E F Johnson Company 2425795 Benutzerhandbuch

Viking™ VP600 Portable Radio Operating Manual

6-5

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

button or the 

 (Clear) button.

To recall from a list:

1 Momentarily press the Unit Call option button or select that menu parameter. The alias 

of the last called radio is displayed, and 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 DTMF keypad:

1 Press and hold the Unit Call option button until a tone sounds (approximately one 

second). 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:

- The called party answers the call.

- The called party does not answer. Press the 

 (Clear) button to end the call.

- If the selected radio ID is not valid, “Invalid ID” is displayed and an alert tone 

sounds.

- If the radio system is busy, four low tones sound and “Busy” is displayed. When the 

system is no longer busy, the call back tone (four beeps) is heard and the channel is 
automatically acquired. Press the PTT switch to continue the call.

- If the call is in the secure mode and the 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 or selecting that menu parameter. Otherwise, load the 
correct key.