�1���� Introduction
�2����
Charging aspects
������� 2.1���� Number identification
������� 2.2���� Direct-Dialling-In and Multiple Subscriber Number and
Sub-addressing services
������� 2.3���� Call Forwarding, Call Transfer and Call Deflection services
������� 2.4���� Line Hunting
������� 2.5���� Call Waiting and Call Hold
������� 2.6���� Conference Calling
������� 2.7���� Closed User Group, Private Numbering Plan
������� 2.8���� Advice of Charge
������� 2.9���� Priority service
������ 2.10���� Multi-Level Precedence and Preemption service
������ 2.11���� Outgoing Call Barring
������ 2.12���� In-call Modification
������ 2.13���� Call completion service
�3����
Accounting
�4����
Charging mechanisms and support requirements
Annex� A� �� Summary of charging
mechanisms and support requirements for supplementary services
Annex� B� �� Alphabetical list of
abbreviations used in this Recommendation