Hierarchical bus type multidirectional multiplex communication s

Details Hierarchical bus type multidirectional multiplex communication s Hierarchical bus type multidirectional multiplex communication s

1993-02-25

1994-07-19

Chin, Wellington

Multiplex communications

Wide area network

Packet switching

370 943, 3701101, H04J 312

Patent

active

053316339

ABSTRACT:
A downward transmission line D and an upward transmission line U are provided with a control channel CCH and n pieces of voice channels VCH1-VCHn respectively. Control channel use flag data 101 showing a "free" or "engaged" state of the channel, mode data 102 showing "a control channel retention mode" or "a call-out mode", call-out station number data 103 showing "a station number of a call-out tributary station", transmission voice channel number data 104 showing "a number of voice channel for transmission", reception voice channel number data 105 showing "a number of voice channel for reception", and call-in subscriber number data 106 showing "a subscriber number of a call-in subscriber", are multiplexed on the control channel CCH. Voice channel use flag data 201 showing a "free" or "engaged" state of the cannel and voice data 202 being individual data are multiplexed on each of the voice channels VCH1-VCHn.

REFERENCES:
patent: 4393492 (1983-07-01), Bishop
patent: 4686668 (1987-08-01), Koseki et al.
patent: 4768202 (1988-08-01), Lacroix et al.
NEC, Computers and Communications, "DRMASS Digital Radio Multiple Access Subscriber System", Cat. No. E42287.

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