Method and apparatus for improving premises-line call availabiliy in an alarm system
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United States of America Patent
Stats
-
Dec 6, 2005
Grant Date -
Jul 10, 2003
app pub date -
Nov 18, 2002
filing date -
Jan 10, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
When an alarm panel needs to transmit alarm data, it seizes the PSTN and disconnects the premises-wiring. If in a call, the user is cut off immediately and it appears to the user that the connection to the PSTN has been lost. If trying to place a call, the user also perceives that the connection to the PSTN is lost. The present invention provides tonal signals to the user to indicate that the PSTN line is in use by the alarm panel and also notifies the user when the PSTN connection is available for use.
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Family
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