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Research Paper | Communication or Media Studies | Sudan | Volume 5 Issue 9, September 2016
Impact of Voice Coding in Performance of VoIP
Batoul Alia Baker Koko  | Dr. Mohammed Abaker 
Abstract: VoIP applications are being widely used in today's networks challenging their capabilities to provide a good quality of experience level to the users. In particular, new wireless broadband technologies, such as WiMAX, deployed and their performance needs to assess in order to check the performance levels of VoIP services. The QoS is the main issue of implementation VOIP over WiMAX networks. This paper makes an effort to study the performance evaluation of VoIP for fixed users, as well as, the variation of the QoS parameters. The experimental results had showed that using sector antenna for both BS and SS and reduce the distance between them, increase the average MOS and decrease the average packet end-to-end delay.
Keywords: Worldwide interoperable Microwave Access WiMAX, Voice over Internet Protocol VOIP, Physical PHY layer, and Optimized Network Engineering Tools OPNET, Quality of Service QoS
Edition: Volume 5 Issue 9, September 2016,
Pages: 1521 - 1526
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