PSU Affiliation
When a Local P25 PSU User selects a DVR Enabled TG, the Local PSU is affiliated via
an active Primary DVRS if:
The DVR is programmed for Digital (or Mixed) mode on the selected DVR channel.
The same Digital DVR channel is selected on both the PSU and the DVRS.
Generic P25 PSU is registered during the first Group Call made after switching to the
DVR Mode.
'DVRS Enabled' P25 PSU starts automatic affiliation process upon selection of DVR
Enabled Mode (no PTT required to start affiliation process.
If there are more than one DVRS present in the area and all are switched to the same
RF channel, only one of them will be elected as a Primary and will service the coverage
needs of all Local PSUs.
If the Primary DVR is switched OFF or leaves the scene, another active DVR (if present
and if switched to the same RF channel) will take over by changing its status from
Secondary to Primary and the Local PSUs will be affiliated via the new Primary.
Inbound Group Call
When a Local PSU is affiliated with a specific TG, the User can PTT the Local PSU and
talk to:
Other Local PSU users, which are affiliated with the same TG (not available in Half
Duplex DVR Mode).
System Users affiliated with the same TG - SYSTEM DVR mode
The audio is heard in the MSU Speaker when In Car Monitor is Enabled and if:
The Local PSU and DVRS/MSU are on the same TG.
The Local PSU and DVRS/MSU are on different TGs (proxing is enabled), the MSU
microphone is OFF Hook and the HUB Feature is enabled in the DVRS and MSU.
Inbound Private Call
An affiliated Local PSU User can make a Private Call to:
Another affiliated Local PSU User (not available in Half Duplex DVR Mode).
An affiliated System User (MSU or PSU)
Private Calls are not heard in the MSU Speaker unless the Private Call is directed to the
specific MSU.
Inbound Call Alert
An affiliated Local PSU can send a Call Alert (Page) to:
An affiliated Local PSU.
An affiliated System PSU.
Outbound Group Call
All calls received by the MSU on the currently selected TG (on the O3/O5/M5) are heard
in the MSU speaker and repeated by the DVRS to the Local PSUs affiliated with the
same TG.
April 2014
8A083X20 Rev. 16
6881013Y38-P
User's Guide
Page 41 of 70
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