000			02954nam a2200277za04500
001			17458
008			050703s2011 gw eng d
020			_a9783642143304 99783642143304
082			_a621.382 _b223
100			_aVerma, Pramode K. _eauthor. _936139
245			_aVoice over IP Networks _h[electronic resource]: _bQuality of Service, Pricing and Security / _cby Pramode K. Verma, Ling Wang.
300			_aX, 130 p. _bonline resource.
490			_aLecture Notes in Electrical Engineering
490			_x-1876-1100 ; _v-71
505			_aIntroduction -- Voice over Internet Protocol -- Traffic Characterization -- Impact of Bounded Delays on Resource Consumption in Packet Switched Networks with M/M/1 Traffic -- Impact of Bounded Delay on Resource Consumption-M/D/1 Model -- Impact of Bounded Jitter on Resource Consumption in Multi-hop Networks -- Cost and Quality in Packet Switched Networks: An Abstract Approach -- Cumulative Impact of Inhomogeneous Channels on Risk -- A Network Based Authentication Scheme for VoIP -- Conclusions and Future Work.
520			_aThis 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.
650			_aEngineering. _996
650			_aEngineering. _996
650			_933627 _aCOMMUNICATIONS ENGINEERING, NETWORKS
650			_930656 _aTELECOMUNICACIÓN
700			_aWang, Ling. _936140
700			_eauthor. _936141
710			_aSpringerLink (Online service) _9111
856			_uhttp://springer.escuelaing.metaproxy.org/book/10.1007/978-3-642-14330-4 _yir a documento _qURL
942			_2ddc _cCF
999			_c14083 _d14083