Plantronics Blackwire C520 - Manual (Page 5)

Headset inline control icons Function
Answer/End button
Answers or ends a call
Incoming call
Flashes green
On a call
Solid green
Volume up button
Increases the listening volume
Volume down button
Decreases the listening volume
Mute/Unmute button
Mutes/unmutes the headset
microphone Solid red when muted
Smart Sensor ™ technology
Sensors detect whether or not you are wearing the headset. Sensors are located in the speaker
capsule on the microphone boom side.
Smart Sensor Feature Function
Auto Answer Calll
When you are not wearing your headset and have an
incoming call on your PC, put on the headset and the call
will be answered automatically. You do not have to press
the Answer/End button.
Incoming call
Flashes green
Basics
5