8A083X30 Rev.11
APX Series P25 Interface
DVRS User’s Guide
January 2019 Page 24 of 94
DVRS Features by PSU Type – Motorola Infrastructure
When the PSU user is out of system radio coverage, the PSU can be switched to a
dedicated DVR channel so that the PSU can communicate via the DVRS. The features
available to the PSU user depend on the PSU type, programming and selected mode.
The table below specifies what features are supported by the different PSU types.
PSU FEATURE SUPPORT BY
DVRS
DVRS Enabled
PSU [Note 5]
Registration / Deregistration
Talk Group Proxying / Translation
Emergency ID Pass Through
System Status Broadcast (Failsoft,
Out Of Range, Site Trunking)
Automatic Revert to TA when no
DVR
Talk Permit Tones (generated by
PSU)
Leading / Trailing Tones (sent over
the air)
Radio Check / Radio Inhibit
Remote DVR Activation by PSU
Remote DVR Activation by PSU
Emergency Alarm
End to End digital on TDMA P25
Phase 2
Table 2 DVRS Features vs Type of PSU
Note 1 When selecting a DVR Mode on the Generic P25 PSU, it registers upon first Group Call. Generic
PSU is deregistered after a preprogrammed timer counting the period of inactivity expires.
Note 2 Supported only with MDC1200 capable portables.
Note 3 Analog PSU is registered on the P25 system with its MDC1200 ID.
Note 4 Requires firmware R12.00.13 or later in the XTS ‘DVRS Enabled’ PSU and R07.00.05 or later if
using APX ‘DVRS/VRX Enabled’ PSU.
Note 5 The PSU models that can be programmed as DVRS Enabled are described in Table 6.