What It Is?


Private Automatic Branch Exchange (PABX) has been a backbone of inter and intra-organisation voice communication for decades. This is a managed private network within an organisation that consists of many lines and stations. PABX uses a range of different platforms such as Voice over Internet Protocol (VoIP), Integrated Services Digital Network (ISDN) and more for communication. In a PABX System or PABX phone system, Public Switched Telephone Network (PSTN)is used for facilitating connections provided by the service provider

How It Works?

PABX constitutes of a few integral components i.e. a housing for internal parts, a switchboard console for operators, computer for processing data, lines for connecting PABX to PSTN, necessary system hardware, endpoints (phone, fax machine, and other terminals), etc.
Talking about how PABX functions, modern systems use VoIP for sending and receiving digital signals. Once the analogue signal is converted into a digital one, the system can manage it the way it wants, similar to any other information that is digital in nature. Some other advanced features that PABX offers include voicemail to email, auto-attendant, conferencing, hold music and/r message, caller ID, call forwarding, speed dial, redial, etc.

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