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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. iPBXs account for a significant majority of current annual PBX installations. IP based private branch exchange is projected to further dominate the videoconferencing, video mail, IVR, and mobile markets 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.

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Format:PDFSize:1,096 KB
Date:Apr 2008
Pages:12

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