Operating Manual

6-18 5100 ES Models II/III Portable Radio Operating Manual March 2008
SMARTNET / SmartZone / P25 Trunked Features
6.13.3 Determining Current Site and Searching For New Site
To display the RSSI level of the current site, press the Site Search option switch or select
that menu parameter. The display then indicates the current site number as “Site xx” and
the RSSI level as “RSSI xx”. This mode is then automatically exited.
To scroll through the other programmed sites, press and hold the Site Search option switch
while “Site xx” or “RSSI xx” is displayed. If site lock is on when site search is entered (see
following), the radio will be locked on the new site when this function is exited.
6.13.4 Locking / Unlocking a Site
It is sometimes desirable to stay on a site. To prevent the radio from searching for a new
site, lock it on the current site by pressing the Site Lock option switch or selecting that
menu parameter. The display then momentarily indicates the site alias to indicate that the
current site is locked (“x” is the current site number). To unlock the site, press and hold the
Site Lock switch again or the <F2> (Select) key and “Unlock” is momentarily displayed.
6.13.5 Auto Site Search
Auto site search automatically searches and selects the best site available. Press the Auto
Site Search option switch to display the RSSI level of the current site. Press and hold the
Auto Site Search option switch to scroll through the other programmed sites.
6.13.6 ZoneFail Site Lock
This is an optional feature that can be enabled only by factory programmed. It does not
require any special inputs from the infrastructure to operate. This feature is intended to
prevent some of the confusion resulting from a site controller failure. When this occurs, all
sites go into the Site Trunking mode and radios continue to roam normally according to
RSSI level. The result is that the various radios selected by a particular talk group may be
operating on different sites and are unable to talk to each other (see Section 6.13.2 for
more Site Trunking information).
With the Zone Fail Site Lock feature enabled, the radio continues to roam normally when
the system zone controller is active. However, if the zone controller fails, this is detected
and the Zone Fail Site Lock mode is entered. The only site the radio is then allowed to
operate on is its home site. If its home site is not available, “Out-of-Range” is displayed. A
zone controller failure is detected by determining that every site in the dynamic site list is
in Site Trunking. Currently, this condition must be detected for at least one minute for the
Zone Fail Site Lock mode to be selected.