Wireless Networks - Special issue on performance evaluation methods for wireless networks
Voice over IP performance monitoring
ACM SIGCOMM Computer Communication Review
An integrated framework for enabling effective data collection and statistical analysis with ns-2
WNS2 '06 Proceeding from the 2006 workshop on ns-2: the IP network simulator
User-level performance evaluation of VoIP using ns-2
Proceedings of the 2nd international conference on Performance evaluation methodologies and tools
Playout buffering of speech packets based on a quality maximization approach
IEEE Transactions on Multimedia
On-the-fly VoIP call quality evaluation with improved E-model
Proceedings of the 8th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
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In the last ten years, many circuit-switched networks for voice have been replaced with packet-switched ones. Hence, simulating Voice over IP has become of paramount importance in assessing the performance of a network. However, a sound performance analysis should be carried out in conditions which are as close as possible to a real deployment. In this paper we present enhancements to ns2voip [1], a module for simulating realistic VoIP traffic with the ns2 simulator. In detail, we add new features, i.e. a correlated model for packet generation in a two-way conversation and implementing a set of realistic playout buffers to simulate the behavior of the receiver. Our code is available at http://cng1.iet.unipi.it/wiki/index.php/Ns2voip.