ETSI TS 129 061 English Printed Edition English PDF Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Interworking between the Public Land Mobile Network (PLMN) supporting Packet Based services and Packet Data Networks (PDN) (3GPP TS 29.061 version 3.8.0 Release 1999)

standard published 12/01/2001 by European Telecommunications Standards Institute