Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Signalling network layer for circuit-mode basic call control - Part 4: Test Suite Structure and Test Purposes (TSS&TP) specification for the user; English version ETS 300403-4:1997
Edition 1997-11

Design automation - Part 1: Standard test language for all systems - Common abbreviated test language for all systems (C/ATLAS) (IEC 61926-1:1999); German version EN 61926-1:2000
Edition 2000-11

Intelligent Network (IN) - Intelligent Network Capability Set 1 (CS1), Core Intelligent Network Application Protocol (INAP) - Part 1: Protocol specification; English Version ETS 300374-1:1994
Edition 1995-04

Building automation and control systems (BACS) - Part 5: Data communication protocol (ISO 16484-5:2017 + Amd 1:2020); English version EN ISO 16484-5:2017 + A1:2020, only on CD-ROM
Edition 2023-02

Extensions for Financial Services (XFS) interface specification - Part 1: Application Programming Interface (API): Service Provider Interface (SPI); programmer's reference; English version CWA 13449-1:1998
Edition 1999-03

European digital cellular telecommunications system (phase 2) - MultiParty (MPTY) supplementary services, stage 3; English version ETS 300568:1995
Edition 1995-08

Private Telecommunication Network (PTN); signalling protocol at the S-reference point; circuit mode basic services; English version ETS 300192:1992
Edition 1993-09

Space engineering - Interface requirements for electrical actuators; English version EN 16603-20-21:2020
Edition 2020-08

Integrated Services Digital Network (ISDN); attachment requirements for terminal equipment to connect to an ISDN using ISDN basic access; layer 3 aspects; english version ETS 300104:1991
Edition 1992-05

Aerospace series - Connector, electrical and optical, rectangular, modular, rectangular inserts, operating temperature 175 °C (or 125 °C) continuous - Part 001: Technical specification; German and English version EN 4644-001:2017
Edition 2018-02