System and method for communicating TDM traffic through a packet switch fabric
US7242686B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2003 |
| Grant date | Jul 10, 2007 |
| Priority date | — |
| Expiry date | Dec 28, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5675
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method are provided for communicating TDM communications through a packet switch fabric. The method comprises: accepting native TDM frames; converting the native TDM frames to fabric-cellified TDM frames; differentiating the cells of each frame into time slots; interleaving the frame time slots; TDM scheduling the interleaved frame time slots; and, routing the interleaved frame time slots between input port cards and output port cards on backplane data links through an intervening crossbar. TDM scheduling the interleaved frame time slots includes: an input port card ingress memory subsystem (iMS) receiving a first TDM configuration schedule including interleaved frame time slots cross-referenced to backplane transmission times; and, an output port card egress MS (eMS) receiving a second TDM configuration schedule including interleaved frame time slots cross-referenced to egress channel transmission times. Then, the routing is performed in response to the TDM schedules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.