Bounded/ Guided Transmission Media




The bounded transmission media is a physical connection in which signals are controlled to follow a particular channel from the origin to the destination. It is often said to use the cabling system in guiding the information signals across a particular route. The connection can be made by use of a coaxial cable, twisted pair cable, or a fiber-optic cable.




Twisted pair cable

The twisted pair cable is used commonly the fact that it is also affordable. The wires are twisted to form one end which transmits the active data signal while the other channeling the negative signals of information. They are opposite polarities meaning that any noise picked up by one of the wires will also appear on the other end.

The number of pairs is usually combined in a cable and is made of insulated copper wires. They are organized in a spiral pattern and the wires covered by their plastic insulation. The reason why the cable consists of twisted wires is that it reduces the electromagnetic interference from devices that create noise.


Coaxial cable

It is a transmission medium that conveys signals that have a higher frequency when compared to the twisted pair cable. It has a central core conductor comprised of a standard wire that is covered by a sheath. It has a metallic wrapping on the outer surface which completes the circuit by acting as the second conductor and a shield.

 A plastic insulator covers the entire metallic part of the coaxial cable offering another layer of protection. The inner conductor is maintained in its position by the insulating rings which are regularly spaced. The coaxial cable is usually efficient and can be used for longer distances. Unlike the twisted pair, this transmission medium manages various stations that are located on a shared line.


Fiber optic cable

It is a guided transmission medium which transmits network signals by use of light. It is a glass cabling media with a higher capacity of bandwidth when compared to wiring by copper. The Fiber optic cable is useful in connections that are related to workstations with a high performance and long cable runs.




It utilizes light which is a form of electromagnetic energy and travels at a faster rate in a vacuum. The density of the medium determines the speed of light, which means that a higher frequency will generate a lower speed. The fiber optic cables are usually lighter compared to copper cabling. They are reliable and can transmit signals over long distances the fact that it has a less signal attenuation.