Date Added: Oct 2012
In a typical modern computer networks the presence of mixed traffic, and there is a steady increase in the share multimedia traffic. Each type of traffic has its own requirements for Quality of Service (QoS). With regard, to that the authors formulate the basic requirements for QoS for voice and video. It outlines the parameters of QoS for voice. Voice quality, three factors affect the quality of QoS: packet loss, delay and delay variation. Packet loss causes short-term gaps in conversation.