CONTENTS

�1���� Scope
�2���� References
�3���� Relationships to other Recommendations
�4���� Abbreviations
�5���� Introduction to B-ISDN User Part signalling procedures
������� 5.1���� Address signalling
������� 5.2���� Basic procedures
������� 5.3���� Extensions integrated into the basic procedures
����������������� 5.3.1���� Former ITU-T Recommendation Q.2723.1 (07/96), B-ISDN User Part �Support of additional traffic parameters for Sustainable Cell Rate (SCR) and Quality of Service (QOS)
���������������� �5.3.2���� Former ITU-T Recommendation Q.2723.2 (09/97), Extensions to the B‑ISDN User Part � Support of ATM transfer capability in the broadband bearer capability parameter
����������������� 5.3.3���� Former ITU-T Recommendation Q.2723.3 (09/97), Extensions to the B‑ISDN User Part � Signalling capabilities to support traffic parameters for the Available Bit Rate (ABR) ATM transfer capability
����������������� 5.3.4���� Former ITU-T Recommendation Q.2723.4 (09/97), Extensions to the B‑ISDN User Part � Signalling capabilities to support traffic parameters for the ATM Block Transfer (ABT) ATM transfer capability
����������������� 5.3.5���� Former ITU-T Recommendation Q.2723.5 (03/99), B-ISDN User Part �Support of cell delay variation tolerance indication
���� �������������5.3.6���� Former ITU-T Recommendation Q.2723.6 (05/98), Extension to the Signalling Systems No. 7 B-ISDN User Part � Signalling capabilities to support the indication of the statistical bit rate configuration 2 (SBR 2) and 3 (SBR 3) ATM transfer capabilities
����������������� 5.3.7���� Former ITU-T Recommendation Q.2725.1 (05/98), B-ISDN User Part �Support of negotiation during connection setup
����������������� 5.3.8���� Modification procedures
����������������� 5.3.9���� Former ITU-T Recommendation Q.2726.1 (07/96), B-ISDN User Part �ATM end system address
���������������� 5.3.10���� Former ITU-T Recommendation Q.2727 (07/96), B-ISDN User Part �Support of frame relay
������� 5.4���� Extensions to the basic procedure presented as separate Recommendations
����������������� 5.4.1���� ITU-T Recommendation Q.2722.1 (1996), B-ISDN User Part � Network node interface specification for point-to-multipoint call/connection control
����������������� 5.4.2���� ITU-T Recommendation Q.2724.1 (1996), B-ISDN User Part � Look-ahead without state change for the network node interface
����������������� 5.4.3���� ITU-T Recommendation Q.2726.2 (1996), B-ISDN User Part � Call priority
����������������� 5.4.4���� ITU Recommendation Q.2726.3 (1996), B-ISDN User Part � Network generated session identifier
����������������� 5.4.5���� ITU Recommendation Q.2726.4 (1997), Extensions to the B-ISDN User Part � Application generated identifiers
����������������� 5.4.6���� ITU Recommendation Q.2730 (1995), Broadband integrated services digital network (B-ISDN) Signalling System No. 7 B‑ISDN User Part (B‑ISUP) � Supplementary services
����������������� 5.4.7���� ITU Recommendation Q.2735.1 (1997), Stage 3 description for community of interest supplementary services for B‑ISDN using SS No. 7: Closed User Group (CUG)
����������������� 5.4.8���� ITU Recommendation Q.2765 (1999), Signalling System No. 7 B-ISDN User Part (B‑ISUP) � Application transport mechanism (APM)
����������������� 5.4.9���� ITU-T Recommendation Q.2766.1 (1998), Switched Virtual Path capability
���������������� 5.4.10���� ITU-T Recommendation Q.2767.1 (1998), Soft PVC capability
������� 5.5���� B-ISDN User Part interworking
�6���� Capabilities supported by the B-ISDN User Part
�7���� Services assumed from the MTP
�� �����7.1���� General
������� 7.2���� Description of primitives
����������������� 7.2.1���� Transfer
����������������� 7.2.2���� Pause
����������������� 7.2.3���� Resume
����������������� 7.2.4���� Status
�8���� Future enhancements
������� 8.1���� Version compatibility
������� 8.2���� Coding guidelines for compatibility of B-ISDN User Parts supporting different releases of B‑ISDN services
����������������� 8.2.1���� Messages
����������������� 8.2.2���� Parameters
Appendix I � Guidelines for use of instruction indicators
������� I.1���� Introduction
������� I.2���� Priority or execution
������� I.3���� Notification
������� I.4���� Considerations
����������������� I.4.1���� Discarding unrecognized messages
����������������� I.4.2���� Essential services
������� ����������I.4.3���� Non-essential services
����������������� I.4.4���� Broadband/Narrow-band interworking
����������������� I.4.5���� Pass on
Appendix II � Text from Recommendation Q.2721.1 B-ISDN network Node Interface Signalling Capability Set 2, Step 1
������ II.1���� B-ISDN NNI CS-2.1 content
���������������� II.1.1���� Point-to-multipoint calls
���������������� II.1.2���� Additional traffic parameters
���������������� II.1.3���� Look-ahead
���������������� II.1.4���� Negotiation of traffic characteristics during call setup
���������������� II.1.5���� Modification of traffic characteristic during the active phase of the call
���������������� II.1.6���� ATM end system address
���������������� II.1.7���� Call priority
���������������� II.1.8���� Network call correlation ID
���������������� II.1.9���� Frame relay
������ II.2���� Functional limitations of B-ISDN NNI CS-2.1
������ II.3���� Common protocol principles for B-ISDN NNI CS-2.1
���������������� II.3.1���� General specification model
���������������� II.3.2���� Modelling examples for CS-2.1
������ II.4���� Interworking with CS-1 exchanges
���������������� II.4.1���� Point-to-multipoint calls (multi-party calls)
���������������� II.4.2���� Additional traffic parameters
���������������� II.4.3���� Look-ahead capability
���������������� II.4.4���� Negotiation of traffic characteristics during call setup
���������������� II.4.5���� Modification of traffic characteristics during the active phase of the call
���������������� II.4.6���� ATM end system address
���������������� II.4.7���� Call priority
���������������� II.4.8���� Network call correlation ID
���������������� II.4.9���� Frame relay