Method and apparatus for channel protection switching of optical network device
US8229296B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2009 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Oct 6, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0081
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for channel protection switching of an optical network device, an Optical Transport Network (OTN) device, and a Passive Optical Network (PON) device is provided. The method includes detecting, by the PON device, whether an OTN alarm indication signal is received after discovering a fault. If the OTN alarm indication signal is received, the alarm generated by the PON device is suppressed so that the PON device does not perform channel protection switching. The PON device detects whether an OTN alarm indication signal is received, and suppresses the alarm generated by the PON device so that the PON does not generate futile alarms or lead to futile switching when the OTN fails but the PON works normally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.