Originally posted by: russellallen
ok, i will try to put new ends on using this order. i don't know what the wireing standards are though.
"Kind of. You can put them in any order (consistant on both ends) and it will work at 10mbit speeds, or 100mbit at very short distances. To get the higher transfer speeds, the pairing is very important. "
see i didn't know this. is the pairing mickey described the correct way to make sure i'm getting the 100mb speeds?
Yes, this pairing I put forth is the one of the correct ways to make sure you get the full speed (also known as 568B wiring - but as mentioned above as well 568A is also acceptable but in the industry is much less common wiring method). It also ensures furthest signal transfer. BTW, 568A is just the white/green with green pair swapped with the white/orange with orange pair. Nothing more.
And to explain why, you only need to break apart a typical CAT5e cable for instance. In doing so you will notice that the wires inside the jacket are paired with each other. Not only that but if you pay special attention you will notice that down the length of the cable, the actual twists in the cable vary. The white/orange with orange and the white/green with green pairs have much more twists "per foot" of cable then the other two pairs (white/bue with blue and white/brown with brown). This twisting of cables makes it possible to transfer faster and farther than without.
As mentioned above, "cross-talk" is this interference from not only the signal being carried but possibly other cables nearby and fields around the cable in usage. Not only do the pairs twist but the color combinations also twist with each other helping increase the effect. Most quality cables will specify the actual twists per foot of cable to let you know the build of the cable. Also, you will see ratings on the cables at times indicating the "MHZ" rating. That is the rating of the cable transmission capabilities and to give you an example, 100MHZ rating falls in the CAT5 category. 350MHZ rated cable falls in the CAT5e and some CAT6 category. CAT5e is the minimum rated cable you can correctly use for Gigabit transfers for instance. Not that CAT5 CANT work, but not designed to do it as reliably.
Last but not least, if you are making cables that are in use and not stationary, then try to use "stranded" cabling for increased life expectancy. Hope that helps.