In networking, cable interference can refer to signaldisruptions or degradations caused by electrical or electromagnetic sources.
Crosstalk is a type of interference where signals bleed into one another as
they move along individual wires inside a cable, such as the adjacent wires
within twisted-pair cabling. The interference between one unshielded twisted
pair and another can degrade data and signal transmissions. Unshielded
Twisted Pair (UTP) cables are more prone to the signals from their lines
interfering with each other. Compared to UTP, Shielded Twisted Pair cable
provides additional safeguards against interference. With greater cable
interference protection, higher transmission rates over longer distances can
be supported.

Cat5e Interference Specifications

In contrast to Cat5, enhanced Category 5 cable features improved
crosstalk specifications. However, Cat5e interference
specifications are not as stringent as those for Cat 6 and 6a cable. The
latter cables work well in environments where external interference may be
an issue. The term alien crosstalk refers to the type of cabling
interference where one cable affects other nearby cables within a bundle.
Closely routed cables can create alien crosstalk in Cat5e or other cable
categories. Disruptions also occur due to the introduction of
Electromagnetic Interference (EMI) into a cable from an external source,
such as a device. Both EMI and crosstalk can be factors in attenuation or
signal loss in network
cabling
.

Cat6 and Cat6a Crosstalk Reductions

Beneficial Cat6 and 6a crosstalk reduction is due to
tight twisting and added insulation, with Cat6a reducing crosstalk even more
than its predecessor. The Cat6 cable standard resists crosstalk to a higher
degree than Category 5e cable.
Reduced alien crosstalk interference on a 10GBASE-T network contributes to
enhanced performance.

Related Links

Network Cables
Patchcord Cable

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