Motorola BOOM Manual Del Usuario página 13

To...
mute or
unmute a
call
end a call
change call
volume
answer a
second
incoming
call
EN
Press and hold the Volume Up
and Volume Down buttons
until you hear "mute on" or
"mute off" .
Note: If your device doesn't
support voice prompts, you'll
hear a tone.
Press the Call button.
Press the Volume Up or
Volume Down button. To
quickly change volume, press
and hold the Volume Up or
Volume Down button.
Press the Call button.
Basics 11