Recognizition And Traffic Analysis Of VOIP

With the development of the Internet, the VoIP technology is becoming more and more popular.The VoIP technology integrates data and voice as well as multimedia information and that reflects the marginalization on the basis of network convergence trends. It will not only provide the transmission of voice, but also provide the integrated service, such as text, video and other data to provide consumers with more diversified, simplicity, low cost service. The economic advantages of VOIP have attracted more and more customers and corporations from the circuit switch network to the packet switch network.With the implementation of the VOIP technology, the monitoring of VOIP traffic is becoming more and more important. By monitoring the VOIP traffic, the utility of network can be improved, and the "bad" behavior can be found and stopped. The network traffic monitoring system can monitor the VOIP traffic, and analyze the feature of the traffic. The system can protect the benefit of legal VOIP providers, and find out the "bad" behaviors.The paper is composed of five chapters.The first chapter is the preface, the current VOIP technology is introduced supplely. And the importance of VOIP traffic administrating and monitoring is presented.In the second chapter, the five mature network measurement technologies and two network measurement standard organizations in the industry were studied.