VoIP Service Quality: Measuring and Evaluating Packet-Switched Voice

William Hardy

  • 出版商: McGraw-Hill Professional
  • 出版日期: 2003-01-17
  • 定價: $1,760
  • 售價: 9.9$1,735
  • 貴賓價: 9.4$1,648
  • 語言: 英文
  • 頁數: 317
  • 裝訂: Hardcover
  • ISBN: 0071410767
  • ISBN-13: 9780071410762

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商品描述

Despite the features that make Voice over IP so attractive from the standpoint of cost and flexibility of telephone services, businesses will only adopt it once they’ve determined whether, and under what circumstances, the quality of VoIP will be satisfactory to users. In these pages you’ll find everything you need to know to answer those questions, both now and in the future as other packet-switched voice services emerge.

Contents
 Part 1: FOUNDATIONS
    Chapter 1: Basics
    Chapter 2: Principal System-Level Determinants of Connection Quality
    Chapter 3: Quality Expectations and Requirements
    Chapter 4: Impairments Created or Exacerbated by Packet Switching
 Part 2: MEASUREMENT AND EVALUATION OF VOICE QUALITY
    Chapter 5: Voice Quality
    Chapter 6: Service Attribute Tests
    Chapter 7: Measurement of Speech Distortion
    Chapter 8: Multiple-Effects Models
    Chapter 9: Applications
  Part 3: OTHER ASPECTS OF QUALITY OF SERVICE
    Chapter 10: Other Quality of Service Concerns
    Chapter 11: Quality of Voice for Interactive Multimedia Exchange
     Afterword
     Appendix A: Types of Codecs
     Appendix B: How a Jitter Buffer Works
     Appendix C: Extensions of the Loss/Noise Grade of
Service Model
     Appendix D: U.S. Patents for Voice Quality
Measurement and Analysis Technology
     References
     Index