Using a BCM450, rel. 6.0, redundant chassis model. Auto-attendant in service for 3 years 1 month. Incoming calls are routed using menus with DN dialing enabled, auto-attendant touchtone gate is disabled. For the past 3 months or so some incoming calls have been getting an invalid extension error. Testing over a period of about a week has shown that this error occurs on any channel on the T1 about 25% of the time. When you get the error the menu is replayed and no matter how many times you re-enter the extension you still get the invalid extension error. Hanging up and retrying works sometimes but not always.
Can anyone help with this?
Can anyone help with this?