
Would appreciate any guidance on what we can look for or if someone can interpret what the specific issue is? Perhaps one that is more lenient in more current firmware on the VVX line. Here is what I believe are the relevenat sip debug lines and i wonder if it's some sort of TLS issue.

We have verified NTP and tried a number of ideas based on other similar threads including factory resets and attempting to login with the *. version of the credentials without luck. We are attempting to use the same account on the Trio 8800 that sucessfully logs into the VVX 501. To rule out a local firewall, we also connected the device via WIFI to an ATT iphone hotspot with the same symtoms. We initially had trouble with our VVX 500 and 600's with similar symtoms, but this was resolved after upgrading to 5.2 on the VVX 501.

Symtoms are the Sign In screen sits forever without signing in. We are having trouble getting our new Trio 8800 to sign in to Skype for Business Online.
