8A083X30 Rev.11
APX Series P25 Interface
DVRS
User’s Guide
January 2019
Page 57 of 94
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 th
is 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
Phon
e 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 sends P25 m
essages to the Local ‘DVRS Enabled’ PSUs to adjust their
transmit power depending on the received signal strength 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
Digital Audio Buffering
Audio buffering is supported by the DVRS in order to eliminate loss of messages / parts
of messages due to the inherent delays associated with acquiring system access. The
Digital Audio Buffer in the DVR is programmable up to 1800ms.
