I am already running the router on channel 10 because of what the neighbors are running. But, I tried a test on her phone yesterday. I set the phone to get a DHCP address from the router. Then, I called my phone (which is also running on UMA with DHCP) and connected them. Then I sat them down and left them connected while I timed how long they would stay connected. The 8220 would disconnect at around 3 minutes. Then, I set a static IP on the 8220 and did the same test again. It never disconnected in this configuration. So, I left the static IP on the phone and it seems to be working fine under UMA.