8A083X30 Rev.11
APX Series P25 Interface
DVRS User’s Guide
January 2019 Page 28 of 94
Remote Activation of the DVRS
Via Call Alert (Page) to DVR
NOTE:
This feature requires the use of a P25 PSU and implies Digital or Forced Analog DVRS
mode of operation.
To remotely activate a DVR, the PSU user can send a Call Alert (Page) with the ID of
the specific DVR.
Upon receipt of a Call Alert (Page) from the PSU the DVR will:
• Switch from OFF or LOCAL mode to SYSTEM mode (unless it is already in the
SYSTEM mode). If the selected DVR / MSU channel is programmed as LOCAL
only, the DVR will switch from OFF to LOCAL mode.
• Switch to Primary status and force any other Primary DVR to become a
Secondary unless there is a Permanent Primary (on the same DVR channel)
already present in the same area.
• Force the MSU to revert to a TG selected on the PSU (if programmed).
Via PSU Emergency Alarm
The DVR switches from OFF to SYSTEM mode after a programmable number of
Emergency Alarm attempts sent by a PSU are successfully received by the DVR and are
not serviced by another (Primary) DVRS.
Via PSU DTMF Tones
To remotely activate a DVR (analog mode), the PSU user can send a preprogrammed
DTMF sequence, which can be received by DVRS in the PSU radio coverage area.
Upon receipt of the preprogrammed DTMF sequence from the PSU the DVR will:
• Switch from OFF or LOCAL mode to SYSTEM mode.
• Switch to Primary status unless there is already a Primary / Permanent Primary
DVRS (on the same DVR channel) already present in the same area.
DTMF activation is supported on analog or mixed mode DVR channels only.