E F Johnson Company 2425M80 Benutzerhandbuch

Draft 02 - Sep 1 2015

6-5

microphone, enter the number using the DTMF keypad. To cancel the call, press the 
Unit Call Option key again. 

If the Unit Call option is programmed to either the F2 or F3 buttons on the Standard 
Control Head, you must use the F6 button to exit the function. 

3 Press the PTT switch to initiate the call. If the entered number is valid, the display 

indicates the alias of the ID if it matches an ID in the call list. Otherwise, the ID you 
entered continues to be displayed.

Events that may then occur are as follows: 

- If the mobile being called is on the air, “WAIT” is displayed and ringing is heard 

until the called party answers or for 20 seconds, whichever occurs first. Pressing the 
PTT or an option switch stops the ringing but not the call. When the call is answered, 
the voice of the called party is heard.

- If the called mobile does not answer within 20 seconds, a continuous tone sounds and 

“NO ANSWER” is displayed.

- If the called mobile is not on the air, a continuous tone sounds instead of the ringing 

tone and “NO ACK” (Standard Control Head) or “No Acknowledge” (Lightning 
Control Head) is displayed.

- If the busy tone sounds and “BUSY” is displayed, the called mobile has answered the 

call but the system is busy. When the system is no longer busy, the call back tone 
sounds.

- If your radio or the called radio is inhibited or not programmed to make this type of 

call or for the requested secure mode, “RSPNS ONLY” (Standard Control Head) or 
“Response Only” (Lightning Control Head) is displayed and an alert tone sounds.

- If your radio does not have the proper encryption key, “KEYFAIL” is displayed and 

the call must be made in the clear mode by pressing the Clear/Secure option switch 
(if encryption is selectable on the channel). Otherwise, the correct key must be 
loaded.

4 When the call is finished or is not answered, end it by pressing the Unit Call option 

switch and placing the microphone back on-hook, or by pressing the appropriate exit 
button.

To recall from a list:

1 Momentarily press the Unit Call option switch, soft button, or select the menu 

parameter. The alias of the last called radio is displayed.

2 To select another mobile, rotate the Select switch until the alias for the desired mobile 

is displayed.