Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol; Closed User Group (CUG) supplementary service - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network (Endorsement of the English version EN 300138-6 V 1.5.1 (2002-04) as German Standard)
Edition 2002-12

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol; Closed User Group (CUG) supplementary service - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network (Endorsement of the English version EN 300138-5 V 3.1.1 (2002-04) as German standard)
Edition 2002-12

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; Connection characteristics; ATM transfer capability and traffic parameter indication - 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 301068-4 V 1.2.1 (2002-08) as German standard)
Edition 2003-08

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; Connection characteristics; ATM transfer capability and traffic parameter indication - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network (Endorsement of the English version EN 301068-5 V 1.2.1 (2002-08) as German standard)
Edition 2003-08

Integrated Services Digital Network (ISDN); Diversion supplementary services - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network (Endorsement of the English version EN 300207-6 V 3.2.1 (2003-01) as German standard)
Edition 2003-11

Fibre optic interconnecting devices and passive components performance standard - Part 101-2: Fibre management systems for category C - Controlled environment (IEC 61753-101-2:2006); German version EN 61753-101-2:2006
Edition 2007-06

European Ordering Rules - Ordering of characters from Latin, Greek, Cyrillic, Georgian and Armenian scripts; German version EN 13710:2011
Edition 2011-06

Fibre optic interconnecting devices and passive components - Performance standard - Part 1: General and guidance (IEC 61753-1:2018/A1:2020); German version EN IEC 61753-1:2018/A1:2020
Edition 2021-11

Fibre optic interconnecting devices and passive components - Performance standard - Part 1: General and guidance (IEC 61753-1:2018 + COR1:2019); German version EN IEC 61753-1:2018 + AC:2019
Edition 2019-10

Fibre optic interconnecting devices and passive components - Performance standard - Part 087-6: Non-connectorised single-mode bidirectional 1 310 nm upstream and 1 490 nm downstream WWDM devices for category O - Uncontrolled environment (IEC 61753-087-6:2012); German version EN 61753-087-6:2012
Edition 2012-12