Twisted-Pair Wire - This is the most used medium for telecommunications. Twisted pair cables are standard telephone cables, which consist of two insulated copper wires twisted in pairs and are used to perform loud, and data transmission. Using two wires to help Crosstalk and electromagnetic induction to reduce. The size of the transmission rate of 2 million bits per second to 100 million bits per second.
Coax Cable - These cables are widely used for cable-TV systems, offices and other workplaces for LANs. Cable consists of copper or aluminum wire wrapped with an insulating layer is generally a flexible material with a high dielectric constant, which are all surrounded by a conductive layer. Layers of insulation help minimize interference and distortion. Transmission speeds range from 200 million to more than 500 million bits per second.
Fiber Optics - These cables consist of one or more thin filaments of glass encased in a protective layer. He emitted light that can travel long distances and higher speeds. Fiber-optic cables are not affected by electromagnetic radiation. Higher transmission speeds can reach one billion bits per second. The speed of fiber is hundreds of times faster than the coaxial cable and a thousand times faster than twisted pair telephone
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