Audio Buffering; Remote Dvrs Activation Via Dtmf; Remote Msu Mode Steering Via Lpsu Pl/Dpl; Steering And Emergency - Futurecom Mobexcom P25 User Manual

8A083X20 Rev. 16
6881013Y38-P
User's Guide
IMPORTANT!
MDC PTT ID pass through is not supported by the DVRS.

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.

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.
The DVR cannot be switched OFF remotely via DTMF.

Remote MSU Mode Steering via LPSU PL/DPL

The LPSU & DVR may be programmed so that when the LPSU transmit specific
PL/DPL, the DVR steers the MSU to a programmed MSU Mode. The DVR needs to be
programmed with a lookup table mapping the LPSU PL/DPL codes with their
corresponding MSU modes / channels.
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 starts after the LPSU causing the steering keys off.
This feature is only supported in SYSTEM Mode.

Steering and Emergency

If steering is disabled on the current DVR channel, LPSU emergency is declared on the
currently selected MSU channel (no steering).
If steering is enabled on the current DVR channel, the LPSU emergency is declared on
the new (steered) MSU mode.
April 2014 Page 60 of 70