For information on how to set up an attendant console, see Administering Avaya Aura®Communication Manager.
Type display system-parameters customer-options. Press Enter.
On the Optional Features screen, ensure that the Async.Transfer Mode (ATM) PNC field is set to y.
If this field is set to n, go to the Avaya Support website at http://support.avaya.com for current documentation and knowledge articles related to administering Centralized Attendant Service, or to open a service request.