Remote Activation Of The Dvrs - Futurecom Mobexcom P25 User Manual

Remote Activation of the DVRS

Via Call Alert (Page) to DVR
NOTE:
This feature requires the use of a P25 PSU and implies Digital 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 (as enabled by the DVR and
PSU programming).
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.
Via System / Dispatcher Call Alert Page to MSU
There are two methods for Dispatcher initiated DVRS mode change depending on the
MSU and DVRS programming.
If remote mode change is enabled in the MSU & System Console, the DVRS mode can
be switched remotely when the Dispatcher sends a Call Alert (Page) to a specific MSU
(using the MSU ID). The use of this feature assumes that the Call Alert (Page) function
is disabled in all other subscriber units and reserved for Dispatcher use only in order to
prevent random switching of the DVRS mode during unit-to-unit Call Alert. Switching
OFF an active DVRS may compromise the safety of the PSU users currently relying on
radio communications through this DVRS.
The recommended method is to have the remote mode change disabled in the MSU.
The DVRS can then be programmed with the console's Unit ID (or range of IDs) and
only pages received by the MSU from those programmed unit IDs when received by the
MSU will cause DVRS mode toggle. This way the call alert feature can be used in the
April 2014
8A083X20 Rev. 16
6881013Y38-P
User's Guide
Page 22 of 70