ETSI EN 301 347

Digital cellular telecommunications system (Phase 2 ) (GSM); General Packet Radio Service (GPRS); GPRS Tunnelling Protocol (GTP) across the Gn and Gp interface (GSM 09.60 version 7.3.1 Release 1998) Edition: 7.3.1
European Telecommunications Standards Institute / 01-Jun-2000 / 68 pages