Communication apparatus having alternate message communication
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United States of America Patent
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-
Aug 25, 1992
Issued Date -
N/A
app pub date -
Jan 28, 1991
filing date -
May 9, 1988
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A message communication apparatus includes a connection unit, including a DC loop forming circuit, a DC loop detection circuit, and relays, for connecting a data communication apparatus through a connection line, a message communication unit, including a message circuit and a handset, for performing message communication without being through the data communication apparatus, a requesting unit, including a hook switch, for requesting a connection between a communication line and the message communication unit, an IR sending circuit for generating a ringing signal to the data communication apparatus upon detection of an incoming call, and a control circuit for connecting the communication line and the data communication apparatus upon detection of the incoming call when the requesting unit does not output a connection request.
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