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SMARTNET/SMARTZONE/P25 TRUNKED FEATURES
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6.13 DYNAMIC REGROUPING
The dynamic regrouping feature allows a 
dispatcher to change the current talk group or switch 
radios to a predefined regrouping channel to receive an 
important message. When the console issues a regroup 
order, the radio switches to the preprogrammed 
regroup talk group. 
If the Cancel Dynamic Regrouping option switch 
or menu parameter is programmed, it can be used to 
exit the dynamic regrouping mode if desired.
Otherwise, if the lock mode was not specified, the 
selected talk group can be manually changed and the 
previous talk group is reselected if power is cycled. If 
a locked regroup command is received, the displayed 
talk group cannot be changed manually or by cycling 
power. It can be changed only after a clear order is 
received from the console. 
Dynamic regrouping operates as follows:
1. When this command is received, alternating tones 
sound and the radio automatically changes to the 
regrouping channel and “DYN REGRP” is 
displayed. 
2. Manually select the channel corresponding to that 
alias. If this is not done, transmission still occurs on 
the new channel, but the alternating tones sound 
each time the PTT switch is pressed.
3. Talk and listen as usual. When dynamic regrouping 
is canceled by the dispatcher, a short tone sounds. If 
a standard channel is not selected after this occurs, 
transmission is not allowed if the talk group is 
assigned as a dynamic regrouping talk group only. If 
it is assigned as a normal talk group, normal trans-
missions are allowed. 
6.14 SMARTZONE AND P25 TRUNKED 
UNIQUE FEATURES
6.14.1  INTRODUCTION
®
 
mode provides wide area coverage by allowing 
roaming between SMARTNET and conventional sites. 
The P25 Trunked mode can provide access to a single 
trunked site or roaming between several trunked sites. 
Operation in these modes is the same as just described 
in the preceding sections (6.1-6.13) with the following 
additional features:
6.14.2  BUSY OVERRIDE
The busy override feature is enabled at the system 
level by the system manager and is not a program-
mable radio feature. It allows a call to be placed even 
if not all sites you are calling have a free traffic 
channel. The only sites guaranteed to be included are 
the Critical Sites and the sites where a Critical User is 
located. This feature operates as follows:
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 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 
members 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