1 Scope
2 References
3 Definitions
4 Abbreviations and acronyms
5 Conventions
6 General principles of interconnection of VoLTE-based networks
6.1 E2E scenarios in terms of interworking, interconnection and
roaming
6.2 Interconnection and roaming scenarios test selection
description (Excel file)
7 IMS roaming and interconnection options
8 VoLTE interconnect and roaming tests
8.1 Test suite structure
8.2 VoLTE consideration
8.3 Device and U/ISIM consideration
9 Test purposes
9.1 Testing of SIP protocol requirements
9.2 Video call
10 QoS/QoE/ test requirements
10.1 Call setup time (PDD)
10.2 Listening speech quality
10.3 End-to-end audio delay
10.4 End -to-end audio delay variation
10.5 Early media call flow options and listening speech quality
10.6 Fax transmission
10.7 ViLTE KPI
Annex A – Excel test list
Appendix I – Examples of codecs which can be used in the case of
interworking/roaming
Appendix II – Execution of grouped tests
Bibliography