TLS registration was experiencing issues at our ATL and DTW datacenters. All phones were failed over to PHX while DTW and ATL were restored for TLS. The restoration took place during the same morning and all TLS registrations have been brought back to DTW or ATL if those servers were set as primary.
UDP & phones set to other servers were unaffected. Fail over has been automated to include PHX moving forward as a tertiary location.