9
Headphones Phone Controls and Indicators
Action Indicator Light Tone
Low battery indicator None 3 red flashes every
10 seconds
3 high tones every
10 seconds
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.plantronics.com/healthandsafety for
more information on headphones and hearing.
Redial Double tap on control button None Double low tone
Voice dialing (trying to
initiate call)
2 second press on call
control button
None Single low tone
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