EFJohnson Radio FM Portable Radio Intrinsically-Safe SMARTNET, SmartZone Conventional 用户手册

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If the called party answers but the radio system is busy, four low tones 
sound and “BUSY” and “WAIT” are alternately displayed. When the 
system is no longer busy, the called party automatically responds.

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If an out-of-range condition exists or the radio system is not in 
service, “LOST CALL” is displayed and a continuous tone sounds. 
End the call by pressing the CLR key.

Receiving an Enhanced Private Conversation Call

These calls are automatically received if a SMARTNET/SmartZone 

channel is selected. Proceed as follows:

1. When a call is received, a recurring unit call tone (three beeps) sounds 

for up to 20 seconds, and “CALL RCV” and the current channel alias 
are alternately displayed. 

2. To answer the call, press the Private Call option switch and then the 

PTT switch and begin talking. The private call mode is indicated by 
“C” in the upper part of the display. The alias of the incoming call is 
displayed if the ID is in your call list. Otherwise, the unit ID is 
displayed. NOTE: If the Private Call option switch is not pressed before 
the PTT switch, a group call is transmitted on the selected group.

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To end the call when the conversation is complete or at any other time, 
press the CLR key.

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If unit-to-unit (private) calls are not permitted (Private Call switch not 
programmed), press the Call Response option switch, if available, to 
answer the call. 

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If the call is not answered within 20 seconds, it is automatically 
terminated.

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If the radio system is busy, four low tones sound and “BUSY” and 
“WAIT” are alternately displayed. When the system is no longer busy,