Quote Originally Posted by biomesh View Post
Have you verified that all of the TCP/IP settings are correct? If the DNS server isn't correct, then it won't be able to resolve the server names.
Good suggestion. The DHCP provided DNS is working for everything else on my network. And the phone was able to call home and uprade itself. To double check I replaced the URLs with IP addressed. Unfortunately it still shows registration failed.

Thanks for the suggestion.