CONTENTS

�1���� Scope
�2���� Normative references
�3���� Abbreviations
�4���� General
�5���� Services of the SAAL at the UNI
�6���� Functions of the SSCF at the UNI and signalling protocol stack
�7���� Definition of the boundary of SSCF with layer 3 at the UNI
������� 7.1���� Primitives
������� 7.2���� State transition diagrams
�8���� Definition of the boundary of SSCF with SSCOP
������� 8.1���� Signals
������� 8.2���� Parameters
������� 8.3���� Sequences of Signals between SSCF and SSCOP
�9���� State transition table of SSCF for supporting signalling at UNI
10���� Boundary to layer management
11���� Applicability of SSCOP parameters and timers to signalling at the UNI
Annex A � Protocol Implementation Conformance (PICS) pro forma to Recommendation Q.2130
Annex B � SSCF for Semi-permanent Connection (SPC) control signalling at the UNI
Appendix I����  � Protocol data unit and related primitive sequences for establishment and release of AAL connection at UNI