  VoIP transfer voice over networks such as LAN. This technology is growing
rapidly due to support of existing network infrastructure at low cost. Various
simulations have been done and it is observed that by increasing the VoIP
client, packet length and traffic arrival rate the performance of step network
affected. In the current work packet dropped, packet received, voice traffic
sent and end-to-end delay is estimated for various queuing disciplines like PQ,
FIFO and WFQ. It is depicted that queuing disciplines effects the applications
performance and utilization of resources.
