CONTENTS

 1     Scope
 2     References
 3     Terms and definitions
 4     Abbreviations
 5     Characteristics of digital interfaces for subscriber access
        5.1     General
        5.2     Interface V₁
                  5.2.1     General    
                  5.2.2     Functional characteristics
                  5.2.3     Electrical characteristics
                  5.2.4     Channel types, channel allocation and signalling
        5.3     Interface V₂
                  5.3.1     General    
                  5.3.2     Functional characteristics
                  5.3.3     Electrical characteristics
                  5.3.4     Channel types, channel allocation and signalling
        5.4     Interface V₃
                  5.4.1     General    
                  5.4.2     Functional characteristics
                  5.4.3     Electrical characteristics
                  5.4.4     Channel types, channel allocation and signalling
        5.5     Interface V₄
        5.6     Interface V₅
                  5.6.1     General    
                  5.6.2     Functional characteristics
                  5.6.3     Electrical characteristics
                  5.6.4     Channel types, channel allocation and signalling
 6     Characteristics of analogue interfaces for subscriber access
        6.1     Interface Z
Appendix I  –  Bibliography