Telephone Jacks and Plugs. RJ11, RJ14 & RJ25

[@carynlgillette]

This was really informational!! I'm attempting to set up an old Western Electric rotary wall phone in a 1950's farm house and the video was the best so far in explaining the differences in what I might find in the wiring and how to make sure it's wired to match the phone. Much appreciated!!

[@stephenperrault]

Wow man. Sometimes it just takes someone breaking it back down for the light bulb to go off. I've inched my way around data and telecommunications for almost 8 years in high volume, commercial infrastructure. Building COM rooms from bolting the rack to freshly poured concrete to terminating Unicam fiber optic cable and constructing LIU's and as sad as it is to say, I never had the basic POTS line explained to me. Thank you.

[@leoorellana6472]

Thank you this was very well done I am preparing for my a+ exam and my textbook mentioned these standards but did not explain them.

[@PranavShastryOnline]

Very very creative and informative. SuperbbBBBB!!! Job

[@Kunstentech]

GREAT Video sir

[@yyz2tip]

Thank you very good video keep it up ......................

[@Jfbegood2yourself]

Nice work! Would you mind sharing that document with me? Having used phone wire as network cable, have you noticed any loss in performance being that your cable housing lacks shielding?

[@imaginarydreamer5769]

my isp provided cable for routers to micro filter only have 2 pin but really slow internet speeds up when i use a 6p6c cable or a 6p4c cable try to speed my mum's internet but worried it could be dangerous as the micro filter only has 2 contacts

[@shy1820]

Thanks a lot

[@Jnglfvr]

I don't get it. At 2:56 pin 3 (from the right) is red in the diagram but is green in the picture. If you rotate the pic of the plug 180 degrees about the vertical axis pin 3 is green and pin 4 is red.

[@otd80]

Easy to get confused. The JACK drawing upper left shows the pin POSITIONS looking into the JACK. The photo (pink plastic) JACK only has PINS in POSITIONS 2-3-4-5 counting from left to right. When the PLUG (photo) is pushed into the pink JACK its #3 (red) contact will mate to PIN 3 of the pink 6P4C JACK and the green will mate to PIN 4 of the pink 6P4C JACK. The PLUG drawing on the lower left shows it coming toward you (note the locking tab on the bottom) and will be rotated in order to be inserted into the upper left drawing or the pink 6P4C JACK. The important thing to keep in mind is the "RJ" designation refers to the JACK and not the PLUG. The PLUG is the thing that is always being shown in "how to do it" vids so it's often assumed to be "backwards." It's unlikely that anyone would still be using old two pair (red/green/black/yellow) cable so most likely a quad would be used (blue/orange/green/brown with white tracers). Blue/white line 1, orange/white line 2, and green/white for line 3 (on an RJ 25 [next page]) 6P6C.

[@mycats7321]

I love how "really old" refers to houses over 20 years. LOL. My house was built in the 40s, it uses the old wiring but I'm trying to update. My goal is to run a single line from the telephone company's box at the front of my house all the way to a room at the back of the house. Currently it comes up through the floor (house is on stilts) & goes to floating jack then from there I run it to a surge protector & from the surge protector to the phone. (Previously had it straight from jack to phone but a thunderstorm / power surge fried the phone). I think it's a 2 outlet jack so I have an old corded phone that works when the power is out & a base w/ cordless phone that has auxiliary handsets. I think the new setup I will run to the surge protector then out & have a splitter to the two phones. Would that be ok? I go off on tangents a lot too so it's all good. :-) I'm going to use 24/4 indoor/outdoor cat5e cable & wire it into the RJ11 pod/connector. Cellular isn't an option where I live. I can't get signal so I need a landline. Mine is currently out & AT&T has no intention of improving the cellular in my area anytime soon.

[@mycats7321]

@Paul Jameson I got it done a long time ago. Thanks though.

[@Tony_417]

Is there any issue with still wiring the wires for a 3rd phone line even if it isn’t being used now? I’m thinking about renting my house out so it’s more for someone else to use in the future if they need it. Any harm in still wiring an unused 3rd line?

[@otd80]

The standard modular wall jack (6P4C) does not normally have any metal contacts in Positions 1&6 so they would have to be replaced with a 6P6C one in order to physically support three simultaneous lines.

[@subi-brz]

Is there a difference between a 2pin RJ11 and 6pin ? Performance wise ?

[@otd80]

Not sure of your question. The RJ11 designation is a specific (2wire) APPLICATION for supporting a single 2wire POTS phone line on a 6 position receptacle. It only requires 2 (metal) contact pins in positions 3&4 of the receptacle to support this single line APPLICATION. When you buy a 6P jack (unless special ordered) at your local hardware store, the little un-wired plastic units actually have metal contact pins in positions 2, 3, 4 and 5 with no metal contact pins in positions 1 and 6. This is then correctly called a 6Position4Contact jack. Unfortunately the dimwit manufacturers inevitably label the little baggies the un-wired jacks come in as RJ11's instead of 6P4C's. If you decide to add a second phone line to this jack, it will use existing P/C's 2&5 and suddenly (POOF!), become designated as a RJ14 APPLICATION. To use this same size 6P jack for 3 phone lines you will have to special order them to get ones with metal Contacts in Positions 1&6 with the designation 6P6C. When you wire this to a third phone line the plastic jack (POOF!), supports an RJ25 APPLICATION. The manufacture mislabeling of 8P8C's is even dumber, but that's a rant I deal with on a different video.

[@CalvertFitness]

I just bought a desktop touch tone phone abs three Jack on the side is too skinny for a standard plug. Why abs how can I still use? Thanks

[@otd80]

Not sure what you mean by "a standard plug", or ABS, but if you mean the RJ9 4P4C (four pin/four connector) on the side of an old Bell System desk phone you can get them (and variations with adapters) on Ebay or Amazon.

[@CalvertFitness]

Turns out I’m a moron and the person I bought the phone from have the headset plugged into the rear and not the side of the phone. Headsets plug is narrower than a standard.

[@DxMrtx]

very helpful

[@otd80]

Dx Mx Thank you. That's what we try to do with all our vids, glad to be of service.

[@serkanozkan8793]

thanks man

[@OldLordSpeedy]

But you forget to say or write that this works only in *your* country, could it possible the U.S.A. Here in Germany it is so not possible or allowed. I use a PBX here. ;-)

[@stephenperrault]

I'd like to hear more about the voltage and wiring in Europe.

[@dimrosaroso1928]

Hi! Hope anyone could enlighten me with this.. I'm trying to make an adapter from Female RJ10 4P4C to Male Audio/Mic, but I am not sure if this is possible.. I would like to know if the cabling or pinning will still be like 1-BLACK 2-RED 3-GREEN 4-YELLOW WHICH FOR MICROPHONE: 1-BLACK 4-YELLOW FOR AUDIO OUT: 2-RED 3-GREEN I am actually trying to use my headset with RJ10 PLUG, that's why i'm thinking of making the adapter my self since I have all the equipment needed.. Also I'm opting to use the cable of my old headset with microphone and volume control for the Audio/Mic Jack, but I'm having a hard time searching if where to specifically attach the cable from RJ10 to the small-motherboard of my old headset cable. Please enlighten me folks.. Thanks ahead of time...

[@toddboss304]

how do I connect a phone line to a rca jack?

[@AndrewSimpsoncrashed]

is there a way i can get your presentation so i can print it out for my own reference?

[@otd80]

Hello, We don't have a hard copy of the info. We would suggest that you hit the print screen button when you want to save the info. Thank you

[@swissworld4919]

Am Eli please I need help

[@robertmattison1282]

Lave the phone off the hock that way no one can call in.