The terms UTP, FTP and STP refer to the types of shielding around a network or Ethernet cable.
- U/UTP or UTP is completely unshielded
- F/UTP or FTP has only an overall foil shield
- S/UTP or STP has only an overall braided shield
additionally, there are versions that offer extra screening around the individual pairs of twisted cables such as
- F/FTP which has a foil shield around the outer and around each pair
- S/FTP which has an overall braid and foil around the pairs
- U/FTP which has a foil shield around the pairs but no overall shield
- SF/UTP which has a braid and a foil overall shield but shield around the pairs
