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Reading 2: Communications media This reading covers material within the following unit performance criteria: Check and install cabling and associated components in accordance with industry standards.. The terms, communications or networking media refer to the physical media used to transmit data through your network. As you may recall, the physical media of a network resides at the lowest level of the Open Systems Interconnection (OSI) networking model. What are the most common types? The most common type of communication medium in networks today is cabling (bound transmission media). As advances are made, the types of cables used have changed and wireless technologies are removing the need for cables altogether. Common media used in networks include: UTP (Unshielded Twisted Pair) - category 5, 5e, and 6 RJ45 and RJ11 connectors Category 5 UTP cable STP (Shielded Twisted Pair) - category 7 cable - GG-45, TERA connectors coaxial cable 1 © TAFE NSW, 2007 - commonly used in satellite connections Coaxial cable and connector fibre optic cable - multimode and single mode 8/125µm, 50/125 µm, 65/125 µm sizes SC, ST, MTRJ, LT, FC, FDDI connectors Fibre optic cable wireless - Wi-Fi (802.11a/b/g//n, see Reading 1: Network communication devices) bluetooth - satellite IrDA 2 © TAFE NSW, 2007 - WiMax - UWB (Ultra Wide Band) laser xMax (www.xgtechnology.com, xMax www.wikipedia.org). Once you understand the communications media that are available, you need to think about how you are going to implement your network media. Useful links and further reading: UTP - www.webopedia.com UTP - www.wikipedia.org Category 7 cable - www.wikipedia.org TERA connector brochure - www.siemon.com (PDF 2.74MB) TERA connection video - www.siemon.com Coaxial cables - www.accesscomms.com.au Coaxial cable - http://whatis.techtarget.com How fibre optics work - www.howstuffworks.com Fibre optic communication - www.wikipedia.org Fibre connectors - www.fiber-optics.info Connectors - www.anixter.com (PDF 168KB) Cables - www.anixter.com (PDF 283KB) Bluetooth - www.wikipedia.org How bluetooth works - www.howstuffworks.com Learn Bluetooth - www.bluetooth.com IrDA - www.webopedia.com IrDA - www.wikipedia.org How IrDA works - www.irda.org What is WiMAX - www.wimax.com WiMAX - www.wikipedia.org Ultra wideband technology - www.intel.com UWB - www.wikipedia.org. 3 © TAFE NSW, 2007 Some documents on this page require Adobe Reader to be viewed. 4 © TAFE NSW, 2007