8G093X01 R5
VR Programming Guide
August 2022 Page 52 of 144
NOTE:
TG ID 1 can be added to the VR Translation tables so that PSU calls coming from Generic P25
PSUs (with TG ID 1) will be translated to the TG ID currently selected on the MSU, while ‘DVRS
Enabled’ PSUs will be able to make proxied calls on their selected TG IDs.
If the conventional P25 system is using dedicated TG IDs, then the ‘DVRS Enabled’ or Generic
P25 PSU must be programmed with corresponding conventional personalities using the required
TG IDs.
Programming of the P25 XTS PSU (Generic P25 or ‘DVRS Enabled’) for Inbound Digital
Takeover
A Generic P25 XTS PSU must have Smart PTT disabled if “Outbound Takeover by Voice Allowed”
is enabled in the VR.
Programming of Analog Conventional PSU for Analog VR Mode
The programming of any PSU for analog mode involves the following:
• PSU Tx frequency and Tx PL/DPL must match the VR Rx frequency and Rx PL / DPL.
• PSU Rx frequency and Rx PL/DPL must match the VR Tx frequency and Tx PL / DPL.
• Adjacent channel spacing programming of the VR channel and PSU must be the same i.e.
either 12.5kHz or 25kHz.
• If MDC Emergency is to be used by the PSU, the PSU must have MDC1200 signaling
enabled. The MDC1200 System Pretime must be set to 50ms if the PSU Emergency ID is to
be seen on other System radios that are on the same TG. If the MSU has the default System
Pretime of 700ms, the PSU Emergency ID will only be displayed on the Dispatcher Console.
• Preamble during pretime must NOT be enabled.
• If MDC1200 Emergency alarm is used when the MSU is on a trunked channel, the MDC ID
(hex) must be allowed on the Trunking system side (see MDC PTT ID offset)
• If DTMF signaling is used, the DTMF sequence programmed in the PSU must end with a ‘*’
i.e., 123*.
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