Typically auto-attendants are not used for handling internal calls. However, it can be useful:
To test the operation of an auto-attendant whilst it is being configured.
As a number to which users can transfer external caller's who have been misdirected.
Short Codes for Auto-Attendant Access
An internally dialable number to access an auto-attendant can be created using the Auto Attendants short code feature. For example:
*99XX/Auto Attendant/"AA:"N - This short code will allows calls to any auto-attendant using the AA Number when dialing. For example, *9901 for the first auto-attendant.
*99/Auto Attendant/"AA:AutoAttend01" - This short code allows calls to a specific auto-attendant using the auto-attendant Name setting.