The Full Form of EPBX is Electronic Private Automatic Branch Exchange.

EPABX (Electronic Private Automatic Branch Exchange) : A private branch exchange (PBX) is a telephone exchange that serves a particular business or office, as opposed to one that a common carrier or telephone company operates for many businesses or for the general public. PBXs are also referred to as PABX – private automatic branch exchange and EPABX.

The electronic private automatic branch exchange (EPABX) is equipment that has made day-to-day working in the offices much simpler, especially in  the area of communication. The 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.