Method and apparatus for notifying completion of data communicat

Details Method and apparatus for notifying completion of data communicat Method and apparatus for notifying completion of data communicat

1989-01-31

1991-09-03

Ng, Jin F.

Telephonic communications

Telephone line or system combined with diverse electrical...

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

379 59, 379 97, 379100, H04M 1100

Patent

active

050461877

ABSTRACT:
A mobile radiotelephone for speech communication and data communication using signals of a voice frequency in a voice frequency band, having a tone signal generating circuit and connected to a data terminal equipment. Data communication completion is monitored, and the tone signal generating circuit is actuated to generate a tone signal by the speaker of a handset upon the completion of data communication in order to notify the operator of the completion of data communication. The speaker of the handset can be made to sound by controlling the existing tone signal generating circuit for tone dial. Thus, the mobile radiotelephone is able to notify the operator of the completion of data communication without requiring any additional tone signal generating circuit specially for such a purpose.

REFERENCES:
patent: 4306116 (1981-12-01), McClure et al.
patent: 4524244 (1985-06-01), Faggin et al.
patent: 4837800 (1989-06-01), Freeburg et al.
patent: 4881129 (1989-11-01), Mitsuhashi

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