Commenced in January 2007
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Paper Count: 30184
Traffic Behaviour of VoIP in a Simulated Access Network

Authors: Jishu Das Gupta, Srecko Howard, Angela Howard

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.

Keywords: Codec, DiffServ, Droptail, RED, VOIP

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1331015

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References:


[1] General Information on the Internet System Survey, ITU-T Publication, Jan 2000.
[2] Goode, B Sep 2002, 'Voice Over Internet Protocol', paper presented to Proceeding of The IEEE, IEEE, Sep 2002.
[3] Cisco System 2001, Quality of Service for Voice Over IP, pp 3-18, .
[4] Moreno, C, Antolin, A, & Diaz, F Jun 2001, Recognizing Voice Over IP: A Robust Front-End for Speech Recognition on the World Wide Web, IEEE Transactions On Multimedia.
[5] ITU-T Proceeding, 2003, ITU-T Publication, .
[6] One way Transmission time, 1996, ITU-T Recommendation G114, .
[7] Stability and Echo CCITT Recommendation G.131 1988, ITU-T, .