Multiplexer with transmission back-up function

Details Multiplexer with transmission back-up function Multiplexer with transmission back-up function

1995-06-21

1997-01-28

Hsu, Alpus H.

Multiplex communications

Fault recovery

Bypass an inoperative channel

395181, 370465, 370535, 370385, H04J 322, H04L 122

Patent

active

055984029

ABSTRACT:
Multiplexer/de-multiplexer units 201 to 296 directly multiplexes or de-multiplexes data signals from terminals. A leased line allotting unit 20 normally allotting all time slots on a multiplexed signal bus 25 to the side of a high rate 6 Mbps digital leased line 3. Switched line allotting units 21 to 24 execute allotting, in the event of a trouble in the leased line, the multiplexed signal time slots on the multiplexed signal bus in four divisions to the side of respective 1.5 Mbps switched lines 41 to 44 through transmission rate conversion. A control unit executes a time slot allotting change.

REFERENCES:
patent: 5263017 (1993-11-01), Nakajima et al.
patent: 5440564 (1995-08-01), Ovada et al.
patent: 5442622 (1995-08-01), Hokari
patent: 5452286 (1995-09-01), Kitayama

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