Data communication apparatus

Details Data communication apparatus Data communication apparatus

1987-08-13

1990-02-13

Ng, Jin F.

Telephonic communications

Telephone line or system combined with diverse electrical...

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

379 97, 379100, 379104, 358400, H04M 1100

Patent

active

049013432

ABSTRACT:
A dual mode communication apparatus using a telephone line as a transmission line includes a telephone unit and a facsimile unit. A control circuit is also provided to connect either one of the telephone and facsimile units to the telephone line. When a call signal is received from a calling station at a remote location, the control circuit causes the telephone line to be temporarily connected to the facsimile unit, and, at the same time, a predetermined message is transmitted to the calling station. The operator at the calling station, in response to this message, either pushes a facsimile transmission start button or makes a verbal response, such as "hello" and, if the operator at the calling station has responded by a verbal response, such a verbal response is played and thus heard by the operator at the called station. Thus, the operator at the called station now picks up the receiver of the telephone and carries out a dialing (or push button) operation, which then causes the telephone unit to be connected to the telephone line while disconnecting the facsimile unit from the telephone line, whereby a telephone communication mode is established.

REFERENCES:
patent: 4584434 (1986-04-01), Hashimoto
patent: 4639553 (1987-01-01), Kiguchi
patent: 4660218 (1987-04-01), Hashimoto
patent: 4718082 (1988-01-01), Parker et al.
patent: 4773080 (1988-09-01), Nakajima et al.

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