Summary - Q.5035 (01/2026) - Protocol framework for IMT-2020 network interconnection with Internet protocol multimedia subsystem (IMS)

Recommendation ITU-T Q.5035 describes the protocol for the International Mobile Telecommunications for 2020 (IMT-2020) network interconnection with Internet protocol multimedia subsystem (IMS). The Recommendation covers the following aspects:
–signalling architecture of IMT-2020 network interconnection with IMS;
–reference points of IMT-2020 network interconnection with IMS;
–signalling flows and message formats of IMT-2020 network interconnection with IMS to support intelligent management, including network element fault prediction.