CONTENTS

 1     Scope 
 2     Normative references       
 3     Definitions and abbreviations        
 4     Sending characteristics     
        4.1     Loudness rating     
        4.2     Sensitivity/frequency characteristics
        4.3     Noise     
        4.4     Distortion  
        4.5     Discrimination against out-of-band input signals      
 5     Receiving characteristics  
        5.1     Loudness rating     
        5.2     Sensitivity/frequency characteristics
        5.3     Noise     
        5.4     Distortion  
        5.5     Spurious out-of-band receiving signals        
 6     Echo path loss characteristics       
        6.1     Weighted Terminal Coupling Loss (TCLw)
        6.2     Stability loss          
 7     Delay  
Annex A – Objective measurement methods for wideband hands-free telephones using the reference codec approach    
        A.1     Introduction          
        A.2     Electrical interface specifications    
        A.3     Electro-acoustic measurement considerations         
        A.4     Sending measurements      
        A.5     Receiving measurements    
        A.6     Echo path loss measurements        
        A.7     Delay measurements