
Rogers Cable Inc. is a wholly owned subsidiary of Rogers Communications Inc. (TSX: RCI; NYSE: RG). Rogers Cable passes 3.3 million homes in Ontario, New Brunswick and Newfoundland, with 69% basic penetration of its homes passed. Rogers Cable pioneered high-speed Internet access with the first commercial launch in North America in 1995 and now approximately 27% of homes passed are Internet customers. With 99% of its network digital ready, Rogers Cable offers an extensive array of High Definition TV, a suite of Rogers On Demand services (including Video on Demand (VOD), Subscription VOD, Personal Video Recorders and Timeshifting channels) as well as a large line-up of digital, multicultural, and sports programming. Approximately 30% of Rogers basic subscribers are also digital customers and approximately 42% are Rogers Hi-Speed residential and business customers. Rogers Cable also owns and operates 294 Rogers Video Stores.

For more information:
Sigma Systems:
John Sacke
Sacke & Associates Inc
+1.416.493.5723 ext 201
johns@sackepr.com