Wiring a 2 pair cat 5 cable to a RJ-45 connector.

learnnetnet

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Oct 31, 2012
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I have a long 2 pair cat 5 cable which I want to use to connect a ADSL modem to my desktop (located in a different room). I took the cable to few local computer dealers but none of them could help me connect an RJ-45 connector to it. They can only connect a 4 pair cat 5 cable. I could not find any help on the internet either.

Can anyone please explain the step by step method to connect a 2 pair cat 5 Ethernet cable to a RJ-45 connector. Kindly use simple language. I have attached an image of the cable for your reference.
Here is the image url - - http://imageshack.us/photo/my-images/339/2paircat5.jpg
2paircat5.jpg
 

learnnetnet

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I am not able to understand from the above articles. I am aware that Ethernet uses only four slots in the RJ-45 connector. The image I have uploaded has 2 pairs (4 wires). Can you explain it in the following way:-
Insert orange wire in slot 1. Insert white wire in slot 2. Insert blue wire in slot 3 and so on.
 

learnnetnet

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Based on the above replies I have finally figured this out. I have successfully wired the cable to a RJ-45 connector. Here is the solution in a simple and non technical manner.
Ethernet uses only slots 1,2,3,6 in a RJ-45 connector. The cable I have used has one orange wire , one blue wire and two white wires. One of the white wires is paired with the orange wire and other one is paired with the blue wire. I will call these two white wires orange white and blue white based on their pairing with orange and blue wires. To make a 2 pair cat 5 cable insert the four wires in RJ-45 slots in the following manner.

RJ-45----------- 2 Pair Cat 5 (UTP)
1 -------------- orange white
2 -------------- orange
3 -------------- blue white
6 -------------- blue

The Ethernet cable was made to connect an internet modem to a desktop/laptop. Thus it was a straight cable.

Thanks to both hometownfl and bill001g for their help.
 

hometownfl

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Oct 4, 2012
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Nice job figuring it out! Sorry, I would've helped more but I haven't checked the forum for a while.

I can't believe those computer dealers didn't know that though. Orange and green is always the data, unless it's gigabit.
 

marky123

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Hi Guys. I have 2 pair cable that i want to use rj45 connectors at each end of this cable. I basically want to create an Ethernet cable. The colours i have are Blue, White, Black and green. Can anybody tell me what colours to use in slots 1236? Thanks
 

Ashiqurrahman

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Use any color configuration in pin 1236 as the cable isn't using any standard code. But use same configuration at both end.