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This book has studied the performance of the VoIP networks from three aspects, Quality of Service, price, and security. As a real-time application, VoIP networks are challenged by the legacy voice quality as exhibited by the traditional PSTN. This book has introduced the notion of upper bound of delay and jitter, termed threshold, to characterize the QoS of VoIP traffic. Traffic that suffers a delay/jitter higher than the bound is considered lost and does not constitute effective throughput. This book has presented the impact of the threshold delay/jitter on the resource consumption under different queuing models which have proven to represent adequately traffic for VoIP. The learning from the analysis has been extended and applied to assessing the impact of risks constituted by a number of transportation channels where the risk associated with each channel can be quantified by a known distribution. Finally, this book has also presented an authentication mechanism using which networks can mutually authenticate each other to afford the possibility of authentication across networks.
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- Conclusions and Future Work
Pramode K. Verma
- Springer Berlin Heidelberg
- Chapter 11