Process for time-sequenced multiplexing of data on a transmission medium and devices to implement this process
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United States of America Patent
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Jun 25, 1985
Grant Date -
N/A
app pub date -
Sep 24, 1982
filing date -
Oct 9, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for time-sequenced multiplexing of telephone data, PCM coded, on a transmission medium, and more specifically a process for multiplexing three 10-channel systems to form a standard 30-channel system, wherein: frames and multiframes are identical in structure for all 10-channel systems; each 10-channel frame contains 11 time intervals of the same length, the first of which contains auxiliary data, for synchronization, channel signalling, etc., and the last ten carrying information to be transmitted, coded by the pulse modulation and coding technique; each multiframe comprises the same number of frames as the 30-channel system; signalling and synchronization data is distributed among the first time intervals in the different frames, such distribution ensuring reliable synchronization and minimum delay, during the change from 10 to 30 channels and vice versa.
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