05812786 is referenced by 308 patents and cites 13 patents.

A public switched telephone network (PSTN) provides communication of digital data from a data provider or LAN to one or more of a plurality of subscriber premises. Asymmetrical digital subscriber line interface units operating at variable rates and in variable modes (ADSL/AVRs) over a local loop offer one-way video-on-demand and other services and carry the necessary signalling between the subscribers and information providers. In an asymmetric mode, the interface units frequency multiplex digital information with voice information to the subscriber and support transmission of a reverse control channel from the subscriber to the central office for transmission back to the information provider. Other modes are supported which permit selective bi-directional and reversible communications as well.

Title
Variable rate and variable mode transmission system
Application Number
8/494082
Publication Number
5812786
Application Date
June 21, 1995
Publication Date
September 22, 1998
Inventor
Kamran Sistanizadeh
Arlington
VA, US
Wendell N Sims
Woodford
VA, US
John W Seazholtz
Great Falls
VA, US
Agent
Lowe Price LeBlanc & Becker
Assignee
Bell Atlantic Network Services
VA, US
IPC
G06F 15/163
View Original Source