Switching network for a PCM TDM system

Details Switching network for a PCM TDM system Switching network for a PCM TDM system

1977-05-10

1978-10-31

Brown, Thomas W.

H04J 300

Patent

active

041236246

ABSTRACT:
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.

REFERENCES:
patent: 3705266 (1972-12-01), Philip
patent: 3906161 (1975-09-01), Schlichte
patent: 3927267 (1975-12-01), Voyer et al.
patent: 3970794 (1976-07-01), Neufang

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