Data communication apparatus having an auto-calling function

Details Data communication apparatus having an auto-calling function Data communication apparatus having an auto-calling function

1993-02-03

1996-07-09

Peng, John K.

Telephonic communications

Telephone line or system combined with diverse electrical...

To produce visual-graphic copy

379 93, 358434, 358400, H04M 1106

Patent

active

055352669

ABSTRACT:
A data communication apparatus having an auto-calling function for effecting data communication in response to the reception of a signal related to data communication in a predetermined period after the auto-calling comprises a detection unit for detecting a voice signal and a unit for extending the predetermined signal monitoring period in accordance with the detection of the detection unit.

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patent: 4800439 (1989-01-01), Yoshino
patent: 4868865 (1989-09-01), Ogawa et al.
patent: 4932048 (1990-06-01), Kenmochi et al.
patent: 4939772 (1990-07-01), Goto
patent: 5022071 (1991-06-01), Mozer et al.

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