ETSI TS 123 054
ETSI TS 123 054
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Description for the use of a Shared Inter Working Function (SIWF) in a GSM PLMN - Stage 2 (3G TS 23.054 version 3.0.0 Release 1999)
standard published 01/01/2000 by European Telecommunications Standards Institute
