Thesis (Ph. D.)--University of Texas at Austin, 2005. / Vita. Includes bibliographical references.

Thesis (M.S.)--Ohio University, March, 2003. / Title from PDF t.p. Includes bibliographical references (leaves 50-52)

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Supervisor: Scott M. Nettles. Vita. Includes bibliographical references.

Thesis (M.S.)--State University of New York at Binghamton, Watson School of Engineering and Applied Science (Computer Science), 2005. / Includes bibliographical references.

Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2007. / Includes bibliographical references (leaves 86-91). Also available in electronic version.

Thesis (Ph. D.)--University of Washington, 2006. / Vita. Includes bibliographical references (leaves 103-108).

Thesis (Ph. D.)--State University of New York at Binghamton, Department of Computer Science, 2007. / Includes bibliographical references (leaves 197-211).

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 83-89). Also available via the Internet.

D.Phil. (Computer Science) / Please refer to full text to view abstract

Over the past few years there has been an increasing tendency to carry voice on IP networks as opposed to the PSTN and other switched circuit networks. Initially this trend was favoured due to reduced costs but occurred at the expense of sacrificing the quality of the voice communications. Switched circuit networks have therefore remained the preferred carrier-grade voice communication network, but this is again changing. The advancement in improved quality of service (QoS) of real-time traffic on the IP network is a contributing factor to the anticipated future of the IP network supplying carrier-grade voice communications. Another contributing factor is the possibility of creating a new range of innovative, state-of-the-art telephony and communications services that acquire leverage through the intelligence and flexibility of the IP network. The latter has yet to be fully explored. Various protocols exist that facilitate the transport of voice and other media on IP networks. The most well known and widely supported of these is H.323. This work presents and discusses H.323 version 4 service creation. The work also categorises the various H.323 services and presents the mechanisms provided by H.323 version 4 that have facilitated the development of the three services I have developed, EmailReader, Telgo323 and CANS.