CONTENTS

�1���� Definition
�2���� Description
������� 2.1���� General description
������� 2.2���� Specific terminology
������� 2.3���� Qualifications on the applicability to telecommunication services
�3���� Procedures
������� 3.1���� Provision/withdrawal
������� 3.2���� Normal procedures
������� 3.3���� Exceptional procedures
������� 3.4���� Alternative procedures
�4���� Network capabilities for charging
�5���� Interworking considerations
������� 5.1���� Interworking with non-ISDN networks
������� 5.2��� �Interworking with private ISDN
�6���� Interaction with other supplementary services
������� 6.1���� Advice of charge services (AOC)
������� 6.2���� Call Hold (HOLD)
������� 6.3���� Call transfer services (ECT, NCT)
������� 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 (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���� Terminal Portability (TP)
������ 6.22���� User-to-User Signalling (UUS)
�7���� Dynamic description