RJ45 to wall socket.

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 Question by Richard Bell posted 03 Jan 2002
 RJ45 to wall socket.
A question for you, I wish to connect an RJ45 wall socket directly to a RJ45 plug to insert into a hub. I have connected the RJ45 plug to one end of a length of cable. I then connect the wall socket to the other end using the colour coded cable sockets on the reverse of the wall outlet (1 - 8).
I then connected a straight cat 5 cable into the wall socket and placed a cable tester onto the entire line. lines 1&2 appear fine, as do 7&8, 3&6 does not appear to have any connectivity and 4&5 appears to be mixed?
I presume that I haven't connected the wall outlet correctly.
On the reverse of the outlet is a colour coded diagram, I presumed to be indicating which colour cable should go into which socket. I appreciate that it doesn't matter which colour cable goes into which outlet socket, as long as it matches with the correct number on the RJ45 plug. There are also numbers which would indicate which number cable goes to which port. Looking at an RJ45 plug where is pin No1 and No8? And is there anything else I should be doing.

A bit confusing, but any help would be appreciated.
 Answer by Dmitri Abaimov posted 06 Jan 2002
Dear Richard,

About the plug pin numbers first. If you look at the layout on this page: http://www.cabling-design.com/references/pinouts/t568ab.shtml and imagine that you're inserting the plug towards the pictured jack's opening, your plug numbers will match jack pin numbers indicated there.
So, pick your pin layout scheme out of two choices: T568A and T568B and make sure you do the same for the plug and the jack. I guess, since you have some certain jacks already, just use the scheme of the jack.
There is really not much more to say on the subject than just follow the color code precisely and make sure the conductors are inserted all the way through before you crimp. Well, maybe just one more thing: your plug has to match your cable type meaning with solid copper conductor cable you would use solid copper conductor plug and same for stranded conductors.
Hope this helps.
Dmitri Abaimov, RCDD

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