Motorola SL7550 用户手册

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页码 114
Making and Receiving Calls
English
28
7
You hear a short tone. The display shows Call Ended.
NOTE: If you release the PTT button while the radio is setting 
up the call, it exits without any indication and returns to 
the previous screen.
Your radio may be programmed to perform a radio 
presence check prior to setting up the Private Call. If 
the target radio is not available, you hear a short tone 
and see negative mini notice on the display.
Making an All Call
This feature allows you to transmit to all users on the channel. 
Your radio must be programmed to allow you to use this feature.
Procedure:
1
Select the channel with the active group alias or ID. See 
Selecting a Channel on page page 23.
2
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 Group Call icon appears in the top right 
corner. The first text line shows All Call. 
4
Wait for the Talk Permit Tone to finish (if enabled) and speak 
clearly into the microphone.
Users on the channel cannot respond to an All Call.
Making a Group, Private or All Call with the 
Programmable Number Key 
The Programmable Number Key feature allows you to make a 
Group, Private or All Call to a predefined alias or ID easily. This 
feature can be assigned to all the available number keys on a 
keypad.
You can ONLY have one channel independent alias or ID 
assigned to a number key, however you can have more than 
one number key associated to an alias or ID.
Procedure:
When you are on the Home screen:
1
Long press the programmed number key to make a Group, 
Private or All Call to the predefined alias or ID.
If the number key is not associated to an entry, a negative 
indicator tone sounds.
2
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 Group/Private Call icon 
appears in the top right corner. The first text line shows the 
caller alias. The second text line displays either the call 
status for a Private Call or All Call for All Call. 
4
Wait for the Talk Permit Tone to finish (if enabled) and speak 
clearly into the microphone.
NAG-LACR.book  Page 28  Wednesday, May 2, 2012  2:47 PM