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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.
Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system (3GPP TS 21.101 version 3.12.0 Release 1999)
Standard published on 30.6.2003
Selected format:Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system (3GPP TS 21.101 version 3.13.0 Release 1999)
Standard published on 31.3.2004
Selected format:Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system (3GPP TS 21.101 version 3.14.0 Release 1999)
Standard published on 31.12.2004
Selected format:Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system (3GPP TS 21.101 version 3.15.0 Release 1999)
Standard published on 31.3.2005
Selected format:Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system (3GPP TS 21.101 version 3.16.0 Release 1999)
Standard published on 31.3.2006
Selected format:Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system (3GPP TS 21.101 version 3.17.0 Release 1999)
Standard published on 14.1.2008
Selected format:Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system (3GPP TS 21.101 version 3.18.0 Release 1999)
Standard published on 8.1.2010
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); 3rd Generation mobile system Release 1999 Specifications (3GPP TS 21.101 version 3.2.0 Release 1999)
Standard published on 31.12.2000
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); 3rd Generation mobile system Release 1999 Specifications (3GPP TS 21.101 version 3.3.0 Release 1999)
Standard published on 31.3.2001
Selected format:Universal Mobile Telecommunications System (UMTS); 3rd Generation mobile system Release 1999 Specifications (3GPP TS 21.101 version 3.4.0 Release 1999)
Standard published on 26.7.2001
Selected format:Latest update: 2026-06-26 (Number of items: 2 284 409)
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