ETSI TS 129 016 English Printed Edition English PDF Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); General Packet Radio Service (GPRS); Serving GPRS Support Node (SGSN) - Visitors Location Register (VLR); Gs interface network service specification (3GPP TS 29.016 version 4.0.0 Release 1

standard published 03/01/2001 by European Telecommunications Standards Institute