8M083X25 R14
APX Series P25 Interface
DVRS Installation & Programming Guide
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PART II
January 2019
Page 108 of 153
P25 Trunking mode. OTAR is not supported if Generic P25 PSUs are used and / or if the
MSU is on a P25 conventional channel.
Patch
When several TGs are patched on the system side (using the Trunking group-regrouping
function), the DVRS ensures the patching is matched on the local PSU side when ‘DVRS
Enabled’ PSUs are used, the DVRS is in the SYSTEM or LOCAL mode and the MSU is
on a P25 Trunking TG.
IMPORTANT!
System design must ensure that PSU TGs that are programmed for TG Translation
are outside of the range of Talkgroups used on the Trunking system.
MSU Patch is supported as follows:
•
Inbound call from PSU on TG Translation enabled TG will be translated to the
patch supergroup and repeated locally and to the system.
•
Outbound call will be repeated as is (with the supergroup TG ID).
Dynamic Regrouping
The Dynamic Regrouping feature allows a dispatcher to remotely redirect subscribers to
operate on a designated TG without any intervention from the subscriber unit operator.
This is done by remotely assigning a new TG for the subscriber to operate on. When the
subscriber receives the request, it automatically switches to the assigned zone / channel.
The DVRS extends t
his functionality to the ‘DVRS Enabled’ local PSUs when the DVRS
is in the SYSTEM or LOCAL mode and the MSU is operating on a P25 Trunked channel.
PSU Reprogram request (PSU requesting to be dynamically regrouped or ungrouped) and
Selector Lock / Unlock (disabling / enabling the zone/channel selection functionality while
a PSU is dynamically regrouped) are not presently supported via the DVRS.
NOTE:
Dynamic Regrouping is not supported on Generic P25 PSUs.
Phone Interconnect
Pho
ne Interconnect is supported on local P25 ‘DVRS Enabled’ PSU when the DVRS is on
a full duplex P25 channel (digital or mixed mode) and the MSU is on a P25 Trunked mode.
Phone Interconnect requires the DVR to be in the SYSTEM or LOCAL mode.
Adaptive Power Control
The DVRS can be programmed to send P25 messages to the Local PSUs to adjust their
transmit power depending on the received signal strength from the DVRS and thereby to
conserve the PSU battery. Enabling this feature is NOT recommended in applications
where multiple PSUs are used with a single simplex mode DVRS since it will affect the
PSU-to-PSU communications range.
NOTE:
Adaptive Power Control is supported on both
‘Generic P25’ XTS/APX PSUs as well as on
“DVRS Enabled” PSUs.
