Data communication apparatus coupled to two telephone lines

Details Data communication apparatus coupled to two telephone lines Data communication apparatus coupled to two telephone lines

1989-07-24

1991-10-08

Ng, Jin F.

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379100, H04M 1100

Patent

active

050561332

ABSTRACT:
A data communication apparatus is connected to two telephone lines and includes a single telephone circuit, a modem and a switching circuit for selectively coupling one of the telephone circuit and the modem to a selected one of the telephone lines. A telephone call is made through the telephone circuit, and a data communication such as a facsimile communication is made through the modem.

REFERENCES:
patent: 4464542 (1984-08-01), Baudoin et al.
patent: 4524244 (1985-06-01), Faggin et al.
patent: 4825461 (1989-04-01), Kurita et al.
patent: 4850008 (1989-07-01), Berg et al.
patent: 4868865 (1989-09-01), Ogawa et al.

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