1 Scope
2 References
3 Definitions
4 Abbreviations and acronyms
5 Conventions
6 Methodology for identification of QoS criteria and parameters
6.1 General considerations
6.2 Identification of user's QoS criteria
6.3 Conversion of QoS criteria to QoS parameters
6.4 Publication of QoS parameters
6.5 Practical issues when using QoS parameters
7 Measurement of QoS parameters
7.1 Objective measurements
7.2 Subjective measurements
7.3 Who should perform the measurements
8 Guidelines for defining quality objectives
8.1 General considerations
8.2 Defining initial quality objectives
8.3 Defining target values
8.4 Tuning quality objectives
8.5 Verification of QoS objectives
Annex A – Guidelines on selection of representative samples
A.1 Scope
A.2 Methodology for selection of representative samples
Appendix I – References for the development of QoS metrics and examples of QoS
parameters
I.1 Examples of QoS parameters
Appendix II – Quality objectives
II.1 Voice telephony and voiceband services
II.2 Services over packet-based networks
Appendix III – Examples for the usage of the three models
III.1 Universal model
III.2 Performance model
III.3 Four-market model
Appendix IV – Sample calculator
IV.1 Sample calculator – R implementation
IV.2 Sampling algorithm – R implementation
Appendix V – Minimum required number of measurements for statistically
significant QoS parameter evaluations
V.1 Comparison of QoS parameters for benchmarking and quality
trends
Bibliography