Digital transmission apparatus for subscribers having switching

Details Digital transmission apparatus for subscribers having switching Digital transmission apparatus for subscribers having switching

1993-08-19

1995-09-19

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 68, H04L 122, H04Q 1108

Patent

active

054522862

ABSTRACT:
A digital transmission apparatus for subscribers, includes a switch function unit performing multiplexing into subscriber time slots by receiving as its input transmission signals communicated between subscriber side transmission lines and feeder transmission lines. The apparatus sets one or more lines among a plurality of feeder transmission lines as a protection transmission line with respect to an active feeder transmission line. A selector function unit performs a connection change-over of the path of the active feeder transmission line in which a transmission fault occurred to a protection transmission line preliminarily allocated to the related active feeder transmission line.

REFERENCES:
patent: 4967406 (1990-10-01), Yagi et al.
patent: 4985904 (1991-01-01), Ogawara
patent: 5010550 (1991-04-01), Hirata
patent: 5014261 (1991-05-01), Shinbashi et al.
patent: 5163041 (1992-11-01), Moriyama

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