First step
The first step to a little phone wiring is to figure out what the phone company has left you to work with. What is your network interface? They probably left you with either a punch block or a network interface. If there is a blockage and you cannot get the telephone company to install a modular jack for each POTS or CO line, you will need an extension tool. telephone wire to the interface. Most new installations consist of a network interface box. It has modular test jacks (where you can plug your phone in to check if the phone line is live) and a terminal block from where you run your internal phone wire.
Telephone line wiring
From the network interface, you want to plan how you want the wiring to be in your location. The star method (or home run) is the most common method of telephone wiring. Each extension or telephone jack runs directly from the network interface or telephone system if you install it. Another type of connection is called the serial (or loopback) method. In this method, a 1-line telephone wire connects all extensions in the series. This loop method is no longer widely used. As with the old Christmas lights, if one goes out, they all go out.
Using the star method, you will obviously need multiple wires coming from your network interface, since you will have one wire for each of your plugs. You may want to simplify wiring and reduce wiring costs if multiple wires will carry more than one line or extension.
Take, for example, a two-line installation. Each pair consisting of each of your POTS lines must be labeled. See phone connection diagram below
One of the wires on your POTS line is called the lug and the other is called the ring wire. There are quite a few possible color combinations that can make your pair. To connect your line to a modular jack, you need to connect the wire end of the POTS line to the lug of the jack, and the ring wire of the POTS line to the ring wire of the jack.
In a modular jack, you have red/green and yellow/black. In most cases, you only use the red/green pair. The green wire is the tip and the red wire is the ring. Using the table, determine which of the POTS wires is the ring and which is the lug, and connect them properly.
If you are not using the telephone system but simply want to connect your telephone jacks directly to the telephone lines, all you have to do is run a wire from the network interface to the extension jacks. This works the same way when you connect your phone system's expansion connectors to your expansions. Just plug in the right colors to get the wire going. Reattach tip to tip and ring to ring. As long as you're following the tip-to-tip rule, the fact that you're connecting the white wire with brown stripes to the green wire and the brown wire with white stripes to the red wire shouldn't be confusing.
Remember that you can run two or more lines within the same telephone wire to reduce labor and materials. At the end of the wire, you can break the two lines with an adapter that allows you to connect line 1 to an RJ-11 plug and line 2 to another RJ-11 plug; or, if you have a phone with two lines, you can simply connect an RJ-14 plug to it.
If you are using a small PBX or telephone system, it is likely that the POTS lines (commonly referred to as trunks) are connected to the system using RJ-11 connectors. If your network interface ends with a modular jack, then the job is simple: just connect the phone system using the RJ-11 connectors. If your network interface has a terminal block (the place where the pairs that make up each POTS line terminate at the junction where you directly connect the colored wires), you will need to either connect the lines directly to the PBX or connect a modular to each of the POTS lines on strip. Then to
connect the phone jacks, follow the same procedure as above to connect the phone lines directly to the phone jacks.
For your reference, below is the telephone connection diagram.
