Go to your PBX interface: my.mixvoip.com
Enter your logins: username and password.
Access the Extension section. Add a new extension.
Number Enter the number you want to assign to the phone (except 112 (ambulance) and 113 (police)).
Mac Enter the Mac address that’s written on the back of the phone (begins with 0015xxxxxx).
Click on “…” and PUSH the configuration.
Go to the Configuration section and copy the provisioning link.
When you’ve copied the provisioning link, go to the phone Webinterface.
Access the Webinterface of your Phone by entering the IP address in your Browser.
Click on Advanced (1) then Update(2).
select Update automatically (3).
Setting URL Paste the provisioning link (4).
Apply and reboot.