Ok here is a real head scratcher.
Phone system 1 (FQDN: 1) Phones went down during a power failure. Came back up and STUN connected to FQDN: 1 <Here's the weird pard> FQDN1.3CX.US leads to a completely different phone system FQDN 2
When on FQDN 2 I found that the other phones were being black...