I have a site that recently was converted from CM 3.x to 4.2.3. When we upgraded we also started making them dial a "9" for an outside line to make them standard with the rest of our offices. For some reason the users are calling 911 3-4 times a day. They are claiming they are dialing 91815-xxx-xxxx and the phone is dropping the "8", ignoring the rest of the digits and dialing 911. Has anyone ever had a symptom like this?
i would just suggest you to have more specific route pattern configured for 911 and for others like 9.!
Else it would be advisable to change the access code to 0 for other calls.