RJ45 and RJ11 Sharing

fab475 -  
 fab475 -
Hello,

It's not really a question, but the answer. I'm sharing this because it might help others. I'm not an expert, but I made the connection at home and it works.

With a network cable, you can easily use both the phone + internet; this means that on the RJ11 / RJ45 socket coming from the wall, you can easily connect a landline phone and the internet (network)

I'll explain:
A network cable has 8 wires
The phone needs 2 wires
Internet uses 4 wires
(so there are even 2 wires left)

4 réponses

fab475
 
My installation.
Apartment equipped with RJ11 / RJ45 sockets

I only connected 2 sockets (no need for more, one for TV and the other for the internet) and used connectors for the wiring.

In my cabinet, I have 5 telecommunications conduits. To identify: I therefore removed the 2 sockets ONE BY ONE that interest me, connected 2 wires (orange + orange-white) together, then returned to the cabinet. With the ohmmeter, I tested the continuity on the orange + orange-white wires. Repeat for each socket you want to identify.
(once identified, do not forget to disconnect the 2 wires)

Then look at the colors of your wires in the wall.
I had Orange, Yellow, Brown, Purple, Black, Gray . . .

On the wall socket
Black and Gray = Telephone on the wall socket they are on 4 and 5
Arbitrarily, I assigned = on the wall socket:
1 Orange
2 Yellow
3 Brown
6 Purple

So I reiterate:
We identified the sockets.
We wired the sockets that interest us.

Now we are going to connect the cable from the cabinet to the box.
I simply took a network cable that I cut on one side. (the other side will go to the box)

On the cut, stripped part, I connected:

1 Orange -- To --> White Orange
2 Yellow -- To --> Orange
3 Brown -- To --> White Blue
6 Purple -- To --> Green

As I needed internet on 2 sockets, I plugged in 2 cords to the box. Operation to be done 2 times.

And the telephone. The telephone is gray and black. So put these wires where you want to have the landline.

In my case, I wanted to have internet + telephone on one socket, so I connected everything. (4 and 5 for telephone)

So let's recap.
From the box, I go out with an internet cable; cut and connected with a connector to the white cable that goes into my sockets.

At the wall outlet. I plugged in a network internet cable, and again I cut it.

You need to check the colors for internet and reconnect an internet cable, then also cut the telephone cable to 2 wires and reconnect the wires (for telephone it's green and red, that goes with blue and white blue (but I don't remember the polarity)

There you go, I tried to be clear.
The male and female sockets have an order; photo if later.

For the last step, separating telephone and internet, there is apparently this; http://www.touslescables.com/a.php?reffab=H54001&ch=Ok&a=

See you later.
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brupala Posted messages 111981 Registration date   Status Membre Last intervention   14 423
 
Hello,
it's true, but a few clarifications:
Ethernet (only 10/100 Mbit/s) does not need the internet and requires 4 wires (pairs 1/2 and 3/6)
the phone typically uses the central pair 4/5
The last pair 7/8 can be used for a second line or something else (TV).
Gigabit Ethernet uses all 4 pairs, so it cannot coexist in an RJ45.


and ... There you go!
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fab475
 
Hello,

Quick question.
Can I plug several computers directly into the socket that comes out of my wall at the same time? By crossing the cables?

Thanks for your help.
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brupala Posted messages 111981 Registration date   Status Membre Last intervention   14 423
 
The socket that comes out of the wall, as you say,
is just the image of the one that corresponds to it on the patch panel.
You can connect to it whatever is connected to its twin.
That's the true role of VDI cabling: to elegantly extend the distance.
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fab475
 
yes, it's like I have only one RJ45 output on the box and I need to connect multiple computers (without a hub or anything else)
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brupala Posted messages 111981 Registration date   Status Membre Last intervention   14 423
 
no, not over ethernet:
over ethernet it's one machine per socket, unless you go through a hub or a switch.
however,
it is possible to put 2 ethernet sockets on the same one, actually to use the 4 pairs, with two splitter couplers.
like this:
the diagram of the ethernet splitter couplers is as follows:
2 machines always use 2 switch ports but only one cable "in the walls"
Of course, this setup is limited to 10/100 Mbit/s
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fab475
 
Very interesting. Thank you for this very precise answer. :D
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