CONTENTS

 1     Scope 
 2     References 
 3     Definitions  
 4     Abbreviations and acronyms        
 5     Conventions     
 6     Basic planning principle    
 7     The impairment factor method      
 8     Equipment impairment factor, Ie   
 9     Quantization distortion unit (qdu)  
Appendix I – Provisional planning values for the equipment impairment factor, Ie, and packet‑loss robustness factor, Bpl    
Appendix II – Considerations concerning the advantage factor A    
       II.1     Introduction           
       II.2     Components of user expectation     
Appendix III – Guidelines regarding individual transmission impairment parameters other than qdu and equipment impairment factor, Ie    
      III.1     Attenuation distortion         
      III.2     Group delay distortion        
      III.3     Talker echo           
      III.4     One-way transmission time 
      III.5     Effect of random bit errors 
      III.6     Effect of burst errors          
      III.7     Effect of syllable speech clipping     
Appendix IV – Provisional planning values for the wideband equipment impairment factor, Ie,wb    
Bibliography