We have 2 Internet connections, and a dual wan router. We are in a fairly rural area and both connections are lousy. Between the two, you could argue I have one reliable connection. The dual wan router is configured to move the rules back and forth and our external dns is configured to fail over as well. I have some direct remote extensions that have been working when the link they are configured for is up. They connect via IP address as described in the remote-extensions blog entry on the site. I tried configuring a remote extension to connect to a valid host name. telecom.notmydomainname.com and watched it try to register. The 3cx security blacklisted the client. The hostname resolves correctly from the 3cx server and the public net. Is what I am trying to do legal/possible in SIP? Thanks in advance.