What is an IP PBX?

A PBX (Private Branch Exchange) is a small telephone switch owned by a company or organization. An IP PBX is simply a PBX which supports VoIP (Voice over IP). An IP PBX can also be referred to as a VoIP PBX.

An IP PBX may support VoIP both internally and externally. Internal VoIP support means that the IP PBX uses VoIP to communicate with each of its connect PBX phones. External VoIP supports means that the IP PBX uses VoIP to route calls to the outside world.

Most IP PBX's also support older analog or digital PBX phones and also support external connections on the public switched telephone network (PSTN).

Books on IP PBX's

PBX Systems for IP Telephony

The most efficient and economical ways to bring enterprise communication systems into the digital age are in this guide. PBX Systems for IP Telephony evaluates technologies, markets, and best practices for enterprise voice systems, messaging, and customer contact centers.

The heart and brains of an enterprise communications network, the PBX (Private Branch Exchange) can be the vital link that interfaces businesses and their customers. This guide, from the recognized expert in telephony systems, provides answers. Whether you need to IP-enable a PBX system for a small business, make complex choices for the advanced call center, or gain the expertise to integrate a variety of communication systems into a state-of-the-art foundation for your e-business vision, PBX Systems for IP Telephony should be your first choice.