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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.
Digital cellular telecommunications system (Phase 2+) (GSM); Base Station System (BSS) equipment specification; Radio aspects (3GPP TS 51.021 version 15.0.0 Release 15)
Standard published on 12.7.2018
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Base Station System (BSS) equipment specification; Radio aspects (3GPP TS 51.021 version 15.1.0 Release 15)
Standard published on 12.10.2018
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Base Station System (BSS) equipment specification; Radio aspects (3GPP TS 51.021 version 15.2.0 Release 15)
Standard published on 10.5.2019
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Base Station System (BSS) equipment specification; Radio aspects (3GPP TS 51.021 version 15.3.0 Release 15)
Standard published on 8.4.2020
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Base Station System (BSS) equipment specification; Radio aspects (3GPP TS 51.021 version 16.0.0 Release 16)
Standard published on 16.9.2020
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Base Station System (BSS) equipment specification; Radio aspects (3GPP TS 51.021 version 17.0.0 Release 17)
Standard published on 2.5.2022
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Base Station System (BSS) equipment specification; Radio aspects (3GPP TS 51.021 version 18.0.0 Release 18)
Standard published on 13.5.2024
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Base Station System (BSS) equipment specification; Radio aspects (3GPP TS 51.021 version 19.0.0 Release 19)
Standard published on 21.10.2025
Selected format:Digital cellular telecommunications system (Phase 2+); GSM radio aspects base station system equipment specification (3GPP TS 51.021 version 4.0.0 Release 4)
Standard published on 30.11.2001
Selected format:Digital cellular telecommunications system (Phase 2+); GSM radio aspects base station system equipment specification (3GPP TS 51.021 version 4.1.0 Release 4)
Standard published on 30.6.2002
Selected format:Latest update: 2026-03-20 (Number of items: 2 268 518)
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