Sigma Systems Group designs, develops, and deploys OSS service management solutions for communications service providers (CSPs). Its software provides CSPs with solutions for voice (circuit switch, VoIP, SIP, cellular voice), video (IPTV, DTV, ITV, VOD, PPV), data (DSL, DOCSIS, 2-way satellite, mobile, and WiFi/WiMax data), and IMS-based services. It offers a Service Management Platform, which provides service management functionality required to automate order management, service provisioning and activation, subscriber service management, resource management, subscriber self-care, and service diagnostics. The company offers Service Profile Manager, which allows call center customer service representatives to place service orders generated by customer calls; Advanced Diagnostics Manager that enables customer service representatives to troubleshoot services in the event of trouble reports; the Client Services Center, which supports self-service and account self-management; Service Catalog Manager that enables product managers define the products and services that the provider offers to its customers; Service Topology Manager to manage the network resources consumed by services; Telephone Number Manager for administration of telephone numbers; the Service Creation Toolkit for IT staff and process analysts to create underlying adapters; and Service Activation Manager (SAM), which provides business and operational benefits for broadband service providers. In addition, it provides industry solutions, which include cable, wireline, and wireless solutions. Further, Sigma Systems offers training and technical support services. The company has strategic relationships with Nortel and Cisco. It has operations in North America, Europe, the Middle East, Africa, and Asia. The company was founded in 1990 and is based in Toronto, Canada. Sigma Systems Group is a former subsidiary of Liberate Technologies.