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Shielded Cabling: Eliminates alien crosstalk so field testing is never required

alien crosstalk

Alien crosstalk is defined as: Unwanted signal coupling from one balanced twisted-pair component, channel, or permanent link to another. (I.E: Cable-to-cable interference)

AXT is seen at higher frequencies such as 10GBASE-T and is more problematic in unshielded (UTP) systems. The noise coupling occurs on like pairs (for instance blue-white to blue-white) as they will have roughly the same twist lay.

This is not a concern with screened or shielded systems as the shield prevents alien crosstalk from affecting adjacent cables.

STANDARDS GUIDE: Guide to Alien Crosstalk in Network Cabling Systems

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