On a 5224 IP Phone only, you can set, change, or clear a password (up to 7 digits, not including 0):
1.Press 
( SUPERKEY ).
2.Press the No softkey until "Set Password?" appears.
3.Press the Yes softkey.
4.Do one of the following:
To enter a new password, enter your password.
To change or clear your password, enter your current password.
5.Press the Enter softkey.
6.changing or clearing your password, do one of the following:
To change your password, enter your new password and press the Enter softkey.
To clear your password, enter 0.
7.Enter your new password again.
8.If you are setting up or changing a password, press the Enter softkey.
9.Press 
( SUPERKEY ).
Messaging - Cancel Callback
To cancel a Callback:
1.Lift the handset.
2.Dial *1#.
3.Dial the number of the called station.
4.Hang up.
Messaging - Cancel All Callbacks
To cancel all Callbacks:
1.Lift the handset.
2.Dial #1.
3.Hang up.
