Externally attached handset of an end terminal used for mobile communication systems
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United States of America Patent
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-
Sep 19, 1995
Issued Date -
N/A
app pub date -
Jan 14, 1994
filing date -
Oct 14, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An externally attached handset connected between an end terminal of a mobile communication system and a data communication end terminal which handset is connected via a speaker/microphone terminal on the end terminal of the mobile communication system. The handset comprises a speaker, a microphone, a detecting device detecting a data communication signal, and an on/off circuit device which automatically disconnects a microphone from a microphone signal line when data communication is performed. The handset may further includes a display device which indicates that data communication is being performed.
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