1 Scope
2 References
3 Definitions
3.1 Terms defined elsewhere
3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
6 The E-model, a computational model for use in transmission planning
6.1 Introduction
7 Structure and basic algorithms of the E-model
7.1 Calculation of the transmission rating factor, R
7.2 Basic signal-to-noise ratio, Ro
7.3 Simultaneous impairment factor, Is
7.4 Delay impairment factor, Id
7.5 Equipment impairment factor, Ie
7.6 Advantage factor, A
7.7 Default values
Annex A – Conditions of using the E-model
A.1 Examples of conditions where caution must be exercised when
using the E‑model
A.2 Conditions for which the performance of the E-model has been
improved by updating from the earlier version
Annex B – Quality measures derived from the transmission rating factor R
Appendix I – Calculation of R from MOSCQE values
Appendix II – Provisional impairment factor framework for wideband speech
transmission
Appendix III – Reference implementation of the E-model in ITU-T G.107
Appendix IV – Use of the E-model in conjunction with noise reduction or echo
canceller systems in the network or the terminal equipment
Bibliography