How To Use A Single Cat5 Cable For Both Phone and Ethernet

In this video I revisit my most popular blog post at www.mavromatic.com. It seems like many homes only have a single CAT5 cable run to a location. That has meant that location can only serve one network or a single phone connection.
With the method shown in this video, now you can have both. The only caveat is that this will derate the potential max speed of up to 1000Mbps (Gigabit) down to 100Mbps. For most applications 100Mbps is more than enough but if you have a Gigabit switch use discretion.
Hope you enjoy this video and please support me by subscribing to my channel and liking this video.
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Tools used in this video:
* Wiha 32092 Slotted And Phillips Insulated Screwdriver Set, 1000 Volt, 6 Piece (amzn.to/28sPXXv)
* Ideal Punchmaster II Tool 110 Blade (amzn.to/28sQmcq)
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[@chrisvax7009]

greetings from greece finally i found a video that shows me how its done!

[@lrspahn1974]

PERFECT....PERFECT explanation of home internet... thank you.... anything on getting an internet signal to an external garage with only a home power (AC) connection....

[@Iceberg86300]

Powerline network or wireless backhaul. You can also bury CAT whatever or even fiber depending on the run. I don't know your needs but I'd _try_ powerline first. Wireless backhaul would be a very distant last resort for me, but could be just the ticket for you. One example (I've used an older version successfully): www.tp-link.com/us/home-networking/powerline/tl-pa9020p-kit/ They also have models with an access point or wifi extender built in. Never used those though. Oh. Forgot. Performance or whether or not they will even work at all is dictated by your wiring. I've had adjacent plugs not see each other & I've also had one instance of being able to share internet with the neighbors. The various manufacturers give you an idea of scenario's where they will/won't work, but I've found you just have to try them to find out. All of the recent ones have security & encryption so you can set up separate networks/links & also to keep neighbor's off your network if the signal does indeed make it that far. Separate network use scenario: I was already using AV1200 powerline for a situation like yours when I switched from DSL to cable. Satellite was occupying existing coax & the A-holes refused to pull some new coax on what was a very easy run & couldn't have put the cable modem in a worse location if they tried compared to where I needed it for my WiFi router. I couldn't do it myself b/c I had just undergone spinal fusion so I picked up two additional single port AV1200 powerline adapters, "locked" them together, and used that as my modem/router uplink. But powerline bandwidth is shared & you have no say in how it's split beyond some very simple QoS settings. So it cut my original powerline link from 600Mbps to a fairly solid 225Mbps & the router uplink hovered around 200-250Mbps. Which sucked b/c I only had 60Mbps internet at the time & easily saturated the link on the LAN. But it was still a God send for me at the time, though. So anyway, yeah. Might be perfect, might be worthless, and might be just good enough for you.

[@jjjww975]

Thanks for posting this -- I'm moving my DSL line down in my basement where evey thing else is ...the builders put it up in the ceiling running with WIRES and my signal keeps dropping ... SO, I ran NEW lines - I needed to know how to hook these up. I do not have a home phone - so -- this is a informative video !!!

[@CryptoGuru369]

Thank you very, very, much for uploading this tutorial! Much appreciated!

[@madduxclayton9047]

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[@zavierluciano2317]

@Maddux Clayton Instablaster :)

[@madduxclayton9047]

@Zavier Luciano i really appreciate your reply. I found the site through google and im in the hacking process atm. Looks like it's gonna take quite some time so I will get back to you later when my account password hopefully is recovered.

[@madduxclayton9047]

@Zavier Luciano It worked and I finally got access to my account again. I'm so happy:D Thanks so much you really help me out !

[@zavierluciano2317]

@Maddux Clayton No problem xD

[@kirkbrown8379]

Hi Danny, could you please provide a link to the face plates in the video. They are so neat

[@MindoverX]

Hey thanks for the tips! Well done!

[@Mavromatic]

+John Douglas (MINDovrX) Thanks John!

[@debbuffleben4749]

Hi! My dog ate my ATT cat5e cable that goes into my phone jack. Is this video, which was very helpful, who I can rewire the cat5e to fit into my phone jack for my internet?

[@sleepwalker0335]

Thank you very much for making this video. I was a confused with the wiring the telephone and network cables in my home. You are very clear and informative.

[@azmendozafamily]

Great video! I am going to rewire my home and wanted to add phone and ethernet. I thought I needed to run RJ11 and Ethernet separated

[@e30clew]

You do need to do that. You will otherwise get 100 Mbit instead of 1 Gbit and that doesn't cut it anymore, way too slow. There is twisted pair cables with 6 pairs inside, allowing you to split it in the end for phone and ethernet, so you only need to run one cable. Also don't do the mistake I did the first time when I laid ethernet cable next to a power cable in the same pipe, that lead to massive packet loss and 600 Mbit instead of 1 gbit... Keep them separated as far as possible to minimize interference!

[@DHnet259]

After you make this modification is it possible to run PoE on the CAT5 cable to power an access point or other device?

[@stevepol613]

TP link Deco mesh Wifi uses daisy chain for its access points this is great , because now I can make the same cable in and out

[@Infinity323Gaming]

Hi, I'm kinda confused on how ethernet in can be split into ethernet out and phone out? Is this a VoIP thing?

[@doctorpaully]

Hi Danny is there a switch or router that you would recommend to split a cat 5 line into 3 or 4 computers?

[@Mavromatic]

Hi! you just need a simple switch to take 1 cat 5 line and connect up to 4 other devices, something like this: amzn.to/2wzEF6O -- there are more expensive switches but for home use something like this should be fine.

[@nate.464]

due to phone provider they will not run my phone or internet to my other home (500) ft away have to run phone and internet to t from the old home. how would i got about doing this

[@billb6744]

Am I to understand that I can use ONE CAT5 cable for a phone AND an ethernet line at the same time?? I want to install a WiFi Mesh in my house which was wired 20 years ago with a single CAT5 cable to each room. I would like to use the CAT5 line to "backhaul" my satellite nodes to the main node in a couple rooms but I have a dial tone on every line. Is this possible to do? Any suggestions would be greatly appreciated.

[@karlkaufman2659]

Decide whether you really *need* the dial tone everywhere and repurpose some of the Cat5 strictly for networking. As the video highlights (Inthink), running both gives you only 4 wires for Ethernet, so the line will be limited to Fast Ethernet’s 100 Mbps; dedicating all 8 wires of the line to Ethernet should get you 1000 Mbps.

[@JAG_UAR]

Hello there, my exsiting room have rj45 jack for phone , so how i can connect two phones on that single rj45 port? isit working if i use 5 port switch ?(networktype normal)

[@karlkaufman2659]

If you want two phones using the same line, just get a phone splitter. As ONE example (likely overkill): www.amazon.com/CIMPLE-CO-Telephone-Separator-Conductor/dp/B01N4S8WG4/

[@rikka0_059]

Is it possible to run both gigabit ethernet and telephone line over a single cat5 8 core cable? I just realized that in any network interface (10m, 100m, 1000m), there is a transformer sit between the internal circuit and twisted pairs(8 wires), any given pair should be electrically isolated from other pairs, so can we run another signal across them(4 twisted pairs used as 4 wires to carry the phone signal)?

[@e30clew]

No, but you can get a 12 core (6 pair) cable to run, so you could have 1 gbit and phone! And use CAT 6, isnt much more expensive nowadays.

[@JO-vf8ql]

what wires for this?@@e30clew

[@dahlhouseEH]

even if your DSL modem is mounted beside the cable modem, you terminate with both an RJ11 and Rj45 on the same cat5 cable? how do you crimp those heads with no coax sheath? you'd need the same keystones on the other end to plug into the modems... how is this "easier"... just run another cat5 thru the wall.

[@martinminadeo4155]

How do you tap that to the dmark?

[@panagiotismastroperros2032]

hi Danny, there is any external adaptor nowadays that I can apply? I have a Cat 6 socket but I want to plug a telephone and i dont want to open the socket, i am looking for an external. thanks

[@karlkaufman2659]

Yes, I’m looking for the same external/adapter alternative for quickly altering the purpose of a given line without rewiring the cable, already terminated on both ends to TJ45 jacks using the T558A standard. I’ve found a few options on Amazon: * www.amazon.com/gp/aw/d/B09MHX1VLT/ * www.amazon.com/gp/aw/d/B08L21DYWP/ Would love to see a combo phone/FastE adapter, but that’s probably too specific. Can probably find the parts to DIY it, though it likely won’t be as clean as a manufactured item.

[@karlkaufman2659]

Here’s one… www.lanshack.com/QuickTreX-VoiceData-Splitter-Pair-P1564

[@sanclementetrojan]

will this also work with a regular cat 5 line not a cat 5e? and what is the mode number of the punch. thank you!

[@Mavromatic]

Sure does!

[@sanclementetrojan]

@@Mavromatic no cross talk? and if there is, is it from phone to data or data to phone? thanks again.

[@Mavromatic]

@@sanclementetrojan None. I have had no issues with cross-talk and network and phone both work great.

[@jayhendricks67]

5e is just Faster everything else is the same

[@brnzhut]

The diagram you showing is 568B, not 568A. Starting with white green green is 568A, white orange orange is 568B

[@jayhendricks67]

Yeah With 568 B the Green pairs are Spilt & A the Orange pairs are split if you're making patch cables has it backwards I think In England they use 568A

[@bobesfanchi]

Hi Danny, are you aware of an off the shelf component that can do this without me messing with the wires? Thanks

[@Mavromatic]

Hi! I think this is one: www.dualcomm.com/products/rj45-rj11-splitter-cable-sharing-kit-for-ethernet-and-phone-lines

[@karlkaufman2659]

Just what I was imagining, but that price is a DIY inspiration.

[@karlkaufman2659]

Alternative: www.lanshack.com/QuickTreX-VoiceData-Splitter-Pair-P1564

[@mackybalbes8250]

Sir . Is it okay to use cat5e wire in the telephone socket? #Beginner here.thanks😁

[@Mavromatic]

Hi! You sure can -- cat5e will work for lots of different applications including Plain Old Telephone Service ("POTS").

[@giandeguzman6402]

wouldnt this cause interference on the line being that they are on the same highway

[@agent0mentality]

I am trying to do this and it is not working for me and I do not understand why

[@pete2814]

what color do i use to separate phone and fax.....cat5e

[@Mavromatic]

Hi! phone and fax use the same POTS (Plain old telephone service) so they only need 1 pair per line. So phone/fax would work as I have it in the video if it shares the same phone line (e.g. line 1). That said, some setups use 2 lines, one for fax and one for phone. If that is the case, you use 2 pairs as I have also shown. Let me know if that helps clarify things... @4:41 I show the wire coloring for line 1 and line 2. Also, depending on the fax machine, it can select which line it uses (1 vs 2)

[@myearth5886]

How do I connect help me out pls

[@322ziggey]

does the voltage from phone ever interfere with with data cables? even with the jacketing. thats why they made cat 6 with the with the built in shield right?

[@Mavromatic]

Hi! That typically isn't an issue given the design of the cable (twisted pairs, google it for more details) resists noise. As one commenter noted, it's better to keep the twists tighter to the connection -- that provides better noise/signal integrity.

[@jayhendricks67]

Keep the twist 🪢 up until the terminal for faster speeds shielded cable is to block electromagnetic flux from other electrical devices Cat6 is just as fast as Single Mode Fiber

[@elyh777]

Do I need to do anything on the modem side of the cat5?

[@Mavromatic]

Nope... should work as is if your wiring isn’t crossed.

[@elyh777]

Thanks!

[@JO-vf8ql]

will your data still do 1000base t?

[@Mavromatic]

No, you will be limited to 10/100 also, PoE will not be supported.

[@Chicagoman36]

Where did you get your Fiber Optical Cable?

[@Mavromatic]

+Chicagoman36 Hi, it was available when I was building as a bundle like this: www.smarthome.com/2-cat-5e-2-rg6-quad-2-fiber-jacket.html

[@Chicagoman36]

Thanks That Ones Unavailable Now, Remodeling my place want to put it all in before i sheet rock!!! Prepaired for anything everything that might come up :)

[@Mavromatic]

Chicagoman36 this place has similar: www.primuscable.com/store/p/8323-Bundled-Cable-2x-CAT5E-2x-RG6-1x-2-Fiber-Yellow-PVC-500ft.aspx.

[@Chicagoman36]

Thank You Very Much!!!

[@blanenoel4231]

Sold this and Jack I know how it works!

[@kevings1150]

This might fly in your own home but in a commercial or industrial setting this is bad advice. The end user would never be able to convert to VOIP or run 1000baseT on that split data jack.

[@Mavromatic]

That is correct.

[@adamjhuber]

It wont run 1000baseT, but it will run VoIP phones no problem.

[@deepakvvs]

I think you have messed up your T568A and T568B standards.

[@dd92727]

Dude never wire cat5 for anyone. This is a good video of how not to terminate cat5. You untwisted the pairs the pairs for way too long.

[@azmendozafamily]

Keep the twist close to the actual plu, got it.

[@jensschroder8214]

this only works with 100Base-t reduced speed not with 1000Base-t and 2500Base-t

[@myearth5886]

My switch as 4 colours blue green red yellow My cable as black green red yellow with white with each

[@mikee12321]

if you wired as labelled in your diagram with red matching white/blue and green matching blue it isn't going to work.. red=ring green=tip blue=ring white/blue=tip = line 1.. black= tip yellow= ring , wite/brown=tip brown=ring.. the 6pin connector has 3 pairs and the colour coding excludes brown as brown is the 4th pair. It allows fpr 3 phone lines.. The ouyermost being line 3 = pin 1,6 line 2= pin 2,5 line 1= pin 3,4 line 1 is always red and green which goes on the innermost pins= pin 3 and 4.. red= ring = blue = pin 3 and green= tip= white/blue= pin 4

[@karlkaufman2659]

I think what you’re saying applies to using a Cat5e+ line wired to T568A for a phone connection. The video really only adheres to the standard for the Fast Ethernet RJ45 connection; as explained, for the phone jack, the brown wires are connected per the orange color mappings on the RJ11/RJ25 jack.

[@robjavmer84]

If you want fast internet in your home, don’t do this. You’ll limit yourself to 100Mbps - ISP connections are much faster than that these days.

[@e30clew]

1. Use CAT 6, barely any difference in cost. 2. 100 mbit is way to slow, wifi is faster than that nowadays. 10 gbit via ethernet cable is getting to the point where its feasible to buy for your home network. I run a used 10 gbit switch and network cards from ebay for a couple of hundred of dollars in total via regular CAT 6 cables, works fine. The longest cable is 30m and it maxes out at about 800mbit. Normal UTP CAT6, nothing fancy. 3. If you have a single cable now, it's probably put in pipes inside the wall which makes it easy to pull though an extra. 4. There exists twisted pair cables with everything from 2 to hundreds of pairs, if you only can fit one cable, run one with fe. 12 cables (6 pairs) and split it in the end to ethernet and phone. 5. Who the heck even uses landline phones or faxes anymore?

[@roberte.6892]

do i understand correctly that with this setup though, your data connection will be slower or have less bandwidth because the data jack (rj45) isnt connected to all of the possible wires in the cat5e cable?