1 Scope
2 References
3 Definitions
4 Abbreviations and acronyms
5 Conventions
6 Rationale
7 Key issues of interconnection
8 General principles of interconnection of VoLTE-based networks
9 E2E scenarios in terms of interconnection and roaming
9.1 E2E scenarios in terms of interconnection and roaming
9.2 VoLTE consideration
9.3 Device and U/ISIM consideration
10 IMS roaming and interworking guidelines
11 Services for e2e VoLTE/ViLTE interconnection scenarios
12 Interconnection for Inter-IMS scenario
12.1 Scenario 1
12.2 Protocol implementation statement (PICS)
Appendix I – The current
standards, guidelines and other documents related to VoLTE interconnection
I.1 GSMA
I.2 ITU
Bibliography