I've got 3 x 1020 AP's and a 2000 WLAN controller. The 2000 is controlling the AP's power and channel selection, and I can see they're 1, 6 and 11 respectively. All seems fine however for the odd long call(<15mins) the call hangs and the phone re-associates. I'm using WEP and MAC access list, I've gone through the config but cant see what could cause it. Any ideas most welcome!