Telecommunications Management Network (TMN) - Performance monitoring for Plesiochronous Digital Hierarchy (PDH) interfaces - Information model for the Network Element (NE) view (Endorsement of the English version EN 301384 V 1.1.2 (2001-02) as German standard)
Edition 2001-12

Integrated Services Digital Network (ISDN) - Definition and usage of cause and location in Digital Subscriber Signalling System No. one (DSS1) and Signalling System No. 7 (SS7) ISDN User Part (ISUP) (ITU-T Recommendation Q.850 (1998) with addendum, modified) (Endorsement of the English version EN 300485 V 1.3.1 (2001-04) as German standard)
Edition 2001-12

Access and Terminals (AT) - 2048 kbit/s digital unstructured leased line (D2048U) - Connection characteristics (Endorsement of the English version EN 300247 V 1.2.1 (2001-07) as German version)
Edition 2002-01

Accesss and Terminals (AT) - 64 kbit/s digital unrestricted leased line with octet integrity (D64U) - Network interface presentation (Endorsement of the English version EN 300288 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01

Access and Terminals (AT) - 2048 kbit/s digital unstructured leased line (D2048U) - Terminal equipment interface (Endorsement of the English version EN 300248 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01

Access and Terminals (AT) - 64 kbit/s digital unrestricted leased line with octet integrity (D64U) - Connection characteristics (Endorsement of the English version EN 300289 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01

Access and Terminal (AT) - 64 kbit/s digital unrestricted leased line with octet integrity (D64U) - Terminal equipment interface (Endorsement of the English version EN 300290 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01

Access and Terminals (AT) - 2048 kbit/s digital unstructured and structured leased lines (D2048U and D2048S) - Network interface presentation (Endorsement of the English version EN 300418 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01

Access and Terminals (AT) - 2048 kbit/s digital structured leased lines (D2048S) - Connection characteristics (Endorsement of the English version EN 300419 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01

Access and Terminals (AT) - 2048 kbit/s digital structured leased lines (D2048S) - Terminal equipment interface (Endorsement of the English version EN 300420 V 1.2.1 (2001-07) as German Standard)
Edition 2002-01