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ETSI - European Telecommunication Standard Institute(ETSI) produces globally-applicable standards for information and telecommunication technologies (ICT) including land, mobile, radio, converged, broadcast and internet technologies.
Universal Mobile Telecommunications System (UMTS); Application and user interaction in the UE; Principles and specific requirements (3GPP TS 23.227 version 4.2.0 Release 4)
Standard published on 31.3.2002
Selected format:Universal Mobile Telecommunications System (UMTS); Application and user interaction in the UE; Principles and specific requirements (3GPP TS 23.227 version 5.1.0 Release 5)
Standard published on 31.3.2002
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 10.4.0 Release 10)
Standard published on 29.3.2011
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 10.5.0 Release 10)
Standard published on 22.6.2011
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 10.6.0 Release 10)
Standard published on 12.10.2011
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 10.7.0 Release 10)
Standard published on 9.1.2012
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 10.8.0 Release 10)
Standard published on 18.12.2013
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 10.9.0 Release 10)
Standard published on 17.7.2015
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 11.10.0 Release 11)
Standard published on 18.12.2013
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 11.11.0 Release 11)
Standard published on 17.7.2015
Selected format:Latest update: 2026-07-28 (Number of items: 2 290 396)
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