Emergency Call; Emergency Revert Through Dvr; Emergency Revert Through Psu; Emergency Operation During Tg Translation - Futurecom DVRS User Manual

Emergency Call

Emergency Call operation provides the user with access to a voice resource on a priority
basis. The user's Emergency Call has priority over all other types of call traffic.
Upon receipt of an Emergency Call from a local PSU, the DVRS will process the call
locally as well proxy the call to the FNE. The DVR also updates its display to indicate the
PSUs Emergency Call condition. Upon PSU Cancellation of the Emergency Call, the
DVRS will clear its emergency display. The DVRS will also proxy the PSU emergency
cancellation to the P25 FNE. Emergency Hot MIC enables automatic emergency voice
transmission without having to press the PSU PTT. PSU Emergency Hot Mic is
supported only on 'DVRS Enabled' PSUs. Only the 'DVRS Enabled' PSU waits for
Emergency Alarm ACK before requesting a voice channel. If Emergency Hot MIC is
enabled in Generic P25 PSUs (or 'DVRS Enabled' XTS PSUs with firmware older than
R12.00.13), the PSU will send emergency alarm and immediately enter the call phase,
which prevents consistent emergency processing. If the MSU interfaced to the DVR is
placed in Emergency Call, the DVR will proxy the call to all Local PSUs that are in the
DVRS proxy list.

Emergency Revert through DVR

The DVR can be configured to revert local PSUs that have entered emergency by mode
steering the MSU to a preconfigured zone/channel. When the DVRS is programmed for
emergency revert and the MSU is not already in Emergency, the DVR steers the MSU to
the preprogrammed zone/channel upon receiving and Emergency Alarm / Call from the
PSU. When the DVR receives emergency cancellation from the PSU, it steers the MSU
back to the original zone / channel, provided the MSU is not in emergency and the user
has not manually changed the MSU channel.

Emergency Revert through PSU

The PSU can be configured to revert to a preprogrammed Talkgroup or zone / channel
when it enters Emergency. With the Talkgroup revert option, the PSU does not change
its mode but rather stays on the currently selected channel and performs all emergency
related voice and signaling by using the Revert Talkgroup ID. Talkgroup revert is only
supported on the APX 'DVRS' Enabled PSUs.

Emergency operation during TG Translation

Emergency operation is affected by TG Translation as follows:
•
Inbound Emergency Alarm received by the DVRS on TG X will be translated
and repeated locally on all translated TG IDs that are selected on Local PSUs,
which are currently affiliated with the DVRS. The Emergency Alarm is also
translated to the ID of the TG selected on the MSU and forwarded to the System.
•
Outbound Emergency Alarm received by the MSU on the MSU selected TG
(TG Y) will be translated and repeated to the local PSUs on all translated TG IDs
that are selected on Local, affiliated with the DVRS PSUs.
•
Inbound Emergency Call on TG X will be translated by the DVRS to the ID of
the TG selected on the MSU and will be repeated locally on the translated TG.
•
Outbound Emergency call received on TG Y selected on the MSU will be
repeated by the DVRS to the Local PSUs on TG Y.
•
If Emergency Revert is programmed in the local PSU then:
January 2019
8A083X30 Rev.11
APX Series P25 Interface
DVRS User's Guide
Page 62 of 94