Phone Jackpoint wired with Cat5, but Modem requires RJ11

Forums › LAN (ethernet/Wifi/routers/Bluetooth) › Phone Jackpoint wired with Cat5, but Modem requires RJ11

J32

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#275797 9-Sep-2020 18:33

So in my new house the phone points on the wall are all wired to the central cable hub with cat5 data cables. The phone is supposed to go into Phone 1 jack (size RJ11 I believe) in the fibre modem. Is there any way to get this done?

If you want to see the Phone 1 jack here is an image of the modem: Modem image - Google search

Andib

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#2561285 9-Sep-2020 18:36

You need one (or two depending on what connection your phone has) of these

https://www.pbtech.co.nz/product/CABDNX0091/Dynamix-C-RJ1245-2-2m-RJ12-to-RJ45-Cable---4C-All

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Jase2985

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#2561290 9-Sep-2020 18:53

just get an adapter cable

RunningMan

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#2561306 9-Sep-2020 19:59

As @Andib has linked to, one of those between your router (modem) and the patch panel, then another between the outlet you want to use and the phone itself.

J32

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#2561307 9-Sep-2020 20:00

Thanks guys!

Ruphus

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#2561364 9-Sep-2020 21:00

In a pinch, a RJ11 plug will fit in a RJ45 socket.

RunningMan

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#2561366 9-Sep-2020 21:04

Not advised though. While it will fit and connect OK, it can sometimes damage the outer pins in the socket.

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nztim

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#2561368 9-Sep-2020 21:09

Ruphus: In a pinch, a RJ11 plug will fit in a RJ45 socket.

NEVER do this, it will render the socket unless for data at a later stage as pins 2.3.6 & 7 will be bent

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CrashAndBurn

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#2561376 9-Sep-2020 21:21

Sorry for hijacking but have a similar problem but reverse. I am moving to an apartment soon but the rooms all have phone jack points and was wondering if there is an easy way to convert those to act as LAN ports? Or wifi will be my only option?

Ruphus

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#2561378 9-Sep-2020 21:25

nztim:
Ruphus: In a pinch, a RJ11 plug will fit in a RJ45 socket.

NEVER do this, it will render the socket unless for data at a later stage as pins 2.3.6 & 7 will be bent

Thats why I said 'in a pinch'. If it gets damaged, just swap out the keystone. It's not that hard to do.

nztim

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#2561379 9-Sep-2020 21:25

CrashAndBurn:
Sorry for hijacking but have a similar problem but reverse. I am moving to an apartment soon but the rooms all have phone jack points and was wondering if there is an easy way to convert those to act as LAN ports? Or wifi will be my only option?

Ethernet Over Power is a good solution when you can’t re-cable there are several devices that do this

Any views expressed on these forums are my own and don't necessarily reflect those of my employer.

CrashAndBurn

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#2561388 9-Sep-2020 21:39

nztim:
CrashAndBurn:

Sorry for hijacking but have a similar problem but reverse. I am moving to an apartment soon but the rooms all have phone jack points and was wondering if there is an easy way to convert those to act as LAN ports? Or wifi will be my only option?

Ethernet Over Power is a good solution when you can’t re-cable there are several devices that do this

That was my 2nd option. Just wondering if anyone has tried something similar in an apartment before I buy the gear as not sure how the wirings work when it comes to multi-units.

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coffeebaron

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#2561392 9-Sep-2020 21:47

If you're lucky, they may have wired each phone jack-point back to a little hub in the apartment. If so, you might be able to easily upgrade to a patch panel.

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#2561399 9-Sep-2020 21:56

coffeebaron: If you're lucky, they may have wired each phone jack-point back to a little hub in the apartment. If so, you might be able to easily upgrade to a patch panel.

Assume its CAT 5/6 behind the jack and not blue/orange pair telephone wire

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rfdawn

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#2561417 9-Sep-2020 23:09

CrashAndBurn:

Sorry for hijacking but have a similar problem but reverse. I am moving to an apartment soon but the rooms all have phone jack points and was wondering if there is an easy way to convert those to act as LAN ports? Or wifi will be my only option?

Ethernet Over Power is a good solution when you can’t re-cable there are several devices that do this

That was my 2nd option. Just wondering if anyone has tried something similar in an apartment before I buy the gear as not sure how the wirings work when it comes to multi-units.

Have done this in my one-bed shoebox so it can be done if the phone wires are CAT5/CAT6. Used Cat6 keystone RJ45 jacks, face plates, punchdown tool from PBTech. My place has one master jackpoint and two extensions, but the extensions are daisy-chained which is common for phone extensions. In my case I don't use the middle jackpoint so I could have just joined the cables and covered it up but I now have a double RJ45 socket there with a very short patch cable which could be replaced with a switch if needed. My switch is at the end of the daisy-chain and runs everything at gigabit without errors.

K8Toledo

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#2561426 10-Sep-2020 01:41

J32:

So in my new house the phone points on the wall are all wired to the central cable hub with cat5 data cables. The phone is supposed to go into Phone 1 jack (size RJ11 I believe) in the fibre modem. Is there any way to get this done?

If you want to see the Phone 1 jack here is an image of the modem: Modem image - Google search

I've got a boxfull of RJ11/RJ12 to RJ45 cables. I'll be happy to send you one. Or 20. :P