he EPABX may be defined as a switching system that makes available both internal and external stitching functions of any organisation.The selection of an EPBAX is a difficult task and requires deep knowledge of traffic pattern of the office. By using an EPABX both the internal and external needs of the organisation are fully served. With the advent of powerful microprocessors and advancements in the field of computers, the EPBAX can boast of versatile features. Hotline can be established between the boss and his immediate subordinates. The feature of a call transferring and forwarding is another area enabling mobility of the users. Autoconferencing and automatic redialling of numbers found engaged on the first trial are some of other advancements in the features of the EPBAX. The selection of an EPBAX for an organisation should be preceded by a thorough study of the needs of the office. The exchange should be supporting features like voice DISA-n-auto attendant. This feature helps in doing away with a receptionist or an attendant. Further, the specifications should ensure inbuilt paging, auto fax homing, hot outward dialing, remote dialing, remote servicing and auto shut dynamic lock..