System for addressed timemultiplexed telecommunication

Details System for addressed timemultiplexed telecommunication System for addressed timemultiplexed telecommunication

1975-05-13

1976-10-19

Stewart, David L.

179 84SS, H04Q 138

Patent

active

039872491

ABSTRACT:
A system for addressed time multiplexed telecommunication comprising subscribers apparatus whose address selector supplies voltage levels which in a central exchange are converted to binary form and stored in address shift registers. Taken out of the registers the addresser's and addressee's addresses are converted to analogue form and compared with a step voltage from a step voltage generator, and the result of the comparison controls analogue switches which make the connection between the addresser and the addressee and break the connection when addresser or addressee presses an off-button.

REFERENCES:
patent: 3758719 (1973-09-01), Klose

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