European digital cellular telecommunications system (Phase 2) - Base Station Controller - Base Transceiver Station (BSC-BTS) interface - Layer 2 specification; English version ETS 300595:1994
Edition 1995-02

Industrial communication networks - Fieldbus specifications - Part 3-25: Data-link layer service definition - Type 25 elements (IEC 61158-3-25:2019); English version EN IEC 61158-3-25:2019, only on CD-ROM
Edition 2020-06

Electricity metering - Data exchange for meter reading, tariff and load control - Part 42: Physical layer services and procedures for connection-oriented asynchronous data exchange (IEC 62056-42:2002); German version EN 62056-42:2002, text in English
Edition 2003-01

Industrial communication networks - Fieldbus specifications - Part 4-11: Data-link layer protocol specification - Type 11 elements (IEC 61158-4-11:2014); English version EN 61158-4-11:2014, only on CD-ROM
Edition 2015-09

Integrated Services Digital Network (ISDN) - Primary rate User-Network Interface (UNI) - Part 3: Implementation Conformance Statement (ICS) and Implementation eXtra Information for Testing (IXIT) proforma specification for interface IA and IB; English version ETS 300011-3:1998
Edition 1998-12

Digital Enhanced Cordless Telecommunications (DECT) - Integrated Services Digital Network (ISDN) interworking for end system configuration; profile Implementation Conformance Statement (ICS) - Part 1: Portable radio termination (PT); English Version ETS 300705-1:1997
Edition 1998-07

Industrial communication networks - Fieldbus specifications - Part 4-25: Data-link layer protocol specification - Type 25 elements (IEC 61158-4-25:2019); English version EN IEC 61158-4-25:2019, only on CD-ROM
Edition 2020-08

Industrial communication networks - Fieldbus specifications - Part 4-17: Data-link layer protocol specification - Type 17 elements (IEC 61158-4-17:2007); English version EN 61158-4-17:2008, only on CD-ROM
Edition 2008-09

Industrial communication networks - Fieldbus specifications - Part 3-2: Data-link layer service definition - Type 2 elements (IEC 61158-3-2:2014 + Amd 1:2019); English version EN 61158-3-2:2014 + A1:2019, only on CD-ROM
Edition 2020-06

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Data link layer - Part 3: Frame relay protocol specification; English version ETS 300402-3:1996
Edition 1997-04