In telephony, an automated attendant (also auto attendant or auto-attendant, or sometimes autoattendant or AA) system allows callers to be automatically transferred to a user’s extension without the intervention of a receptionist. A receptionist, who acts as the telephone operator, can be reached by pressing 0 on most systems. Although an automated attendant is usually a feature on modern PBX and key phone systems, it is possible to provide one on
standard lines and phones .Which best describes the auto-attendant in a Cisco Unified Communications environment?