A Performance Analysis Of Voip Traffic Over Wireless Lan / Wan

2086 Words9 Pages
A Performance Analysis OF VoIP Traffic Over
Wireless Lan And Wan Using Different Codecs

Tasnim Abdalla Abbas Mohamed * Dr.Amin Babiker A/ Nabi Mustafa

Department Of Communication Engineering .Al-Neelain University


A simulation model is presented to analyze and evaluate the performance of VoIP based integrated wireless LAN/WAN with taking into account various voice encoding schemes. The network model was simulated using OPNET Modeler software. Different parameters that indicate the QoS like MOS, jitter, end to end delay, traffic send and traffic received are calculated and analyzed in Wireless LAN/WAN scenarios. Depending on this evaluation, Selection codecs G.729A consider the best choice for VoIP.


VoIP, Codecs, QoS


During the recent years, there is a growing trend in real-time voice communication using Internet protocol (IP). Voice over Internet Protocol (VoIP) is a technology that allows delivery of voice communications over the Internet or other packet switched networks rather than the traditional Public Switched Telephone Network (PSTN). Many VoIP applications are available on the internet: Skype, Viber, Tango, and Yahoo messenger. All of these applications provide good quality and free calls. In VoIP, the analog voice signal from the transmitter is converted into the digital format before compression and encoding it into a stream of IP packets for transmission to the receiver over IP network. At the receiving end,
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