Internet telephony devices with circuity to announce incoming calls
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 13, 2007
Grant Date -
Oct 25, 2001
app pub date -
Feb 5, 2001
filing date -
Feb 4, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system detects an incoming telephone call and routes the ring signal to a loudspeaker so that it can be heard at a distance from the telephony device. Once the incoming call has been acknowledged the incoming signal is routed to the headset. New incoming calls are identified by verifying the presence of unique characteristics that are found only in incoming calls. In a conventional telephone the unique characteristic can be a combination of frequencies which are part of the ring signal. The frequencies can be verified by using a bandpass filter which allows only frequencies centered around the ring frequency to pass. Therefore, if a signal of correct frequency is present it will pass through the bandpass filter and activate a switch that routes the signal to the loudspeaker.
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