Method and system for synchronous high speed Ethernet GFP mapping over an optical transport network
US7873073B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2008 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Feb 5, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/0688
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An interworking device, method and system distribute reference timing between at least two communication networks. The interworking device includes a first communication interface operable to communicate with a first communication network operating using a first communication protocol and a second communication interface operable to communicate with a second communication network operating using a second communication protocol. The interworking device also includes a client generic framing procedure/optical transport network (“GFP/OTN”) mapping block in communication with the first communication interface and the second communication interface. The client GFP/OTN mapping block recovers a first reference timing signal from data received from the first communication network. At least one hybrid synchronous equipment timing source transforms the first reference timing signal into a second reference timing signal that is phase and frequency locked to the first reference timing signal, and supplies the second reference timing signal to the client GFP/OTN mapping block to clock the second communication network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.