foiled unshielded twisted pair (F/UTP)
According to the ISO/ IEC nomenclature ISO/IEC-11801 (2002) for TP cables, Foiled Unshielded Twisted Pair (F/ UTP) stands for the former FTP cable. Since it was not clear from the designation Foiled Twisted Pair (FTP) whether the individual pairs of wires had a foil shield, or whether there was only one overall foil shield for all pairs of wires, the designation FTP cable was replaced by F/UTP cable.
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In F/UTP cable, the conductor strand also contains the uninsulated ground wire, drain wire. The F/UTP cable meets the specifications according to categoryCat 6A.