Remote actuated command circuit for seizing telephone lines

Details Remote actuated command circuit for seizing telephone lines Remote actuated command circuit for seizing telephone lines

1988-11-09

1990-08-14

Ng, Jin F.

Telephonic communications

Emergency or alarm communications

Called line or station condition responsive

379 49, 379102, 379 74, 379106, H04M 1104

Patent

active

049493728

ABSTRACT:
A remote actuated command circuit establishes telephone communications between a communications device at a remote location and a local communications terminal device without interference from a telephone answering machine connected to the incoming telephone line. The remote actuated command circuit establishes these communications when it receives from the remote communications device a predetermined signal not normally available to a telephone user.

REFERENCES:
patent: 4085292 (1978-04-01), Leslar et al.
patent: 4119810 (1978-10-01), Marin et al.
patent: 4394540 (1983-07-01), Willis et al.
patent: 4549045 (1985-10-01), Castro et al.
patent: 4584434 (1986-04-01), Hashimoto
patent: 4660218 (1987-04-01), Hashimoto
patent: 4741022 (1988-04-01), Chebra et al.
patent: 4791658 (1988-12-01), Simon et al.
patent: 4794637 (1988-12-01), Hashimoto
R. A. Broomfield et al., "Making a Data Terminal Out of a Touch-Tone Telephone", Electronics, Jul. 3, 1980, pp. 124-129.

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