Switching network for a pcm tdm system

Details Switching network for a pcm tdm system Switching network for a pcm tdm system

H - Electricity

04

Q

344/25

H04Q 11/04 (2006.01) H04Q 11/06 (2006.01)

Patent

CA 1065977

A SWITCHING NETWORK FOR A PCM TDM SYSTEM Abstract of the Disclosure A two-stage switching network is provided wherein the two stages are interconnected by a pseudo space switch. The input and output ports of the network, each comprising a plurality of channels, are partitioned into groups each one of which is common to a time division switch. Each switch comprises a serial-to-parallel or a parallel-to-serial converter circuit, a data memory and a connection memory. The space switch comprises a commutator circuit for sequentially and periodically connecting each of the input switches to each of the output switches once for each channel. The commutator comprises a plurality of layers corresponding in number to the number of bits in each PCM word. - i -

277982

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