ETSI TS 121 101-2000 Digital Cellular Telecommunications Systems (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); 3rd Generation Mobile System Release 1999 Specifications 3G TS 21.101 Version 3.1.0 Release 1999
2017ETSI TS 121 101-2017 Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system (V14.1.0; 3GPP TS 21.101 version 14.1.0 Release 14)
2016ETSI TS 121 101-2016 Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system (V12.0.1; 3GPP TS 21.101 version 12.0.1 Release 12)
2014ETSI TS 121 101-2014 Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system (V11.1.0; 3GPP TS 21.101 version 11.1.0 Release 11)
2010ETSI TS 121 101-2010 Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system V9.0.0; 3GPP TS 21.101 version 9.0.0 Release 9
2009ETSI TS 121 101-2009 Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system V8.1.0; 3GPP TS 21.101 version 8.1.0 Release 8
2008ETSI TS 121 101-2008 Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system V7.2.0; 3GPP TS 21.101 version 7.2.0 Release 7
2007ETSI TS 121 101-2007 Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system V6.7.0; 3GPP TS 21.101 version 6.7.0 Release 6
2006ETSI TS 121 101-2006 Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system 3GPP TS 21.101 Version 6.4.2 Release 6
2005ETSI TS 121 101-2005 Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system 3GPP TS 21.101 Version 6.3.0 Release 6
2004ETSI TS 121 101-2004 Universal Mobile Telecommunications System (UMTS); Technical Specifications and Technical Reports for a UTRAN-based 3GPP system 3GPP TS 21.101 Version 5.7.0 Release 5
2003ETSI TS 121 101-2003 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
2002ETSI TS 121 101-2002 Universal Mobile Telecommunications System (UMTS); 3rd Generation Mobile System Release 1999 Specifications 3GPP TS 21.101 Version 3.9.0 Release 1999
2001ETSI TS 121 101-2001 Universal Mobile Telecommunications System (UMTS); 3rd Generation Mobile System Release 1999 Specifications 3GPP TS 21.101 Version 3.5.0 Release 1999
2000ETSI TS 121 101-2000 Digital Cellular Telecommunications Systems (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); 3rd Generation Mobile System Release 1999 Specifications 3G TS 21.101 Version 3.1.0 Release 1999