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

Integrated Services Digital Network (ISDN) - Narrowband Multi-service Delivery System (NMDS) - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer (LE side) (Endorsement of the English version EN 301141-5 V 1.1.1 (2002-02) as German Standard)
Edition 2002-11

Digital Enhanced Cordless Telecommunications (DECT) - DECT Packet Radio Service (DPRS) Test Case Library (TCL) - Part 7: Test Suite Structure (TSS) and Test Purposes (TP) for Network (NWK) layer (Endorsement of the English version EN 301469-7 V 1.1.1 (2000-10) as German standard)
Edition 2002-05

Digital Enhanced Cordless Telecommunications (DECT) - DECT Packet Radio Service (DPRS) Test Case Library (TCL) - Part 8: Abstract Test Suite (ATS); Network (NWK) layer; Portable radio Termination (PT) (Endorsement of the English version EN 301469-8 V 1.1.1 (2000-10) as German standard)
Edition 2002-05

Digital Enhanced Cordless Telecommunications (DECT) - DECT Packet Radio Service (DPRS) Test Case Library (TCL) - Part 9: Abstract Test Suite (ATS); Network (NWK) layer; Fixed radio Termination (FT) (Endorsement of the English version EN 301469-9 V 1.1.1 (2000-10) as German standard)
Edition 2002-05

Terrestrial Trunked Radio (TETRA) - Conformance testing specification - Part 2: Protocol testing specification for Voice plus Data (V+D); Sub-part 2: Abstract Test Suite (ATS) for Network (NWK) layer (Endorsement of the English version ETS 300394-2-2:1998 as German standard)
Edition 1999-07

Open systems interconnection; internal organization of the network layer; identical with ISO 8648:1988
Edition 1990-07

Information processing systems; open systems interconnection; internal organization of the network layer
Edition 1988-02

Information processing systems; Open Systems Interconnection; internal organization of the network layer; technical corrigendum 1
Edition 1991-03

Information technology - Telecommunications and information exchange between systems - X.25 DTE conformance testing - Part 3: Packet layer conformance test suite
Edition 2000-04