Mixed Mode - Futurecom Mobexcom P25 User Manual

8A083X20 Rev. 16
6881013Y38-P
User's Guide

Mixed Mode

Mixed DVR mode allows Analog DVR operation by switching between Digital and
Analog modes as described below.
The use of Mixed mode for Analog DVRS communications is not recommended since it
requires special User Training. Mixed DVR mode should only be used when both analog
and digital PSUs are required to operate on the same DVR channel.
Mixed DVRS Mode requires the MSU to be switched to a P25 Digital channel.
When a DVR Channel is programmed to operate in Mixed Mode, the DVRS can handle
calls from both P25 and Analog Local PSUs while the same DVR channel is selected on
the O5 / O3 / M5.
When Mixed Mode is selected, the DVR can be toggled between Digital and Analog
Mode as follows.
The default DVRS mode is Digital i.e. the P25 modem is enabled by default. If a Call
from a Local PSU is detected and the DVR does not decode a P25 Frame sync within
the preprogrammed 'P25 Frame Sync Detection Timer', the DVR switches to Analog
Mode and starts decoding Analog Mode signaling (such as DTMF, MDC1200). The DVR
repeats Analog signals to the Local Analog PSUs and System MSUs / PSUs on the
selected System channel / TG. After the Local PSU keys off, the DVR stays in the
Analog Mode for the duration of the preprogrammed 'VR Ch Mixed Mode Hold Timer'.
Any Outbound calls which are received by the MSU prior to the above timer's expiration
will be repeated by the DVR as Analog Conventional. Once the 'VR Ch Mixed Mode
Hold Timer' expires, the DVR returns back to Digital Mode and any Outbound calls are
repeated as digital.
Inbound analog calls received by the DVR in Mixed Mode are repeated to the System by
the MSU on the selected TG / Channel.
If TG Proxing is enabled, digital Inbound calls received by the DVR are transmitted by
the MSU on the TG selected on the Local PSU (not on the TG selected on the MSU).
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