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VOLUME DOWN
VOLUME UP
To reject a call, hold down the TALK button for 1 second.
Note: Audio tones can be heard only when wearing the headset.
Operation
Adjusting the Volume
Use the VOLUME UP and VOLUME DOWN
buttons to adjust the volume. Each
adjustment is followed by a tone.
When the minimum or maximum level has
been reached, a different beep can be heard.
Note: The INVISIO
®
B3 saves volume settings when turned off.
Mute
To mute the headset microphone, press VOLUME UP + VOLUME
DOWN at the same time for three seconds. To un-mute, press both
buttons again for about 3 seconds. While muted, the headset beeps
twice every two seconds.
Note: Audio tones can be heard only when wearing the headset.