We are running CCME 4.0 on IOS 12.4(9)T at several locations. This are retail environments. The stores are getting CCME when they open in preparation for rolling out full CallManager across the enterprise later this year. I am having a lot of problems with users accidentally CFA to non existent extensions, then inbound calls stop working. Is there a way to disable CFA on the CCME system or on the phones themselves?