Ring and line monitor for answering machine

Details Ring and line monitor for answering machine Ring and line monitor for answering machine

1984-01-03

1985-06-25

Rubinson, Gene Z.

179 616, 179 618, H04M 100

Patent

active

045256039

ABSTRACT:
A circuit and system is provided in a telephone answering system and which responds to direct current voltage differentials on the telephone line, independent of the actual direct current voltage level, to cause the telephone answering system to return immediately to its automatic answer position in the event the called party picks up his telephone, during the announcement interval (T1), or during the message recording interval (T2). This feature permits the telephone answering system immediately to return to its original condition in the presence of either of the two foregoing events, without wasting magnetic tape on blank messages, and without the calling party having to wait until the system goes through its entire (T1) and/or (T2) cycles in the event the called party picks up after the telephone answering instrument has answered a call. An additional circuit is provided with a manual switch to permit the called party to pick up when the switch is operated without interfering with the operation of the telephone answering system, and to listen to the message being recorded by the system.

REFERENCES:
patent: 4074081 (1978-02-01), Humm

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