V interfaces at the digital Local Exchange (LE) - V5.2 interface for the support of Access Network (AN) - Part 8: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the data link layer (Endorsement of the English version EN 300347-8  V 2.1.2 (2000-06) as German standard)
Edition 2001-05

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7) - ISDN User Part (ISUP) version 4 for the international interface - Part 33: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for basic services (Endorsement of the English version EN 300356-33 V4.1.1 (2003-07) as German standard)
Edition 2004-07

Integrated Services Digital Network (ISDN); Signalling System No. 7 (SS7) - ISDN User Part (ISUP) version 3 for the International interface - Part 36: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for supplementary services (Endorsement of the English version EN 300356-36 V 3.3.1 (2003-01) as German standard)
Edition 2003-11

Integrated Services Digital Network (ISDN) - Completion of Calls to Busy Subscriber (CCBS) 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 300359-4 V 1.4.1 (2001-11) as German Standard)
Edition 2002-11

Integrated Services Digital Network (ISDN) - Completion of Calls to Busy Subscriber (CCBS) supplementary service; 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 300359-6 V 1.4.1 (2001-11) as German Standard)
Edition 2002-11

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol; Explicit Call Transfer (ECT) supplementary service - 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 300369-4 V 1.3.1 (2002-05) as German Standard)
Edition 2002-12

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol; Explicit Call Transfer (ECT) 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 300369-6 V 1.5.1 (2002-05) as German Standard)
Edition 2002-12

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the Inter-System Interface (ISI) - Sub-part 2: Additional Network Feature Individual Call (ANF-ISIIC) (Endorsement of the English version EN 300392-3-2 V1.4.1 (2010-08) as German standard)
Edition 2011-04

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the Inter-System Interface (ISI) - Sub-part 3: Additional Network Feature Group Call (ANF-ISIGC) (Endorsement of the English version EN 300 392-3-3 V1.4.1 (2017-12) as German standard)
Edition 2018-04

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 3: Interworking at the Inter-System Interface (ISI) - Sub-part 4: Additional Network Feature Short Data Service (ANF-ISISDS) (Endorsement of the English version EN 300392-3-4 V1.3.1 (2010-08) as German standard)
Edition 2011-04