Cabling!

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Cabling!
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Types of cable

• Cat 5/5e
• Plenum Coating
• PVC
• Cat 6/6e
• Fiber

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Cat 5/5e

• Cat 5
• Rated to 100 Mbps
• Cat5e
• Cat 5 enhanced
• Supports 100 Mbps or 1Gbps
• Stricter specifications
• Power Sum Equal-Level Far-End Crosstalk
• Near-End crosstalk
• Attenuation, Return Loss
• 3 twists per inch
• The more twists per-inch, the more noise
  rejection.

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Cat 6

• Cat 6
• Higher performance than Cat 5e
• Performance relies on all components of the
  channel
• Jacks
• Patch-panels/cables
• Cross connects
• Cable

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Comparison
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Rules for running cable

• Things to watch for
• Fluorescent lighting
• Stay 12 inches or more away
• Transformers / Electric motors
• 40 inches or more
• Power lines
• No less than 5 in.
• Higher the power further away wiring should be

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Maximum Distances

• 100 meters for cat 5/5e/6
• To increase it, use a hub/repeater/bridge, etc

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Important but forgotten

• Cable relies on the twists
• Untwisting for ends should be as little as
  possible
• No more than ½ inch for Cat 5
• If you must cross with an electrical wire or
  conduit, they should cross at a 90 degree angle.
• 25 lbs of pressure can untwist the pairs.

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The nitty-gritty
568-B Standard
568-A Standard
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Cross-over cable

• Wire one end with T-568-B and the other with
  T-568-A

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Punch Panels
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More Info on the web

• www.google.com
• http//www.aptcommunications.com/ncode.htm
• http//www.lanshack.com/make-cat5E.asp
• http//cim.pennwellnet.com/Articles/article_displa
  y.cfm?SectionArticlesARTICLE_ID71394Publicatio
  n_ID27