From my understanding when you create a phone service URL (for extension mobility) and subscribe this to the phone the phone should use this URL to reach out to the login service , for example if the login URL contains HTTPS 8443 it will use this port.
I have noticed that for Cisco Phones like 88xx this is the case but with DX80 it will try connect to extension mobility service via HTTPS 443, even when this is not defined on the login service, anyone know why this is the case ?
