Plantronics Blackwire 435 - Manual (Page 9)

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5 For those users who do not want speakers in both ears (all the time or just occasionally),
you can disconnect the second speaker at the connection point shown below. This will
automatically change the headset from stereo to mono (and vice versa when reconnecting).
*
*The headset is supplied with a cover for the connector when configured as a mono headset
In-line controls
Call answer/end Can be used to answer or end a call directly from the headset with a single press.
LED will flash green when a call is coming in and be solid green when on a call.
Volume Volume up and down are available.
Mute A single press of the mute button will mute the microphone. A red LED will be on
when you are muted. Pressing this button again will take the microphone off mute.
NOTE For call control and other features, download Plantronics software at
http://www.plantronics.com/businesssoftware .
IMPORTANT For your safety, do not use headset at high volumes for extended periods
of time. Doing so can cause hearing loss. Always listen at moderate levels. For more
information on headsets and hearing visit:
plantronics.com/healthandsafety .