Performance Analysis of VoIP Quality of Service in IPv4 and IPv6 Environment

Abstract

In recent years, Voice over IP (VoIP) has gained a lot of popularity and become an industry favorite over Public Switching Telephone Networks (PSTN) with regards to voice communication. The performance of VOIP over Wi-Fi (VoWIFI) is sensitive to throughput, jitter and end to end delay .so, it is very important to analyze the performance of VoWIFI stander such as IEEE 802.11 a, n. This Research mainly aimed to study, analyze and simulate VoIP over WLAN, to explore the quality of service of VoIP over WLAN in term of (jitter, delay, and throughput). it has been concluded that WLAN 802.11a ipv4 Standards is considered the best choice for VoIP when our concern in throughput, ipv6 have better performance in delay than ipv4 and jitter. Also concluded that the ipv6 is better for real time applications when using 802.11 n more throughputs and the delay more stable, smaller jitter.