CONTENTS

 1     Scope
 2     References
 3     Abbreviations and definitions
        3.1     Abbreviations
        3.2     Definitions
 4     ISDN customer access
 5     B‑ISDN customer access
Appendix I – Examples of access network implementation and the related basic  requirements on V_B interfaces
        I.1     Introduction
        I.2     Examples of access network implementation and the related basic requirements
        I.3     Specific interfaces for UNI and SNI
        I.4     Performance parameters