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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); Functional stage 2 description of location services in UMTS (3GPP TS 23.171 version 3.6.0 Release 1999)
Standard published on 31.12.2001
Selected format:Universal Mobile Telecommunications System (UMTS); Functional stage 2 description of location services in UMTS (3GPP TS 23.171 version 3.7.0 Release 1999)
Standard published on 31.3.2002
Selected format:Universal Mobile Telecommunications System (UMTS); Functional stage 2 description of location services in UMTS (3GPP TS 23.171 version 3.8.0 Release 1999)
Standard published on 24.6.2002
Selected format:Universal Mobile Telecommunications System (UMTS); Functional stage 2 description of location services (LCS) in UMTS (3GPP TS 23.171 version 3.9.0 Release 1999)
Standard published on 30.9.2002
Selected format:Universal Mobile Telecommunications System (UMTS); Technical realization of Circuit Switched (CS) multimedia service; UDI/RDI fallback and service modification; Stage 2 (3GPP TS 23.172 version 10.0.1 Release 10)
Standard published on 19.4.2011
Selected format:Universal Mobile Telecommunications System (UMTS); Technical realization of Circuit Switched (CS) multimedia service UDI/RDI fallback and service modification; Stage 2 (3GPP TS 23.172 version 11.0.0 Release 11)
Standard published on 8.10.2012
Selected format:Universal Mobile Telecommunications System (UMTS); Technical realization of Circuit Switched (CS) multimedia service UDI/RDI fallback and service modification; Stage 2 (3GPP TS 23.172 version 12.0.0 Release 12)
Standard published on 23.10.2014
Selected format:Universal Mobile Telecommunications System (UMTS); Technical realization of Circuit Switched (CS) multimedia service UDI/RDI fallback and service modification; Stage 2 (3GPP TS 23.172 version 13.0.0 Release 13)
Standard published on 18.1.2016
Selected format:Universal Mobile Telecommunications System (UMTS); Technical realization of Circuit Switched (CS) multimedia service UDI/RDI fallback and service modification; Stage 2 (3GPP TS 23.172 version 14.0.0 Release 14)
Standard published on 3.4.2017
Selected format:Universal Mobile Telecommunications System (UMTS); Technical realization of Circuit Switched (CS) multimedia service UDI/RDI fallback and service modification; Stage 2 (3GPP TS 23.172 version 15.0.0 Release 15)
Standard published on 11.7.2018
Selected format:Latest update: 2026-07-26 (Number of items: 2 290 396)
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