Loop-back system in a dual ring network

Details Loop-back system in a dual ring network Loop-back system in a dual ring network

1992-03-25

1995-11-21

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 8512, 34082501, H04L 1242

Patent

active

054694280

ABSTRACT:
A loop-back recovery technique used when a failure takes place in a ring network, for transmitting information to a path indicated with a path ID number or the time slot position from a periodic frame. This is achieved by establishing working paths on one of the dual ring line between a transmission node and a receiving node thereof, establishing ring-formed protection paths in a ring line of the direction opposite to the working line, and making a loop-back from the working paths to the corresponding protection paths at a node which detected the failure. The receiving node multiplexes the working and protection paths to receive data from either.

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patent: 4704714 (1987-11-01), Tomizawa et al.
patent: 4710915 (1987-12-01), Kitahara
patent: 4930119 (1990-05-01), Kobayashi et al.
patent: 4999832 (1991-03-01), Chen et al.
patent: 5105188 (1992-04-01), Jung et al.
patent: 5150356 (1992-09-01), Tsutsui

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