RJ45 Cat5e to RJ11 adsl 2+

[cookiemonster]

Hi anyone any idea if this will do and what wires go where.

 

[FordGT90Concept]

I assume the CAT3 cable has the ADSL2+ signal. Why CAT5? CAT3 should be terminated with an RJ11 connector/box. then you use a telephone cable to connect that to the ADSL gateway. Are you intending to plug a telephone cable into that CAT5 jack?

 

[cookiemonster]

Hi It's for fibre, I ran a new rj45 cat 5e cable to my router in my bedroom and I am using this box to terminate the cat5e and change it to a rj11to plug it into the router.

 

[FordGT90Concept]

That wire you got is definitely CAT3 (10 mbps), not CAT5 (100 mbps).

RJ11 connectors do not work in RJ45 jacks, which is what that CAT5 terminator most likely has.

How is that CAT3 cable wired on the other end?

I hope you have a punchdown tool. That box looks like it needs it.

 

[cookiemonster]

The cat3 has an rj11 on the other end and yes I have a punchdown tool.

 

[Bill_Bright]

I agree with everything FordGT90Concept has said. Where does the other end of that CAT3 cable go? Is that from your ISP? If not, then you should replace that CAT3 with at least CAT5e, preferably CAT6 to carry you further into the future. CAT3 was never intended for networking. In fact, it has often been referred to as VG or voice grade cable. CAT5e and CAT6 can, however, be used for telephones.

CAT3 is for telephones and uses RJ-11 connectors.

RJ45 connectors are for "Ethernet" or network cables.

Routers do not use RJ11. Now a DSL "modem" will connect to your ISP via RJ11 but the modem then converts (modulates/demodulates) the signal for use with networks. So your side of the modem will use an Ethernet cable to your router.

If you have an integrated "residential gateway" device, the modem and router (and 4-port Ethernet switch and usually a WAP or wireless access point) will be integrated into one box. 4 discrete devices that just happen to share a common case, circuit board, and power supply. But it will still have only Ethernet on your side of the device.

You say this is for fiber. Where is that coming from?

As far as actually answering your question, color coding really does not matter - it is just used to ensure standardization and avoid confusion. All that really matters is the correct data conductor is placed on the right pin. The color coding of the wire that puts it there does not affect that. So you could use a simple cable tester.

 

[FordGT90Concept]

I'd recommend changing it to an RJ11/RJ12 jack:
https://www.amazon.com/CableWholesale-Vertical-Termination-Keystone-320-120BK/dp/B000I1YUL6
The colors will match your CAT3 cable.

Or the equivalent of what you have now but RJ11/RJ12:
https://www.amazon.com/InstallerPar...TF8&qid=1535297622&sr=8-6&keywords=rj11+jacks
I hope you can look at the other end of that cable to identify how they wired it. Orange/green is not standard:

Use a short phone cable to go from your jack to the ADSL gateway.


@Bill_Bright ADSL is digital, there is no modulation/demodulation, hence gateway. You're bridging digital networks.


Edit: On second thought, examine that cable carefully. Can you see more cut off colors inside? It might be a CAT5 but someone removed the blue and brown pairs.

 

[Bill_Bright]

My mistake. You are technically correct. It is still called a DSL "modem" however and that is where I was coming from.

 

[FordGT90Concept]

Because "cable modem." It's like calling tissues "Kleenex" or carbonated beverages (no matter the kind) a "coke." Once a word usage wiggles its way into the lexicon, it rarely releases it even if it is demonstrably incorrect.

 

[Bill_Bright]

Because "cable modem." It's like calling tissues "Kleenex" or carbonated beverages (no matter the kind) a "coke."

LOL Very true! I too use Kleenix all the time. Same with "Q-Tip". And though I never understood calling all "sodas" coke (that's "sodas" not "pop" ), I have seen that often.

 

[cookiemonster]

Hi I ran a cat5e cable with fixed rj45 ends from my main supply coming into the house to my bedroom where my D-link model dsl-3782 router is and I want to use that cat5e box to change it to a rj11 to fit into my router the cable you are saying is a cat3 I bought it as an adsl2+ and it has an rj11 end on it. I just want to know if it can and how I wire it.

 

[FordGT90Concept]

Still confused...

"Main supply" should be a phone line which should already be terminated as a female RJ11. All you need is a basic phone cable (RJ11 M-M) going from that RJ11 female jack into the "Broadband" RJ11 female jack on the router.

If you're "main supply" is an ADSL2+ gateway your ISP provided, it has a female RJ11 and female RJ45. Your ISP should have already plugged in a functional RJ11 cable into that device so you're trying to get that RJ45 cable from where they installed it to where you actually want your router.

I'm not sure which is your case. When I was on ADSL (as an example), it was something like:
external box -> CAT6 -> RJ12 keystone (blue #1, green #2, orange #3) -> 2' RJ11 cable -> Netopia 3341 ADSL gateway -> CAT6 -> Asus RT-56N router -> CAT6 -> Netgear GS108 switch -> CAT6 -> computer

Can you explain your situation like I did above? Replace what you don't know with ??? and provide as much information as you can. All I know for sure is:
??? -> D-Link DSL-3782 -> ???
...and you have a cable that should probably be in the trash.

 

[eidairaman1]

That wire you got is definitely CAT3 (10 mbps), not CAT5 (100 mbps).

RJ11 connectors do not work in RJ45 jacks, which is what that CAT5 terminator most likely has.

How is that CAT3 cable wired on the other end?

I hope you have a punchdown tool. That box looks like it needs it.

Actually they do work if DSL/dialtone is being sent on center conductors (blue/blue-white pair).

Does he have POTS?

 

[FordGT90Concept]

The problem with RJ11 in RJ45 is that the plastic on either side of RJ11 places force on the outer metal contacts of RJ45. If you leave it in there for a long time, they can deform to the point they don't make contact and the fourth pair won't work. Short term testing, it's fine but long term, I wouldn't recommend it.

 

[hat]

If you really need to use cat3 in a cat5 box, why not just lop the rj11 end off and replace it with a jury rigged rj45 end? Just make sure you have the wires where they're supposed to go, and then the rj45 will fit where it's supposed to.

 

[cookiemonster]

Hi this is the box fitted by my isp as it comes into the house, the cable plugged into the front is the Cat5e that I have run from there to my bedroom the other end is what I am going to plug into the Cat 5e box, that other cable is what I am hoping to connect from the cat5e box to the router

 

[FordGT90Concept]

https://www.bttorj45.com/vdsl-adsl-nte-filtered-faceplates/mk4-bt-openreach-vdsl-socket/

If the link is right, that's an ADSL filter which accepts RJ45.

You have a CAT5 cable run, terminated with an RJ45 connector that is pictured and plugged in, correct? A picture of that connector unplugged so we can see the wires (up to 8) in the connector would be super useful.

If that cable is 100% certain to be the same cable with the orange and green pairs...there's a good chance you're missing the pair you need (blue).


On the other hand, that cable might not be CAT5 at all... In which case, whatever twisted pair is on the center two pins is the one you need to focus on.

 

[cookiemonster]

Hi ForfGT90Concept, can I please post that picture tomorrow as it is late here in the UK.

 

[eidairaman1]

https://www.bttorj45.com/vdsl-adsl-nte-filtered-faceplates/mk4-bt-openreach-vdsl-socket/

If the link is right, that's an ADSL filter which accepts RJ45.

You have a CAT5 cable run, terminated with an RJ45 connector that is pictured and plugged in, correct? A picture of that connector unplugged so we can see the wires (up to 8) in the connector would be super useful.

If that cable is 100% certain to be the same cable with the orange and green pairs...there's a good chance you're missing the pair you need (blue).


On the other hand, that cable might not be CAT5 at all... In which case, whatever twisted pair is on the center two pins is the one you need to focus on.

Color doesnt matter as it's all copper, the leads just need to be in right position. For pots/dsl it is typically center of rj45/11.

What say you @Kursah?

 

[Caring1]

I'm still confused why you need RJ11 to plug in to the Router, are you using the ADSL port for Fibre?
Most modern Routers use a WAN port for fibre (RJ45).

 

[cookiemonster]

Hi is this the picture you wanted.

 

[FordGT90Concept]

That's a standard patch cable so...you're gonna have to peel back more of the jacket on the end with the exposed orange and green pairs to at least find the blue pair. Once you found all four pairs, I'd punch them all down into that CAT5 jack you got. You match the color to color, colored stripe to colored stripe.

Once you got them punched down and the jack reassembled. All you need to do is plug in a RJ45 patch cable or a phone cable from your jack into the broadband port on the router and you should be good to go.

 

[cookiemonster]

Hi that cable has no blue pair so I have ordered this one hope it will do I can cut it.

https://www.amazon.co.uk/dp/B07CVJTBVB/ref=pe_3187911_185740111_TE_item_image

 

[eidairaman1]

Hi that cable has no blue pair so I have ordered this one hope it will do I can cut it.

https://www.amazon.co.uk/dp/B07CVJTBVB/ref=pe_3187911_185740111_TE_item_image

Bro it is rj11 rj11 you said that one of your ends which goes to that little half ringer on the wall is a rj45.

Go look for a rj45 to rj11 cable

 

[FordGT90Concept]

Hi that cable has no blue pair so I have ordered this one hope it will do I can cut it.

https://www.amazon.co.uk/dp/B07CVJTBVB/ref=pe_3187911_185740111_TE_item_image

I'm so confused.

Assuming you throw this cable away (it's a non-standard cable, no idea how you got it):

What are you dealing with where your router is supposed to go? Is it this?

And that won't insert into the Broadband port on here?

If I am right, then all you need is an RJ45 female to RJ11 male adapter.

If you have to do CAT3, keep it as short as possible.