ITU-T - Q.3640
Framework of interconnection of VoLTE/ViLTE-based networks
|Publication Date:||1 January 2018|
This Recommendation describes the framework and procedures that should be implemented by operators for establishing an interconnection between voice over long-term evolution / video over long-term evolution (VoLTE/ViLTE)-based networks to achieve worldwide interoperability.
This Recommendation identifies additional scenarios and requirements for VoLTE/ViLTE interconnection which have not been defined in existing 3GPP standards and GSMA guidelines, as follows:
- possible E2E scenarios in terms of interconnection and roaming;
- description of the EPC functions which should be supported;
- EPC configuration requirements;
- device and U/ISIM requirements;
- comparison of VoLTE roaming architecture;
- list of mandatory and optional services which should be supported by operators for interconnection and roaming scenarios;
- protocol implementation statement (PICS) needed for the service level agreement (SLA).