Apparatus and method for automatically blocking the transmission

Details Apparatus and method for automatically blocking the transmission Apparatus and method for automatically blocking the transmission

1994-01-24

1995-06-20

Chin, Stephen

Telephonic communications

Reception of calling information at substation in wireline...

Blocking caller id transmission

379216, 379245, 379246, 379354, 379355, H04M 156, H04M 342, H04M 500, H04M 100

Patent

active

054266939

ABSTRACT:
An automatic circuit for blocking the transmission of identifying information of a telephone calling party. The automatic circuit has an electronic circuit to detect a telephone off-hook condition. An automatic dialer is also provided and has an input which is connected to the output of the electronic circuit. The automatic dialer is set to dial a predetermined code when the electronic circuit senses the actuation of the detector which detects the off-hook condition. When the predetermined code is received by the computer of the telephone company, it will automatically block the transmission of information which identifies the calling party, and more specifically, the telephone number of the calling party. The off-hook condition detector may be an off-hook switch or a voltage comparator, and other arrangements are foreseeable to detect such off-hook condition.

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