We have a WCS running Version 220.127.116.11 and 10 WLC connected to it. On one of our sites we have difficulty connecting to certain APs. When looking at the event logs on the WCS we see this message." Interference threshold reported by 802.11b/g interface of AP09 connected to controller ip 192.168.10.10". I have tried changing the channel but still have trouble connecting. Can someone point me in the right troubleshooting direction please.