Alarm system interface
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 10, 2002
Grant Date -
N/A
app pub date -
Apr 6, 2000
filing date -
Apr 6, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An interface for connecting an alarm system control panel and one or more telephone sets to a special telephone line is disclosed, wherein the interface includes a filter connected in series between the special telephone line and an alarm system control panel for removing special signals from the special telephone line, a controllable switch connected to the filter and the special telephone line for selectively enabling and disabling the filter, and a control circuit connected to the controllable switch for enabling the filter when the alarm system control panels goes off hook.
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Family
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Cited Art Landscape
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