Comparative studies on the CODECS performance of best CODECS techniques for voice and video in Internet Protocol Version 4 (IPV4) and Internet Protocol Version 6 (IPV6)

Voice over Internet Protocol (VoIP) has become universal in recent days and become the first choice of small to medium companies for voice and video communication over IP network to cut down the cost and use the IT resources in much more efficient way. Another popular technology that ruled the world after the year 2000 is 802.11 wireless networks. The wireless medium has special requirements than the 802.3 (Ethernet) and special consideration take into account while implementing the video and voice over IP (VoIP) via wireless medium network. One of significant issues 802.11 and 802.3 is the bandwidth availability. Implement of VoIP over 802.11 must consider availability of bandwidth to retain the good voice quality. IPv6 is considered to be the next-generation Internet protocol. We will use wireless network platform to conduct and achieve the objective of this research. Therefore, this study is to analyze voice and video performance and measure Quality of Service (QoS) delivered by IPv6 using the best codecs approach compared to IPv4. It focuses more on quality of voice on voice and video codecs such as packet loss, delay time and jitter in IPv6 through soft phone. X-lite application is used for communication between source and destination party. In our experiment, there are four types of audio codecs have been tested such as G.711 a law, Speex, BroadVoice-32, iLBC and two video codecs such as H.263 and H.263+. Network Management System (NMS) is used to monitor and capture the performance of voice and video (VoIP) in IPv6 environment. Based on the finding result, it shows that all audio and voice codecs suffered higher delay and packet loss for IPv6 compared to IPv4. The significant result of jitter IPv6 is slightly lower than IPv4. Therefore, the quality of voice and video (VoIP) might be decreased if implemented in wireless IPv6 environment.