05247347 is referenced by 830 patents and cites 24 patents.

A public switched telephone network (PSTN) provides digital video signals from a video information provider to one or more of a plurality of subscriber premises. A subscriber uses either a standard telephone instrument over the PSTN or a dedicated control device over an ISDN packet network to order video programming. The request is transmitted to a designated video information provider and digital transmission connectivity is established between the video information provider and the central office serving the subscriber. Connectivity between the central office and subscriber is provided by asymmetrical digital subscriber line interface units over a local loop. The interface units frequency multiplex digital video information with voice information to the subscriber and support transmission of a reverse control channel from the subscriber to the central office for transmission on the ISDN packet data network back to the video information provider. The interfaces also allow base band signalling and audio between the central office and the subscriber for conventional telephone instrument connectivity.

Title
PSTN architecture for video-on-demand services
Application Number
7/766535
Publication Number
5247347
Application Date
September 27, 1991
Publication Date
September 21, 1993
Inventor
Arthur A Richard III
Springfield
VA, US
James M McHenry
Silver Spring
MD, US
Carl D Coddington
Accokeek
MD, US
Daniel B Konkle
Fairfax
VA, US
Donald C Klika Jr
Falls Church
VA, US
Jeffrey B Gold
Silver Spring
MD, US
Larry A Litteral
Manassas
VA, US
Agent
Lowe Price LeBlanc & Becker
Assignee
Bell Atlantic Network Services
VA, US
IPC
H04N 7/14
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