IMPORTANT!
Remote change of MSU TG has no effect on the operation of the rest of the PSUs
in the area when TG Proxing allowing multiple TG operation is enabled. However,
if the PSU remotely steers the MSU to a conventional channel, other PSU users
will loose trunking system access. Therefore Mode Steering requires special User
Training to ensure safe radio communication practices.
Remote Steering via Call Alert Page to MSU
Dispatcher can send a Call Alert (Page) to a specific MSU, which in turn causes DVR
mode change in the following order: OFF-SYS-LOC-OFF.
It is recommended that remote mode change is disabled in the MSU and enabled in the
DVR. If remote mode change is enabled in the MSU then the Call Alert Page feature
must be available to the Dispatcher only. The rest of the system subscriber equipment
must not have the Call Alert (Page) feature enabled since paging a specific MSU
interfaced to a DVR will toggle the DVR mode and may potentially cause loss of vital
communications.
If the DVR is programmed with the ID of the dispatcher console (and any other required
system unit IDs) then only Pages from this specific ID / IDs will cause DVRS mode
change. If "Trunking Status Send" is enabled, the DVRS will send back a mode change
status to indicate its current mode (OFF, SYSTEM, LOCAL).
Only the Dispatcher Console can interpret those status messages if programmed
correctly:
Status 1 = OFF mode
Status 2 = LOCAL mode
Status 3 = SYSTEM
Dispatcher cannot force a Non-Primary DVR to become a Primary and cannot activate a
DVR when a 'VR Disabled' mode is selected on the control head.
Trunking System Status Indication
If programmed, the following P25 Trunking system status indication is passed (if
programmed) by the DVRS to the Local DVRS Enabled PSUs when the DVRS is in the
System Mode:
Failsoft
Out of Range
Site Trunking
The above status indication is not available to Generic P25 PSUs when using the DVRS.
The status indication is passed to the Local PSU every time the status changes. If there
is no change to the status, the DVRS send status indication to the Local PSUs at a
preprogrammed time interval. The DVRS also sends a network status notification every
time a Local PSU is affiliated with the System via DVRS.
Local Mode Indication
When the DVRS is operating in the Local Mode, the PSU User can see "LOCAL ONLY"
message displayed on the PSU screen if the PSU and DVR are programmed to support
April 2014
8A083X20 Rev. 16
6881013Y38-P
User's Guide
Page 46 of 70
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