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Published in:
2011 | OriginalPaper | Chapter
2. Voice over Internet Protocol
Authors : Pramode K. Verma, Ling Wang
Published in: Voice over IP Networks
Publisher: Springer Berlin Heidelberg
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Abstract
This chapter presents an overview of the architecture and protocols involved in implementing VoIP networks. After the overview, the chapter discusses the various factors that affect a high quality VoIP call. Furthermore, the chapter introduces various codecs and the engineering tradeoffs between delay and bandwidth. Finally, the chapter gives a detailed explanation of the currently widely used VoIP call signaling protocol, the Session Initiation Protocol or SIP.