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 Functional requirements and
functions of the NGN for USN applications and services
6.1 NGN functional requirements
6.2
Functional architecture model
6.3 Functions to support USN applications and services
7 Functional architecture of the
NGN for USN applications and services
7.1
Transport processing functional entities
7.2 Transport control
functional entities
7.3 Service control
functional entities
7.4 Application support
functions and service support functions
8 Security considerations
Appendix I – Analysis of service
requirements and network capabilities defined in Recommendation
ITU-T Y.2221
I.1 Requirements
for extensions to NGN capabilities
I.2 Requirements
supported by existing NGN capabilities
I.3 Mapping
table of the requirements and the extended NGN functions
I.4 Mapping
table of the requirements and the existing NGN functions
Appendix II – USN middleware functions provided by NGN
Bibliography