Telephone apparatus with a continuously-connected DC-isolated modem
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United States of America Patent
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-
Apr 2, 1996
Grant Date -
N/A
app pub date -
Oct 13, 1993
filing date -
Oct 14, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Telephone apparatus including a loudspeaker and a microphone, a speech transmission network that on the one side is coupled to the loudspeaker and the microphone and on the other side can be coupled to the telephone lines, and a modem having an input and an output, wherein the modem for AC-currents is directly coupled to the speech transmission network and for DC-currents is isolated from the speech transmission network. By these features it is possible to provide a telephone apparatus having the possibility of data-communication with as little as possible additional components, so that the telephone apparatus can be very low priced.
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