Grandstream Networks 29578 사용자 설명서

1

The phone’s 3-band tone equalizer  boosts the sound of 

the three frequency ranges ( 600Hz, 1.2KHz, 2.4KHz ) to 

compensate for the ear’s limited sensitivity in these ranges.
1.  To turn on the equalizer, press the “amplify” button after 

you pick up the handset, or any time during the a call. The 

indicator around the button illuminates. 

2.  To adjust the setting open the equalizer cover. Slide each 

switch toward “+” to increase or amplify sounds, or toward 

“-” to decrease the sound within that specific range.

3.  To turn off the equalizer press the “amplify” button and 

the indicator light  turns off.

The unit is also equipped with the 3.5mm Neckloop jack for 

an optional Neckloop device (to be purchased separately).  

When Neckloop device is plugged in, audio signal to Handset 

earpiece will be transferred to the Neckloop device.  No 

output on Handset earpiece will be heard.