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Cable testing issue

Last response: in Networking
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October 26, 2010 1:00:48 PM

Hi,

I'm making some hybrid cable RJ45----RJ11(6p4c)

I follow the color code carefully. Crimp and test. Each time I get the following results
RJ45--- RJ11
1 --- 2 ( on)
2 --- 3 ( on)
3 --- 4 (nothing)
6 --- 5 (on)

The 3rd cable is always off !
I thought it would be the crimping tool or the heads but I've made some RJ11---RJ11 working perfect with the same tools/heads...


Any idea?

More about : cable testing issue

October 26, 2010 1:27:09 PM

This might help you out.
http://www.siemon.com/us/standards/13-25_common_outlet_...

As far as I can understand you, you're using a cat5 cable, one end is RJ45, other is a 6pin RJ11?

If I am right, the matching would be this :
RJ45 RJ11
use-pin use-pin
T1 -5 R1 -3
R1 -4 T1 -4
T2 -3 R2 -5
R2 -6 T2 -2
T3 -1 R3 -6
R3 -2 T3 -1

Since you're using only 4 cable (2 pairs) remove the R3/T3.
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October 26, 2010 2:50:09 PM

Well, the problem might come from the Tester itself. It seems it can handle cable test with the same number of pin only.

I connected two of the hybrid cables together with an adapter female female

RJ45---RJ11-adapter-RJ11----RJ45
Results

RJ45---RJ45
1 --- 1 ( on)
2 --- 2 ( on)
3 --- 3 (on)
6 --- 6 (on)

Working...
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October 26, 2010 5:41:05 PM

You could be right, depending on the type of tester you are using.
I know some tester will let you know if you receive some signal or not on each pin, whatever the connection is.
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!