E.F. Johnson Company 53SL ES Series, Руководство по эксплуатации

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53SL ES Series Mobile Radio Operating Manual April 2009 6-17
Project 25 Mode Features Section 6 - Conventional Mode Features
6.13.5 EFJohnson System Automatic Registration
When used in a 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 subscriber unit will transmit its current talkgroup and mobile computer IP address to
the system in addition to its unit ID during a dynamic data registration request.
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.
6.13.6 P25 Group Calls
P25 Group calls are placed by simply selecting the channel programmed for the desired
group, monitoring the channel if required, and transmitting. When a P25 group call is
received, the alias (or frequency) of the selected channel is displayed. The radio can be
programmed so that the following are also displayed for 0.5-7.0 seconds or continuously
during the call.
P25 PTT ID - The unit ID of the mobile 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
preprogrammed 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.
6.13.6.1 Changing Talkgroup Assigned To a Channel
If the TG SEL option switch is programmed, the talkgroup assigned to a channel can be
changed by the user. The operation can also be selected from the menu as Digital
Talkgroup Select. The new talkgroup continues to be assigned to the channel until it is
manually changed again (cycling power or selecting another channel does not reselect a
default talkgroup). Change the talkgroup assigned to a channel as follows:
1 Select the channel to be changed and then press the TG SEL option switch.
2 Rotate the Select switch to display the talkgroup to be assigned to that channel.
Talkgroups are indicated by a unique identification in the alphanumeric display.
3
To select that talkgroup and return to normal operation, press the TG SEL switch again
or press the Select switch. A single beep sounds when the Select switch is pressed (if