The Installation mode is mentioned in the new Hot Desking config guide: https://supportforums.adtran.com/docs/DOC-6072
If the phone is not showing up in the ipconfig list then Here are some questions:
1. Did you factory default this unit with the phone previously configured on it?
-If so, then you will need to create a user and assign the mac address of that phone to it. then delete that user and the phone config.
-Then reboot the phone and it should appear in the list.
Here is how the installation mode should work:
When you see the login, you can enter the user's extension and password and that phone now becomes the phone for that user.
From the GUI, go to IP Phone Configs and the phone will appear orange and say "Installation". You can double click on the phone and assign it a new extension or to an existing extension assigned to a user.
One way to do this for installs is to upload a CSV file with just first, last names and extensions columns, delete all other ones, then plug in all the phones, then just assign the phones to the users. This way you never have to enter a MAC address since they automatically appear in the IP Phone Config menu.
Let me know if you have any questions.
-Mark
