CONTENTS

 1     Scope 
 2     References 
 3     Definitions  
 4     Abbreviations   
 5     General considerations     
        5.1     Objectives 
        5.2     ISDN/xDSL technologies  
        5.3     ISDN/xDSL: Technical problems   
        5.4     Transmission medium         
 6     Recommended DLL requirements for ISDN/xDSL          
        6.1     Minimum digital local line requirements for ISDN/xDSL      
        6.2     Digital local line physical characteristics      
        6.3     Principal electrical and transmission characteristics for ISDN/xDSL services and systems    
        6.4     Use of multi-pair copper network cable supporting shared multiple services such as POTS, ISDN and xDSL    
Appendix I – Bridge taps (BT): Effect of the loss due to the length of a bridge tap    
Appendix II – France Telecom experience    
       II.1     Mass deployment of ADSL: Loop qualification process      
       II.2     Maximum reach of ADSL systems  
       II.3     On field quality of the copper pair   
Appendix III – India experience    
Appendix IV – Brazil experience    
       IV.1     Introduction          
       IV.2     Local loop requirements