Extending SONET/SDH automatic protection switching
US7570583B2 · kind B2 · utility
5Cited by
242References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2005 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Jul 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention provides a method and system for coupling a SONET/SDH network to a routing network that does not have a single point of failure. Multiple routers are coupled between the SONET/SDH network and the routing network, one for each data path; for example, a first router for the working data path and a second router for the protection data path. The routers intercommunicate to force APS to switch data paths bidirectionally, so as to allow only a single router for each data path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.