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Abstract

Towson University College of Graduate Studies and Research. Doctoral Dissertation Defense Announcement. Abstract In this thesis we evaluate VoIP performance over IPv6 by conducting experiments in a LAN environment in the

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Abstract

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  1. Towson University College of Graduate Studies and Research Doctoral Dissertation Defense Announcement Abstract In this thesis we evaluate VoIP performance over IPv6 by conducting experiments in a LAN environment in the presence of various types of background traffic, and comparing the results with IPv4. We also study the impact of IPsec, 6to4, and Teredo transition mechanisms on the quality of voice. To evaluate performance we determine maximum and mean delta (the time between voice packet arrivals), maximum and mean jitter, packet loss, throughput, and the MOS (Mean Opinion Score). When applicable, we conducted our experiments using Windows, Linux, and bare PC (OS-less) softphones, with the same audio codec (G.711 PCMU). In general, our results show that while the difference between VoIP performance over IPv6 and IPv4 is negligible, IPsec and transitional mechanisms can add overhead that may impact voice quality. The results of this work will be useful for network administrators and ISPs who are planning a transition to IPv6. Student’s Name: Title of Dissertation: Date of Defense: Time of Defense: Location: Roman Yasinovskyy VoIP Performance over IPv6Thursday, July 23rd, 2009 11:00 A.M. 7800 YR, 4th Floor Conference Room

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