Communication apparatus

Details Communication apparatus Communication apparatus

1991-09-18

1993-08-24

Dwyer, James L.

Telephonic communications

Supervisory or control line signaling

Substation originated

379354, 379100, 358440, H04M 1100

Patent

active

052395766

ABSTRACT:
Communication equipment in which first and second telephone number data is registered by a single selection key and first and second telephone number data is selected and dialed according to selection key input includes a data communication device and a conversation communication device. A first detector detects the hook state of the conversation communication device and a second detector detects the presence or absence of data. In response to the selection key input to dial the selected telephone number, a controller selects either the first or the second telephone number data according to the operation of the first and second detectors.

REFERENCES:
patent: 4659876 (1987-04-01), Sullivan et al.
patent: 4782512 (1988-11-01), Hutton
patent: 4825461 (1989-04-01), Kurita et al.
patent: 4833705 (1989-05-01), Kobayashi
patent: 4864602 (1989-09-01), Yamamoto et al.
patent: 4910506 (1990-03-01), Yoshida et al.
patent: 4910766 (1990-03-01), Ogino et al.
patent: 4916732 (1990-04-01), Kotani et al.
patent: 4964159 (1990-10-01), Son

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