Telephone cable pinout “4 cores. Crimping twisted pair

To begin with, I want to say right away that for comfortable work related to crimping, it is advisable to use a tool like this:

And to strip the cable it is advisable to use:

If the above is not available, then you can use a knife and hammer

And of course you will need connectors and cable

Crimping twisted pair

To crimp a twisted pair cable (Internet cable), you will need RJ-45 connectors

If you are using an 8 core cable. 8 cores are used to obtain a speed of 1 gigabit over the network. Then the layout is as follows:

From left to right.

Here's a great image I found on the Internet:

I also want to note that this pinout is straight. And it is used in overwhelming cases. And there is also cross pinout. It was used to connect exactly two PCs. This is no longer the case today. Yes, and modern routers and switches can turn the cross into a straight cable. I'll provide the pinout just in case. In case someone needs it

If you are using a 4 core cable. Then the layout is as follows:

From left to right.

In this layout, you can use any pairs of colors, the main thing is that the cores in different connectors were in their places.

Telephone cable cable crimping

To crimp a telephone cable, you will need RJ-11 or RJ-12 connectors

For a home, as a rule, RJ-11 with 2 cores is sufficient. You can put any pair there. The main thing is that the connectors are in the correct ports.

For example:

1) White orange 2) Orange

For an office where there are IP phones or digital phones, use RJ-12 with 4 cores. You can also put in any pair there.

For example:

1) White-orange 2) Orange 3) White-green 4) Green

Remember how the numbers are located. When connecting the outlet, they will help us navigate

Now let's look at the sockets

How to connect an outlet to a router

We have already figured out how to crimp the connector. Now you need to connect the socket on the other side of the cable

Here's the outlet:

You need to use pinout B in it, and just plug the wires of the corresponding color there

Making an extension cord from a double RJ-45 socket

And finally the RJ-12 socket

Please note that in this socket the guides can be installed in any order

Everything is more than clear here

1) If you need to connect a home phone with an RJ-11 connector. Then we connect 2 wires (any) to the 2nd and 3rd wires in the socket 2) If you need to connect a home telephone with an RJ-12 connector. Then we connect 4 wires to all the wires in the socket. Here you need to connect

I won’t describe in detail how to connect the split or how to make an extension cord from such a box. Because everything is clear in the diagram

Despite the fact that the world has almost completely switched to cellular communications, wired telephony still occupies a huge market share. Moreover, directly with its help, Internet access using ADSL and SHDSL technologies is organized in small towns and rural areas. And while the crisis is gaining momentum, there is no need to wait for the transition to fiber optics. At the same time, very often in residential buildings, as well as in various institutions, room wiring is in an unsatisfactory condition: the telephone cord is pinched by chairs, crushed by heels, cats, dogs and even drunk people chew it (this is not a joke, but a real case from practices). Therefore, at some point, the question arises of replacing the wire with a new one, for which they usually call an installer and pay money. All this can be done without the help of others, the main thing is to get a suitable tool and purchase a wire of the appropriate length. But very often everything comes up at the moment when it is necessary to crimp the telephone cable into the RJ-11 connector. We will talk about this procedure at the moment.

What do we need?

Firstly, the telephone cable itself is 2- or 4-wire. Personally, I don’t like the SHTLP telephone cable (aka CLT) due to the fact that I didn’t live there alone and if you need to make twisting, then from time to time you’ll have a hard time with it. Therefore, in my practice I try to use a cable for signaling KSPV-2 or KSPV-4. There are no problems with crimping it either. Secondly, we will need a stripping tool in the form of a stationery or construction knife. 3rd; crimping Tools. By the way, many of them, like mine for example, also have a special knife for cutting cables. Well, RJ-11 connectors, of course, into which we will crimp the telephone cable for the Internet or wired telephone.

Sequencing:

We strip the end of the telephone wire from the outer braid, about half a centimeter:

There is no need to strip the cores themselves; they will be cut through by the blades of the connector. The cable layout is simple. In ordinary telephony, only 2 wires are used. In the connector; These are the two middle contacts:

With a four-wire wire the situation is a little more complicated. The point here is that abroad, due to the widespread use of mini-PBXs and faxes, the cross-over version of the layout is very often used; in other words, the wires in pairs are swapped (see diagram on the right):

Here in Russia, we use a flat layout, as in the diagram on the left. Therefore, cables that come to us from abroad often have to be re-crimped. After the cable has been cut and prepared; you need to insert the wires all the way into the connector:

From the front side of the connector, make sure that the wires reach the end of the channels:

At this point, carefully insert the connector into the crimping tool and clamp it:

We remove the crimped telephone wire from the crimp and make sure that the knives in the connector go in all the way. If necessary, you can clamp it again. At this point, you understand how you can crimp a telephone cable for the Internet or telephone with your own hands,

Before we begin to discuss the topic, it is necessary to answer the question: what is pinout. For proper switching and data transmission, the cable must be correctly connected to the connector. The process of connecting cable cores to the corresponding connector pin is called pinout. This can be done in two ways: unplug the telephone cable into a socket or do it using special connectors - “jacks”. The first method is currently practically not used, so let’s consider the second.

Telephone cable pinout

The telephone cable is pinned out using RJ-11, RJ-12, RJ-14 and RJ-25 connectors. RJ is an abbreviation for the English words Registered Jack, which literally translates as registered connector. The connector body consists of transparent or translucent plastic, with gold-plated contacts located inside. The RJ-11 interface is typically used for pinouting a “2-core” telephone cable, as it is a 6-position plug with 2 connectors.

RJ-12 is the unofficial name for the RJ-25 interface. Essentially it's the same thing. This interface is a 6-position, 6-pin plug and is used in 6-wire digital telephony. The RJ-14 interface, which has 6 positions and 4 contacts, is also intended for the same purposes. In principle, the pinout of a “2-core” telephone cable can be done with any of the listed connectors, but you need to understand that some of the contacts may not be used.

Telephone cable: color coding

The table below shows the pinout of contacts depending on the color of the cores:

Telephone cable “4 cores”: how to properly crimp the connector

You can do this yourself - the main thing is to get the right tool. As an example, consider crimping a KSPV cable. For this you will need: . brand cable of the required length; . stripping tool (cable cutting knife); . RJ-14 connectors; . crimping Tools.

Operating procedure:

1. Prepare the required connector, telephone cable of the required length and crimping tool (crimper).

2. Using a stripping tool, remove the top insulation approximately 5-7 mm.

3. Push the connector onto the cable until it stops. The color layout of the wires on both ends of the cable must match.

4. Using a crimper, crimp the connector. During the crimping process, the contact knives pierce the core insulation, thereby forming an electrical contact.

5. Remove the cable from the crimp and check the quality of the connection. If necessary, the procedure can be repeated.

Now that the cable is ready, all that remains is to test it. There are two ways: ring with a special tester for connectors or connect the cable to the telephone line and check for the presence of a signal.

is one of the leaders in the sale of cable products and has warehouses located in almost all regions of the Russian Federation. By consulting with the company’s specialists, you can purchase the brand you need at competitive prices.

To connect a landline telephone to a line, you need a working line from the PBX and the ability to connect a telephone to it. Telephones are connected to the line using telephone sockets.

There are several standards for such sockets; they are used for different purposes: connecting one or more telephones, creating leased lines. In apartments, the RJ 11 standard socket is most often used. How to connect a telephone socket of this standard yourself?

Types of equipment

With the development of technology, telephone sets are improved, but in general the principle of their operation remains unchanged. To connect them to the communication line, special sockets are still used.

In Russia, from the 80s until recently, a single standard was used - RTShK-4. Even earlier, wires were connected by simply twisting them together. Now there are several standards.

The development of microprocessor technologies has led to the replacement of RTShK-4 type sockets with others - marked RJ. With their help, you can connect up to four telephones to the line. The abbreviation RJ stands for Registered Jack. There are several standards for telephone sockets with this designation:

RJ 9 - connector that connects the handset to a landline telephone,
RJ 11 - it is the one most often used in residential buildings and apartments, the first standard adopted in the USA, also called the “Euro socket”, has two contacts and connects one telephone,
RJ 14 - often used in office premises, has contacts and 4 wires, is convenient for connecting additional lines - you can connect two telephones with a separate line, in apartments it is rarely used to connect a telephone,
RJ 25 is a model with three pairs of contacts; it is difficult to connect it yourself; it is better to entrust such work to specialists.
RJ 45 is a device with 4 pairs of contacts, it is used to connect computer and telephone networks or connect a telephone to a line.

There are also combined versions of RTShK-4 and RJ 11 with both types of connectors. Such devices are used to connect computer and telephone networks. In addition, they can be used to connect devices with old and new plugs to the network.

There are also RJ 12 sockets, but they are not standard, as Legrand products are designated as RJ11 or RJ 25. TAE type devices are used to connect German and French telephone sets to the line.

How to connect a telephone socket?

Types of connectors
Step-by-step installation instructions
Connection diagrams
Useful tips

Types of connectors

Below are the types of new connectors:

RJ 9 is one of the connectors that is necessary to connect the handset to a stationary device.
RJ 11 – connects one telephone, the most common option, used, as a rule, in multi-apartment residential buildings where there is one telephone line.
RJ 12 - they are not popular in residential buildings, as they have contacts with 4 wires, which makes it possible to connect a separate line to 2 telephones. For private houses and apartments this is not necessary, so this telephone socket is popular in office premises.
RJ 14 is considered universal, as it allows connection to both one line (lines are connected to contacts 2 and 3) and several lines (connection to contacts 1 and 4).
Read also: VVG cable: identification of markings, technical characteristics and permissible load
RJ 25 - differs from the previous type in that it has 3 pairs of working contacts. Installing and connecting such a connector is very complex and requires specialist skills. It is difficult to install it yourself.

Step-by-step installation instructions

So, how to install and connect a phone socket? First of all, you need to check the availability of the device connection diagram. The tools you will need are a screwdriver, an electric drill and the telephone socket itself.

Note: in operating condition, the line voltage can rise to 120V. Therefore, in order to limit yourself from such unpleasant moments when installing and connecting a telephone socket to the network, it is better to use dielectric gloves.

Before proceeding with installation, it is necessary to disconnect the electrical network. Then, using side cutters or a knife, remove the insulation from the conductors. This must be done carefully so as not to damage the wires. After all, if they are damaged, they will break easily. You need to strip the cable along a length of 4 cm. Read our article on how to remove the insulation from the cable.

Use a tester to determine the polarity of the conductors. Typically, a telephone jack has a red positive conductor and a green negative conductor. But it is better to check, since it is not known how the installation and connection were carried out. If the device is not at hand, the connection is made according to the existing plan (the diagram is attached to the device).

The next step after checking the polarity is to connect the cable cores, as shown in the photo below. After this, a telephone socket is fixed on the wall. After installation, you need to connect to the network and test the installed device.

It should be noted that the housing can also be of a hidden type. How to install and connect a hidden phone socket? First of all, it is necessary to mark the wall where the device will be installed. Using a hammer drill, make a hole and secure the structural elements with self-tapping screws. The installation ends with fastening the protective housing and testing the device that has been installed.

If at home it is necessary to install and connect a socket for a telephone with 2 outputs (installation of several devices with different telephone numbers), then one nuance should be taken into account - the installation requires a large number of conductors. But overall there are no significant differences in the work.

Connection diagrams

The method of determining polarity without a device has a number of advantages. It has been tested more than once. There are many options for color coding of wires and when installing and connecting the device, there is a possibility of even more confusion.

The telephone socket is installed according to certain patterns. Such a scheme is developed in advance. As a rule, polarity does not matter much. But some telecommunications devices may fail or function incorrectly if this is not taken into account. The device connection diagram is provided below:

In order to simplify installation, manufacturers mark the contacts (the diagram and designation must be supplied with the device). It can be in the form of numbers that are written near the contacts or on the diagram. Or the wires are designated by a certain color.

How twisted pair cable cores are correctly marked when installing and connecting a socket is indicated in the tables below:

Useful tips

Well, the last thing I would like to provide you with is useful tips on connecting a telephone socket with your own hands. So, consider the following nuances during installation:

Today, the most popular is the internal telephone socket. Since it can harmoniously fit into any interior of the room and is not very noticeable. But when installing it, it is necessary to take into account the fact that the wall decoration may be damaged. And it will take more time.
You should buy products from trusted manufacturers. These include the companies Legrand and Vico. After all, they have already proven themselves positively in the modern market.
If the contact numbering was not indicated on the body of the purchased device, then you need to familiarize yourself with the rules for marking wires by color. So, to indicate positive contacts, green, blue and orange are used together with white. For negative contacts, use the same colors, only without white.
The old format telephone socket has a different marking standard. Therefore, if you are installing just such a device, then you need to know these rules. For example, the colors used for plus are black, orange and green. For minus - yellow, blue and red.

Installation methods

Telephone sockets can be installed in an open or closed manner. The open method means that all the decoration on the wall is preserved; the equipment is attached directly to the wallpaper or paint.

In this case, the wires are hidden in a cable channel located in the baseboard or on the wall. You can find cable channels of different colors and sizes, baseboards with a cable channel inside. Models with snap-on lids are convenient. There are also baseboards with built-in sockets. When buying them, choose those whose front panel fits well to the base, otherwise over time it will begin to lag.

Sometimes devices are mounted not on the wall, but on the floor. When connecting in an open way, they can even be glued with double-sided tape.

If the telephone socket is connected in a closed (hidden) way, the wires are laid in the channel before the socket is installed in the socket box. Sometimes the wires are laid in the wall and the socket is installed outside. Most often they use a copper single-core cable KPSV in a white polyethylene sheath or a copper single-pair cable TRP.

Most often, telephone sockets are not installed separately, but as part of an outlet block, for example, together with an electrical outlet and a switch, as in the photo.

Advice! To disguise the structure, place them behind furniture facades or behind monitors and TVs.

Telephone socket device

A telephone socket consists of several main elements:

housings made of dielectric (non-conducting) material - ceramics or plastic,
contacts - spring-loaded brass parts that are needed for reliable connection of conductive parts and uninterrupted flow of current,
terminals - adapters for connecting cables.

The contact sockets of the device are recessed into the housing. This arrangement prevents accidental short circuits.

Telephone sockets can be single or multi-socket. Single-connector models allow you to connect one telephone set, multi-connector models allow you to connect several. The RJ 11 socket is a single-socket socket; it can be used to connect only one telephone.

RJ 11 connection

RJ 11 has two wires, so it’s easy to connect it yourself at home. To do this, you will need to connect the two ends of the wire with certain contacts in the socket, so that in the plug and in the socket they are located in a mirror image. For installation you need:

two-core cables with a thickness of 0.3-0.5 mm,
screwdrivers - flat or Phillips, depending on the type of screws, with an insulated handle,
drill,
insulation removal tool,
tester,
tool for crimping contacts - you can not use it, but crimp the contact plates with a screwdriver, but then the plug will not look so neat.

The video shows how to properly connect a telephone socket to the line.

Important! Work on connecting the socket should be carried out using rubber or latex gloves. The voltage in the low-current network reaches 60 V, dropping to 12 V when the tube is removed. If they try to call the phone, a voltage of 120 V will arise in the wires, that is, they may receive an electric shock. With such tension it is not dangerous, but unpleasant.

First of all, you need to turn off the electricity. Next, you need to remove the insulation from the wires. This is done with side cutters, pliers or a regular knife. You need to carefully remove the insulation from the wires so as not to damage the core of the telephone cable itself, otherwise it may break in the future.

Do not burn the insulation and then remove it with your fingers. You can burn yourself with hot plastic, and with this method it is difficult to remove the insulation carefully. You need to strip the wires at a distance of 4 cm from the end.

It is advisable to strip the wires generously: they are thin and fragile and can be easily damaged. The excess part, if any remains, can be easily hidden under the socket body. For closed installation, for convenience, the wires are made to protrude beyond the wall surface by 5-8 cm.

Next, use a tester to check the polarity of the wires. Typically, in telephone jacks, the red wire is positive and the green wire is negative. But it is better to check the polarity, since it is not known how the wires were located before. If it is not possible to use a tester, then connect the cables according to the diagram that comes with the device.

To check if the line is working, you need a voltmeter (multimeter). The line voltage should be 40-60 V.

After this, the wires are connected to the outlet according to the diagram. To do this, you will need a screwdriver - insert the wires into the connectors and tighten the screws, clamping them well.

If you need to install the outlet in a closed way, then first markings are applied to the wall showing where the device will be located. Then, using a puncher, holes are made according to the markings and the structure is secured with self-tapping screws. A protective casing is installed on top. At the end the device is also tested.

If you are installing a new point and there is no space for sockets on the wall, then first make a recess for them - a socket box. It is drilled out using a special crown attachment on a hammer drill with a diameter of 6-7 cm. Channels for laying wires are also drilled using a hammer drill. If there is no hammer drill, this can be done with a hammer and chisel. But such work is much longer and more labor-intensive.

After this, install the device in the socket box, making sure that the cables are not intertwined. Then the socket is secured using self-tapping screws and expansion screws. The gaps between the socket box and the wall are covered with gypsum mortar.

When the solution hardens, install the protective edging and front panel. The protective edging in modern models is attached with latches, and the front panel is fixed with screws.

Telephone cable pinout "4 cores"

Before we begin to discuss the topic, it is necessary to answer the question: what is telephone cable pinout? For proper switching and data transmission, the cable must be correctly connected to the connector. The process of connecting cable cores to the corresponding connector pin is called pinout. This can be done in two ways: unplug the telephone cable into a socket or do it using special connectors - “jacks”. The first method is currently practically not used, so let’s consider the second.

Telephone cable pinout

Telephone cable: color coding

The table below shows the pinout of contacts depending on the color of the cores:

Telephone cable “4 cores”: how to properly crimp the connector

You can do this yourself - the main thing is to get the right tool. As an example, consider crimping a KSPV cable. To do this you will need: • KSPV brand cable of the required length; • stripping tool (cable cutting knife); • RJ-14 connectors; • crimping Tools.

Operating procedure:

1. Prepare the required connector, telephone cable of the required length and crimping tool (crimper).

2. Using a stripping tool, remove the top insulation approximately 5-7 mm.

3. Push the connector onto the cable until it stops. The color layout of the wires on both ends of the cable must match.

4. Using a crimper, crimp the connector. During the crimping process, the contact knives pierce the core insulation, thereby forming an electrical contact.

5. Remove the cable from the crimp and check the quality of the connection. If necessary, the procedure can be repeated.

is one of the leaders in the sale of cable products and has warehouses located in almost all regions of the Russian Federation. After consulting with the company’s specialists, you can purchase the brand of telephone cable you need at competitive prices.

Connection diagrams

Telephone sockets will be connected according to certain patterns. Their wires are marked with color or numbers; there are different options, but a wiring diagram for the telephone socket is usually included with the device.

Polarity is usually not that important, but some devices may not function properly if it is not observed. The connection diagram is shown in the figure.

Twisted pair cores are also marked according to different standards, which are given in the tables. There is an old, new and German scheme.

New marking
Contact number	Polarity
blue-white

Old scheme
Contact number	Polarity

German scheme
Contact number	Polarity
brown

To properly connect your phone and get a well-functioning line, you need to take into account some recommendations.

Most often, an internal (hidden) outlet is installed. It fits well into any interior, but it is more difficult to install, and it can also damage the decorative finish of the walls. Open type sockets are easy to maintain, install and dismantle; their installation does not damage the finish, but they do not look very aesthetically pleasing.
Preference should be given to products from well-known manufacturers. These include the companies Legrand and Vico.
If the socket does not come with a wire marking diagram, you can use the tables above. In the new marking, the positive wire of the RJ 11 socket is the same color as the negative wire, but with the addition of white. According to the old scheme, positive is green and negative is red. In the German version, negative is white, and positive is brown.

Purpose of use

Although there are some distinctive features, these two standards are used in the same communication systems. However, RJ12 is also used in other configurations. In systems with touch-tone telephones and small PBXs, two of its “extra” contacts can be effectively used. RJ12 has not yet gained popularity, and only installers who cooperate with telephone networks of large companies work closely with it. In turn, RJ11 has a relatively wide range of applications, because the standard is mounted on most telephones and telephone cables. For RJ12, the cable pinout is no different from the cable for RJ-11.

RJ 11 cable pinout

The most popular connector is RJ-11. Only 2 of its contacts are used to operate telephone networks. RJ-12 got its name due to its external similarity to RJ-11. In fact, according to the official classification, this connector is RJ-12.