Internet Protocol (IP) Telephony, or voice-over IP (VoIP), has proved to be a wise decision for many organizations. This technology crosses the boundaries of public and private networks, enterprise and residential markets, voice and data technologies, as well as local and long-distance services. The convergence of voice and data into a single, powerful network enables an organization to reduce costs, consolidate and simplify networks, as well as better serve its customers and constituents. IP telephony technology is also improving the way higher education and research organizations use networking resources to communicate, conduct research, teach students, and provide mobile collaborative multimedia technologies on and off campus. Leading institutions are currently building state-of-the-art communications infrastructures to attract top-notch students and faculty, as well as to develop the next-generation Internet. These deployments make it possible for institutions to deliver new communications services at a lower cost, while improving network security, reliability and mobility.