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Screenedunshieldedtwistedpair(S/UTP)

AlsoknownasFullyshielded(orFoiled)TwistedPair(FTP),isascreenedUTPcable

(ScTP).



Shieldedtwistedpair(STPorSTP‐A)

STPcablingincludesmetalshieldingovereachindividualpairofcopperwires.This

typeofshieldingprotectscablefrom

externalEMI(electromagneticinterferences).

e.g.the150ohmshieldedtwistedpaircablesdefinedbytheIBMCablingSystem

specificationsandusedwithtokenringnetworks.



Screenedshieldedtwistedpair(S/STPorS/FTP)

S/STPcabling,alsoknownasScreenedFullyshieldedTwistedPair(S/FTP),

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isboth

individuallyshielded(likeSTPcabling)andalsohasanoutermetalshieldingcovering

theentiregroupofshieldedcopperpairs(likeS/UTP).Thistypeofcablingoffersthe

bestprotectionfrominterferencefromexternalsources,andalsoeliminatesalien

crosstalk.



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