What is Internet Protocol Private Branch Exchange (IP PBX)?

Internet Protocol Private Branch Exchange (IP PBX) is a Private Branch Exchange (PBX) service provided over the LAN or WAN networks.

 How Internet Protocol Private Branch Exchange (IP PBX) does works?

Private Branch Exchange (PBX) is a service used to transmit calls over the circuit switched networks.

Internet Protocol Private Branch Exchange (IP PBX) is that type of Private Branch Exchange (PBX) that allows voice calls, video calls and other related services to get transmitted over the Internet protocols.

Internet Protocol Private Branch Exchange (IP PBX) allows calls transmission over both VoIP (Voice over internet protocol) and PSTN (public switched telephone network) systems.

How and where Internet Protocol Private Branch Exchange (IP PBX) is used?

Internet Protocol Private Branch Exchange (IP PBX) is used to transmit calls between the users of VoIP (Voice over internet protocol) and other users of local lines as well as it also allows the switching of calls between the local lines users and users of external lines PSTN (public switched telephone network).