Switching system for an automatic telecommunication exchange wit

Details Switching system for an automatic telecommunication exchange wit Switching system for an automatic telecommunication exchange wit

1976-06-09

1978-06-27

Brown, Thomas W.

179 15AN, 179 18GF, H04J 310

Patent

active

040976939

ABSTRACT:
Switching system for an automatic telecommunication exchange with space- and time division multiplex. A two-stage switching network is described which, from the traffic-technical point of view is the equivalent of a single switching matrix. The switching network is divided into two stages in such a way that the crosstalk is reduced. The two stages are interconnected via time division multiplex intermediate lines. The intermediate lines which are not used for connection at any moment are grounded. Controlling the crosspoints does not require more routing memories as for a single switching matrix having the same number of inputs and outputs.

REFERENCES:
patent: 3308240 (1967-03-01), Von Sanden
patent: 3439124 (1969-04-01), Dupieux et al.
patent: 3825690 (1974-07-01), Kelly et al.
patent: 3864525 (1975-02-01), Edstrom et al.
patent: 3892925 (1975-07-01), Fisk et al.
patent: 3956593 (1976-05-01), Collins et al.

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