AST July 2018 Magazine AST July 2018 Magazine Issue 24 | Page 18

Volume 25
For these reasons, ATI recommends that IP deploy-
ments use primarily wired links, perhaps with a few
wireless links to individual units in remote locations.
Wireless control of an MNS over a large area is
most effectively done with licensed VHF or UHF
radios.
ATI can support whatever options make
sense for your particular site.
July 2018 Edition
In contrast, ATI uses modems to encode
commands as digital data packets sent
over the radio and so eliminate the
most obvious vulnerabilities.
However, information technology (and accom-
panying threats) have evolved significantly
over the years.
As part of the ongoing effort to stay
ahead, the REACT5000 family of CCUs is
Wireless Security
based on a modern ARM microcontroller
Radio control systems for sirens have which includes hardware acceleration for
encryption and IP stacks with the latest
evolved greatly over the years.
security options.
Simple on/off control systems using DTMF
tones, such as those compromised in the at-
tack on the Dallas siren system in 2017, are
relatively easy to hack or spoof.
It may be used in conjunction with MassAlert-
TM which is designed to prevent intrusion and
to secure the communication links to warning 18