Siemens optiPoint 410 User Manual page 89

Step by Step
>
4=Memory?
>
02=Delivery status?
>
Clear?
Resetting Memory to Factory Default Settings
You can use this option to reset the phone settings to
the factory default values.
This menu option only resets user-configurable
data. Settings made by the administrator are not
changed.
Open the "Local Functions" menu
:
Select and confirm.
>
:
Select and confirm.
>
:
Select and confirm. All user data has been reset to the
>
factory default settings.
Customizing the Telephone
page 86.
89