New PDF release: VoIP Handbook: Applications, Technologies, Reliability, and

By Syed A. Ahson, Mohammad Ilyas

ISBN-10: 1420070207

ISBN-13: 9781420070200

The variety of around the globe VoIP clients is definitely over 38 million and due to acclaim for low-cost, prime quality prone comparable to skype is projected to extend to almost 250 million in the subsequent 3 years. the way forward for voice shipping has formally arrived.

The VoIP guide: purposes, applied sciences, Reliability, and defense captures the present country of the art in VoIP expertise and serves because the entire reference in this soon-to-be ubiquitous know-how. It additionally provides:

  • A step by step technique to judge VoIP functionality sooner than community implementation
  • An worthy review of implementation demanding situations and a number of other VoIP multipoint convention structures
  • Unparalleled insurance of layout and engineering matters such VoIP site visitors, QoS specifications, and VoIP move

As this promising technology’s recognition raises, new calls for for better caliber, lowered rate, and seamless operation will simply bring up. Edited via preeminent instant communications specialists Ahson and Illyas, the VoIP instruction manual publications you to winning deployment.

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Additional info for VoIP Handbook: Applications, Technologies, Reliability, and Security

Sample text

Prasad, C. Dovrolis, M. Murray, and K. C. Claffy, “Bandwidth estimation: Metrics, measurement techniques, and tools,” IEEE Network Magazine, vol. 17, no. 6, December 2003, pp. 27–35. 30. , “Cisco 2621 modular access router security policy,” 2001, http://www. pdf. 31. pdf. 32. F. , 3rd Edition, 2005. 33. K. M. Chandy and C. H. Sauer, “Approximate methods for analyzing queueing network models of computing systems,” Journal of ACM Computing Surveys, vol. 10, no. 3, September 1978, pp. 281–317. 34.

41]. With OPNET simulation, the number of VoIP calls that could be supported was 306. From the results of analysis and simulation, it is apparent that both results are in line and are a close match, as based on the analytic approach, a total of 313 calls can be supported. There is only a difference of seven calls between the analytic and simulation approaches. The difference can be attributed to the degree of accuracy between the analytic approach and OPNET simulation. Our analytic approach is an approximation.

When up to three neighbor nodes are allowed for each parent node: • the maximum power usage decreases but the user delay increases, compared with when up to four neighbor nodes are allowed for each node; • the maximum user delay decreases but the maximum power usage increases, compared with when up to two neighbor nodes are allowed for each node. Therefore the number of maximum neighbor nodes should be chosen based on the maximum user data delay acceptable and optimum power usage.

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VoIP Handbook: Applications, Technologies, Reliability, and Security by Syed A. Ahson, Mohammad Ilyas


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