House Phone Line Wiring
How to Wire a Telephone
This wikiHow teaches you how to wire a landline telephone from your home's phone box (also known as a Network Interface Device) to your home's telephone jack. While most phone companies will perform this task for you, it is often cheaper to complete the installation yourself.
Enabling a Landline Jack
Locate the Network Interface Device box on the outside of your house.This is a gray or tan box that measures roughly 8 inches by 12 inches. The Network Interface Device box is where the telephone wire from the phone company terminates, and also where the phone wiring going into the house will connect to your landline phone.
Open the box.You may need to open an additional compartment labeled "Customer Access" as well. Inside, you will notice modular plugs and two screws. The plugs look just like the phone jack that you plug your phone into inside of your house.
- There will be a line plugged into each modular plug for each phone company line that runs to your house.
- The pair of screw posts will contain one red screw and one green screw. These posts are where your new wiring will connect to the phone company wiring.
Unplug the phone company line.Before you begin your wiring project, you'll need to unplug the phone company line that is plugged into the jack inside the box. This is just a safety precaution, as it will disconnect the power flowing from the phone company line.
- This line must be plugged back in once you've completed the wiring.
Install your telephone jack if necessary.If you don't have a telephone jack and cable installed in your house, follow the steps in the linked article. This will allow you to install your telephone jack along with the cable that you'll use to connect to the Network Interface Device box.
- If you already have a telephone jack in your house, skip this step.
- If you have a telephone jack but no cable, follow the linked article's steps to connect one end of a telephone cable to the telephone jack.
Run the telephone wire back to your Network Interface Device box.This part is entirely up to you; some landline users opt to run the wires through the walls, while others choose to run the wire out through the attic or the foundation and then along the side of the house.
Attach the telephone jack to your Network Interface Device box.You'll use the colored screw sections in the Network Interface Box to do this:
- Clip the end of the phone cable off.
- Strip an inch off of the end of each of the colored wires.
- Separate the green wire and the red wire.
- Unscrew the red connector screw and the green connector screw (or both of the screws in the "Line 1" area).
- Wrap the red wire's bare section around the red connector's screw, then repeat with the green wire and the green connector.
- Re-tighten the screws.
Plug the company line back in.It should plug back into the port into which it was initially inserted. At this point, your landline is active; you can now proceed with attaching your landline phone.
- You may have to call the company and request that they activate your phone line before you can use your landline.
Hooking up Your Phone
Plug a telephone wire into the telephone jack.The telephone wire should connect just like the company phone line's connector attached to the Network Interface Device box; you'll hear a soft click when the connector is in place.
Attach the other end of the wire to your landline's receiver.Place your landline phone's receiver near the telephone jack, then plug the free end of the wire into the "Line 1" port on the back of the receiver.
- Unless otherwise specified by your phone's manufacturer, avoid using the "Line 2" or other ports on the back of the receiver.
Attach your landline's receiver to your router if necessary.Some landline phones (e.g., CenturyLink landlines) must be connected to an Internet router before you can use them. You'll use an Ethernet cable to connect the "Internet" port on your receiver to any free port on the back of your router.
- Skip this step if your phone doesn't have an "Internet" port.
Plug your receiver into a power outlet.Using the power cable which came with your landline's receiver, plug one end of the cable into an electrical outlet and then plug the other end into the "Power" port on the back of the receiver.
- Your phone receiver may have a built-in power cable. If so, just plug the free end of the cable into an electrical outlet.
Test your phone.If your phone is properly wired and your phone company has activated service for your landline, you should hear a dial tone when you pick up the phone. At this point, you're free to make a call or set up your landline phone based on its manual.
QuestionHow do I hook up my new phone line to the phone company's box outside?wikiHow ContributorCommunity AnswerIf the box in question only has two possible connections, just plug a RJ11 jack into the one marked Line 1. If there are more, you would be well advised to ask your phone company to send out a technician.Thanks!
QuestionThe cable has 4 wires. However, only 2 are used. Which ones do I connect?wikiHow ContributorCommunity AnswerTypical colors that go together are red/green and yellow/black. As long as you use the same colors on both ends, it doesn't matter.Thanks!
QuestionHow do I check the wire for voltage?wikiHow ContributorCommunity AnswerYou could use a multimeter. Touch one of the wires of the multimeter to the phone wire, then touch the other one to another port on the phone, or even to another part of the wire, at about 10 cms apart.Thanks!
QuestionI have an old phone. How do I wire it to a new phone line?wikiHow ContributorCommunity AnswerAll you need is to conect two wires -- RX&TX, marked on the telephone terminal -- to the telephone socket (also marked TX&RX ), then plug in to the new phone line.Thanks!
QuestionWhat do I do if my phone has no dial tone?Top AnswererMake sure the wiring is not loose, and try the phone in a different jack. If that is not the case, try plugging in a different phone. If that fixes the problem, you will need to get a new phone. If that is not the issue still, contact your telephone service provider.Thanks!
QuestionHow do I connect blue and white wires to red, green, yellow, and black wires?wikiHow ContributorCommunity AnswerWith a soldering iron and some solder would be the most reliable option. Or turn off the electricity and wrap the metal of the wires around each other -- this option will be easy but may be slightly unsafe and won't last if it gets knocked.Thanks!
Where can I find a diagram to show how to connect the wires in a junction box?
What do I do if my phone isn't ringing?
I have an internet line fully joined with router and computer. Can I install an additional modem on the same line without disturbing original settings?
How do I wire the box that I plug into the phone?
What do you do when you get a basic house phone?
- If the telephone company has not done maintenance on your home phone line for several years, you may have an older phone box that preceded the Network Interface Device. The older boxes are simply plastic or metal covers which are screwed on to the telephone wiring box to protect it from the elements.
- If you discover that you have an older phone box, contact the phone company. They will usually come to your home and replace the older box with an updated box at no cost to you.
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