QoS Measurement for Real-Time Voice Traffic Over IPv4 and IPv6

Abstract

Real time applications over IP network became widely used in different fields; video conference, online educational lectures, online call, online games and IP-TV. The purpose of this study is to examine and analyze the impact of IP networks parameters; delay, jitter, and packet loss on the performance of real-time traffic “VOIP” sent across different IP networks; IPv6, IPv4 and compare the behavior of real-time traffic packets over IP networks. Experiments has been carried out in real operating networks environment: Prototype test network, Ideal operating network environment “controlled”, real operating network environment (University of Sudan- Dual-Stack) and real operating network environment (Khartoum University- Dual-Stack). Using Phonerlite application to generate real time traffic data between client’s hosts over IP (IPv4/IPv6) network. Examining delay, jitter, and packet loss for different packet sizes by using wireshark application and how these parameters can affect quality of real time traffice. contrary expectations; results showed that the IPv4 network had a lower Delay and lower Jitter than IPv6 network. That is probably because IPv4 has a lower overhead than IPv6 therefore take less bandwidth to send the payload. IPv4 network had higher packet loss than IPv6 network; due to optimization of fragmentation. Results obtained from this research may incourage researchers in the field to find solutions to problems of real-time traffic issues related to migration to IPv6.