CONTENTS

 1     Introduction
 2     Scope and objective
 3     References
 4     Abbreviations
 5     General principles applicable to all services
 6     Impact of interworking situations
        6.1     Incoming calls originated in non-ISDNs
        6.2     N-BC and N-LLC application guidelines for emulated N-ISDN services
 7     Request and recognition of a basic B-ISDN service
        7.1     Request and recognition of a broadband bearer service
 8     Application of the B-BC, N-BC, N-HLC, N-LLC, ATM traffic descriptor, QS parameter and AAL parameter information elements for emulated N-ISDN services