I went out today and ran a wireshark capture on the phone and the CUAE server. While i don't see anything really on the phone side, there are some results from the CUAE server. The IP address of the phone is 172.19.52.79.
The models are mixed, 7970s being the majority of the phone, with about half working, and half failing. All devices are assocaited with the application user in cucm.
Fimeware is SCCP70.8-5-2S
Thanks
Tim