3 Reverse Charging
3.1 Scope
3.2 References
3.3 Definitions
3.4 Abbreviations
3.5 Description
3.6 Operational requirements
3.7 Coding requirements
3.8 State definitions
3.9 Signalling procedures at the coincident S and T reference
point
3.10 Procedures at T reference point for Interworking with private
ISDNs
3.11 Interaction with other networks
3.12 Interaction with (other) supplementary services
3.13 Parameter values
3.14 Dynamic description (SDLs)