E F Johnson Company 2425795 사용자 설명서

6-4 

Viking™ VP600 Portable Radio Operating Manual

To recall from a list:

1 Momentarily press the Unit Call option button or select that menu parameter and the 

alias of the last called radio is displayed. The unit call mode is indicated by 

 in the 

display.

2 If required, select another radio by pressing the Up/Down buttons until the alias of the 

desired radio is displayed.

3 Press the PTT switch to initiate the call.

(Proceed to the bulleted list which follows Item 3 in the next section for events that may 
occur next.)

To make a direct entry using the DTMF keypad:

1 Press and hold the Unit Call option button until a tone sounds. The last ID called is 

displayed, and the unit call mode is indicated by 

 in the display.

2 Using the 0-9 keys, dial the ID of the radio you are calling (eight digits for Unit calls). 

To erase the last digit, press the Left button, and to cancel the call, press the 

 (Clear) 

button.

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 then may occur are as follows:

- If the radio being called is on the air, “Wait” is displayed and ringing is heard until 

the called party answers or until the system terminates the call, whichever occurs 
first. When the call is answered, the voice of the called party is heard.

- If the called radio does not answer, a continuous tone sounds and “No Answer” is 

displayed.

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

tone and “Deny” is displayed.

- If the busy tone sounds and “Busy” is displayed, the called radio 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, “Resp Only” is displayed and an alert tone 
sounds.

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

call must be made in the clear mode by pressing the Clear/Secure option button. 
Otherwise, load the correct key.