It stands for Electronic Private Automatic Branch Exchange. They are used in communication systems.
What is epbx and ebx ? Why we are using epbx and ebx ?
Electronic private branch exchange
EPBX(Electronic private branch exchange) are Phone systems, which traditionally run on proprietary special purpose computers, can run on ordinary servers and workstations, allowing telephones to work just like any other computer application.
PBX is what interlink all the phone lines or extensions within a building or office and connect it to the PSTN. The system will automatically select available line for outgoing call. EPBX on the other hand does not have any difference with the PBX system. The term PBX has just evolve from the the term EPBX and is highly recognized globally.
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