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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); Universal Mobile Telecommunications System (UMTS); LTE; Architectural requirements (3GPP TS 23.221 version 14.1.0 Release 14)
Standard published on 10.5.2017
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Architectural requirements (3GPP TS 23.221 version 14.2.0 Release 14)
Standard published on 20.12.2018
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Architectural requirements (3GPP TS 23.221 version 15.0.0 Release 15)
Standard published on 26.7.2018
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Architectural requirements (3GPP TS 23.221 version 15.1.0 Release 15)
Standard published on 11.3.2019
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Architectural requirements (3GPP TS 23.221 version 16.2.0 Release 16)
Standard published on 18.11.2020
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Architectural requirements (3GPP TS 23.221 version 17.0.0 Release 17)
Standard published on 5.4.2022
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Architectural requirements (3GPP TS 23.221 version 18.0.0 Release 18)
Standard published on 24.4.2024
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Architectural requirements (3GPP TS 23.221 version 19.0.0 Release 19)
Standard published on 14.10.2025
Selected format:Universal Mobile Telecommunications System (UMTS); Architectural requirements (3GPP TS 23.221 version 4.0.0 Release 4)
Standard published on 19.4.2001
Selected format:Universal Mobile Telecommunications System (UMTS); Architectural requirements (3GPP TS 23.221 version 4.1.0 Release 4)
Standard published on 26.7.2001
Selected format:Latest update: 2026-09-19 (Number of items: 2 302 332)
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