Electronic telephone exchange and method of connecting ports of

Details Electronic telephone exchange and method of connecting ports of Electronic telephone exchange and method of connecting ports of

1987-12-02

1989-01-03

Dwyer, James L.

Telephonic communications

Centralized switching system

Switching controlled in response to called station...

379166, 379269, H04M 300, H04Q 102

Patent

active

047962941

ABSTRACT:
In an electronic telephone exchange and a method of connecting ports of the exchange, highways connected to a time switch is divided into extension highways and office line highways and thus highways are connected to discrete terminals of a connector formed with extension interface circuits and office line interface circuits. Input and output terminals are provided at positions corresponding to the discrete terminals so as to connect the extension interface circuits and the office line interface circuits to corresponding highways through the input and output terminals thereby effecting exchange of communication signals through the highways.

REFERENCES:
patent: 3974343 (1976-08-01), Cheney et al.
patent: 4694452 (1987-11-01), Beckinger et al.
patent: 4736409 (1988-04-01), Hasegawa et al.

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