Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the Inter-System Interface (ISI) - Sub-part 9: Transport layer independent, General design (Endorsement of the English version EN 300 392-3-9 V1.2.1 (2020-04) as a German standard)
Edition 2020-07

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the Inter-System Interface (ISI) - Sub-part 10: General design, PSS1 over E.1 (Endorsement of the English version EN 300 392-3-10 V1.2.1 (2020-04) as a German standard)
Edition 2020-07

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the Inter-System Interface (ISI) - Sub-part 11: General design, SIP/IP (Endorsement of the English version EN 300 392-3-11 V1.2.1 (2020-04) as a German standard)
Edition 2020-07

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the Inter-System Interface (ISI) - Sub-part 12: Transport layer independent Additional Network Feature Individual Call (ANF-ISIIC) (Endorsement of the English version EN 300 392-3-12 V1.2.1 (2020-04) as a German standard)
Edition 2020-07

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the Inter-System Interface (ISI) - Sub-part 13: Transport layer independent Additional Network Feature Group Call (ANF-ISIGC) (Endorsement of the English version EN 300 392-3-13 V1.2.1 (2020-04) as a German standard)
Edition 2020-07

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the Inter-System Interface (ISI) - Sub-part 15: Transport layer independent Additional Network Feature, Mobility Management (ANF-ISIMM) (Endorsement of the English version EN 300 392-3-15 V1.2.1 (2020-04) as a German standard)
Edition 2020-07

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the Inter-System Interface (ISI) - Sub-part 14: Transport layer independent Additional Network Feature Short Data Service (ANF-ISISDS) (Endorsement of the English version EN 300 392-3-14 V1.2.1 (2020-04) as a German standard)
Edition 2020-07

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)
Edition 2017-01

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3 - Sub-part 4: Call Forwarding (CF) (Endorsement of the English version EN 300 392-12-4 V1.4.1 (2016-07) as German standard)
Edition 2017-01

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3 - Sub-part 21: Ambience Listening (AL) (Endorsement of the English version EN 300 392-12-21 V1.5.1 (2012-04) as German standard)
Edition 2014-09