NEC 5224 User Manual

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34 
Headset Operation (with Feature Control Switch)  
IMPORTANT NOTE: Mitel Networks Headsets with Feature Control Switch must be installed 
in the dedicated headset jack on the back of the phone. Installation will disable your handset 
microphone. Disconnecting the headset at the jack or at the quick–disconnect plug restores 
handset operation. If handset operation is required for an extended period of time, you should 
press the Headset feature key to return the telephone to handset mode.  
To enable or disable Headset Operation:  
•  Press the Headset feature key.  
To answer a call:  
•  Press flashing Line Appearance key  
–or– 
Quickly press and release the headset's feature control switch.  
To mute the headset microphone:  
•  Press and hold the headset's feature control switch.  
To hang up:  
•  Press    ( CANCEL ). –or– Quickly press and release the headset's feature control 
switch.  
To disable Headset Operation:  
•  Press the Headset feature key.