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LEGAL
UL/ULC COMMERCIAL BURGLARY INSTALLATIONS continued...
Protection of the Control Unit:
The local control unit and the local power supply must be protected in one of the following ways:
- The control unit and audible alarm device must be in a protected area which is armed 24 hours a day.
- Each partition must arm the area protecting the control unit and the audible alarm device power supply. This may require
duplicate protection armed by each partition. Access to this protected area, without causing an alarm, will require that all
partitions be disarmed.
- In all cases described above, the protected area for the control unit must be programmed as not-bypassable
For installations employing packet switched (network) communications such as Cellular/Wi-Fi the following
recommendations shall be followed:
- Select the Internet Service Providers that have redundant servers/systems and Back-up power.
- Routers shall have Firewalls enabled and methods to identify and protect against "Denial of Service" attacks (i.e. via
"spoofing").
- For UL Commercial Burglary applications the loss of communication with the monitoring station shall be treated as an
alarm condition by monitoring station personnel when the burglar alarm system is in the armed state, and as a trouble
condition while the system is disarmed. Packet switched data network (PSDN) interface equipment, manufactured by
other than the burglar alarm equipment manufacturer, that is not provided with the burglar alarm system and/or not
required for the processing of the signals shall be evaluated to the applicable requirements of the Standard for
Information Technology Equipment - Safety - Part 1: General Requirements, UL 60950-1, or the Standard for Audio/
Video, Information and Communication Technology Equipment - Part 1: Safety Requirements, UL 62368-1, as
communication equipment. Any network interface device which adds value or manipulates the original data packet such
as changing transmission formats, adding encryption, and the like, shall comply with the applicable requirements noted
in this standard.
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