专家解读视频
Describes the basic requirements for the planning, implementation and operation of information technology cabling using balanced copper cabling and optical fibre cabling. Also applies cabling systems designed and intended to support a wide range of telecommunications services and to support particular analogue and digital telecommunications services including voice services.
NEN EN 50174-2:2009 - Identical
SN EN 50174-2:2009 - Identical
NF EN 50174-2:2009 - Identical
NEN EN 50174-2:2000 - Identical
SS EN 50174-2 Ed. 1 (2001) - Identical
UNE EN 50174-2:2001 - Identical
I.S. EN 50174-2:2001 - Identical
NF EN 50174-2:2001 - Identical
DIN EN 50174-2 (2001-09) - Identical
BS EN 50174-2:2001 - Identical
SN EN 50174-2:2000 - Identical
