ETSI TS 124 030
ETSI TS 124 030
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Location Services (LCS); Supplementary service operations - Stage 3 (3G TS 24.030 version 3.1.0 Release 1999)
standard published 06/01/2000 by European Telecommunications Standards Institute