Very strange thing when making patch cords 2

[jojo11]

I wanted to get ehternet up to the bedrooms upstairs from the basement. Here is what I did.

Made 2 patch cords. One to go from the router to the long cable that would connect the 2 floors, and one from the attic to the bedroom. I tested both with a tester that has 4 lights, one for each pair. Both tested with all 4 lights lighting properly. I then ran a cable from the attic to the basement. I connected female RJ45 on each end to accept the patch cords that I had just made. I tried to test with all three cables connected and only got the 3rd and 4th light to light up, meaning the brown and blue pair (568B config). I bought new RJ45's and redid the long cable, I even tried a new long cable and got the same results. Figuring that the CAT5 cable might be too cheap, I tried swapping the orange for brown, and green for blue to see if the first 2 pair (orange and green) might not be making the long journey to the attic. Believe it or not, I got the same results. Only 3rd and 4th pair lit meaning now the orange and green were working.
Any ideas?
Even if the two patch cords are shoing good, is it possible that I used the wrong pinout and still got a good test result?

 

[daronwilson]

Is this the same install we already went over before it was removed from this forum? Apparently something is wrong with the plugs or the way you are installing them.

It sounds like you are sucessfull with modular plug ends right on the cable, so make up the cable from upstairs to downstairs with modular plugs and test it as if it were a patch cord. If that works, we know the wire (we assume also the tester) is good. Then, cut those ends off and place regular 568B modular jacks on the end, wired the same on both ends, then test again. If you have OPEN pairs, I suspect you are not terminating them correctly OR you have bad jacks OR your modular plugs aren't compatible with the modular jacks.

Also, I would make sure the tester does ok on factory patch cables, compare your home made one with a factory one and make sure your tester is operating correctly.

It's just a dedicated process of elimination, I suspect you are either wiring the jacks wrong, have bad jacks, or have some plug and jack compatibility problem, though that is pretty rare.

What brand of wire and jack and plug and tester are you using?

It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com

 

[jojo11]

...so make up the cable from upstairs to downstairs with modular plugs and test it as if it were a patch cord...
That's what I will try. GOod idea, thanks.
Yes, it did get removed for some reason. I tried contacting TT and didn't get a response so I'm not sure what happened.

 

[Bobg1]

I would have to think the problem is in the way you are making the connections.
The reason I say this is because on 568b the 3rd and 4th pair would not be brown and blue, like you have stated above.
On your plugs you should have the wires layed out like this
1. orange
2. orange w/white
3. green w/white
4. blue w/white
5. blue
6. green
7. brown
8. brown w/white
as for pairs vs pins
pair 1, pin 4,5
pair 2, pin 1,2
pair 3, pin 3,6
pair 4, pin 7,8
For ethernet to work it needs pairs 2 and 3
Hope this helps you better understand the wiring.

 

[daronwilson]

Actually, on a 568b modular plug, you should have

1 - white/orange
2 - orange/white
3 - white/green
4 - blue/white
5 - white/blue
6 - green/white
7 - white/brown
8 - brown/white

After putting the wires in before crimping I quickly scan it for alternating white and solid color to make sure i don't have a pair rolled (reversed). If the above is not clear, pin 1 is the white wire with the orange stripe, pin 2 is the orange wire with the white stripe, etc.

Another thing that comes to mind, modular jacks are often different depending on the manufacturer, are you following the color code on the jacks precisely ? Often they do not lay the wires out in the same logical order as the plug.

my guess is that the thread got removed due to negative comments from 'getwiredbymitch', at least it seemed like it. He seemed to make several impolite comments ... then all the sudden the thread was gone. Go figure.

It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com

 

[Bobg1]

must have been early morning dyslexia when I was typing.

 

[jojo11]

Update::::
I put male ends on the long run from upstairs to downstairs and the tester show 4 good pairs.....What the heck, now I am truly stumped. The only thing I can think of is that I have had 4 sets of bad RJ45 females ends which I know is impossible.

 

[daronwilson]

What brand are they and what brand are the modular plugs? I gotta think you are terminating those jacks wrong or something, must be something simple, we know it isnt wire
It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com

 

[sicron]

Keep in mind, too, that putting the modulars on solid-core cat-5 cable makes the cabling no longer category 5 compliant.

"The reward of patience is patience"
-St. Augustine

 

[BOKA]

So what's the MAIN problem? Female connectors don't seem to come out right. Get rid of them. Make all cables male-male and get a few straight-through female-female couplers.
Even if you are running cables inside walls (you have not specified) and have faceplates mounted, you can still use couplers, they need to be snap-in, though.
You can take a look at pictures of the items here:

http://www.cyberguys.com

Search for items 1800517 and 1800500

Good luck.