Sonet data transfer protocol between facility interfaces and cross-connect
US5872780A · kind A · utility
26Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1992 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | May 21, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S370/907
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An internal signal within a SONET element has a transport format having overhead and payload mapped in a manner similar to the Synchronous Optical Network standard mapping, except having selected overhead bytes defined differently, including a byte used for communicating odd parity calculated over an odd number of bytes of a frame of the transport format to determine correct or incorrect parity, selected bytes used for inter-module automatic protection switching, and a pointer having a selected fixed value, along with an adjusted virtual tributary pointer in a virtual tributary mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.