Telecommunications Management Network (TMN) - Functional specification of Customer Administration (CA) on the Operations System/Network Element (OS/NE) interface - Part 2: Multi line configurations (incl. Diskette!!!)
Edition 2002-05-01

Telecommunications Multiline Terminal Systems Requirements for PBX Switching Equipment, Addendum 1
Edition 2004-06

Telecommunications Multiline Terminal Systems North American Test Plan for Multivendor QSIG Interoperability Testing
Edition 2006-01

Telecommunications Multiline Terminal Systems Synchronous Methods and Technical Requirements for Private Integrated Services Networks
Edition 2004-03-18

Telecommunications Multiline Terminal Systems PBX and KTS Support of Enhanced 9-1-1 Emergency Calling Service
Edition 2003-03-28

Quantities used in alternating current theory - Part 2: Multi-line circuits
Edition 2002-11

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

Dedicated radionuclide imaging devices - Characteristics and test conditions - Part 1: Cardiac SPECT (IEC 63073-1:2020); German version EN IEC 63073-1:2020
Edition 2021-09

Methods of measurement for equipment used in terrestrial radio-relay systems; measurements for sub-systems; stand-by channel switching equipment; identical with IEC 60487-2-2, edition 1981
Edition 1987-03