Communications system
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United States of America Patent
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-
Apr 23, 2002
Grant Date -
N/A
app pub date -
Mar 19, 1999
filing date -
Nov 26, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A communications system includes a telecommunications link (3) between a remote terminal (CPa-c) (such as a burglar alarm control panel) and a control station (1). Polling requests are transmitted on a digital messaging channel which is carried by the telecommunications link. The remote terminal (CPa-c) generates a poll response message which is partially encrypted and is returned on the digital messaging channel to the control station where it is decoded.
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