Switching method for bidirectional line switched ring and node apparatus used in the ring
US6879558B1 · kind B1 · utility
6Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2000 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Nov 28, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A switching method in a bidirectional line switched ring includes the steps of performing span switch by one node of the ring for getting rid of a fault detected by the one node, changing the span switch into ring switch when the span switch could not be performed normally, and performing the ring switch, and holding the ring switch request as an internal request of the one node when a span switch request, higher in priority than the ring switch, generated in another node is received by the one node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.