�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)