Frame based data transmission over synchronous digital...

Details Frame based data transmission over synchronous digital... Frame based data transmission over synchronous digital...

H - Electricity

04

L

H04L 12/56 (2006.01) H04J 3/16 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2276958

A frame based data communications network is interfaced to a synchronous digital hierarchy network via a plurality of frame based data port cards incorporated into a plurality of synchronous multiplexers. Each port card comprises a conventional frame based data port, a frame switch, a rate adapter means and a mapping means for mapping data frames into a plurality of SDH virtual containers. Frame based data is incorporated directly into a synchronous virtual container without encapsulation in an intermediate protocol. A number of topologies of a frame based data channel network are possible, overlaid on the underlying synchronous transport network, including an open loop topology, a ring mode topology, and a backhaul topology.

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