Service integrated communication transmission and interchange system
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United States of America Patent
Stats
-
Apr 3, 1984
Grant Date -
N/A
app pub date -
May 30, 1980
filing date -
Jun 1, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A service integrated communications transmission and switching system for audio, video and data, between a user terminal and a central switching station of a telephone system wherein the line connecting the user terminal with the switching station includes at most one light-conductive fiber which is utilized in wave multiplex duplex operation for the transmission and reception of signals from and to the user terminal; the narrowband services are provided by means of digital transmission with analog to digital and digital to analog conversion and multiplex and demultiplex taking place at the user end; and the broadband services are provided by means of analog transmission.
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