Headphones Phone Controls and Indicators
Action Indicator Light Tone
Mute/unmute the
call (call in progress)
Press in the volume/
tracking/mute button.
None Low and high tone to
mute, then a single low
tone every minute. High
and low tone to unmute.
Adjust the call
volume (call in
progress)
Tap the volume/tracking/mute
button forward (+) or
backward (-).
None Brief low tone (2 low
tones when volume limit
is reached)
WARNING Do not use headphones at high volumes for an extended period of time. Doing so can
cause hearing loss. Always listen at moderate levels. See www.alteclansing.com/headphonesafety for
more information on headphones and hearing.