Ahson S.A., Ilyas M. (eds.) VoIP Handbook. Applications, Technologies, Reliability, and Security

CRC Press, 2009. — 472 p.Voice over Internet Protocol (VoIP) is emerging as an alternative to regular public telephones. IP telephone service providers are moving quickly from low-scale toll bypassing deployments to large-scale competitive carrier deployments. This is giving enterprise networks the opportunity and choice of supporting a less expensive single network solution rather than multiple separate networks. Voice deployment over packet networks has experienced tremendous growth over the last four years. The number of worldwide VoIP customers reached 38 million at the end of 2006 and it is projected that there will be approximately 250 million by the end of 2011. VoIP is a reality nowadays and each day, more and more individuals use this system to phone around the world. There are many common programs that make it easy to use VoIP such as Skype, MSN Messenger, VoIPcheap, and so on.
The evolution of the voice service to VoIP from the circuit-switched voice is due to the proliferation of IP networks that can deliver data bits cost-effectively. VoIP technology has been attracting more and more attention and interest from the industry. VoIP applications such as IP telephony systems involve sending voice transmissions as data packets over private or public IP networks as well as reassembling and decoding at the receiving end. Broadband-based residential customers are also switching to IP telephony due to its convenience and cost-effectiveness. The VoIP architecture pushes intelligence towards the end devices (i.e., PCs, IP phones etc.), giving an opportunity to create many new services that cannot be envisaged using the traditional telephone system.
Recently, there has been an increasing interest in using cellular networks for real-time packet-switched services such as VoIP. The reason behind this increased interest in VoIP is to do with using VoIP in All-IP networks instead of using circuit-switched speech. This would result in cost savings for operators as the circuit-switched part of the core network would not be needed anymore. Similar to the wireline networks, voice in wireless mobile networks started with the circuit-switched networks. Since the first deployment of the commercial wireless systems, wireless mobile networks have evolved from the first generation analog networks to the second generation digital networks. Along with the rapid growth of the wireless voice service, the third generation wireless mobile networks have been deployed offering more efficient circuit-switched services that utilize many advanced techniques to more than double the spectral efficiency of the second generation systems. VoIP is an attractive choice for voice transport compared to traditional circuit-switching technology for many reasons. These reasons include lower equipment cost, integration of voice and data applications, lower bandwidth requirements, widespread availability of the IP, and the promise of novel, value-added services. In the future, VoIP services will be expected to operate seamlessly over a converged network referred to as the Next Generation Network (NGN), comprising a combination of heterogeneous network infrastructures that will include packet-switched, circuit-switched, wireless and wireline networks.
The VoIP Handbook provides technical information about all aspects of VoIP. The areas covered in the handbook range from basic concepts to research grade material including future directions. The VoIP Handbook captures the current state of VoIP technology and serves as a source of comprehensive reference material on this subject. The VoIP Handbook comprises four sections: Introduction, Technologies, Applications, and Reliability and Security. It has a total of 23 chapters authored by 46 experts from around the world. The targeted audience for the handbook includes professionals who are designers and/or planners for VoIP systems, researchers (faculty members and graduate students), and those who would like to learn about this field.
The handbook is designed to provide the following specific and salient features: To serve as a single comprehensive source of information and as reference material on VoIP technology
To deal with the important and timely topic of an emerging technology of today, tomorrow, and beyond
To present accurate, up-to-date information on a broad range of topics related to VoIP technology
To present material authored by the experts in the field
To present information in an organized and well-structured manner
Although the handbook is not precisely a textbook, it can certainly be used as a textbook for graduate courses and research-oriented courses that deal with VoIP. Any comments from the readers will be highly appreciated.Deploying VoIP in Existing IP Networks.
Multipoint VoIP in Ubiquitous Environments.
VoIP in a Wireless Mobile Network.
SIP and VoIP over Wireless Mesh Networks.
Technologies.
Compression Techniques for VoIP Transport over Wireless Interfaces.
QoS Monitoring of Voice-over-IP Services.
Current and Future VoIP Quality of Service Techniques.
Measurement and Analysis on the Quality of Skype VoIP.
QoE Assessment and Management of VoIP Services.
Delay Performance and Management of VoIP System.
SIP-Based VoIP Traffic Behavior Profiling and Its Applications.
VoIP over WLAN Performance.
Burst Queue for Voice over Multihop802.11 Networks.
Radio Access Network VoIP Optimization and Performance on 3GPP HSPA/LTE.
Emerging Methods for Voice Transport over MPLS.
Applications.
Implementation of VoIP at the University of Colima.
Multiparty Video Conferencing over Internet.
IMS Charging Management in Mobile Telecommunication Networks.
Commercial Interoperable VoIP IA Architecture.
Reliability and Security.
Security Issues of VoIP.
VoWLAN Security Assessment through CVSS.
Flash Crowds and Distributed Denial of Service Attacks.
Don’t Let the VoIP Service to Become a Nuisance for Its Subscribers.