CS540 Headset Controls

1 - Volume/Mute Button

To increase the volume, press the volume button up (down if wearing headset on your left ear).
To decrease the volume press the volume button down (up if wearing headset on your left ear).
To mute/unmute the headset, push in the volume/mute button. When you press the mute button, you will immediately hear 3 beeps in the headset to indicate mute on and off.

2 - Call Button

To place, answer, or end a call, briefly press the call button.

3 - Headset Indicator Light

Flashes white when in use
Solid white when in subscription mode

Note: For your safety, do not use the headset at high volumes for extended periods of time. Doing so can cause hearing loss. Always listen at moderate levels.