FAULT DETECTION AND ISOLATION IN A SYNCHRONOUS OPTICAL NETWORK (SONET) AND IN A SYNCHRONOUS DIGITAL HIERACHY (SDH) NETWORK

FAULT DETECTION AND ISOLATION IN A SYNCHRONOUS OPTICAL NETWORK (SONET) AND IN A SYNCHRONOUS DIGITAL HIERACHY (SDH) NETWORK

An in-band fault detection and isolation system and method for networks such as Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) networks. Fault detection may be quickly and efficiently performed by a network without requiring modification to any add/drop multiplexers (ADMs) and...

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Hauptverfasser: DOLLARD, PETER M, CHAUDHURI, SID, AFFERTON, THOMAS S, ZELINGHER, SIMON S
Format: Patent
Sprache:eng ; fre
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ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
SELECTING
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creator DOLLARD, PETER M
CHAUDHURI, SID
AFFERTON, THOMAS S
ZELINGHER, SIMON S
description An in-band fault detection and isolation system and method for networks such as Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) networks. Fault detection may be quickly and efficiently performed by a network without requiring modification to any add/drop multiplexers (ADMs) and/or without the involvement of an external network management system (NMS). To accomplish this without violating SONET/SDH standards, a new signal, called a fault isolation signal in the path (FIS-P), is proposed. The FIS-P may be used in lieu of an AIS-P to support special applications on certain digital cross connect (DCS)-to-DCS path segments. Moreover, the present invention may be implemented such that the behavior of path terminating equipment (PTE) is unaffected.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
SELECTING
title FAULT DETECTION AND ISOLATION IN A SYNCHRONOUS OPTICAL NETWORK (SONET) AND IN A SYNCHRONOUS DIGITAL HIERACHY (SDH) NETWORK
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