Protection switching method and apparatus for passive optical network system
US6975586B1 · kind B1 · utility
19Cited by
6References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2000 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Mar 29, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0094
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a protection switching method for a passive optical network system, a communication abnormality is detected in at least one active-system virtual path established between an optical line terminal and a subscriber terminal through a transmission path and a network unit. When a communication abnormality is detected in an active-system virtual path, a switch is controlled to switch the transmission paths to establish a standby-system virtual path between the optical line terminal and the subscriber terminal as a communication partner. A protection switching apparatus for a passive optical network system is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.