Table of Contents

 1     Scope            
 2     References 
 3     Definitions  
        3.1     Terms defined elsewhere            
        3.2     Terms defined in this Recommendation  
 4     Abbreviations and acronyms 
 5     General description  
 6     Physical characteristics           
        6.1     General rules   
        6.2     Pin assignments             
 7     Electrical interface specification           
        7.1     Communication mode   
        7.2     Multimedia playback     
        7.3     Multimedia record         
 8     Headset specification              
        8.1     Communication mode   
        8.2     Multimedia playback mode         
        8.3     Multimedia record mode             
 9     Function requirements for terminals with the universal headset interface              
Annex A – Interpolation method for diffuse-field correction    
Appendix I – Audio connectivity for sockets with five contact points    
        I.1                   Plug connector of diameter 2.5 mm with five poles 
        I.2                   Socket connector of diameter 2.5 mm with five contact points           
        I.3                   Plug connector of diameter 3.5 mm with five poles 
        I.4                   Socket connector of diameter 3.5 mm with five contact points           
Appendix II – Audio connectivity for sockets with six contact points    
Appendix III – Audio connectivity for sockets with less than five contact points    
Appendix IV – Other considerations    
Bibliography