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I recently bought a house with RJ-45 and RJ-11 on one wall plate, and coax for TV on the other plate in a single box in each bedroom. I opened one up, and it looks like they did not run individual Cat 5 from each one but instead have Daisy chained from outlet to outlet, using a single Cat 5 for both the telephone and the internet. It terminates into a single Cat 5 in the garage which is currently wired to nothing, no connector or anything.
From some research online, it seems like this should work for 10/100 in theory, but clearly not the ideal way to set it up. I don't care about the telephone RJ-11 but I would like to get the Ethernet working if possible.
What I'm trying to figure out is how to attach an RJ-45 end to the cable in the garage since not all wires are being used. Do I simply put the same colors in the same location on the RJ-45 and the switch I will plug it into in the garage will know what to do with it? Also will a simple 8-port switch behind my Google Wi-Fi router be enough to negotiate all of the outlets?
I've attached a picture of it below; hopefully it shows enough. It does appear they only used two wires for Ethernet, but I need to take a closer look since I don't think it's possible for that to work.
Any suggestions are appreciated!
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With regards to the answer of @Agent_L , you should see this post about ways to join ethernet cable: https://superuser.com/questions/700490/joining-two-ethernet-cables-strip-and-solder-or-buy-an-adapter
– Craig Hicks – 2017-08-18T17:09:00.963I'm vaguely recalling that there was once a short-lived twisted-pair version of the 10Base-2/10Base-5 parallel-wired scheme. I doubt that you can find equipment for it anymore, though. – Daniel R Hicks – 2017-08-19T19:41:19.987
I find that Ethernet cable which has been used for phone in this way often has many unseen sections that are also not category compliant, such as: extended sections of untwisted pairs, kinks, splices (always really bad ones too), etc. Ethernet is a high performance protocol that works its media to the limits. The cables are difficult to test. Do yourself a favor and run new cable if you can! – trognanders – 2017-08-19T20:55:53.210