freebox -- RJ45 socket -- computer

Question

Hello everyone, I hope you can guide me on a problem I'm facing. I am a Free subscriber, I have the Freebox Revolution. I installed this Freebox (server and TV) in the same room. I would like to have internet in another room without using Wi-Fi. The installation I'm going to describe was done by me, as I have just purchased the house and had to build the "internal" network. So I connected an RJ45 cable from my Freebox to a wall RJ45 socket. From this wall socket, an RJ45 cable goes to another RJ45 socket. Finally, I connect a computer from the wall socket with a cable to the PC, but it doesn't work. I also want to clarify that when I connect a PC via RJ45 to the server box, it works without any problem. My first question is as follows (I'll try to be clear, sorry if the terms aren't accurate) - When stripping an RJ45 cable, there are 4 twisted pairs: white/blue, white/green, white/orange, and white/brown. On the wall RJ45 sockets, we have the same color code, but the orange can be placed in 2 different locations. Does it have to be placed on the same side on both sockets? - Furthermore, is the very fine wire important? Or can it be cut? And finally, do you think the wiring I want to accomplish could be operational? The problem might actually come from that. Thank you in advance for your answers.

brupala · Accepted Answer

Hi, did you run a direct cable between your two sockets? Yes, the orange pair should be in the same place at both ends; usually, we use wiring B, but it's not mandatory at all. What’s important is that the twisted pairs are correctly respected and positioned at each end. To check your wall socket wiring, I recommend investing in a small cable tester; it costs less than 10 euros on some websites, and it will save you time. PS, for the terms, a cable is not RJ45, it’s twisted pairs, RJ45 (8P8C) is the connector you put at the end. Also, it’s indeed solid core cable you have connected to your wall sockets, not stranded wires (which are flexible, for male connectors). And ... Voilà Voilà Voilà!

Sergio39 · Answer

Good evening, 1) each wall socket must be powered by A SINGLE CABLE coming from the box. (no question of bridging the sockets, it won't work) 2) connect the wall sockets using standard B as shown in this photo  the continuity wire must be connected to the metal tab of the socket and.. on the male RJ45 side, wrap 2 cm of wire around the cables as close as possible to where you stripped them. -- Don't forget to mark your post as "resolved" once the issue is fixed. Thank you.

Papounet17000 · Answer

Hi, All the sockets in the house go to a single location, a communication panel. This is where you need to connect your box, and one or more RJ45 cables will be connected from the box to the panel. That way, the RJ45 sockets in each room will be operational. The network professionals can tell you a bit more.

gereladame · Answer

So, if I summarize, I can/should do the following: - The cable that comes from my box should go to a wall socket, and I should plug my PC into that wall socket. - I need to follow standard B (which I admit I can't say how I connected things). - And that little wire is therefore important. - Finally, you can't "bounce" on an Ethernet network like you can with an electrical cable. Thank you anyway for your responses.

Sergio39 · Answer

You understood everything.. ONE CABLE PER WALL SOCKET (3 wall sockets = 3 cables going to the box) At the level of the wall sockets, the color of the wires must correspond to the color indicated by NORM B For example, look at the image I posted, we see that the socket is wired according to standard A... in your case, instead of the "green/white" and "green" wires, you need to use "orange/white" and "orange" On the other side of the socket, do the same, respecting the colors according to standard B. Otherwise, do you have an RJ45 crimping tool for the male sockets? Do you know how to align the wires in the male socket? -- Don't forget to declare your post "resolved" once the problem is fixed. Thank you

gereladame · Answer

Well no, I don't know how to align the wires on the male plug and I don't have a crimping tool either (but I think I could get one if needed). I was counting on managing with my two wall sockets :/ At the same time, it would have been wiser for me to ask questions before doing things... anyway. I guess I'll find a video on YouTube that explains how to connect according to standard B on the male plug... Otherwise, just for my personal information, what's the difference between standard A and B? I just looked it up quickly online, but what comes up most often is that standard B is a bit of the default standard but that it ultimately doesn't matter much...

gereladame · Answer

One last question, after that I won't bother you anymore. I don't have a male plug on hand (and tomorrow is Sunday), can I cut the one that's already on an RJ45 cable and reuse it? In fact, one last question :) Is an RJ45 crimping tool essential?

Sergio39 · Answer

The A standard is a wiring that has been used in the past (and still is) but is increasingly being replaced by the B standard to "standardize" network wiring, whether domestic or professional (for example, in a factory). Otherwise, just follow my instructions to wire the wall socket. Check out this video; it will give you an idea for wiring the male plug (in the case of the video I'm linking, the person leaves WAY TOO MUCH stripped wire, it should normally be a MAXIMUM of 1.5 cm... here they leave at least 2... 2.5 cm, which means that the outer insulation of the cable will not be properly crimped in the socket (at the end, you can clearly see the metallic shield sticking out of the socket, while it should be completely inside the socket). They also did not wrap the continuity wire. Here is the link https://www.youtube.com/watch?v=ys0F3GMaZfw . -- Don't forget to mark your post as "resolved" once the issue is fixed. Thank you.

gereladame · Answer

Thanks a lot for the video. I deduce that I can't reuse a plug that is already on a cable and that a special crimping tool is needed. Thanks again. And have a great weekend.

Sergio39 · Answer

Oh yes, male RJ45 jack used not reusable. Have a nice weekend -- Don't forget to mark your post as "resolved" once the issue is fixed. Thank you.

Freebox --> RJ45 socket --> computer

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