DIN EN 300392-2:2011 Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 2: Air Interface (AI) (Endorsement of the English version EN 300392-2 V3.4.1 (2010-08) as German standard)
2017DIN EN 300392-2:2017 Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 2: Air Interface (AI) (Endorsement of the English version EN 300 392-2 V3.8.1 (2016-08) as German standard)
2011DIN EN 300392-2:2011 Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 2: Air Interface (AI) (Endorsement of the English version EN 300392-2 V3.4.1 (2010-08) as German standard)
2008DIN EN 300392-2:2008 Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 2: Air Interface (AI) (Endorsement of the English version EN 300392-2 V3.2.1 (2007-09) as German standard)