Performance Evaluation of G.711 VIOP Coder Using Wired and Wireless Communication Network

Wefag Salaheldin Abdelrazig, Dr. Haala El Dawo

Abstract: Voice over Internet Protocol (VoIP) has been an interesting topic of research in the last decade. The engrossing increase in the use of VoIP services is resulting in the enormous growth of broadband network. The main objective of this paper isto evaluate the performance of G.711 VIOPcoder for different networks. Wired, Wireless Local Area Network (WLAN), Worldwide Interoperability for Microwave Access (WiMAX) and Universal Mobile Telecommunication System (UMTS) networks were implemented in OPNET Modeler The quality is compared using different QoS parameters like end-to-end delay, MOS, throughput and jitter. The VoIP codecs used in the measurements of QoS are G.711. Simulations showed that G.711 isthe best schemes that provide high quality of voice in Wireless Local Area Network (WLAN) communicationsThe results analyzed and the performance evaluated will give network operators an opportunity to select the codec for better services of VoIP for customer satisfaction.

Keywords: VoIP, WLAN, WIMAX, UMTS, Codec, QoS