Advantages of STP | disadvantages of STP
This page covers advantages and disadvantages of STP. It mentions STP advantages or benefits and STP disadvantages or drawbacks. STP stands for Shielded Twisted Pair.
What is STP?
• It is one of the type of twisted pair cable, the other type is UTP (Unshielded Twisted Pair).
• It is similar to UTP in which wire pairs are twisted around each other. In addition, it has shielding around the cable to protect it from external interference. Here shield functions as ground.
• It combines techniques of shielding, cancellation and wire twisting.
• Each pair of wires is wrapped in a metallic foil. The four pairs of wires are wrapped in an overall metallic foil usually 150 Ohm cable.
• STP cable reduces electrical noise within the cable and from outside of the cable (e.g. EMI, RFI).
• It supports maximum segment of length about 100 meters.
• It offers speed or throughput of about 10 to 100 Mbps.
• Media and connector size: Medium to large
• Average cost per node: moderately expensive
Benefits or advantages of STP
Following are the benefits or advantages of STP:
➨Shielding reduces chance of crosstalk and provide protection from interference.
➨It offers better electrical characteristics than unshielded cables.
➨It can be easily terminated with modular connector.
Drawbacks or disadvantages of STP
Following are the drawbacks or disadvantages of STP:
➨Shielding increases overall diameter and weight of the cable. Hence it is more difficult to install compare to UTP cables. The larger thickness make them unfit for narrow cable ducts.
➨It has higher cost per foot of wire.
➨Shield of STP cables must be grounded properly otherwise it acts like an antenna and picks up unwanted signals.
➨There is no improvement in segment length despite its thick and heavier construction.
Also refer advantages and disadvantages of UTP cable >>.