Site Trunking; Determining Current Site And Searching For A New Site; Locking/Unlocking A Site; Zonefail Site Lock - E.F. Johnson Company 5300 SERIES Operating Manual

1. Assume that you have attempted to place a call and
the system was busy ("BUSY" displayed and busy
tone sounded).
2. Release the PTT switch and then press it for 5
seconds or more. If a chirp-like tone sounds with the
PTT switch pressed, busy override is occurring.
NOTE: Remember that not all members of the talk
group are receiving your message. Missing mem-
bers will start receiving your message as channels
become available.

6.14.3 SITE TRUNKING

Site trunking occurs when a site can no longer
participate in wide area trunking. It is disconnected
from other sides and only supports calls with other
radios on that site and cannot route audio to other
sites. When site trunking is occurring, the radio
searches for other sites that may provide wide area
coverage.
Site trunking ends when a wide area coverage site
is located, the current site is operating again as a wide
area coverage site, an out-of-range condition occurs,
or the failsoft mode is entered. The radio can be
programmed so that "Site Trunking" is displayed and/
or an alert tone sounds when site trunking occurs.
SmartZone and P25 trunked systems can be
programmed for "Disable Site Trunking Operation".
The radio is then not allowed to start or operate on a
site trunking site. If a site goes into site trunking, the
radio leaves that site's control channel and attempts to
find another valid wide area site. If no wide area site is
available, the radio displays "Out-of-Range". If a site
adjacent to the current Home Site was in site trunking
but then enters wide area trunking, it is evaluated to
determine if it should move to that site as a better site.
This feature is available with firmware 1.28/2.6/3.6/
4.2 or later only.
6.14.4 DETERMINING CURRENT SITE AND
SEARCHING FOR A NEW SITE
To display the RSSI level of the current site, press
the SEARCH option switch. The display then indi-
cates the current site number as "SITE xx" and the
RSSI (Receive Signal Strength Indicator) signal level
as "RSSI xx". This mode is then automatically exited.
SMARTNET/SMARTZONE/P25 TRUNKED FEATURES
To scroll through the other programmed sites,
press and hold the 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.

6.14.5 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 LOCK option
switch. 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
the LOCK option switch again and "UNLOCK" is
momentarily displayed.

6.14.6 ZONEFAIL SITE LOCK

This is an optional feature that can be enabled
only by factory programmed. It is not programmed by
the PCConfigure software, and 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
6.14.3 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 1
minute for the Zone Fail Site Lock mode to be
selected.
The result of this operation is that all radios with
the same programmed home site are forced to the
home site to communicate which ensures that they can
continue to communicate. If the home site is not avail-
able, the Out-of-Range condition tells the user to
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