Telephone ring detection method and apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jul 26, 1994
Grant Date -
N/A
app pub date -
Jan 15, 1992
filing date -
Jan 15, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ring detection device adapted to be connected in a telephone line to a telephone or telephone device. The device includes circuitry for distinguishing between several differently encoded telephone ring signals and enabling and/or maintaining disablement of the telephone or telephone device to which it is connected based upon such distinction. The device includes a switch for selecting which of the incoming telephone ring signals the telephone or telephone device to which is it connected is enabled.
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Family
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Cited Art Landscape
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