An analysis of VoIP Internet Telephony performance based on Quality of Service (QoS) / Norfadzilah Abd Manap

This project examines the performance of VoIP Internet Telephony based on QoS
parameters through Direct and Indirect LAN. The performance is analyzed by using
Actema PVA-1000, NetQuality and AnalogX-NetStat Live. Actema PVA-1000 is an
analysis tool for Indirect LAN while NetQuality is used for analysis in Direct LAN.
Both tools will use the same QoS parameters which are packet loss, jitter and voice
quality. Then, AnalogX-Netstat Live is used for analysis to throughput and bandwidth
for Direct and Indirect LAN. To find out the reason VoIP is not inadequate for
integrated of voice and data transmission, this research project is conducted with the
main goal is to analyze the performance of VoIP Internet Telephony based on the
Quality of Service (QoS) parameters. Analysis to the performance of VoIP through the
QuaUty of Service (QoS) consists of two phases. The first phase is analyzing VoIP
performance on Direct and Indirect LAN. The second and the only phase is to make
comparison to the performance between the findings of the first phase. Outcomes of the
analysis had found that, both source and destination addresses either in Direct or Indirect
LAN faced degradation of voice quality in the network. But the quality is least affected
at the source address which is initiated the conversations rather than at the destination
address. Moreover, VoIP performance in Indirect LAN is suffered to degradation of
voice quality compare to Direct LAN.