Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1 (3GPP TS 22.228 version 14.1.0 Release 14)

Die Norm herausgegeben am 4.5.2017

Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1 (3GPP TS 22.228 version 15.3.0 Release 15)

Die Norm herausgegeben am 3.7.2018

Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1 (3GPP TS 22.228 version 16.1.0 Release 16)

Die Norm herausgegeben am 16.11.2020

Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1 (3GPP TS 22.228 version 17.1.0 Release 17)

Die Norm herausgegeben am 10.5.2022

Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1 (3GPP TS 22.228 version 18.0.1 Release 18)

Die Norm herausgegeben am 13.5.2024

Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1 (3GPP TS 22.228 version 19.0.0 Release 19)

Die Norm herausgegeben am 23.10.2025

Universal Mobile Telecommunications System (UMTS); IP multimedia subsystem; Stage 1 (3GPP TS 22.228 version 5.5.0 Release 5)

Die Norm herausgegeben am 31.3.2002

Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Service requirements for the IP multimedia core network subsystem; Stage 1 (3GPP TS 22.228 version 5.6.0 Release 5)

Die Norm herausgegeben am 30.6.2002

Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1 (3GPP TS 22.228 version 5.7.0 Release 5)

Die Norm herausgegeben am 31.3.2006

Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1 (3GPP TS 22.228 version 6.10.0 Release 6)

Die Norm herausgegeben am 30.9.2005