1 Scope
2 References
3 Definitions
3.1 Terms defined elsewhere
3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
6 High-level requirements for mechanisms allowing accounting and charging
capabilities in NGN
7 Functional requirements for mechanisms allowing accounting and charging
capabilities in NGN
7.1 Metering functional requirements
7.2 Charging functional requirements
7.3 Accounting and charging protocol high-level requirements
7.4 Accounting and charging information model high-level
requirements
7.5 Charging policy and rule requirements
8 Architectural framework for mechanisms allowing accounting and charging
capabilities in NGN
8.1 Overall architectural framework
8.2 Functional architecture
8.3 Reference points
8.4 Relationship with other NGN functional entities
8.5 Billing domain
9 Security consideration
Appendix I – Offline and online charging scenarios
I.1 Offline charging scenario based on event
I.2 Offline charging scenario based on sessions
I.3 Scenario for CIRs aggregation
I.4 Online charging scenario based on policy
Bibliography