Motorola TMR 2 Kullanıcı Kılavuzu - Sayfa 12
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TMR Agencies
In Nova Scotia, virtually all frontline emergency service providers utilize
the TMR system for communications. In addition, several of our Federal
and Municipal partners are either using the system or in various stages of
development and implementation of TMR in their operations.
Potential Problems with
Systems & Equipment
•
Coverage limitations in some remote areas.
•
Non-Province of Nova Scotia (PNS) aircraft and private vessels do
not have TMRS radios.
•
'Site Trunking' can sever a site from the wider network, but it will
continue to function within a local footprint.
•
Every site is connected to and controlled by the central system
controller in Halifax.
•
One or more sites go into 'Site Trunking' when connection to the
wider network fails (due to fi ber-optic cable cut).
•
When in "Site Trunking" each site functions for all users within its
own footprint but allows no access to dispatch or to units outside the
aff ected footprint(s).
The TMR 2 system is a very stable communications platform. There are
only a few failure scenarios that can occur within the TMRS:
•
One or more sites can independently go 'Site Trunking' due to
backhaul failure. (Backhaul is the wire or fi bre optic link from the
tower to the central controller) .
•
The Master Switch in Halifax can fail causing all sites to go 'Site
Trunking'.
•
A massive, extended power outage could cause entire system
shutdown.
•
Blocked roads could prevent access to recharge site batteries
meaning sites will fail. All sites have a battery backup to allow for
uninterrupted service during power interruptions of up to eight
hours. Some sites have generator backup.
•
Certain components that make up the system can fail from time to
time either locally at a tower site or at the central site in Halifax.
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