ETSI TS 124 030

Digital cellular telecommunications system (Phase 2 ) (GSM); Universal Mobile Telecommunications System (UMTS); Location Services (LCS); Supplementary service operations; Stage 3 (3GPP TS 24.030 version 4.2.0 Release 4) Edition: 4.2.0
European Telecommunications Standards Institute / 01-Dec-2001 / 11 pages