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    Electronically Cancelling Burglary Alarms         Bulletin 2030 10/09/01  
    Copyright (C) 1992, Coastal Security Systems, Inc.  All Rights Reserved.  
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    Burglar alarm subscribers frequently permit access to their homes and
business by others.  Just as frequently, they give keys and the arming code
to the person they are authorizing to enter but forget to give that person
the code to cancel a false alarm.  It is not unusual even for the subscriber
to forget the cancel code since it is seldom used.

    By programming a system to transmit an opening, exception opening, cancel
or reset signal you can prevent false alarms.  Central station dispatchers
will cancel a burglary alarm if it is immediately followed by a CANcel or
OPeNing.

Most panels allow one or more of the following signals to be programmed:

1.  An exception opening is an opening signal which is only transmitted if
    the alarm was tripped while the system was armed.

2.  A restore signal which does not follow the loop but will only be received
    when the system is disarmed or after the bell cut-off time has expired.
    When you program a panel with this feature make sure the bell cut-off time
    is more than two minutes.  Call the signal a CANcel (if you call it a
    REStore it will not automatically cancel burglary alarms).

3.  Standard opening and closing signals if you wish to provide supervised
    or unsupervised openings and closings.  An opening signal which immediately
    follows a burglary alarm will cause the dispatcher to cancel the burglary
    alarm but the opening signal itself may be dispatchable if it is received
    outside the established time windows.

    Note: this practice solves a very frequently encountered problem where a
    subscriber accidentally trips the system at closing time, then quickly
    disarms, rearms and leaves.

    Once the panel is programmed to send one of the signals described above,
you may advise the subscriber that he or she may electronically cancel false
burglary alarms simply by entering the digital disarm code at the key pad.
All other alarms, such as ambush, panic and hold-up, cannot be cancelled this
way.

IF YOU DO NOT WANT ALARMS TO BE CANCELLED:

1.  Refrain from transmitting exception opening or reset signals.  A major
    problem has been encountered when the central station operator attempts
    to make a verify call to a premises telephone that has call waiting. The
    central station operator hears ringing, but at the premises the panel is
    off hook trying to transmit the opening or reset.  The subscriber never
    gets the verify call and the central station dispatches the alarm because
    there was no answer.  The 1600hz call waiting beep can also be mistakenly
    interpreted by the alarm panel or communicator as a handshake or kiss-off
    tone and prevent reception of the signal.

2.  If you must transmit exception opening or reset signals, advise the central
    station that they are REStore signals - not CANcel signals.  A restore
    signal will not cause the central station operator to cancel an alarm.

3.  If the account transmits opening and closing signals, advise the data
    entry department to designate the account "DO NOT TM".  This will stop
    the dispatcher from cancelling the alarm but does not solve the problems
    described in item one, above.