Optical line protection device and optical line protection method
US6823137B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 2000 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Jun 20, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/085
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
To provide a system in which a configuration is simple and a switching of an optical line can be performed at a high speed. A protection unit for performing optical line protection by using K1-K2 information inserted into a payload is provided for each physical interface. The protection unit includes a filter for separating a payload of user data and a payload including K1-K2 information according to a control signal in a received payload, a selector for switching user data to be transmitted or K1-K2 information to be transmitted after adding a control signal of a value corresponding thereto, and a control unit for controlling an output buffer to a switch block and creating K1-K2 information to be transmitted and communicating with a physical interface card of another system on the basis of K1-K2 information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.