Rec. ITU-T D.232 (09/1994) … SPECIFIC TARIFF AND ACCOUNTING PRINCIPLES APPLICABLE TO ISDN SUPPLEMENTARY SERVICES
FOREWORD
CONTENTS
1 Introduction
2 Charging aspects
    2.1 Number identification
        2.1.1 Charging principles
    2.2 Direct-Dialling-In and Multiple Subscriber Number and Sub-addressing services
        2.2.1 Charging principles
    2.3 Call Forwarding, Call Transfer and Call Deflection services
        2.3.1 Charging principles
    2.4 Line Hunting
        2.4.1 Charging principles
    2.5 Call Waiting and Call Hold
        2.5.1 Charging principles
    2.6 Conference Calling
        2.6.1 Charging principles
    2.7 Closed User Group, Private Number Plan
        2.7.1 Charging principles
    2.8 Advice of Charge
        2.8.1 Charging principles
    2.9 Priority service
        2.9.1 Charging principle
    2.10 Multi-level Precedence and Preemption service
        2.10.1 Charging principles
    2.11 Outgoing Call Barring
        2.11.1 Charging principles
3 Accounting
4 Charging mechanisms and support requirements
Annex A … Summary of charging mechanisms and support requirements for supplementary services