Futurecom DVRS - Remote DVRS Activation Via DTMF; P25 Encryption in Analog Mode; Mobile Mode Steering Via PL;DPL; Steering and Emergency

8A083X30 Rev.11
APX Series P25 Interface
DVRS User’s Guide
January 2019 Page 76 of 94
Remote DVRS Activation via DTMF
The local PSU may be programmed to remotely activate the DVR by switching it from
OFF or LOCAL to SYSTEM mode by sending a pre-programmed DTMF sequence. The
remote activation only works if the Local PSU and the DVR are set to operate on the
same radio channel and there is no other Primary / Permanent Primary DVR in the area
operating on the same channel.
IMPORTANT!
The DVR cannot be switched OFF remotely via DTMF.
P25 Encryption in Analog Mode
If the MSU is receiving a P25 Encrypted call while the DVRS is operating on analog
channel, the DVRS can be programmed to do one of the following:
• Forward encrypted audio to the local PSUs
• Forward clear audio to the local PSUs
• Send warning tones to the local PSUs and no audio
P25 Encrypted audio received by the MSU is processed by the DVRS as described
below:
Call from FNE received by MSU
DVR Programming for
Outbound Encrypted Calls
DVR Transmits to receiving
Local PSUs
P25 Encrypted
Transmit Encrypted
P25 Encrypted*
P25 Encrypted
Transmit Clear
Clear Analog
P25 Encrypted
Send Warning Tones
Warning Tones
*Local PSUs must be configured for Mixed receive.
Mobile Mode Steering via PL/DPL
This feature allows a PSU User to remotely change the currently selected MSU mode by
transmitting with a pre-programmed PL/DPL. When the DVR decodes the PL/DPL it
finds the corresponding MSU mode in its look-up table and steers the MSU to the new
mode. Depending on the programming, the MSU may either stay on the new mode or it
may revert after a preprogrammed timer expires to the originally selected MSU mode.
The preprogrammed timer (‘MSU Mode Steering Hang Time’, Analog Setup) starts
after the local PSU (causing the steering) keys off.
Steering and Emergency
• If steering is disabled on the current DVR channel, local PSU emergency is
declared on the currently selected MSU channel (no steering).
• If steering is enabled on the current DVR channel, the local PSU emergency is
declared on the new (steered) MSU mode.
• When MSU is in emergency call state (‘Put DVR in Emergency Call State’ is
enabled), the local PSU calls handling is defined by the ‘Steering in
Emergency’ programming for the specific DVR channel. If ‘Steering in
Emergency’ is Disabled, the DVR repeats any local PSU calls on the emergency
channel (no steering occurs).