RJ45 in-line coupler

[lybush]

Hi All,

I need to connect two RJ45 cables together and thought to use an in-line coupler for this.

So, I purchased some from e-bay and before using any, I checked them out with an ohm meter. What I found is, checking at each end of the couper, that the left side of one end is connected to the left side of the other end.

To me, that would be reversing the connections, such as what a cross-over coupler would do. There couplers were marked as 'straight through' couplers which I thought I needed to connect two cables together.

Am I thinking wrong or have I received the wrong couplers? I don't want to try using the cables coupled together as I might do some damage to the equipment.

Please set me straight.

Thank you.

Len

 

[spidey07]

I wouldn't worry about any damage to gear. Just plug it in and see if you get link lights.

Sometimes though those couplers can cause problems with network speeds (not cat5 rated, etc), give it a shot I guess.

 

[martind1]

the left side is connected to the left side? What?

a coupler shoudl work jsut fine and keep the cable in the same state (ie straight or crossover).


straight through will allow you to connect 2 together. remeber you are still dealing with lenght limits from point a to point b, not point a to coupler then coupler to point b.

the coupler does not repeat the singal and thus wont extend the range.

 

[spidey07]

what up martin?

 

[martind1]

funny.

 

[lybush]

Thanks to all who replied.

By left side connected to left side means looking each end respectively, the extreme left 'wire' is connected to the opposite end's extreme left 'wire'. That indicates, to me, that each connection, of the eight, are 'crossed-over' and not straight through. And, this is supposed to be a 'straight-through' coupler.

Hope this clarifies something!

Len

 

[spidey07]

Originally posted by: lybush
Thanks to all who replied.

By left side connected to left side means looking each end respectively, the extreme left 'wire' is connected to the opposite end's extreme left 'wire'. That indicates, to me, that each connection, of the eight, are 'crossed-over' and not straight through. And, this is supposed to be a 'straight-through' coupler.

Hope this clarifies something!

Len

well that sounds like a "rolled" connector and as such won't do what you ask.

 

[lybush]

Thanks for your reply and information.

But, what if I try to use it. Would it likely do some damage?

Len

 

[JackMDS]

Quote: "Would it likely do some damage?"

Only to your pride if you do it for your girlefriend.

 

[CTR]

If they are crossed, as it sounds like they are, just use two! The end result will be a straight-through connection that will probably work fine for 10/100 Ethernet.

 

[lybush]

That's what I plan to do. I have a relatively short RJ45 cable and plan to put a coupler on each end and then plug the two cables into these ends.

I'm waiting a few days before trying it to get enough courage to attempt it. I don't want to blow any of my equipment.

Thanks for your interest.

Len

 

[bgroff]

Originally posted by: lybush
That's what I plan to do. I have a relatively short RJ45 cable and plan to put a coupler on each end and then plug the two cables into these ends.

I'm waiting a few days before trying it to get enough courage to attempt it. I don't want to blow any of my equipment.

Thanks for your interest.

Len

OMG, you're killing me! If you are talking about ethernet "equipment" it doesn't really matter if the pins are all jacked. Its not going to break anything. (Unless you have a power over ethernet setup, but this phase will mean something to you if you do.) Go for it, plug it in and watch it go. Either it will work, or it won't. Life's to short to keep with the indecision.

 

[martind1]

Originally posted by: bgroff

Originally posted by: lybush
That's what I plan to do. I have a relatively short RJ45 cable and plan to put a coupler on each end and then plug the two cables into these ends.

I'm waiting a few days before trying it to get enough courage to attempt it. I don't want to blow any of my equipment.

Thanks for your interest.

Len

OMG, you're killing me! If you are talking about ethernet "equipment" it doesn't really matter if the pins are all jacked. Its not going to break anything. (Unless you have a power over ethernet setup, but this phase will mean something to you if you do.) Go for it, plug it in and watch it go. Either it will work, or it won't. Life's to short to keep with the indecision.

just try it now, if they are corssed, it jsut won't work. no blowups or anything, just a failure.

I think it will work jsut fine, unless one of the patch cables youa re using is a crossover cable.

 

[JackMDS]

Security in life is very important.

Here you can choose for few $$$ a Coupler that will tell you what it is:

Link to: A lot of Couplers.

Straight Couplers:

The Cheapest: Part #471953. The Best: Part#794040 (It is best because it is Shielded).

Link to: AnandTech - FAQ. CAT5 Straight, Crossover. What is CAT5, which one should I Use?

Link to: Wiring - I would like to wire my Networked Computers (Home Wiring).

Link to: Using CAT5 for Telephone Lines, and other Media.
:light:

 

[lybush]

Thanks, those links were great!

I now think that my problem is solved by just using the coupler I have.

Thanks to all.

Len