I have 2 Identical Cisco 7921 Wireless IP phones and I’m having trouble with one of them. I've got it to connect to the AP and pull its config from our call manager server and we are able to use it for a few hours, however, randomly, it seems it's lo...

I've got a 7920 ip phone that i'm trying to register with CUCM V. 8.0.3.20000-2.  I've got the profile created on the CUCM and the 7920 connected to the AP.  The 7920 cycles through Configuring IP network, Downloading Config File, Connecting to CallM...