Internet Fax Glossary: VoIP PBX

Voice-over-Internet-Protocol is a technology that delivers calls over the internet. Typically, a VoIP PBX is made up of a computer running PBX software that has the ability to route calls through an internal business network to IP telephones. This type of device is almost identical to the Software PBX discussed above, it just uses network wires and protocols to deliver the call. Again, it is "hosted" in that it hosts PBX software, but it is made up of equipment installed inside a businesses' office, and is not a hosted PBX service. In addition, it needs hardware to connect to the PSTN.