ATI Electronics H901A, User Manual

Volume control & Mute function 

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While you are in the callin g, you can adjust the volume by pressing vol+ and Vol- or you can 
adjust the volume on your mobile .

9

 Mute

While you are in the calling, Press and hold the Vol- for 2 seconds, you will 
hear a melody from low to high, then the headset's MIC will be muted, and you will hear 
remindful melody every 10 seconds. Repeat the operation your will hear the melody from 
high to low, the mute function is cancelled.

* While you are in the calling and another call was holding on, press MFB shortly can end current
   call and resume the holding on calling.
* While you are in the calling and another call was holding on, press and hold MFB for 2 seconds 
   can shift the current calling to the holding on calling.
* While you are in the calling and another call was holding on, press Volume Up button shortly can 
   add the holding on call to the current conversation to make a multiparty call.
* While you are in the calling and another call was holding on, or you are in a multiparty calling, 
   double press MFB can end the calling or remove yourself from the multiparty calling.