E F Johnson Company 2425795 Benutzerhandbuch

Viking™ VP600 Portable Radio Operating Manual

5-19

When used in an EFJohnson P25 conventional infrastructure radio system, an option on 
the radio can be programmed to provide additional identifying information to the system 
upon receipt of a dynamic data registration request. If the “EFJ Affiliation” option is 
enabled, the radio will transmit its current talkgroup to the system in addition to its unit ID 
during a dynamic data registration request. EF Johnson Technologies also supports 
conventional standardized IP data context activation registration without the EFJ 
affiliation checked.

The radio will attempt a data registration on channel change. If the radio does not receive 
a registration response after the programmed number of retries it will display “Reg 
Failed”. If the radio is out of range and then returns to within range of a site where it had 
not yet registered, it will initiate another registration.

P25 group calls are placed by selecting the channel programmed for the desired group, 
monitoring the channel if required, and transmitting.

The radio can be programmed so that the following are also displayed for 0.5 to 7.0 
seconds or continuously during the call.

On Rx Options:

PTT ID- The unit ID of the radio placing the call is displayed.

P25 Talkgroup - The alias of the talkgroup on which the call is being received is 
displayed.

User Group ID - If the group ID of the call being received is included in a pre 
programmed User Group ID list, the alias programmed in that list for that group is 
displayed.

Received Key ID- The Key ID (or the alias, if programmed) of the key used to decode 
the call is displayed.

On Tx Options:

P25 Talkgroup - The radio displays the number or alias of the talkgroup on which the 
call is being transmitted.