Transmission medium is the physical path between the transmitter and receiver. Factors to Select Transmission Media Ø Data Rate and Bandwidth Ø Distance and Attenuation Ø Interference Characteristics Ø Number of receivers Ø Cost - Remember cabling is a long term investment! Guided Media Sub-types Ø Unshielded Twisted Pair (UTP) Cable Ø Shielded Twisted Pair (STP) Cable Ø Coaxial Cable Ø Fiber Optic Cable Un-guided Media Sub-types Ø Terrestrial microwave transmission Ø Satellite transmission Ø Broadcast radio Ø Infrared Twisted Pair Wires Ø Consists of two insulated copper wires arranged in a regular spiral pattern to minimize the electromagnetic interference between adjacent pairs Ø Often used at customer facilities and also over distances to carry voice as well as data communications Ø Low frequency transmission medium Twisted...