On Demand Services
On demand services interactive programming services that provide or entitle a customer to receive or gain access to specific services after they request (demand) the service. On demand services are typically provided for a single use or session with a fixed termination event (download complete) or time (viewing period). On demand services users are often billed per event for the specific service that is requested. On demand services through the television may include Internet access, videoconferencing, instant messaging and a variety of other interactive services. On demand services may be made be simplified and made more valuable through the use of sophisticated Electronic Program Guides (EPGs) that can be dynamically changed or updated.