Straight cable making

pin1 - orange/white
pin2 - orange
pin3 - green/white
pin4 - blue
pin5 - blue/white
pin6 - green
pin7 - brown/white
pin8 - brown

also note that pin #1 --> pin 3 at the other end... pin 2 --> pin 6, pin 3 --> pin 1, and pin 6 to pin 2. The others are straight... pin 4 --> pin 4 etc. Sometimes people do not pay attention to the colors... the sequence is important too.

You can get a good visual at
http://www.linksys.com/faqs/default.asp?fqid=20

The point of a straight cable is that the wires are not crossed over from one end to the other.
The sequence of colours doesn't actually make any difference (though protocal may call for the correct sequence) you just have to make sure that whatever colour you put in pin1 at one end of the cable you put in pin1 at the other end and the same for pin2, pin3 . . . Therefore the cables pass straight through to the other end. Normally these cables are used for computers connected through a hub, if you're connecting nics directly you'll need the crossover cable style.

The pairs of wires inside the case are known as ring pairs. One is color with white and one is white with color. While it is completely work able to hook up the same order at both ends, that may defeat the design of the cable. The pairs are twisted together at a specific rate measured in twists per a given length. The blues may have 16 twists and the oranges 33 and the greens 11 and the browns 27 ... This arrangement defeats line noise and crosstalk among the pairs.

If you face the RJ45 end cap away and point the tongue down, then pin one is at the left paired with pin two, pin three paired with pin six. That is all the connections required for 10MB ethernet. For full duplex and 100MB or faster ethernet to function reliably, all four pairs will be connected, with pin four paired with five and seven with eight.

There are customized znd different arrangemetns that may allow a phone carrier or intercom in there, as two pairs are largely available, but as the standards evolve and more devices come off the shelf ready to slot in a pc box, those installations are mosly gone now.

To create a crossover cable for direct connect or uplink purposes, do one end as normal and at the other reverse the order of one and two along with three and six.

Hi , i dont want any points but please to every one who reads ,pleas ,please please stick to standard cableing convertions.If someone has to work on the network and it is a nightmare working with cables that are crimpt in any old fastion.

Thank you and goodbye

The easist way is to take the two RJ45 jacks & put them in one of your hands, with the locking tabs down. Next look at the wires they should be the same colours in the same pin placements.. You may have to move the boot back a little to see the wirecolours.

I had always had trouble with different guides and instructions, so I made my own.
http://godofdata.tripod.com/comp/cat5.htm

These 2 standards have never led me wrong, and I have had a good deal of trouble with cables not wired in this manner. Hope it helps.

- Mike Scott

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