Date Added: Jan 2009
Skype is beyond any doubt the VoIP application in the current Internet application spectrum. Its amazing success has drawn the attention of telecom operators and the research community, both interested in knowing its internal mechanisms, characterizing its traffic, understanding its users' behavior. This paper investigates the characteristics of traffic streams generated by voice and video communications, and the signaling traffic generated by Skype. The approach is twofold, as one makes use of both active and passive measurement techniques to gather a deep understanding on the traffic Skype generates.