B179 registration failure?

[kzr750r1]

I have been fighting a B179 for a couple of days on and off... The thing will not register.
UEXT TN is setup the same as other working units in this office. Aside from DN and Name.
XML used on another working device edited and loaded.
VLAN on the network ports are correct.
Firmware is one item that has been uploaded.
We even changed phones with the same data as above same garbage.

Oct 18 16:11:37: WAR: SIP registration failed, status=408 (Request Timeout)
Oct 18 16:11:37: INF: mmi: Account 'ROOM NAME' failed to register

What else could the issue be? Not a liscence issue...
Just some thoughts but not sure where to look next. We have over 120 of these phones workin in the USA alone on the same core system.

 

[kzr750r1]

Application restart on the node sig servers cleared the issue registering the phone. Would be nice to hit the specific application instead of all.
Is there a way to restart specific applications?