Fault forwarding in an optical network
US7113699B1 · kind B1 · utility
16Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2002 |
| Grant date | Sep 26, 2006 |
| Priority date | — |
| Expiry date | Jul 13, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method for forwarding fault information in an optical network is disclosed. Responsive to a fault being detected at a node, the fault information is forwarded to the destination node in the form of a loss-of-signal condition by turning off laser transmitters used to propagate the signal towards its destination. Thus, a node or other network element not capable of generating an alarm signal consistent with an established alarm signaling protocol, such as a SONET alarm indication signal (AIS) or an SDH multiplexer section alarm indication signal MS-AIS, may still forward the fault condition to a downstream element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.