Operating Manual

March 2008 5100 ES Models II/III Portable Radio Operating Manual 5-19
Conventional Mode Features
5.14.5 P25 Unit Calls
Unit Calls (also called Individual Calls) can be placed to a specific radio on a Project 25
channel if the Unit Call option switch or menu parameter is programmed. Only the
individual ID of the target radio is sent (a talk group ID is not sent). The radios that can be
called are pre programmed in the Unit Call list.
To receive a Unit Call, the RF channel of the call must be selected or scanned and the
correct NAC and unit ID must be detected. The ID of the calling radio is then transmitted
back. To respond to the call, the radio must be programmed with the Unit ID option switch
or menu parameter, and have a Unit Call programmed for the ID of the calling radio.
Place and receive a Unit Call as follows:
1 To transmit a Unit Call, press the Unit Call option switch or select the Unit Call menu
parameter. The alias (tag) of the last Unit Call is displayed.
2 If required, press the Up/Down switch to display the desired alias/ID. The alias and ID
of the calls that have been programmed are alternately displayed.
3 Press and release the PTT switch. The display indicates the Unit Call ID. If no answer,
the system times out after 20 seconds.
4 When a Unit Call is received, two beeps sound (if tones are enabled), and “Call Rcvd”
and the alias of the unit ID are alternately flashed.
5 To respond, select the Unit Call mode by pressing the Unit Call option switch or
selecting the menu parameter.
If the call timer times out (set by programming) or the channel is changed before a
response is made, the unit call mode is exited.
5.14.6 P25 Conventional Telephone Calls
Telephone calls can be placed and received on P25 conventional channels. This feature
allows telephone calls to be placed and received over the public telephone system using
your radio. Telephone calls are programmed to operate in one of the following modes:
• Disabled
• Answer-only capability
• List only - Telephone numbers can be selected from a pre programmed list only (direct
entry using the keypad is not allowed)
• Unlimited - Telephone numbers can be selected from a list and also dialed directly
using the keypad.