Wide-band communications system

Details Wide-band communications system Wide-band communications system

H - Electricity

04

J

325/1, 363/1.9

H04J 3/02 (2006.01) H04B 10/12 (2006.01) H04Q 11/04 (2006.01) H04N 7/52 (2006.01)

Patent

CA 1190675

A B S T R A C T In an optical wide-band network with subscriber-lines, each comprising two optical wave-guides running between an exchange and the subscriber-station, only TV and/or stereo-sound wide-band signals are transmitted, through one optical wave-guide, from the exchange to the subscriber-station, whereas through the other optical wave-guide, in both directions, are transmitted all digital communications narrow-band signals - for 64 kbit/s digital telephony, facsimile, 8 kbit/s signalling, synchronizing, data-transmission-, also pos- sibly bi-directional video-telephony digital signals, between the exchange and the subscriber station. The digital communications signals in the two trans- mission directions are each transmitted in time-division multiplex in the separate-time-position process; the wide-band signals are transmitted on analog- modulated carriers.

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