SupraPlus (CS351/CS361): How to Mute
SupraPlus (CS351/CS361) Wireless Headset Mute Switch
To Mute and Unmute: Tap the mute button to mute. You will hear 3 rapid beeps every 30 seconds in the headset while the call is muted. Simply tap the mute button again to unmute. Mute Button Location: The mute button is located beneath the call answer/call end button, on the outside of the headset (see above).