Study the Best Approach Implementation and Codec Selection for VoIP Over Virtual Private Network

Mohd Ismail
Department of MIIT, University of Kuala Lumpur, Malaysia

 

Abstract: In this research, we propose an architectural solution to implement VoIP over Virtual Private Network (VPN) technology in campus environment between branches. The objective of this evaluation is to measure the quality of the VoIP performance over VPN technology. This study is to analyze the VPN over open source application (e.g Windows and Linux operating system), and hardware device (e.g Juniper) performance areas evolved with the quality of service delivered by VoIP conversation between branches. This study focuses on quality of voice prediction such as i) the performance of VoIP activity and ii) delay and packet loss. The most apparent of implementing VoIP over VPN in campus environment is to define the best solution between open source application (e.g Windows and Linux operating system) and hardware device that can be used in operational environment.  Based on the finding result, VoIP over VPN measurement through hardware device is able to contribute better performance compare to open source application such as CPU utilization, MOS, delay and jitter.

Keywords: MOS, operating system, VoIP, VPN, system performance.

 

Received December 4, 2010, accepted May 24, 2011

  

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