Signal - The Signal is the electronic make up of the data, information and/or message that's being transferred to you via a medium such as airwaves, satellite, telephone line or cable. The term "signal" is often used interchangeably with content though technically content more specifically refers to the theme, plot etc.

Consumer-generated Content

Content Delivery System (Network) - (CDS)

Content Distributors

Content-targeted Ads

Content Management System (CMS)

Interactive TV Content Providers

Interactive TV Developers

PRC (Programming-related Content)

VOD/PPV Content Aggregator

See the Interactive Television Institute.