Telephone terminal apparatus and method

Details Telephone terminal apparatus and method Telephone terminal apparatus and method

1998-04-17

1999-11-23

Tsang, Fan S.

Telephonic communications

Supervisory or control line signaling

Using line or loop condition detection

379165, 379393, H04M 342

Patent

active

059913983

ABSTRACT:
A telephone apparatus comprises a first audio input device, a second audio input device, a first audio output device, and a second audio output device. The telephone apparatus is operative to couple the first audio input device and the first audio output device to a first telephone line. In response to a first signal, the coupling between the first audio input device and the first telephone line is modified, and the second audio input device and the second audio output device are coupled to a second telephone line.

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patent: 5590414 (1996-12-01), Marui et al.
patent: 5764743 (1998-06-01), Goedken et al.

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