New Appendix I – The E-model‑based quality contours for predicting speech transmission quality and user satisfaction from time-varying transmission impairments    
        I.1        Abstract  
        I.2        The E-model reduced to the transport layer          
        I.3        Contours of speech transmission quality (contours of user satisfaction)       
        I.4        Predicting speech transmission quality from time‑varying transmission impairments with the use of quality contours    
        I.5          Appendix I references