Electronic Private Automatic Branch Exchange || EPABX

Electronic Private Automatic Branch Exchange

by Deepak Kumar 15-Oct-18

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EPABX stands for electronic private Automatic Branch Exchange. The Switching equipment used for telephone exchange connectivity through single line extension for simplifying office communication. This system comes under the category of telephone systems suitable for a business environment

This system needs a keen knowledge about the infrastructure and specific requirements of an organization before installation. Both internal and external switching requirements of organization can be easily served with EPABX.

Nowadays the EPBAX system comes with advanced features with the advancement of technology and a powerful microprocessor. With a single telephonic connection, multi-line connections can be easily available.


All the incoming calls are received on one central point and From that central point, all calls are routed towards other extensions of an organization.

Components of EPABX

a) Microcontrollers and microprocessor

b) Logic cards, switching cards to facilities entire operations

c) Telephones sets 

d) Switchboard for managing incoming calls 

e) Housing materials including UPS, connecting wires

f) Telco trunks

Features of EPABX

EPABX performs an extensive range of tasks some of them are given below:

a) Automatic Call Distributor

b) Call forwarding on busy or in absence

c) Automatic call ring back

d) Call pick-up, waiting, transfer, park, and pick-up

e) Follow me

f) Music on hold

g) Voicemail

h) Do Not Disturb

i) Customized Abbreviated Dialing

j) Automated Directory services

k) Auto Attendant

Advantages of EPABX for the company

a) Take up very less space.

b) The basic network of the phone system can be expandable through EPABX

c) EPABX simples the complexity of integrated communication as it is programmable

d) Permit resource sharing that will reduce phone expenses


a) Require more electric power

b) Increase long distance expenses

c) Low mobile workforce

Real time applications

a) BPO Sectors

b) Technical support center

c) Company's customer center

d) The information center in railways

e) Inquiry and resource centers


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