Circuit for telephone auxiliary exchanges having delayed connect

Details Circuit for telephone auxiliary exchanges having delayed connect Circuit for telephone auxiliary exchanges having delayed connect

1977-07-21

1979-04-03

Cooper, William C.

H04Q 300

Patent

active

041478975

ABSTRACT:
A busy signal connecting set is immediately released by the disengagement of a connecting station participating in an existing connection, and a state of interception is established for the subscriber circuit of the subscriber station which has not yet released. The subscriber circuit is connected with a house set for the purpose of connecting the busy signal by way of time switching equipment which is activated after a delay time in response to production of the state of interception.

REFERENCES:
patent: 4009351 (1977-02-01), Hofstetter

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