VHF air-ground Digital Link (VDL) Mode 2 - Technical characteristics and methods of measurement for ground-based equipment - Part 1: Physical layer and MAC sub-layer (Endorsement of the English version EN 301 841-1 V.1.4.1 (2015-04) as German standard)
Edition 2015-10

Integrated Services Digital Network (ISDN); CCITT signalling system no. 7; Transaction Capabilities Application Part (TCAP); English version ETS 300134:1992
Edition 1993-07

Broadband Integrated Services Digital Network (B-ISDN) - B-ISDN Protocol Reference Model (PRM); English version ETS 300354:1995
Edition 1996-04

Broadband Integrated Services Digital Network (B-ISDN) - Asynchronous Transfer Mode (ATM) - Adaptation Layer (AAL) specifications; type 5; English version ETS 300428:1995
Edition 1996-04

Electricity metering - Data exchange for meter reading, tariff and load control - Part 46: Data link layer using HDLC-protocol (IEC 62056-46:2002 + A1:2006); German version EN 62056-46:2002 + A1:2007, text in English
Edition 2007-08

Integrated Services Digital Network (ISDN) - Overall network aspects and functions - Frame Relaying Service Specific Convergence Sublayer (FR-SSCS) (ITU-T I.365.1:1993); English version ETS 300643:1996
Edition 1996-12

Broadband Integrated Services Digital Network (B-ISDN) - Asynchronous Transfer Mode (ATM) Adaptation Layer (AAL) specification; type 3/4; English version ETS 300349:1995
Edition 1995-11

Broadband Radio Access Networks (BRAN) - HIPERLAN Type 2; Conformance testing for the Data Link Control (DLC) protocol - Part 2: Radio Link Control (RLC) sublayer; Sub-part 2-1: Protocol Implementation Conformance Statement (PICS) proforma (Endorsement of the English version EN 301823-2-1 V 1.1.1 (2001-01) as German Standard)
Edition 2001-12

Broadband Radio Access Networks (BRAN) - HIPERLAN Type 2; Conformance testing for the Data Link Control (DLC) protocol - Part 2: Radio Link Control (RLC) sublayer; Sub-part 2: Test Suite Structure and Test Purposes (TSS&TP) specification (Endorsement of the English version EN 301823-2-2 V 1.1.1 (2001-01) as German Standard)
Edition 2001-12

Broadband Radio Access Networks (BRAN) - HIPERLAN Type 2; Conformance testing for the Data Link Control (DLC) protocol - Part 2: Radio Link Control (RLC) sublayer; Sub-part 3: Abstract Test Suite (ATS) specification (Endorsement of the English version EN 301823-2-3 V 1.1.1 (2001-01) as German Standard)
Edition 2001-12