Time-divison multiplex switching network with spatial switching

Details Time-divison multiplex switching network with spatial switching Time-divison multiplex switching network with spatial switching

1978-01-19

1979-07-24

Brown, Thomas W.

H04J 300

Patent

active

041623754

ABSTRACT:
A TDM/PCM switching network comprising a plurality of time and spatial switching circuits associated with different groups of TDM lines. The present invention is primarily concerned with the manner in which these time and spatial switching circuits are arranged to transmit PCM words from a particular origin route to a given destination route. The spatial switching circuits each include intermediate storage means having a plurality of individual storage positions which are individually assigned to a predetermined destination route in the switching network. Time slots on the TDM lines are divided into a plurality of time intervals each associated with a particular TDM line of the group of TDM lines connected to the time circuit. Time slots are transmitted to the spatial switching circuit which includes a holding storage for allocating the PCM signal contained in the time intervals of a particular time slot to an intermediate storage according to the time slot or time channel itself. The PCM signals are connected to the appropriate destination TDM line through a demultiplexer/multiplexer device and other spatial switching circuits.

REFERENCES:
patent: 3597548 (1971-08-01), Drinnan et al.
patent: 3639693 (1972-02-01), Bartlett et al.
patent: 3678206 (1972-07-01), Dupieux et al.
patent: 3678206 (1972-07-01), Dupieux et al.
patent: 3736381 (1973-05-01), Johnson et al.
patent: 3743789 (1973-07-01), Krupp
patent: 3790713 (1974-02-01), Neufang

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