Integrated Services Digital Network (ISDN) - Narrowband Multi-service Delivery System (NMDS) - Part 4: Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer (NTN side) (Endorsement of the English version EN 301141-4 V 1.1.1 (2002-02) as German Standard)
Edition 2002-11

Intelligent Network (IN) - Intelligent Network Capability Set 3 (CS3); Intelligent Network Application Protocol (INAP); Test Suite Structure and Test Purposes (TSS&TP) specification for Service Switching Function (SSF) - Part 2: Call Party Handling (CPH) (Endorsement of the English version EN 301933-2 V 1.1.1 (2003-01) as German Standard)
Edition 2003-07

Intelligent Network (IN) - Intelligent Network Capability Set 3 (CS3); Intelligent Network Application Protocol (INAP); Test Suite Structure and Test Purposes (TSS&TP) specification for Service Switching Function (SSF) - Part 3: Specialized Resource Functions (SRF) (Endorsement of the English version EN 301933-3 V 1.1.1 (2003-01) as German standard)
Edition 2003-07

Intelligent Network (IN) - Intelligent Network Capability Set 3 (CS3); Intelligent Network Application Protocol (INAP); Test Suite Structure and Test Purposes (TSS&TP) specification for Service Switching Function (SSF) - Part 1: Basic capability set of CS3 (Endorsement of the English version EN 301933-1 V 1.1.1 (2003-01) as German Standard)
Edition 2003-07

V interfaces at the digital Local Exchange (LE) - V5.1 interface for the support of Access Network (AN) - Part 7: Test Suite Structure and Test Purposes (TSS&TP) specification for the data link layer as German standard) (Endorsement of the English version ETS 300324-7:1999 as German standard)
Edition 2000-10

Integrated Services Digital Network (ISDN) - Conference call, add-on (CONF) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network (Endorsement of the English version EN 300185-5 V 1.2.4 (1998-06) as German standard)
Edition 2000-01

Integrated Services Digital Network (ISDN) - Supplementary service interactions; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network (Endorsement of the English version EN 300195-5 V 1.3.3 (2000-05) as German standard)
Edition 2000-10

Integrated Services Digital Network (ISDN) - Signalling System No. 7; ISDN User Part (ISUP) version 2 for the international interface - Part 35: Test Suite Structure and Test Purposes (TSS&TP) specification for supplementary services (Endorsement of the English version EN 300356-35 V 3.1.2 (2000-09) as German standard)
Edition 2001-09

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

Integrated Services Digital Network (ISDN) - Three-Party (3PTY) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user (Endorsement of the English version EN 300188-3 V 1.2.4 (1998-06) as German standard)
Edition 2000-01