8M083X25 R14
APX Series P25 Interface
DVRS Installation & Programming Guide
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PART II
January 2019
Page 62 of 153
Programming the P25
‘DVRS Enabled’ PSU
The P25 DVRS Enabled PSU needs to be affiliated on the P25 FNE through the DVRS
therefore its ASTRO Unit ID and TG ID must be valid and allowed on the FNE side.
Typically the conventional ASTRO PSU Unit ID is set to match that of the Trunking system
PSU ID in in-band applications. In cross-band application the ASTRO PSU unit ID must
be enabled in the P25 system in order to be able to affiliate and communicated through
the DVRS.
If
Fireground (FG)
signaling is enabled in the PSU, ensure that the programmed
“Tx
Voice Type”
(analog or d
igital) matches the type of corresponding DVR “FG Enabled”
channel (analog or digital).
Remote Talk Group Steering
allows local PSU user to remotely change the TG / channel
currently selected on the MSU by sending a call alert / page to the DVR (using the DVR
ID) and transmitting a specific NID.
If
Remote Talk Group Steering
is required, the PSU must be programmed to transmit on
the same DVR channel with different NIDs, which NIDs are then strapped to the desired
MSU modes in the Tweaker Mobile Radio Channel Setup screen.
When the DVR receives a call alert page with given NID, it steers the MSU to the mode
associated with this NID. The DVR Tx NID is as programmed and must be matched with
the PSU Rx NID! The PSU is programmed with various Transmit NIDs (used for the
steering) but the same Receive NID (or F7E). The DVR Rx NID is programmed to match
the PSU Tx NID programming when no remote mode steering is needed.
XTS Series ‘DVRS Enabled’ PSUs
If the
XTS ‘DVRS Enabled’ PSU needs to support say 10 TGs via DVRS, then the PSU
needs to be programmed with 10 different conventional ASTRO personalities using the
designated DVRS Enabled ASTRO system. Each conventional personality must be
strapped to the corresponding TG ID from the specified TG List. Each conventional
personality is then assigned to a desired PSU mode in the Zone / Channel assignment
listing. The PSU behavior, when switched to a DVR channel, is specified by programming
the desired features in the corresponding ASTRO system ‘DVRS’ Tab. Alternatively the
PSU can be programmed with just one (or a few TG IDs) and
TG translation
can be
enabled in the DVR so that the PSU TG ID is always translated to the ID of the TG selected
on the MSU control head.
NOTE:
TG IDs are programmed in the XTS PSU conventional ASTRO Talk Group List in decimal
format.
APX Series ‘DVRS Enabled’ PSUs
If
Group Services
support is required, the “Group Text Messaging Service” in the
corresponding conventional system screen has to be set to ‘Full Decode’ in order to enable
the Group Text Feature. To enable the Group Alias Update feature, the PSU must have
the ‘OTA Radio Alias Type’ set to ‘Decode Only’ in the corresponding conventional
personality screen. ‘Selective Squelch’ needs to be programmed (instead of the default
‘Normal Squelch’) if the PSU User want to receive only Group Services for its selected
Talkgoup.
