Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 11: Supplementary services stage 2 - Sub-part 16: Pre-emptive Priority Call (PPC) (Endorsement of the English version EN 300392-11-16 V1.2.1 (2004-09) as German standard)
Edition 2005-04

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3 - Sub-part 16: Pre-emptive Priority Call (PPC) (Endorsement of the English version EN 300392-12-16 V1.2.1 (2004-09) as German standard)
Edition 2005-04

Terrestrial Trunked Radio (TETRA) - Subscriber Identity Module to Mobile Equipment (SIM-ME) interface - Part 3: Integrated Circuit (IC) - Physical, logical and TSIM application characteristics (Endorsement of the English version EN 300812-3 V2.3.1 (2005-12) as German standard)
Edition 2006-11

Digital Enhanced Cordless Telecommunications (DECT) - Cordless Terminal Mobility (CTM); CTM Access Profile (CAP); profile Test Specification (PTS) - Part 1: Summary (Endorsement of the English version EN 301371-1 V 0.0.1 (1999-09) as German standard)
Edition 2000-07

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 11: Supplementary services stage 2; Sub-part  23: Call Completion on No Reply (CCNR) (Endorsement of the English version ETS 300392-11-23:2000 as German standard)
Edition 2000-12

Digital cellular telecommunications system (Phase 2) - Base Station System - Mobile-services Switching Center (BSS-MSC) interface; Interface principles (Endorsement of the English version ETS 300587-2:1995 as German standard)
Edition 2000-12

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 4: Gateways basic operation; Sub-part 4-2: Integrated Services Digital Network (ISDN) gateway (Endorsement of the English version ETS 300392-4-2:2000-09 as German Standard)
Edition 2001-07

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 11: Supplementary services stage 2; Sub-part 11-24: Call Retention (CRT) (Endorsement of the English version ETS 300392-11-24:2000-09 as German standard)
Edition 2001-08

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3; Sub-part 12-24: Call Retention (CRT) (Endorsement of the English version ETS 300392-12-24:2000-09 as German Standard)
Edition 2001-08

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 11: Supplement services stage 2; Sub-part 10: Priority call (PC) (Endorsement of the English version EN 300392-11-10 V 1.1.1 (2001-05) as German Standard)
Edition 2002-03