Payload translation between frame options in synchronous digital hierarchy networks
US6633584B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1998 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Dec 21, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/1635
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
There is disclosed a method of converting synchronously between a plurality of VC-3 container streams and a plurality of STS-1 synchronous payload envelope streams within the synchronous digital hierarchy. A stream of VC-3 containers is converted to a stream of STS-1 SPEs by reading the VC-3s in a VC-4 container stream, adding redundant byte columns to each VC-3 stream and re-writing said VC-3 streams to an STS-3 synchronous payload envelope stream. Conversely, a plurality of STS-1 synchronous payload envelope streams are converted to a plurality of VC-3 virtual container streams by reading the STS-1 SPE streams from an STS-3C SPE stream; removing redundant stuff byte columns from each STS-1 SPE stream; writing the STS-1 SPE streams to a VC-4 virtual container stream; recalculating pointer positions, writing pointer bytes to the VC-4 stream, and adding a plurality of redundant stuff bytes to the VC-4 container stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.