D-Link DPH-400S - Advanced Phone Settings; Account Configuration; Network Configuration; Security Settings

7 Advanced settings
7.1 Account
Press Menu->Enter->Advanced settings, and then input the password to enter the
interface, the default password is 123. You can set it through the web page. Then
choose Account then press Enter, you can do some SIP settings.
7.2 Network
Press Menu->Enter->Advanced settings, and then input the password to enter the
interface. Then choose Network and press Enter, you can do network settings,
you can refer to 2.2.1 Network settings.
7.3 Security
Press Menu->Enter->Advanced settings, and then input the password to enter the
interface. Then choose Security, you can configure Menu Password, Keylock
Password, Keylock Status.
7.4 Maintenance
Press Menu->Enter->Advanced settings, and then input the password to enter the
interface. Then choose Maintenance and press Enter, you can configure Auto
Provision, TR069, Backup, and Upgrade.
7.5 Factory Reset
Press Menu->Enter->Advanced settings, and then input the password to enter the
interface. Then choose Factory Reset and press Enter, you can choose Yes or No.