Multiplex communications – Fault recovery – Bypass an inoperative station
Patent
1998-04-27
1999-11-09
Vu, Huy D.
Multiplex communications
Fault recovery
Bypass an inoperative station
370909, H04J 116, H04L 1228
Patent
active
059827475
ABSTRACT:
The dynamic synchronous transfer mode dual ring topology has two rings with opposite fiber directions. The dual rings may have a plurality of common nodes. A first channel may be established in a first segment extending between a first and second nodes. Tokens associated with the first channel may be provided. In this way, time slots may be transmitted in the first channel from the first node to the second node. If a fiber failure occurs in the first segment, the second node is likely to first detect the fiber failure and transmit a fiber failure message. It is then determined if the first channel extends across the fiber failure. If the first channel is affected by the fiber failure then a channel failure message is transmitted and the first channel is terminated and all the tokens associated with the first segment are removed. If the first channel is not affected then time slots are continued to be transmitted on the first channel.
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Hidell Lars Markus
Ramfelt Lars H.ang.kan
Dynarc Inc.
Fasth Rolf
Lee Chiho Andrew
Vu Huy D.
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