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
Features of IPv6 migration in NGNs
6.1
Communication scenarios in IPv6 migration for NGN operators
6.2
Available transition mechanisms for NGN operator deployment
6.3
Function architecture of NGNs in the IPv6 migration period
7
Phases of IPv6 migration in NGNs
7.1
Phase 0: NGN with IPv4
7.2
Phase 1: Connecting IPv6-based NGNs across an IPv4-based NGN
7.3
Phase 2: Connecting IPv6-based NGNs and IPv4-based NGNs across a dual-stack
NGN
7.4
Phase 3: Connecting IPv4-based NGNs through IPv6-based NGNs
7.5
Phase 4: Fully migrated IPv6-based NGN
8
Functional requirements of IPv6 migration for NGN operators
8.1
General functional requirements to support IPv6 migration for NGN
operators
8.2
Functional requirements of each IPv6 migration phase for NGN operators
9
Security Considerations
Bibliography