Motorola SL7550 用户手册

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页码 114
Making and R
eceiving Calls
English
27
the PTT button, indicating the channel is free for you to 
respond. Press the PTT button to respond.
OR
If there is no voice activity for a predetermined period of 
time, the call ends.
7
Radio returns to the screen you were on prior to initiating the 
call.
Making a Private Call
While you can receive and/or respond to a Private Call    
initiated by an authorized individual radio, your radio 
must be programmed for you to initiate a Private Call.
There are two types of Private Calls. The first type, where a 
radio presence check is performed prior to setting up the call, 
while the other sets up the call immediately. 
Only one of these call types can be programmed to your 
radio by your dealer.
You hear a negative indicator tone, when you make a Private 
Call via the Contacts list, Call Log, One Touch Access button, 
the programmed number keys, if this feature is not enabled.
Use the Text Message or Call Alert features to contact an 
individual radio. See Text Message Features on page 57 or 
Call Alert Operation on page 50 for more information.
Procedure:
1
Select the channel with the active individual alias or ID. See 
Selecting a Channel on page 23.
OR
Press the programmed One Touch Access button.
2
To respond, hold the radio vertically 1 to 2 inches 
(2.5 to 5.0 cm) from your mouth.
3
Press the PTT button to make the call. The LED lights up 
solid green, the radio unmutes and the response sounds 
through the radio’s speaker. The Private Call icon appears 
on the top right corner. The first text line shows the 
subscriber alias. The second text line displays the call 
status. 
4
Wait for the Talk Permit Tone to finish (if enabled) and speak 
clearly into the microphone. 
5
Release the PTT button to listen. When the target radio 
responds, the LED blinks green, the radio unmutes and the 
response sounds through the radio's speaker.
6
If the Channel Free Indication feature is enabled, you will 
hear a short alert tone the moment the target radio releases 
the PTT button, indicating the channel is free for you to 
respond. Press the PTT button to respond.
OR
If there is no voice activity for a predetermined period of 
time, the call ends.
NAG-LACR.book  Page 27  Wednesday, May 2, 2012  2:47 PM