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36 votes

Wiring Ethernet through Telephone Cable

Nope! Plain Old Telephone Service (POTS) jacks were usually daisy chained as you describe. Ethernet requires a "home run" from each jack to a modem, router or switch. Also, it's probably cat-...
George Anderson's user avatar
27 votes
Accepted

Am I OK cutting an unused cable TV incoming service cable attached to my house?

The "Time Warner Cable" interface box positively identifies this as a cable-TV coaxial cable. Try calling your area's current Cable TV provider (which may, or may not, be Time-Warner, as ...
Ecnerwal's user avatar
  • 221k
26 votes
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What's the right way of removing an indoor telephone line?

If you are removing it, remove it. It's only "short-sighted" if you have any conception that you might want a landline phone there. You MIGHT be able (depending on how snug it is, and how ...
Ecnerwal's user avatar
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23 votes
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Repurpose telephone line to ethernet

Gigabit Ethernet If you need Gigabit Ethernet (1000Base-T), you're out of luck and will have to run new wires with CAT 5e or better cabling. It's likely not that difficult depending on your house. It ...
technogeek1995's user avatar
22 votes
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Mystery telephone wiring device in old house

Standard Bell System (Western Electric, usually) terminal block. Appears to be missing the protective devices, but those are not needed since it's no longer the NID. Sure, take it out and modernize if ...
Ecnerwal's user avatar
  • 221k
20 votes

Wiring Ethernet through Telephone Cable

There is a separate issue of the type of cable. Telephone can run on CAT 3 (10 Meg. ethernet), CAT 5 (100 Meg. ethernet), CAT 5e (1 Gig. ethernet) but also on much older types of cables that are not ...
manassehkatz-Moving 2 Codidact's user avatar
17 votes

Safe to remove out-of-service 3-line landline junction box by myself?

This is a demarcation box - it belongs to the telco and you should contact them and get them to remove it if you want it gone. The wiring accessible in the top half is yours to do with as you please.
storm955's user avatar
  • 171
15 votes

What's the right way of removing an indoor telephone line?

Even if you never have a landline, you might want to use that wire again. I have repurposed old phone wiring for many things = thermostats, alarms, doorbells, etc. If you really don't like looking at ...
batsplatsterson's user avatar
11 votes
Accepted

Is this odd device some kind of lightning arrestor or primitive fuse? Help identify

Based on this image and quote, I'm about 99.95% sure that it's an old telephone line suppressor: Soon after telephone networks began to spring up across the countryside, the Bell Telephone Company ...
Ecnerwal's user avatar
  • 221k
11 votes

Am I OK cutting an unused cable TV incoming service cable attached to my house?

I would remove it from the house. Open the box and disconnect any wires going into you house, then remove the box from your wall. Unhook the wires from the house and coil up the wires and box and ...
JACK's user avatar
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9 votes
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Can anyone suggest how to connect a CAT6 cable to the incoming 5 pair telephone cable?

Each of the incoming pairs in the telco's 5-pair cable is for a separate analog telephone line (or, in today's world, a single DSL channel). The pairs are identified by color: there's a solid blue ...
Greg Hill's user avatar
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9 votes
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How do I replace original telephone jack with a new one?

Note that, as is typical for a single line install, you only have 2 wires active, and a 2 or 4 wire jack would work just fine as it's only the white-with-blue (going to green, old-style)/blue (going ...
Ecnerwal's user avatar
  • 221k
8 votes

Repurpose telephone line to ethernet

The cable type is almost certainly BT spec CW1308, 3 pairs would be normal for UK extension wiring. It won't be to Cat5 or better spec, but over a short run and without external interference you ...
Owain's user avatar
  • 2,673
8 votes

Am I OK cutting an unused cable TV incoming service cable attached to my house?

The previous owner of my house was a Comcast customer and I did not reactivate service when I moved in. Several years later a storm damaged the Comcast drop to the house, leaving the cable lying in ...
Crash Gordon's user avatar
8 votes

Safe to remove out-of-service 3-line landline junction box by myself?

Utility Don't cut the wires. You may not know why, now. But when you need to run 5V or 24V from A to B and you happen to have intact useable 18ga cables ready to go, you'll thank yourself. Lots of ...
jay613's user avatar
  • 41.8k
7 votes

Wiring Ethernet through Telephone Cable

If it's a reasonably modern twisted pair telephone cable, then it's equivalent to CAT3 Ethernet. For Ethernet, that's obsolete by today's standards. It's only good for 10Mbps, or maybe 100Mbps over ...
Simon B's user avatar
  • 4,058
7 votes

Why do phone and cables companies leave their cables behind, and what to do about it?

Now you've changed the question significantly to describe a wire fed from underground. Except you still have a trunk running down the pole, so this is still a wire coming down off a pole. Again, you ...
Harper - Reinstate Monica's user avatar
7 votes

Mystery telephone connection block in old cottage

The way to test this is with a telephone test set: The gold standard is a major manufacturer such as the Fluke pictured above. But in reality, all you really need is a cheap phone with something that ...
manassehkatz-Moving 2 Codidact's user avatar
6 votes
Accepted

For phone jack, which terminals are used by modem?

You need to connect to the center two wires in RJ-11. Since RJ-11 is usually 6 pins, these are pins 3 and 4. If yours has only 4 pins, these should be pins 2 and 3. Leave the other pins unconnected. ...
haimg's user avatar
  • 1,193
6 votes
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Are there any disadvantages to switching from a punch-down distribution box to an RJ-45 one?

Yes, you can pull out your existing telco punchdown block and replace it with a suitable block for Ethernet networking. What you're really looking for is a Cat 5e (or better), T-568A or T-568B ...
Craig Tullis's user avatar
  • 5,954
6 votes

How to put telephone plate back to the wall

I would just drill two holes into the tile and use plastic anchors to face mount it to the tiles. Raise it up slightly so the wires are in the recessed portion. I wouldn't think super glue would ...
Gary Bak's user avatar
  • 1,236
6 votes
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Does anyone know if this is a Ethernet jack or a phone line?

I'd say it's a six-conductor eight-pin RJ-type connector, which means it is not Ethernet. It's likely a (multi-line?) phone connection.
Daniel Griscom's user avatar
6 votes

What's the right way of removing an indoor telephone line?

Cut it off at the floor level and push it down; out of sight, out of mind is applicable and safe in this situation. If you are sincere in regards to your question title: What's the right way of ...
MonkeyZeus's user avatar
  • 16.8k
6 votes

What's the right way of removing an indoor telephone line?

If you can find the other end of the cable (where it connects to the line coming in from the road) and disconnect it before you cut through the cable, that might be a good idea. That way if the cut ...
Robb Smith's user avatar
6 votes

Adapting RJ-45 to RJ-11?

They plug right in If you wire the blue pair (4,5) for phone service (or the blue and green (3,6) pairs for fancy two-line phones.) No adapter is needed. I do it at work all the time (my employer's ...
Ecnerwal's user avatar
  • 221k
6 votes

Am I OK cutting an unused cable TV incoming service cable attached to my house?

It's not your property. If you damage it you are liable. However, why do you talk about "cutting" it? It is very simple to disconnect it. And that way, you will not damage it. You can then ...
John Pankowicz's user avatar
5 votes

Laying your own telephone cable (from demarcation point)

Step 1: Bring your router to the demarc point and verify that it works there. You did not mention if you had done this, but if not, you should, as the whole point of a demarc is to say: "If it does ...
Ecnerwal's user avatar
  • 221k
5 votes

What's the right way of removing an indoor telephone line?

Land-lines have been on their way out for years now. It may be prudent to keep at least one telephone jack working, but there's no requirement for a phone handset in every room of the house. I don't ...
user3757614's user avatar
  • 2,512
5 votes

Wiring Ethernet through Telephone Cable

You can't do that. Modern ethernet requires point to point connections, not bus topology. And it is quite likely that since your telephone was wired bus topology that the wire quality is inadequate to ...
NoSparksPlease's user avatar
5 votes

Wiring Ethernet through Telephone Cable

If I can weigh in here. I have only used cat5 and up in my professional life, but we did do some hacks in a pinch. If you give more info (why you do it this way, photos of cables etc) I could be more ...
Manie Besselaar's user avatar

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