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ETSI TR 121900-V15.1.1
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 15.1.1 Release 15)
Standard published on 9.11.2018
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ETSI TR 121900-V15.2.0
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 15.2.0 Release 15)
Standard published on 9.4.2019
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ETSI TR 121900-V16.3.0
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; Technical Specification Group working methods (3GPP TR 21.900 version 16.3.0 Release 16)
Standard published on 16.11.2020
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ETSI TR 121900-V16.4.0
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; Technical Specification Group working methods (3GPP TR 21.900 version 16.4.0 Release 16)
Standard published on 15.4.2021
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ETSI TR 121900-V17.1.0
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; Technical Specification Group working methods (3GPP TR 21.900 version 17.1.0 Release 17)
Standard published on 10.5.2022
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ETSI TR 121900-V17.2.0
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; Technical Specification Group working methods (3GPP TR 21.900 version 17.2.0 Release 17)
Standard published on 11.7.2022
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ETSI TR 121900-V18.2.0
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; Technical Specification Group working methods (3GPP TR 21.900 version 18.2.0 Release 18)
Standard published on 22.5.2024
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ETSI TR 121900-V19.1.0
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; Technical Specification Group working methods (3GPP TR 21.900 version 19.1.0 Release 19)
Standard published on 22.1.2026
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ETSI TR 121900-V3.2.0
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Universal Mobile Telecommunications System (UMTS); Working methods (3G TR 21.900 version 3.2.0 Release 1999)
Standard published on 28.1.2000
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ETSI TR 121900-V3.3.0
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Universal Mobile Telecommunications System (UMTS); Working methods (3G TR 21.900 version 3.3.0 Release 1999)
Standard published on 22.6.2000
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