Motorola 4550 ユーザーズマニュアル

NOTE: Turning this feature on or off is limited to radios with 

this function enabled. Check with your dealer or system 
administrator for more information.

Procedure: 
Press the programmed VOX button to toggle the feature on or 
off.
OR
Follow the procedure below.

S

 to access the menu.

P

or

 

Q

 to Utilities and press 

N

 to select.

P

or

 

Q

 to Radio Settings and press 

N

 to select.

P

or

 

Q

 to VOX and press 

N

 to select.

The display shows VOX On. Press 

N

 to disable VOX. A 

tone sounds and the display shows VOX Off.
OR
The display shows VOX Off. Press 

N

 to enable VOX. A 

tone sounds and the display shows VOX On.

If the Talk Permit Tone feature is enabled (see Turning the Talk 
Permit Tone On or Off on page 61), use a trigger word to 
initiate the call. Wait for the Talk Permit Tone to finish before 
speaking clearly into the microphone.

You can enable and disable the radio’s internal public address 
(PA) system.

Procedure: 
Press the programmed PA On/Off button to toggle the feature 
on or off.

You can enable or disable the audio routing between the 
connected public address (PA) loudspeaker amplifier and the 
radio’s internal public address (PA) system.

Procedure: 
Press the programmed Ext PA On/Off button to toggle the 
feature on or off.

You can set the radio’s display backlight intensity to either Low, 
Medium, High, or Off, to light up the display and the Menu 
Navigation Buttons backlighting accordingly. The setting also 
affects the keypad backlighting on a keypad microphone.

NAG_6880309T15.book  Page 58  Tuesday, March 9, 2010  11:47 AM