Note:
You cannot use Attendant Vectoring with the Centralized Attendant Service (CAS) feature. Therefore, the Attendant Vectoring field cannot be set to y if either the CAS Branch field or the CAS Main field on the Optional Features screen is set to y.
Your license file sets the values in these fields. You cannot manually change these values. If you have any questions related to Communication Manager licensing, go to the Avaya Support website at http://support.avaya.com and download the related documentation and knowledge articles.