PSU can stay on the same TG / mode and if the MSU TG is set to TG A, the Local PSU
talks / receives TG A, when the MSU TG is changed to TG B then the Local PSU
receives / talks on TG B etc.
TG Translation requires that TG Proxing is enabled.
If TG Proxing is enabled but the Local PSU is on a TG that is not in the DVRS TG
Translation list then the DVRS will proxy any inbound / outbound calls.
Outbound call (System call) received on the currently selected MSU TG is repeated 'as
is' i.e. without any translation.
Patch can not be supported on PSU TGs that are programmed for TG Translation.
MSU Patch is supported as follows:
Inbound call from PSU on TG Translation enabled TG will be translated to the patch
supergroup and repeated locally and to the system.
Outbound call will be repeated as is (with the supergroup TG ID).
PSU Talk Permit Tones
'Go Ahead' tones are generated in the 'DVRS Enabled' PSUs (see Table 6). Different
tones are generated to indicate if the DVRS is in Local or System Mode and if the call is
clear or encrypted. As a programming option Local Mode tones can be generated when
the System is busy and only Local repeat is available. Alternatively, the PSU user can
get 'System Busy' tones and be forced to wait for system grant.
Generic P25 PSU mode does not support Talk Permit Tones when operating through the
DVRS.
Inbound Emergency Call / Alarm
When an affiliated Local PSU issues an emergency Alarm, the active Primary DVR will
process the emergency to the system as follows:
If the
'Portable ID Display'
Local PSU Unit ID will be displayed on the O5 / O3 / M5 of the current Primary DVRS.
The PSU Unit ID will also appear on the display of the other Local PSUs if they are
programmed accordingly.
During Emergency Call, the Unit ID of the Local PSU, which has initiated the Emergency
Call, may be displayed on the System PSUs / MSUs if those are programmed
accordingly.
The Local PSU ID during Emergency may also be displayed on the Dispatcher Console.
The DVR sends back an Emergency ACK to prevent the PSU from re-sending the
Emergency either right after the DVR decodes the Emergency request (if the
Acknowledge Type'
or after a System ACK has been received (if the
Mobile Radio Channel Settings
All Secondary DVRS in the area are monitoring the number of emergencies issued by
Local PSUs according to the
programmed in the DVRs
serviced Emergency Attempts exceeds the counter, the Secondary DVRs will go through
Primary / Secondary voting to select a new Primary to pass the emergency to the
System.
April 2014
box (in the DVR
on the
Mobile Radio Channel Settings
menu is set to
'Attempts Timeout'
Emergency Mode
Emergency Mode
Setup) is checked, the
menu is set to
'System Acknowledge Type'
'Site Ack'
or
'Console Ack'
and
'Attempts Counter'
Setup. If the number of detected not
8A083X20 Rev. 16
6881013Y38-P
User's Guide
'System
"VR
Ack")
on the
).
settings
Page 43 of 70
Need help?
Do you have a question about the Mobexcom P25 and is the answer not in the manual?