发明名称 |
FAULT DETECTION AND ISOLATION IN A SYNCHRONOUS OPTICAL NETWORK (SONET) AND IN A SYNCHRONOUS DIGITAL HIERACHY (SDH) NETWORK |
摘要 |
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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申请公布号 |
CA2277493(A1) |
申请公布日期 |
2000.02.20 |
申请号 |
CA19992277493 |
申请日期 |
1999.07.16 |
申请人 |
AT&T CORP. |
发明人 |
ZELINGHER, SIMON S.;CHAUDHURI, SID;AFFERTON, THOMAS S.;DOLLARD, PETER M. |
分类号 |
H04J3/14;H04Q3/00;H04Q11/04;(IPC1-7):H04L7/04;H04B10/08;H04L12/12;H04L12/24 |
主分类号 |
H04J3/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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