1 Introduction
1.1 General
1.2 Definitions
1.3 Symbols and abbreviations
1.4 Services supported by this Recommendation
1.5 Service invocation
2
Call set-up and release
2.1 Functional model
2.2 Information flows required for en-bloc and digit-by-digit
sending call set-up and call release
2.3 SDLs
2.4 Interworking between public and private ISDNs
2.5 Functional entity actions
2.6 Additional FEAs required for digit-by-digit call setup cases
2.7 Allocation of functions to physical entities
Annex A – Interaction with Supplementary Services