Integrated Services Digital Network (ISDN); 3,1 kHz telephony teleservice; end-to-end compatibility requirements for telephony terminals; english version ETS 300082:1992
Edition 1992-06

Integrated Sevices Digital Network (ISDN); 3,1 kHz telephony teleservice; attachment requirements for handset terminals; english version ETS 300085:1990
Edition 1992-02

Power line communication systems for power utility applications - Part 2: Analogue power line carrier terminals or APLC (IEC 62488-2:2017); English version EN 62488-2:2017
Edition 2019-06

Electrical measuring transducers for converting AC and DC electrical quantities to analogue or digital signals (IEC 85/921/FDIS:2024); German and English version FprEN IEC 60688:2024
Edition 2025-02