1     General
        1.1     Scope
        1.2     References
 2     The E-model, a computational model for use in transmission planning
        2.1     Introduction
        2.2     Source code
 3     The structure and basic algorithms of the E-model
        3.1     Calculation of the transmission rating factor, R
        3.2     Basic signal-to-noise ratio, Ro
        3.3     Simultaneous impairment factor, Is
        3.4     Delay impairment factor, Id
        3.5     Equipment impairment factor, Ie
        3.6     Advantage factor, A
        3.7     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
Annex C –Source code for G.107_3 in BASIC
Appendix I –Calculation of R from MOS Values