We have a CM4.1.3 and 2811 voice gateway. We use a third party auto attandant, but we had the problem with CM auto attandant too.
Sometimes we try to call outside and we get busy tones. Then i use the command "sh call active voice brief" and see some FXO ports are open and one of the call leg ip address is auto attandant machine's. So call is up for 3 hours between fxo and auto attandant. The problem is also seen with CM auto attandant. How can i solve this issue.