Apparatus for direct line switching

Details Apparatus for direct line switching Apparatus for direct line switching

1975-10-28

1977-11-15

Cooper, William C.

H04M 342

Patent

active

040586847

ABSTRACT:
Apparatus is described for use in centrally controlled telecommunication switching systems having direct line service facilities. A direct line key, via a direct line repeater, is directly connected to a specified direct line station. Through operation of an exchange key, e.g., at a switchboard, the link connecting process to the direct line station is begun using a connecting path which is ready for seizure.

REFERENCES:
patent: 3328533 (1967-06-01), Vaccaro et al.

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