ETSI TS 129 061 English Printed Edition English PDF Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Packet Domain; Interworking between the Public Land Mobile Network (PLMN) supporting Packet Based Services and Packet Data Networks (PDN) (3G TS 29.061 version 3.2.0 Release 1999)

standard published 01/01/2000 by European Telecommunications Standards Institute