Headset Operation
To enable Headset Operation:
zPress the Headset feature key.
To answer a call (when Auto Answer is disabled):
zPress the flashing line key.
To hang up:
zPress 
( CANCEL ).
To mute your headset microphone:
zPress the 
(MUTE) key. The light turns ON.
To turn mute off and return to the conversation:
z Press the 
(MUTE) key. The light turns OFF.
