Multimedia iPBX: Moving Beyond Voice Services
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Overview: Private branch exchange (PBX) systems have traditionally connected private enterprises to the public switched telephone network (PSTN) using circuit-switched communications. iPBX (or IP-PBX) systems, which use the Internet Protocol (IP) to carry calls over packet-switched networks, have become increasingly popular in recent years. Indeed, iPBXs account for a significant majority of current annual PBX installations, and are projected to further dominate the market in the coming years.
While the move toward iPBX systems represents a clear trend, the ongoing integration of IP within PBX architecture can be viewed as more of an evolution than a revolution. Only recently have enterprises begun to deploy advanced multimedia iPBX systems, empowering a wide array of multimedia services and applications that take full advantage of iPBX capabilities. This paper examines the various stages of PBX architecture development on the road to multimedia iPBX, selected service scenarios enabled by multimedia iPBX, and multimedia iPBX extensions that power implementation of next-generation systems.