You can set the configuration server directly from the phone
Directly from the Phone
Press the More button.
Press the Menu button
Use the arrow buttons to select Reconfigure.
Select Yes to confirm
Choose the Configuration Server
Select Sangoma Configuration Server
Select OK to confirm
Click submit
If you are using HTTP for the mode you will need to set the Port Number that your PBX is setup to listen on for HTTP provisioning as shown in the Global Settings section of End Point Manager.
Example would be http://10.10.48.2:84 with 84 being the Port Number
Important: If you have enabled HTTP/HTTPS/FTP provisioning with authentication at System Admin (PRO), please refer to this wiki for the proper format of the URL string.