1
Scope
1.1 Functional reference model
2
References
3
Definitions
3.1 Functional model definitions
3.2 Definition of signalling flow
objects
4
Abbreviations
5
Backbone network signalling flows
5.1 Object reference model
5.2 Definitions
5.3 Backbone network establishment
5.4 Call modification flows
5.5 Call release
5.6 Bearer release
Annex A – Composite structured AAL 1 signalling flows
A.1 Changes to "Backward Backbone
Network Establishment Composite Flow" procedures necessary to support
structured AAL 1 bearers
A.2 Changes to the "Forward
Composite" flows necessary to support structured AAL 1 bearers
Annex B – ISUP
"NNI" access establishment and release flows
Annex C – Overview of
bearer redirection
C.1 Bearer redirection
C.2 Redirection Schema
Annex D – Overview of
"Tunnelling"
D.1 Introduction
D.2 Operation of the mechanism