Grandstream Networks 29578 Manual Do Utilizador

1

The “AMPLIFY” button controls the increased volume level 

and tone equalizer  of the handset.
1. Press the volume 

(p 

or

 q)

 button to minimum, pick up 

the handset and press the amplify button to turn on the 

incoming voice amplifier . The indicator around the button 

illuminates. 

2. Adjust the volume by pressing the volume 

(p 

or

 q)

 button. 

When the amplify button is pressed , an extra level of 

amplified volume is added providing up to 40dB of gain 

and level control. In standard use, the amplifier turns off 

whenever you hang up the telephone. If you want the 

amplifier to turn on whenever you pick up the handset , 

slide the Amplify Override switch located at the back of 

the unit to ON. 
NOTE: AMPLIFY feature is possible in both