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[quote user="BlueHillsCPR"][quote user="Falls Valley RR"][quote user="yankee flyer"] BruceOK whats cat 5? is that the same as 4 wire telephone cable (wire)?  <img src="/TRC/CS/emoticons/icon_smile_perplexed.gif" border="0" width="19" height="15" />Lee       Happy RR ing[/quote]No it aint.It is 8 wires wrapped into one that are supposed to feed workstations from routers, hubs, rack panels etc. One of those can reach 100 yards from the MDF or IDF within a work building to a workstation.I better shut up now... about to reveal my staggering lack of knowledge and ignorance for all the world to see.[/quote] Sounds like you have it pretty well cased actually. [:)]The only thing I might add is that category 5 cable can be found in sheilded and non-sheilded varieties and the 8 conductors are actually more appropriately described as four pairs.  The sheilded variety has a foil wrap around the pairs to limit external interference.  The non shielded is usually called twisted pair because the paired conductors are twisted together.  The twist provides sheilding from interference.  That's about as far as my knowledge goes.  Beyond that is pure ignorance on my part. [:D] [/quote]That would be called cross talk I believe. When bundles of wire carrying alot of traffic begin to literally signal each other and interfere with traffic.If memory serves, we had 40 work stations in one class room. I think there were about12 class rooms in the building, one of which is a protected security/proxy lab for hacking etc. The rest of the school were on fiber between buildings and ultimately to a little green box carrying a HUGE amount of copper.All we did was take half the workstations, go through a bunch of routers and connect to the other half. And variations of the same exercise.
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