This book addresses three important issues in VoIP networks:
Quality of Service, pricing and security.
In addressing Quality of Service (QoS), it introduces the notion
of delay not exceeding an upper limit, termed the bounded delay, to
measure the Quality of Service in VoIP networks. Queuing models are
introduced to measure performance in terms of bounded delays.
Closed form solutions relating the impact of bounding delays on
throughput of VoIP traffic are provided. Traffic that exceeds the
delay threshold is treated as lost throughput. The results
addressed can be used in scaling resources in a VoIP network for
different thresholds of acceptable delays. Both single and multiple
switching points are addressed. The same notion and analysis are
also applied on jitter, another important indicator of the VoIP
QoS
This book also develops a pricing model based on the Quality of
Service provided in VoIP networks. It presents the impact of
quality of VoIP service demanded by the customer on the
transmission resources required by the network using an analytical
approach. In addition, it extends and applies the delay throughput
analysis developed for VoIP networks in 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, the book explores areas for future research
that can be built on the foundation of research presented.
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