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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); LTE; IP Multimedia Subsystem (IMS) emergency sessions (3GPP TS 23.167 version 9.8.0 Release 9)
Standard published on 9.1.2012
Selected format:Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS) emergency sessions (3GPP TS 23.167 version 9.9.0 Release 9)
Standard published on 3.7.2012
Selected format:Universal Mobile Telecommunications System (UMTS); Functional stage 2 description of location services in UMTS (3G TS 23.171 version 3.0.0 Release 1999)
Standard published on 31.3.2000
Selected format:Universal Mobile Telecommunications System (UMTS); Functional stage 2 description of location services in UMTS (3G TS 23.171 version 3.1.0 Release 1999)
Standard published on 22.7.2000
Selected format:Universal Mobile Telecommunications System (UMTS); Location Services (LCS); Functional description; Stage 2 (UMTS) (3GPP TS 23.171 version 3.10.0 Release 1999)
Standard published on 30.6.2003
Selected format:Universal Mobile Telecommunications System (UMTS); Location Services (LCS); Functional description; Stage 2 (UMTS) (3GPP TS 23.171 version 3.11.0 Release 1999)
Standard published on 31.3.2004
Selected format:Universal Mobile Telecommunications System (UMTS); Functional stage 2 description of location services in UMTS (3GPP TS 23.171 version 3.2.0 Release 1999)
Standard published on 31.12.2000
Selected format:Universal Mobile Telecommunications System (UMTS); Functional stage 2 description of location services in UMTS (3GPP TS 23.171 version 3.3.0 Release 1999)
Standard published on 31.3.2001
Selected format:Universal Mobile Telecommunications System (UMTS); Functional stage 2 description of location services in UMTS (3GPP TS 23.171 version 3.4.0 Release 1999)
Standard published on 23.7.2001
Selected format:Universal Mobile Telecommunications System (UMTS); Functional stage 2 description of location services in UMTS (3GPP TS 23.171 version 3.5.0 Release 1999)
Standard published on 16.10.2001
Selected format:Latest update: 2026-07-26 (Number of items: 2 290 396)
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