Motorola MTX1550 Guide De L'utilisateur page 55

20L01-A_PR_UG_MTX4500.book Page 53 Friday, April 13, 2007 2:47 PM
Preferred Site Selection
SmartZone radios can have up to eight sites that are
individually set as either always preferred, most
preferred, or least preferred. The default value is no
preference. This feature is programmed via the CPS.
A SmartZone radio always attempts to stay on this
site whenever possible unless the receive signal
strength indication (RSSI) level falls below the
unacceptable level. The radio periodically checks
the RSSI levels of its preferred site(s) to ensure
that it always operates on the best preferred site
(more than one preferred site can be enabled).
A site marked in this fashion is one level of
preference below always preferred. The radio
attempts to remain on this site unless an always-
preferred site is determined to have either the
same or a higher RSSI level. The radio always
determines the best most-preferred site and
switches to it whenever possible.
Always-Preferred Site
Most-Preferred Site
Non-Preferred Site
A radio operating in this site switches sites if an
always preferred or most-preferred adjacent site
with the same or higher RSSI level is discovered.
The radio always determines the best non-
preferred site and switch to it whenever possible.
Least-Preferred Site
A radio operating in this site switches sites if any
of the above site rankings for any adjacent sites
are discovered and their RSSI levels are at least
at the acceptable range. The unit always
determines the best least-preferred site and
switch to it whenever possible.
Busy Override
With the introduction of dynamic site assignment,
critical site, and critical user concepts in SmartZone,
the busy processing rules were changed to allow users
to communicate with some of the trunked mode
members instead of waiting for all trunked mode
members in all sites to be available. A busy override
request can be made to request for the grant, even
though one or more non-critical states are busy. Busy
override is not a radio codeplug option but is enabled
or disabled via the SmartZone manager.
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