E F Johnson Company 2425M80 사용자 설명서

Draft 02 - Sep 1 2015

6-11

2 If using the front panel controls, enter the ID of the radio you are calling by rotating the 

select switch, pressing F3 (Standard Control Head) or right on the Navigation pad 
(Lightning Control Head) to advance the cursor. The F2 button (Standard Control 
Head) or left on the Navigation Pad (Lightning Control Head) can be used to move the 
cursor back to correct an entered number. With the Digital Keypad 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.