Video entertainment in the home grew tremendously during the 1970s and 1980s, but the 1990s will be the video communications decade. The video material—coordinated images and sound—will move from mostly passive presentation to interactive origination and selection. The technology and infrastructure that already support all modern telecommunications will be used to communicate this video material to homes and businesses for personal, business, educational, and entertainment use. This paper provides an overview of some of the image‐ and sound‐compression standards, components, and AT&T products and services that will enable the video communications decade to occur. Greater detail is presented elsewhere in this issue of the AT&T Technical Journal.
The evolution of the Integrated Services Digital Network (ISDN) from a primarily analog telephony network includes the evolution of standards that define the ISDN framework and services, as well as signaling and management functions. The International Telegraph and Telephone Consultative Committee (CCITT) has already defined many of the necessary standards. For example, circuit‐switched, packet‐switched, and private‐line capabilities have been standardized, as well as two types of interfaces to connect customer premises equipment to the network. Standards need to be extended to cover, for instance, the integration of video into the ISDN framework, including the definition of a new wideband packet and fiber also need to be considered. This article describes the existing ISDN standards and presents an evolutionary scenario for future standards.
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