V-interfaces at the digital Local Exchange (LE) - V5.1 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 300324-8 V 2.1.1. (2000-05) as German standard)
Edition 2001-05

V interfaces at the digital Local Exchange (LE) - V5.1 interface for the support of Access Network (AN) - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer (LE side) (Endorsement of the English version EN 300324-5 V 3.1.1 (2001-03) as German standard)
Edition 2001-12

V interfaces at the digital Local Exchange (LE) - V5.1 interface for the support of Access Network (AN) - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer (AN side) (Endorsement of the English version EN 300324-3 V 3.1.1 (2001-03) as German standard)
Edition 2001-12

Integrated Services Digital Network (ISDN) - Generic functional protocol for the support of supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 300196-1 V 1.3.2 (2001-06) as German Standard)
Edition 2002-03

Intelligent Network (IN) - Intelligent Network Capability Set 1 (CS1) extension; Intelligent Network Application Protocol (INAP) - Part 1: Protocol specification for Camel Phase 2 (Endorsement of the English version EN 301668-1 V 1.1.3 (2000-07) as German Standard)
Edition 2001-09

Intelligent Network (IN) - Intelligent Network Capability Set 1 (CS1) extension; Intelligent Network Application Protocol (INAP) - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 301668-2 V 1.1.3 (2000-07) as German Standard)
Edition 2001-09

Telecommunications Management Network (TMN) - Functional specification of Customer Administration (CA) on the Operations System/Network Element (OS/NE) interface - Part 2: Multi line configurations (Endorsement of the English version EN 300291-2 V 1.1.1 (2002-03) as German Standard)
Edition 2002-11

Telecommunications Management Network (TMN) - Functional specification of Customer Administration (CA) on the Operations System/Network Element (OS/NE) interface - Part 1: Single line configurations (Endorsement of the English version EN 300291-1 V 1.2.1 (1999-02) as German Standard)
Edition 1999-12

Integrated Services Digital Network (ISDN) - Security tools (SET) procedures; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 301002-1 V 1.3.1 (2001-06) as German Standard)
Edition 2002-11

Communication network dependability engineering (IEC 61907:2009); German version EN 61907:2010
Edition 2010-09