�1���� Definition
�2����
Description
������� 2.1���� General description
������� 2.2���� Specific terminology
������� 2.3���� Applicability to telecommunication services
�3����
Procedures
������� 3.1���� Provision/withdrawal
������� 3.2���� Normal procedures
������� 3.3���� Exceptional procedures
�4����
Network capabilities for charging
�5����
Interworking requirements
������� 5.1���� Interworking with non-ISDN networks
������� 5.2���� Interworking with private ISDNs
�6����
Interaction with other supplementary services
������� 6.1���� Advice of charge services
������� 6.2���� Call hold (HOLD)
������� 6.3���� Call transfer
������� 6.4���� Call Waiting (CW)
������� 6.5���� Closed User Group (CUG)
������� 6.6���� Completion of calls services
������� 6.7���� Conference services
������� 6.8���� Diversion services
������� 6.9���� Direct-Dialling-In (DDI)
������ 6.10���� In-call Modification (IM)
������ 6.11���� ISDN Freephone Service (IFS)
������ 6.12���� Line Hunting (LH)
������ 6.13���� Malicious Call Identification (MCID)
������ 6.14���� Multi-Level Precedence and Preemption (MLPP)
������ 6.15���� Multiple Subscriber Number (MSN)
������ 6.16���� Name identification services
������ 6.17���� Number identification services
������ 6.18���� Outgoing Call Barring (OCB)
������ 6.19���� Reverse Charging (REV)
������ 6.20���� Sub-addressing (SUB)
������ 6.21���� Support of Private Numbering Plans (SPNP)
������ 6.22���� Terminal Portability (TP)
������ 6.23���� User-to-User signalling (UUS)