Panasonic KX-TD816NZ User Manual

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2.9
Using the Display Proprietary Telephone
110
Operation
2.9.3
Denying Other People the Possibility of Seeing Your 
Call Log (Incoming Call Log Lock) [KX-T7433, KX-
T7436, KX-T7230, KX-T7235 only]
 To lock / unlock
If you forget the code, consult your operator. They can unlock the call log display of any 
extension (Incoming Call Log Lock Control).
Enter code (3 digits) twice or once.
desired code
stored code
same code
OR
Lock
Unlock
Off-hook.
Dial 57.
7
5
D    PT
C.Tone   
On-hook.