296
Asian Journal of Engineering, Sciences and Technology - Volume 7, Issue 1 2017
By Sumera Saleem, Mansoor Ahmed Tahir
Keywords: VOIP; QoS; Codec (G.711); queuing mechanisms (FIFO, WFQ, CBWFQ, and LLQ); MPLS network
In this paper, an implementation of different Queuing mechanisms over MPLS network for QoS of VOIP. Voice over Internet Protocol is a technology for delivery of telephone calls and other voice communication over the internet, involving the conversion of analog voice signals to digital form. To improve QoS of VOIP; different queuing mechanisms (FIFO, WFQ, CBWFQ, and LLQ) are used over MPLS network. Lan Traffic V2 (software testing tool) used to generate traffic over an MPLS network. The results gathered from the analysis on Wireshark shows that queuing mechanisms (FIFO, WFQ, CBWFQ, and LLQ) have a significant impact on QoS of VOIP and the impact varies according to the parameters (delay and packet loss). CBWFQ and LLQ queuing mechanisms are most appropriate to improve QoS of VOIP.