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ETSI TS 123228-V19.6.0
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 19.6.0 Release 19)
Standard published on 24.3.2026
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ETSI TS 123228-V19.7.0
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 19.7.0 Release 19)
Standard published on 20.7.2026
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ETSI TS 123228-V5.10.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 5.10.0 Release 5)
Standard published on 30.9.2003
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ETSI TS 123228-V5.11.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 5.11.0 Release 5)
Standard published on 31.12.2003
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ETSI TS 123228-V5.12.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 5.12.0 Release 5)
Standard published on 31.3.2004
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ETSI TS 123228-V5.13.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 5.13.0 Release 5)
Standard published on 31.12.2004
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ETSI TS 123228-V5.14.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 5.14.0 Release 5)
Standard published on 30.9.2005
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ETSI TS 123228-V5.15.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 5.15.0 Release 5)
Standard published on 30.6.2006
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ETSI TS 123228-V5.4.1
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Universal Mobile Telecommunications System (UMTS); IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 5.4.1 Release 5)
Standard published on 17.4.2002
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ETSI TS 123228-V5.5.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 5.5.0 Release 5)
Standard published on 19.6.2002
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