Telecommunication switching network having a multistage reversed

Details Telecommunication switching network having a multistage reversed Telecommunication switching network having a multistage reversed

1975-11-10

1977-08-30

Brown, Thomas W.

H04J 300

Patent

active

040456170

ABSTRACT:
A telecommunication switching network having a multistage reversed trunking arrangement and switching on a four wire basis is described. A number of single channel subscriber lines is connectible to a first switching stage. The number of subscriber lines equals the product of e . v . g where g equals the number of groups into which the subscriber lines are divided, v equals the number of subgroups into which each group is divided and e equals the number of terminals in each subgroup, or the number of termination coupling circuits in that group. A time division multiplex trunk having a number z time slots connects each subgroup of termination circuits to a second switching stage. A total of z . v . g connection channels extend between the first and second switching stages. The first switching stage includes conductor cross switching apparatus for error-free switching.

REFERENCES:
patent: 3878338 (1975-04-01), Hardy
patent: 3937895 (1976-02-01), Karl

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