Creating an Ethernet network using RJ11 connectors
dainem77
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brupala Posted messages 111945 Registration date Status Membre Last intervention -
brupala Posted messages 111945 Registration date Status Membre Last intervention -
Hello,
Here is my situation:
I would like to create a 10/100 Ethernet network in a residence equipped only with RJ11 wall sockets.
Normally, Ethernet networks usually use RJ45 sockets and cables that have 8 wires, of which only pairs 1/2 and 3/6 are used to carry the signals. That's 4 wires out of 8. Since RJ11 sockets can only accommodate 4 wires, here’s what I was thinking of doing.
1) Take an RJ45 cable and cut one end.
2) At the cut end, cut pairs 4/5 and 7/8 and crimp the remaining pairs into an RJ11 connector that I can plug into the wall socket.
3) Plug the other RJ45 end into the PC or network device (modem-router, switch, etc.).
Do you think this solution could work? If so, could it diminish network performance?
Here is my situation:
I would like to create a 10/100 Ethernet network in a residence equipped only with RJ11 wall sockets.
Normally, Ethernet networks usually use RJ45 sockets and cables that have 8 wires, of which only pairs 1/2 and 3/6 are used to carry the signals. That's 4 wires out of 8. Since RJ11 sockets can only accommodate 4 wires, here’s what I was thinking of doing.
1) Take an RJ45 cable and cut one end.
2) At the cut end, cut pairs 4/5 and 7/8 and crimp the remaining pairs into an RJ11 connector that I can plug into the wall socket.
3) Plug the other RJ45 end into the PC or network device (modem-router, switch, etc.).
Do you think this solution could work? If so, could it diminish network performance?
2 réponses
Hello,
Well, if there are only 4 wires, it also means that the wall cable is not designed for computer use, but for telephony, like syt1 or other types of orange.
So, be careful....
But yes, you can make this adaptation, the maximum speed will then theoretically be set at 100mbps, as gigabit requires all 8 wires.
Or, you can buy RJ11 Male to RJ45 Female adapters (make sure they are designed for Ethernet and not for phones) which will allow you to maintain the integrity of the RJ45 cords.
Do make a point-to-point test to verify it before making any changes.
From my experience, it works without any problem over short distances because we are completely OUT OF SPEC, but it’s a bit lengthy and you must pay attention to the wiring of the RJ11 plugs and have the right impression on the crimper.
However, in terms of time spent on the cords, I’m not sure it’s very cost-effective.
Lastly, I replaced the wall RJ11 with a low-cost cat 5 RJ45 from our friendly electrical equipment suppliers. It is much faster and easier to test.
Also, make sure to inform your client that they will never be able to use Gigabit.
By explaining this, I have often been able to replace the existing cable and sell real UTP or FTP cat 5E or 6, thus satisfying my clients.
Best regards.
Well, if there are only 4 wires, it also means that the wall cable is not designed for computer use, but for telephony, like syt1 or other types of orange.
So, be careful....
But yes, you can make this adaptation, the maximum speed will then theoretically be set at 100mbps, as gigabit requires all 8 wires.
Or, you can buy RJ11 Male to RJ45 Female adapters (make sure they are designed for Ethernet and not for phones) which will allow you to maintain the integrity of the RJ45 cords.
Do make a point-to-point test to verify it before making any changes.
From my experience, it works without any problem over short distances because we are completely OUT OF SPEC, but it’s a bit lengthy and you must pay attention to the wiring of the RJ11 plugs and have the right impression on the crimper.
However, in terms of time spent on the cords, I’m not sure it’s very cost-effective.
Lastly, I replaced the wall RJ11 with a low-cost cat 5 RJ45 from our friendly electrical equipment suppliers. It is much faster and easier to test.
Also, make sure to inform your client that they will never be able to use Gigabit.
By explaining this, I have often been able to replace the existing cable and sell real UTP or FTP cat 5E or 6, thus satisfying my clients.
Best regards.
