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You can only call emergency numbers, such as 'Operator' or 'Guard', once the phone is locked 
(max 3 numbers, configured by the administrator). 
Phone Lock 
Use up-down and 'ok' navigation keys to select: 
Phone Lock.
 
Switch 
or     
Enable the option: 
Lock Enable
. 
 
To end the settings. 
 
To lock/unlock your desk phone, you have to create a programmed key: 
Phone Lock
. 
o 
Label:
 enter the label of the key, displayed on the home page. 
 
3.15.1 Lock your phone 
 
Select the lock/unlock programmed key. 
Ok 
/   
Your phone is locked. A lock page is displayed. 
 
3.15.2 Unlock your phone 
 
Unlocking your phone. Your password is required to unlock the phone 
(the default PIN code is: 0000). 
 
3.15.3 Activate or deactivate the automatic keypad lock 
The phone is in idle state. 
Menu 
Press the Menu soft key to access the Main Menu. 
Basic Setting 
Use up-down and 'ok' navigation keys to select: 
Basic Setting. 
Phone Lock 
Use up-down and 'ok' navigation keys to select: 
Phone Lock.
 
Switch 
or    
Enable the option: 
Auto Lock Enable
. 
 
Enter the timeout without activity before the keylock (seconds). 
or 
Save 
Validate your choice. 
 
To end the settings.