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Analysis of Voice Over IP Traffic

James Curtis

October 6, 1999

Abstract:

Voice over IP applications allow telephone conversations over a standard Internet connection. This is an exciting new use of the Internet for most users, and can result in large cost savings for long distance toll calls. This is resulting in a high growth rate in the use of these applications. Unfortunately due to the implementation of these applications, a large growth in voice traffic could seriously degrade the performance of other common Internet applications.

This report outlines the progress this project has made in investigating these effects. This has involved a large study of the ways of measuring network traffic. This study has encountered multiple difficulties and problems present in many of the systems in use today. This report explains these issues and introduces some of the techniques currently being used to correct these problems.

The project has focused on the use of one measurement system and this report goes on to detail the the analysis of data from this system. The reliable detection and filtering of the voice traffic present in these data sets is the most important area of this analysis. Finally this report outlines the initial analysis of the voice traffic found using these methods.




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James Curtis 2000-01-17