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ETSI TS 122228-V15.3.0
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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)
Standard published on 3.7.2018
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ETSI TS 122228-V16.1.0
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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)
Standard published on 16.11.2020
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ETSI TS 122228-V17.1.0
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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)
Standard published on 10.5.2022
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ETSI TS 122228-V18.0.1
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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)
Standard published on 13.5.2024
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ETSI TS 122228-V19.0.0
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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)
Standard published on 23.10.2025
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ETSI TS 122228-V5.5.0
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Universal Mobile Telecommunications System (UMTS); IP multimedia subsystem; Stage 1 (3GPP TS 22.228 version 5.5.0 Release 5)
Standard published on 31.3.2002
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ETSI TS 122228-V5.6.0
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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)
Standard published on 30.6.2002
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ETSI TS 122228-V5.7.0
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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)
Standard published on 31.3.2006
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ETSI TS 122228-V6.10.0
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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)
Standard published on 30.9.2005
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ETSI TS 122228-V6.11.0
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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 6.11.0 Release 6)
Standard published on 31.3.2006
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