Apparatus for and method of operating an automatic log on/log off circuit in a telephone system by disconnecting a headset
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 30, 1996
Issued Date -
N/A
app pub date -
May 11, 1993
filing date -
Mar 2, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Existing automatic log on/log off systems in telephone systems determine whether or not a workstation is occupied, and that calls can be directed to that workstation, by determining whether or not the amplifier that provides the interface between the telephone system and the occupant's headset is plugged into the workstation. Recent headsets have a connector in the cord between the headset and the amplifier. This enables the occupant to leave the workstation without unplugging the amplifier, which defeats sensing mechanism of the existing automatic log on/log off system. An amplifier according to the invention replaces the existing amplifier and includes a detector that determines whether the headset is connected to the amplifier, and an activator that activates the existing automatic log on/log off system in the telephone system. In the preferred embodiment, the detector senses the current drawn by the electret microphone in the headset, and the activator activates both current-sensing and voltage/resistance-sensing automatic log on/log off systems.
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Family
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