Motorola XPR 5550 用户手册

To receive a call made to a group of users, your radio must be 
configured as part of that group.

Procedure:
When you receive a Group Call (while on the Home screen):

The green LED blinks. 

The Group Call icon appears in the top right corner. The first 
text line shows the caller alias. The second text line displays 
the group call alias. Your radio unmutes and the incoming 
call sounds through the radio's speaker.

 If the Channel Free Indication feature is enabled, you 

hear a short alert tone the moment the transmitting radio 
releases the PTT button, indicating the channel is free for 
you to respond.
Press the PTT button to respond to the call.
OR

 If the Voice Interrupt feature is enabled, press the PTT 

button to stop the current call from the transmitting radio and 
free the channel for you to talk/respond.

The green LED lights up. 

Wait for the Talk Permit Tone to finish (if enabled) and 
speak clearly into the microphone.
OR

 Wait for the PTT Sidetone to finish (if enabled) and 

speak clearly into the microphone.

Release the PTT button to listen.

If there is no voice activity for a predetermined period of 
time, the call ends.

See Making a Group Call on page 22 for details on making a 
Group Call.

A Private Call is a call from an individual radio to another 
individual radio.

Procedure:
When you receive a Private Call:

The green LED blinks.

The Private Call icon appears in the top right corner. The 
first text line shows the caller alias. Your radio unmutes and 
the incoming call sounds through the radio's speaker.

If the Channel Free Indication feature is enabled, you hear a 
short alert tone the moment the transmitting radio releases 
the PTT button, indicating the channel is free for you to 
respond.
Press the PTT button to respond to the call.
OR
If the Voice Interrupt feature is enabled, press the PTT