Panasonic KX-TCD505E Operating Instructions Manual page 54

Handset Settings
Reset the Handset Settings
You can reset all of the handset settings to their initial settings.
1
Press JOYSTICK
(or move).
4
Select "Reset
Handset".
54
2
Select "
Setting
Handset".
5
Enter 4-digit Handset
PIN.
(Factory Preset 0000)
3
Select "Other Option".
6
Select "Yes", then
"Deleted" is displayed.