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Pancake_EffectFlag for United States of America

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How to terminate this phone wire?

Okay so I'm redoing some of the faceplates at work. Usually phone wire is pretty easy, being it's just the blue pair to terminate. however I found this larger bundle of phone wire that I don't know where to begin because of all the different colors. There's even a red and black pair.

I don't need to terminate the square box, I just need to replace the Rj11 jack with a newer Rj45 one.

Where do I put these wires on a Rj45 being that they don't follow the normal color scheme? They even look like they have a sodered cap at the end of the wire going into the Rj11?

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Ben Hart
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If you insist on using the box and existing wires.. then punch the white/blue to the center pair on your rj45 jack and you're golden pony boy.
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Quick question, why are you doing this?

Do you have a phone device that has a RJ45 instead of a RJ11?  Kind of unusual for that.

If you are attempting to use this as a LAN connection, you may want to rethink.  The wiring in side that jack is most likely CAT3 at the best, which means it will not support anything over 10 Mbps.
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We have a a few phones in each room next to it, I figured the square box had to do with something with connecting those all together. What's the point of the square box? You're saying it's not even needed, and is only local to that phone? Why wouldn't they just put a Rj11 connector on it without the box?

PS: If I just punch the blue pair, why did they punch all of them?
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Actually what you have there is RJ12.. it used all 6 wires.  Take a look here: rj11-rj12
Ah okay that makes more sense. I do know that this is plugging into a analog phone, do you think that I have to worry about it still needing that legacy setup requiring more than a single pair?

Sorry I'm more of a server/networking guy, my understanding of telecommunications is quite basic haha.
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Just to take the safest route possible, can I take all six wires in the Rj12 and put it in the RJ45 jack. I know it might not be the easiest, but it will be the safest way, being that it's vital that the other phones remain operational.

If I were to put all six pairs in a Rj45, what would the order be, being that again the color scheme is different. I'm use to using the B standard for data cables.
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-->  I'm use to using the B standard for data cables.

Again, are you planning to use this for LAN?
Also look at the cord used to connect the device to this particular jack.. how many conductors are in it?
I'm using a RJ45 simply because it fits our face-plate (which the face-plate is being replaced because it's become our standard) I just mentioned B standard because that's what I'm use to being a networking guy, I'm use to that color scheme for the wires. This is for analog phone services (I know it has nothing to do with the B standard I mentioned, sorry if I confused you) I'm not use to this red, white, black etc color scheme. So I was just wondering if someone could just give me a order for example Black, Red, White, etc in order for a Rj45 plug. But I might do what the others said and see if I can find another wall jack that may have been upgraded with a Rj45 jack in the past.
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We had a wiring company do all of the other drops, this is just one that they didn't get to. Below is a picture of one that they did that's in the same room...not quite sure if there was a biscuit on it before or not..

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Thanks everyone! I simply just connected the red and green wire after cutting off the biscuit, and I still had a dial tone. That was my main fear was it was daisy chained, but based off your feedback, there was none, and all the phones are all working great now and mission accomplished.

Thanks for the help everyone.