E.F. Johnson Company 5100 ES, Руководство по эксплуатации

Страница: 130 / 212

6-16 ES Series Models II/III Portable Radio Operating Manual
SMARTNET / SmartZone / P25 Trunked Features
One talkgroup in the scan list can be designated a priority talkgroup by programming or it
can be the selected talkgroup. When scanning, messages on a non-priority talkgroup are
interrupted by messages on the priority talkgroup. Priority scanning must also be
supported at the system level for it to occur as programmed in the radio. P25 trunking
supports dual priority scan, therefore two priority talkgroups can be selected.
The Control Channel handles all traffic for the radios and communicates which talkgroups
are using which channels. If the radio “receives” the ID for one of its talkgroups, it can go
to that channel and hear the talkgroup. When the radio is on the voice channel, it cannot
receive information about which talkgroups are on which channel. The radio will not know
about any new talkgroup activity until it finishes the voice channel and returns to the
Control Channel.
If a talkgroup is set as a Priority Monitor talkgroup on the system, the system sends the
talkgroup’s call information over a voice channel so it can be detected and move to this
priority call. So even if the radio cannot hear the Control Channel, it will receive the call
information and switch to the channel with the priority call.
Note
The Priority Monitor must not be confused with Transmit Priority, which is used when a
call is placed in Queue when all the Voice Channels are busy.
6.11 Dynamic Regrouping
The dynamic regrouping feature allows a dispatcher to change the current talkgroup or
button radios to a predefined regrouping channel to receive a new talkgroup. When the
console issues a regroup order, the radio switches to the designated regroup talkgroup.
Note For certain SMARTNET/ SmartZone dynamic regrouping operations (such as pre-
recorded messages) to function properly, the regroup talkgroup must be defined in the
system talkgroup table. Otherwise the radio cannot determine whether the regroup
talkgroup is analog or digital.
If the Cancel Dynamic Regrouping option button 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 talkgroup can be manually
changed and the previous talkgroup is reselected. If a locked regroup command is
received, the displayed talkgroup 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, a 765 Hz tone sounds every 25 ms for 300 ms and the
radio automatically changes to the regrouping channel. “Dyn Regrp” is displayed.