GSM standard 09.60, ETSI, 1996–98, this standard covers the original version 0 of GTP. 3GPP TS 29.060 V6.9.0 (2005-06), 3rd Generation Partnership Project, 650 Route des Lucioles - Sophia Antipolis, Valbonne - FRANCE, 2005–06. This is the primary standard defining all of the GTP variants for GTP version 1. 3GPP TS 32.295 V6.1.0 (2005-06), 3rd Generation Partnership Project, 650 Route des Lucioles - Sophia Antipolis, Valbonne - FRANCE, 2005–06. This standard covers using GTP for charging. 3GPP TS 29.274 V8.1.0 (2009-03), 3rd Generation Partnership Project, 650 Route des Lucioles - Sophia Antipolis, Valbonne - FRANCE, 2009–03. GTPv2 for evolved GPRS. External links The 3GPP web site, home of the GTP standard Free and open source implementation of GPRS Tunnelling Protocol version 2 (GTPv2) or Evolved GTP (eGTP) Network protocols Mobile telecommunications standards GSM standard 3GPP standards Tunneling protocols