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