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_4 in BASIC    
Appendix I – Calculation of R from MOSCQE Values