H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 3/22 (2006.01) H04Q 11/04 (2006.01) H04Q 11/06 (2006.01)
Patent
CA 2175853
A high speed time multiplexed switch (TMS) fabric unit for use in a telecommunications system having relatively low speed TMS access links. To receive signals from the low speed access links, the TMS fabric unit of the invention consists of a plurality of programmable multiplexers where each programmable multiplexer is connected to a predetermined number, J, of the access links. Eachaccess link carries M time slots where M is a relatively large number, i.e. 100. The programmable multiplexers put the content of the access links onto two high speed links. The speed of the high speed links is at least J times the speed of the access links such that for each time slot on the access links there is a fixed group of at least J time slots on each high speed link. Each of the two high speed links deliver the signals to at least one high speed TMS fabric where the speed of the high speed links is matched to the reconfiguration rate of the high speed TMS fabric. To transmitsignals from the high speed fabric to the low speed access links, the above-described arrangement is essentially duplicated in that two high speed links connect the high speed TMS fabric to programmable demultiplexers. The programmable demultiplexers deliver the content of the fixed group of J time slots on the high speed links to J access links. The TMS fabrics are non-blocking space division switches between the high speed links coming from the programmable multiplexers and the programmable demultiplexers.
Kos Richard James
Pawelski Robert Lee
At&t Corp.
Kirby Eades Gale Baker
LandOfFree
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