Integrated Services Digital Network (ISDN); Message Waiting Indication (MWI) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (Endorsement of the English version EN 300745-4 V 1.3.2 (1999-11) as German standard)
Edition 2000-12

Integrated Services Digital Network (ISDN) - Freephone (FPH) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (Endorsement of the English version EN 300210-4 V 1.2.4 (1998-12) as German Standard)
Edition 2000-05

Integrated Services Digital Network (ISDN) - Malicious Call Identification (MCID) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (Endorsement of the English version EN 300130-4 V 1.3.2 (2000-06) as German standard)
Edition 2000-12

Broadband Integrated Services Digital Network (B-ISDN) - Signalling System No. 7; B-ISDN User Part (B-ISUP) - Part 4: Look-ahead without state change for the network node interface [ITU-T Recommendation Q.2724.1 (1996)] (Endorsement of the English version EN 301029-4 V 1.2.1 (1998-04) as German standard)
Edition 1999-09

Aerospace series - Test method for metallic materials - Ultrasonic inspection of bars, plates, forging stock and forgings - Part 4: Acceptance criteria; German and English version EN 4050-4:2012
Edition 2012-12

Fixed resistors for use in electronic equipment - Part 4: Sectional specification: Fixed power resistors (IEC 40/2693/CD:2019); Text in German and English
Edition 2020-04

V interfaces at the digital Service Node (SN) - Interfaces at the VB5.1 reference point for the support of broadband or combined narrowband and broadband Access Networks (ANs) - Part 4: Abstract Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification (Endorsement of the English version EN 301005-4 V 1.1.2 (2000-05) as German Standard)
Edition 2000-10

Sterilization of health care products - Biological indicators - Part 4: Biological indicators for dry heat sterilization processes (ISO 11138-4:2017); German version EN ISO 11138-4:2017
Edition 2017-07

Influence of materials on water intended for human consumption - Influence due to migration - Part 4: Test method for water treatment membranes; German version EN 12873-4:2021
Edition 2022-01

Railway applications - Classification system for railway vehicles - Part 4: Function groups; German version EN 15380-4:2013
Edition 2013-05