ETSI TS 101 346
ETSI TS 101 346
Digital cellular telecommunications system (Phase 2+) (GSM); General Packet Radio Service (GPRS); Serving GPRS Support Node (SGSN) - Visitors Location Register (VLR); Gs interface layer 3 specification (GSM 09.18 version 7.1.0 Release 1998)
standard published 08/01/1999 by European Telecommunications Standards Institute
