You can mute the microphone of the active audio device during an active call so that the other party cannot hear you. Call mute applies to all modes (Handset, Headset and Speakerphone).
To mute a call:
- Press during an active call.
- The touch screen indicates that the call is muted.
- The mute key LED illuminates solid red when the call is muted.
To un-mute a call:
- Press again to un-mute the call.