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STP cables are often used in situations nearby equipment causing EMI (Electro-Magnetic Interference). Twisting cancels out inductive coupling, while the shield eliminates capacitive coupling. STP cable is used to eliminate inductive and capacitive coupling. The additional shielding in the STP cable stops electromagnetic interference from leaking out of or into the cable. STP contains an extra foil wrapping or copper braid jacket to help shield the cable signals from interference. So if the interference or crosstalk is not your main concern, it is suggested to choose UTP cable for saving your cabling cost. UTP cables are suitable for offices and homes. Each pair is twisted with a different number of twists per inch to help eliminate interference from adjacent pairs and other electrical devices. The cable has four pairs of wires inside the jacket. UTP consists of color-coded copper wires but does not include any foil or braiding as an insulator to protect against interference. Two common types of twisted pairs are - unshielded twisted pair and shielded twisted pair. U/FTP cable which is individually foil shielded pairs without over all foil shield.A twisted pair cable is a widely used cable for transmitting data and information over certain distances. S/FTP cable which incorporates a combination of both a foil shield and an overlapped braided shield.į/FTP cable which is individually foil pairs and over all foil shield The other two types are UTP cable, where the twisted pairs are unshielded, and STP cable with twisted pairs screened with a braid. UTP Cable and STP CableįTP cable also known as F/UTP cabling is one of the three main types of twisted pair wiring. Twisting the cores together and covering with the foil shield helps to reduce cross–talk and electromagnetic interference. The cables are designed and constructed with a twisted pair or multiple twisted pairs of cores with an overall foil tape shield wound around the assembly. FTP networking cables often support Ethernet LAN. The term FTP stands for foil twisted pairs.