![]() ![]() Shielding each pair of a twisted-pair cable can eliminate most crosstalk. This effect can be experienced during telephone conversations when one can hear other conversations in the background. ![]() It occurs when one line (acting as a kind of receiving antenna) picks up some of the signals travelling down another line (acting as a kind of sending antenna). It also can eradicate a phenomenon called crosstalk, which is the unwanted effect of one circuit (or channel) on another circuit (or channel). The metal casing intercepts the penetration of electromagnetic noise. Shielded twisted-pair (STP) cable has an additional braided mesh coating or metal foil that wraps each set of insulated conductors. The noise here we are talking about is generated when two wires are parallel which causes an increase in voltage level in the wire closest to the source and also uneven load and damaged signal. The two wires are twisted in the twisted pair cable which significantly reduces the noise generated by the external source. In addition, colors also identify the specific conductors in a cable and to indicate which wires belong in pairs and how they relate to other pairs in a larger bundle. Color bands are used in plastic insulation for identification. Therefore, these are most commonly used in telephone systems.Ī twisted pair consists of two insulated conductors (usually copper) in a twisted configuration. Its frequency range is suitable for transmitting both data and voice. Unshielded twisted-pair (UTP) cable is the most prevalent type of telecommunication medium in use today. Installation of cables is difficult comparatively.Ĭheaper and does not require much maintenance. ![]() STP (Shielded twisted pair) is a twisted pair cable enclosed in foil or mesh shield.Įasily installed as cables are smaller, lighter, and flexible. UTP (Unshielded twisted pair) is a cable with wires that are twisted together. On the contrary, STP (Shielded twisted pair) is a twisted pair cable confined in foil or mesh shield that guards the cable against electromagnetic interference. The basic difference between UTP and STP is UTP (Unshielded twisted pair) is a cable with wires that are twisted together to reduce noise and crosstalk. ![]()
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