Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI); Test Case Library (TCL) - Part 5: Abstract Test Suite (ATS); Data Link Control (DLC) layer (Endorsement of the English version EN 300497-5 V 0.3.0 (1999-10) as German standard)
Edition 2000-07

Integrated Services Digital Network (ISDN) - Narrowband Multi-service Delivery System (NMDS) - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the data link layer (NTN side) (Endorsement of the English version EN 301141-3 V 1.1.1 (2002-02) as German Standard)
Edition 2002-11

Digital Enhanced Cordless Telecommunications (DECT) - DECT Packet Radio Service (DPRS) Test Case Library (TCL) - Part 4: Test Suite Structure (TSS) and Test Purposes (TP); Data Link Control (DLC) layer (Endorsement of the English version EN 301469-4 V 1.1.1 (2000-10) as German standard)
Edition 2002-05

Digital Enhanced Cordless Telecommunications (DECT) - DECT Packet Radio Service (DPRS) Test Case Library (TCL) - Part 5: Abstract Test Suite (ATS); Data Link Control (DLC) layer; Portable radio Termination (PT) (Endorsement of the English version EN 301469-5 V 1.1.1 (2000-10) as German standard)
Edition 2002-05

Digital Enhanced Cordless Telecommunications (DECT) - DECT Packet Radio Service (DPRS) Test Case Library (TCL) - Part 6: Abstract Test Suite (ATS); Data Link Control (DLC) layer; Fixed radio Termination (FT) (Endorsement of the English version EN 301469-6 V 1.1.1 (2000-10) as German standard)
Edition 2002-05

VHF air-ground Digital Link (VDL) Mode 4 radio equipment - Technical characteristics and methods of measurement for ground-based equipment - Part 2: General description and data link layer (Endorsement of the English version EN 301 842-2 V1.7.1 (2015-04) as German standard)
Edition 2015-10

VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment - Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment - Part 2: General description and data link layer (Endorsement of the English version EN 302 842-2 V1.4.1 (2015-04) as German standard)
Edition 2015-10

V interfaces at the digital Local Exchange (LE) - V5.1 interface for the support of Access Network (AN) - Part 7: Test Suite Structure and Test Purposes (TSS&TP) specification for the data link layer as German standard) (Endorsement of the English version ETS 300324-7:1999 as German standard)
Edition 2000-10

V interfaces at the digital Local Exchange (LE) - V5.2 interface for the support of Access Network (AN) - Part 7: Test Suite Structure and Test Purposes (TSS&TP) specification for the data link layer (Endorsement of the English version ETS 300347-7:1999 as German standard)
Edition 2000-10

Distribution automation using distribution line carrier systems - Part 4: Data communication protocols - Section 32: Data link layer - Logical link control (LLC)
Edition 1997-06-25