VoIP Service Quality Measuring and Evaluating Packet Switched Voice 1st Edition by William Hardy 0071410767 9780071410762

VoIP Service Quality Measuring and Evaluating Packet Switched Voice 1st Edition by William Hardy – Ebook PDF Instant Download/Delivery: 0071410767, 9780071410762

Full download VoIP Service Quality Measuring and Evaluating Packet Switched Voice 1st Edition after payment

Product details:

ISBN 10: 0071410767

ISBN 13: 9780071410762

Author: William C. Hardy

VoIP (Voice over Internet Protocol), the next big advance in telecom, has proven difficult to implement. This resource gives service and enterprise telecom managers all the data they need on measurements, tools, and utilities to build a Voice over IP service that works as well as the telephone. * Offers specific techniques for evaluating every factor that affects quality of service * Written in an easy-to-understand ‘plain English’ style * Explains how to translate problems of quality into measurable cause and effect

Table of contents:

PART 1 Foundations
CHAPTER 1 Basics
Voice Services
Quality of Service (QoS)
Objectives of Measurement and Evaluation
Principal User Concerns
Applications

CHAPTER 2 Principal System-Level Determinants of Connection Quality
Voice Codecs
Packetization
Jitter Buffer
Implications

CHAPTER 3 Quality Expectations and Requirements
Service Models
Implications for Codec Selection

CHAPTER 4 Impairments Created or Exacerbated by Packet Switching
Noise on Speech
Echo
Speech Distortion
Voice Clipping
Disruption of Conversational Rhythms

PART 2 Measurement and Evaluation of Voice Quality
CHAPTER 5 Voice Quality
User Assessment of Voice Quality
Measure of Connection Quality
Measurement of Connection Usability
Measurement and Evaluation Tools
Summary and Preview

CHAPTER 6 Service Attribute Tests
Basic Test Structure
Data on Calls
Features of the SAT
Design for Effectiveness
Principles of Test Design
Data-Collection Plans for SATs
Examples

CHAPTER 7 Measurement of Speech Distortion
A Very Short Course in the Physiology of Speech and Hearing
Types of Speech Distortion Measurement
Active Measurement Techniques
Passive Measurement Techniques
Comment

CHAPTER 8 Multiple-Effects Models
A Modern Fable—The Three Little Phonemes and the Big, Bad Network
Multiple-Effects Models
Loss/Noise Grade of Service Model
The E-Model
E-Model Extensions to Packet-Switched Voice Services
Voice Quality Evaluation System

CHAPTER 9 Applications
Analytical Procedure
Examples

PART 3 Other Aspects of Quality of Service
CHAPTER 10 Other Quality of Service Concerns
The Quality of Service (QoS) Model
Call Routing across Packet-Switched Networks
Implications for QoS

CHAPTER 11 Quality of Voice for Interactive Multimedia Exchange
User Concerns
Implications

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

People also search:

voip quality metrics

voip call quality metrics

voip quality

voip call quality

voip quality issues

Tags: William Hardy, Service, Quality, Measuring