Non-symmetric folded four-stage switching network

Details Non-symmetric folded four-stage switching network Non-symmetric folded four-stage switching network

1974-06-03

1976-06-15

Brown, Thomas W.

179 18EA, H04Q 352

Patent

active

039638723

ABSTRACT:
A telephone central office switching system including a non-symmetric four stage (ABC+D) folded network and junctor circuits whereby a communication path is established from a calling terminal over the four stage network, through a junctor circuit, and back over the four stage network to a called terminal. The junctors and associated C and D stage switching arrays (matrices) are arranged in ordered pairs related to the two sides of the junctors. Further, the ordered pairs are arranged in ordered pair groups to facilitate searching. The crosspoints of the switching arrays (matrices) comprise C-MOS driven J-FETs (FET packs) controlled and supervised by integrated circuit latch packs which provide distributed control and memory.

REFERENCES:
patent: 3491211 (1970-01-01), Bininda et al.
patent: 3511937 (1970-05-01), Bastian et al.
patent: 3618024 (1971-11-01), Leger et al.
patent: 3843849 (1974-10-01), Jovic

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