Traffic behaviour of VoIP in a simulated access network

Das Gupta, Jishu and Howard, Srecko and Howard, Angela (2006) Traffic behaviour of VoIP in a simulated access network. International Transactions on Engineering, Computing and Technology, 18. pp. 189-194. ISSN 1305-5313

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Abstract

[Abstract]: Insufficient Quality of Service (QoS) of Voice over Internet Protocol (VoIP) is a growing concern that has lead the need for research and study. In this paper we investigate the performance of VoIP and the impact of resource limitations on the performance of Access Networks. The impact of VoIP performance in Access Networks is particularly important in regions where Internet resources are limited and the cost of improving these resources is prohibitive. It is clear that perceived VoIP performance, as measured by mean opinion score [2] in experiments, where subjects are asked to rate communication quality, is determined by end-to-end delay on the communication path, delay variation, packet loss, echo, the coding algorithm in use and noise. These performance indicators can be measured and the affect in the Access Network can be estimated. This paper investigates the congestion in the Access Network to the overall performance of VoIP services with the presence of other substantial uses of internet and ways in which Access Networks can be designed to improve VoIP performance. Methods for analyzing the impact of the Access Network on VoIP performance will be surveyed and reviewed. This paper also considers some approaches for improving performance of VoIP by carrying out experiments using Network Simulator version 2 (NS2) software with a view to gaining a better understanding of the design of Access Networks.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Article no. 40010. Deposited with permission of publisher. The second and third authors are from USQ, Faculty of Business, Department of IS.
Depositing User: Mrs Angela Howard
Faculty / Department / School: Historic - Faculty of Sciences - Department of Maths and Computing
Date Deposited: 11 Oct 2007 00:55
Last Modified: 02 Jul 2013 22:41
Uncontrolled Keywords: codec, DiffServ, Droptail, RED, VOIP
Fields of Research (FOR2008): 10 Technology > 1005 Communications Technologies > 100503 Computer Communications Networks
10 Technology > 1005 Communications Technologies > 100502 Broadband and Modem Technology
10 Technology > 1005 Communications Technologies > 100599 Communications Technologies not elsewhere classified
URI: http://eprints.usq.edu.au/id/eprint/2022

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