How to connect a telephone plug. Connecting a telephone socket: options, diagrams, features

During the development of communications, several standards have been created for connecting landline telephones to existing lines. Almost all of them are used to one degree or another in everyday life and in industrial enterprises.

Inside the networks of large organizations that have existed for several decades, you can find simultaneously working models of various designs, installed at different times. The features of their device must be taken into account before installing and connecting the telephone.

Purpose and standards of telephone sockets

The main task of the socket is to provide a quick-disconnect and reliable connection of telephone sets to existing communication lines, created by a permanently placed part - a socket or “female contact” and a movable plug inserted into it: “male contact”.

Design features

Materials and tools

Basic devices that may be needed when installing telephone wiring:

• side cutters - for cutting cables;
• knife - for stripping the ends of wires;
• screwdriver - fastening the ends in the socket;
• screws – fastening the base of the device to the wall;
• drill - drilling holes for fixing the external device;
• drill with carbide tips - usually used with a diameter of 4.2 mm;
• plastic inserts in holes;
• “grinder” with a disc for concrete – for concealed wiring;
• hammer drill with a core drill, drill size in accordance with the size of the box;
• – to clarify the polarity of the contacts in the connector when connecting;
• protective latex gloves - if during work you accidentally call the phone, the potential difference can reach 120V, which is no longer safe for direct contact.

Work order

1. If you decide to install hidden wiring, you should first create a channel for laying the telephone cable. Using a grinder, cut a hole along the entire length of the channel and lay the wire in it; seal the channel with cement mortar.
2. When making open wiring, you will need special plastic brackets for attaching the cable to the wall and an electric drill with a drill. Insert plastic inserts into holes about 20 mm deep and secure the wire under the bracket with a nail or screw. All fasteners are sold as a set; there are no problems with the compatibility of components.
3. Installation under the baseboard will require the use of a chisel, with which the baseboard is removed from the wall to lay the wire. After this, the baseboard is tapped into place with standard nails.
4. When installing the outer box, it must be connected to the cable first. After this, fix it on the wall. Options are possible here, determined by the design of the boxes themselves. If its base has holes for fastening, you need to attach it to the installation site and mark the location of the holes on the wall. Using a drill, drill holes, install inserts and secure the base of the box with the screws provided. Then install the cover, which has special latches for this purpose. The base without mounting holes can be mounted on the wall using double-sided tape. The fastening is quite reliable, but it is advisable to hold the housing when disconnecting the connector.
5. When installing the inner box, you need to use a hammer drill and a core drill along the diameter of the box. After making a blind hole in the wall, install the box in it, connect it to the cable and secure it in the hole. Replace the cover.
6. When connecting contacts, you need to check the correspondence of the poles with a tester (location “+” and “-”).

All work is simple and accessible to a non-professional performer.

Types of connectors. Features of the use of RJ11, RJ12 and other types

Telephone connectors serve not only for connecting devices to a communication line. They are used to connect with other devices and communication devices.

Sockets are made with one, two or more connectors and can provide connection for several subscribers simultaneously.

Among the wide variety of connectors, it is necessary to consider some of their varieties:

• RJ11 – two-wire version, used for connecting to linear networks.
• RJ14 – equipped with four conductors and four contacts, compatible with most modern telephone models. To connect one subscriber you need to use the 2nd and 3rd contacts. If you need to connect several additional lines, you need to use the 1st and 4th contacts. If an overhead telephone socket is used, the line is connected using red and green wires.
• RJ25 - has three pairs of contacts; its connection requires the participation of a qualified telephone specialist.
• RTShK-4 is a legacy of the Soviet period, but is still being produced and used today. Comes with a special key. The connection is made in a permanent way with a tap-off box. If there are several points of this type in the room, they are short-circuited using a capacitor.

Let's talk more about devices for connecting RJ11 and RJ12:

• The first of these types of products is used for individual connections in regular telephone networks.
• The second is used for networks with heavy loads - in office or public places.

These types of connecting devices have two or four pins, designed like a metal plug, connected to pins that are located in the center. For installation, a special tool is desirable - a cross-connecting knife, which allows you to remove the braid without damaging the wire and crimp the plug when installing it on the wire.

To connect you need:

• remove the braid from the wire to a length of 4–5 centimeters;
• straighten each cable core, the number of which varies from 4 to 6;
• lay all the wiring in the slots of the socket;
• Check for contact between the connector and the phone cable.

When starting the connection, you need to take care of safety measures when performing work. Be sure to wear rubber gloves that can protect you from electric shock.

General socket design standards indicate that red braiding usually indicates a positive conductor, and green braiding usually indicates a negative conductor. A tester will help you verify this.

The connection methods for all sockets are identical, but they differ in installation methods depending on the design.

In practice, the installation of popular French-made sockets such as Legrnd is also carried out. The line of products of this type is very diverse; sockets are available with any type of installation: external, internal and any others. The color coding follows European standards and is identical to similar products from other manufacturers.

Examples of prices for telephone connectors

Table 1

Image	Model, description	Price, rub)	Manufacturer
	Reksant. With adapter function for using Euro sockets together with old domestic ones	60	Russia
	Internal telephone socket Reksant 2 – 6р-4с (2 ports), milky white color	380	Russia
	Internal telephone socket Reksant 1 – 6р-4с (1 port), milky white color	290	Russia
	Telephone socket Proconnect 2-6р-4с	55	Brand
	Telephone socket RJ12 1 module 6 contacts ABB Zenit N2117.6AN	500	Brand
	Telephone socket 2 RJ11Legrand Suno 774839	490	Legrand France

1. When carrying out work on laying telephone cables, you need to remember the safety rules:
   • When cutting cable grooves in brick or concrete, be sure to wear safety glasses or a face mask to protect your eyes and face.
   • Take the same safety precautions when drilling holes for cable support or an outlet base.
   • When cutting material from the grooved channels, from the blind hole for the socket box, install a protective disk on the chisel to prevent damage to your hands.
   • Work with wiring must be done with protective gloves.
2. If you don't have a wire polarity tester, use a cut potato. Stick the ends of the wires into the pulp; the surface of the pulp around the positive wire will soon begin to darken.
3. Modern sockets are made in a safe version. However, they must be installed out of the reach of children.
4. When stripping the ends of the cable for connection, you must avoid damaging the insulation of the internal wires and, especially, the conductors themselves. This leads to deterioration in communication quality and the possibility of line breakage.
5. If you are using an old Soviet two-core wire in the form of a plastic ribbon with wires along the edges, it is unacceptable to fasten it by driving nails between the wires. This often leads to a line break during installation. When a nail comes into contact with a wire, a grounding pair can be formed, which degrades the quality of the connection.

By carrying out all the work thoughtfully and carefully, you can successfully cope with the simple task of wiring and installing sockets. Take it without a doubt and you will succeed!

Cellular telephone services have greatly simplified communication between people, making it more convenient and accessible. A modern person does not need to rush around looking for a telephone booth or a token to be able to make a call. However, despite the undeniable advantages of mobile communication, landline phones and wired communications are still in great demand, remaining a reliable means of high-quality connection. In addition, the devices themselves have become much more convenient and functional. To use this type of communication, you will need telephone sockets. These connectors have their own characteristics and differences in installation methods and must be taken into account when connecting. In this article we will tell you how to connect a telephone socket to a telephone cable, consider diagrams and instructions.

Telephone socket design, communication cable arrangement

In terms of their internal structure, connectors for connecting telephones and wires for transmitting signals have little in common with electrical sockets and power lines. They differ not only structurally, but also in the installation method. To understand all the intricacies of connecting communication lines, you need to study the features of the device and the operating principle of switching devices. Read also the article: → "".

The telephone line current constantly changes depending on the position of the handset (off-hook or on-hook) and the state of the connector (connected or disconnected). If the device is not connected to the network, a direct current of 40-60 V flows through the line. A similar situation arises when the telephone is connected, but the handset is placed on the cradle. At the moment of the call, the voltage increases to 120 V, converting into alternating voltage. Removing the tube lowers it to a value of 6 to 12 volts.

All these processes occur in a flat wire that has two copper cores. It could be compared with the PPV wire used for electrical wiring, but the core cross-section is so small that it can only be used for the specified network loads: in telephone lines, as well as in automation circuits (burglar or fire alarms).

There are several types of connectors for connecting phones:

• RTShK-4 – can only be used for old communication devices;
• RJ-11 – a modern version called “euro”;
• R.J.-12 – slang name for the connectorR.J.-25, which has become so widespread that for the convenience of providing information, it is used more often than the real one. In fact, such sockets do not exist, so when faced with the term R.J.-12 should be impliedR.J.-25 .

The RJ-11 telephone jack has a socket-style port for a matching plug. Outwardly, it looks like a computer socket, but upon closer examination, you will notice that their sockets differ in width (it is wider in the computer version).

The most common device options:

• invoices, also known as external ones;
• mortise, they are also internal.

There are also built-in products, but they are manufactured in the form of blocks that, as a rule, combine several types of switching devices - electrical, TV, computer and telephone. Read also the article: → "".

Different types of telephone sockets can be used in different conditions

There is also a design combining RTShK-4 and RJ-11, which at a certain stage was able to solve the issue of using imported telephone sets with Euro connectors in post-Soviet territories. Now it is obsolete, although it continues to be used successfully.

Device variant combining RTShK-4 and RJ-11, suitable for different plugs

Modern telephone wires can most often be two-wire or four-wire. In this case, the core insulation has a characteristic coloring. Wires with 4 cores are used, as a rule, for office mini-PBXs, as well as for parallel connection of two devices on the secretary-director principle. In this case, RJ-12 connectors are used.

Connecting a telephone socket

Connecting RJ-11 and RJ-12 sockets is absolutely the same, with the exception of the number of connected conductors. The most commonly used are two-core wires, with switching there are no problems. The situation is more complicated with four-core products, the connection of which must be made according to the color scheme.

Before starting work, the socket is disassembled (the top panel is removed). The outer sheath is removed from the telephone cable to the required length. Depending on the type of contacts, the conductors are stripped or left insulated. Further actions are carried out in accordance with the instructions.

Switching with two-wire wire (RJ-11)

Step-by-step instructions will help you connect quickly:

1. There are four terminals or contacts located on the inside of the device. If there are bolted contacts, you need to decide on the color of the conductors connected to them. According to international standards, the red conductor should be negative and the green conductor positive. The ends of the supplied telephone wire are connected to them

1. If the design of the device provides terminals, then there is no need to strip the ends of the wire. They are inserted into the base of the terminals and pressed until they stop with a thin flat-head screwdriver. Miniature knives provided in each contact will cut through the insulation and ensure reliable contact. In this case, the middle terminals 2 and 3 are used

1. Mount the device on the wall and check operation
2. Close the front panel. Installation is complete.

Connecting a socket with a 4-wire wire (RJ-12)

The following tips will be helpful during installation:

This switching method is standard and generally accepted, providing convenience when servicing and repairing telephone lines.

Connectors for connecting telephone sets to sockets

Like telephone jacks, connectors can be connected to them using a two-wire (RJ-11 system) or four-wire cable (RJ-12 system). Crossing the connector with a wire of 2 cores is carried out as follows:

1. The outer protective shell is removed, leaving free ends 10-12 mm long
2. The conductors, without stripping the insulating layer, are inserted into the connector body at the middle positions 2.3. The first and fourth terminals remain free
3. The contacts are crimped using a special tool or a screwdriver with a thin base.

If an old-style wire (noodle) is used, then its cores are stripped and placed in a twisted-pair sheath, after which the above measures are carried out. When connecting a 4-core cable, the red and green wires (or blue and white-blue) are connected to the middle contacts 2.3, and black and yellow (or orange and white-orange) are connected to 1.4. After this, crimping is carried out.

Color scheme for cross-connecting a 4-wire cable in a telephone line connector

Crimping with a screwdriver is done by alternately pressing each of the connector contacts until it stops. The built-in knife will pierce the insulating layer of the conductor and the connection will be ensured.

Review of well-known manufacturers of telephone sockets

When choosing a connector device for connecting a landline telephone, it is advisable to give preference to brands that have a positive, time-tested reputation in the electronic equipment market. Among such brands are Turkish companies Lezard, VIKO, as well as manufacturers from France - Schneider Electric, Legrand Valena. For comparison, average prices from online stores for the products of these manufacturers are shown in the table:

Manufacturer	Product Description	Cost, rub.
Lezard	Telephone socket, double, mortise	310
VIKO	//	248
Schneider Electric	//	496
Legrand Valena	//	700

The prices indicated are averages and cannot be used for planning or estimating. Read also the article: → "".

Mistakes made when selecting and installing telephone sockets

The main cause of all mistakes is frivolity and inattention. By reading these recommendations, you can avoid problems and shortcomings during the installation of switching devices.

Practical recommendation: If the user does not have the skills to work with electronic devices, you should not try to mount the phone connector yourself. It is necessary to seek help from specialists who will ensure competent and reliable installation of the outlet.

Error 1. After opening the package, the attached instructions are thrown away in the belief that the connection diagram is indicated on the product body. There may be no diagram and then installation difficulties may arise.

Error 2. Carry out installation without dielectric gloves. As already mentioned, the voltage in the network can rise to 120 Volts. Considering that there is no “safe voltage”, this can have unpleasant consequences. Work must be carried out in compliance with safety regulations.

Error 3. When purchasing a product, you may want to save money and buy a device from an unknown company at a lower price. This is a false economy: the product may be of poor quality and not have a guarantee, as a result of which it will be impossible to exchange it or return the money. Well-known brands provide warranties for their products, which is a guarantee of quality and reliability.

Error 4. During installation, the conductors shorted with each other and the telephone line was disconnected. There is no need to panic and call a repair team from the telephone company. The line is disconnected automatically through the central exchange. This disconnection occurs for several minutes, after which network operation is restored.

Error 5. Using used wire, removed from an old building or in an abandoned room. This wire may have broken insulation or a damaged core. This will certainly affect the quality of communication. It is better to purchase a new cable that meets modern standards, which will ensure flawless communication.

In conclusion, I would like to note that, despite the widespread use of mobile phones, landline devices continue to be widely used due to their independence from territorial “coverage” and various roaming charges. In addition, wired communication provides a better connection, and sometimes remains the only available means of communication.

These products are low-current contacts housed in plastic housings of various shapes, designs and sizes. The connection can be made by securing the contacts with screws or using a specially designed connector. Older products use special plugs.

DIY connection

Before talking about the connection, you need to bring the telephone cable to the place intended for installing the socket.

In new residential premises it is laid during construction work using hidden wiring. Only a pair of contacts are exposed outside, but a socket can also be installed.

In used rooms, the cable is often laid along the baseboard, but this is impractical as it can be damaged during cleaning. It is common to lay the telephone cable under the baseboards; for this there is no need to dismantle them, just move it a little and lay the cable in the resulting gap. After this, put the baseboard in place.

The cable can be brought to the installation site directly along the wall, or you can cut a channel and lay it as hidden wiring.

Materials and tools

Basic devices that may be needed when installing telephone wiring:

• side cutters - for cutting cables;
• knife - for stripping the ends of wires;
• screwdriver - fastening the ends in the socket;
• screws – fastening the base of the device to the wall;
• drill - drilling holes for fixing the external device;
• drill with carbide tips - usually used with a diameter of 4.2 mm;
• plastic inserts in holes;
• “grinder” with a disc for concrete – for concealed wiring;
• hammer drill with a core drill, drill size in accordance with the size of the box;
• – to clarify the polarity of the contacts in the connector when connecting;
• protective latex gloves - if during work you accidentally call the phone, the potential difference can reach 120V, which is no longer safe for direct contact.

Work order

1. If you decide to install hidden wiring, you should first create a channel for laying the telephone cable. Using a grinder, cut a hole along the entire length of the channel and lay the wire in it; seal the channel with cement mortar.
2. When making open wiring, you will need special plastic brackets for attaching the cable to the wall and an electric drill with a drill. Insert plastic inserts into holes about 20 mm deep and secure the wire under the bracket with a nail or screw. All fasteners are sold as a set; there are no problems with the compatibility of components.
3. Installation under the baseboard will require the use of a chisel, with which the baseboard is removed from the wall to lay the wire. After this, the baseboard is tapped into place with standard nails.
4. When installing the outer box, it must be connected to the cable first. After this, fix it on the wall. Options are possible here, determined by the design of the boxes themselves. If its base has holes for fastening, you need to attach it to the installation site and mark the location of the holes on the wall. Using a drill, drill holes, install inserts and secure the base of the box with the screws provided. Then install the cover, which has special latches for this purpose. The base without mounting holes can be mounted on the wall using double-sided tape. The fastening is quite reliable, but it is advisable to hold the housing when disconnecting the connector.
5. When installing the inner box, you need to use a hammer drill and a core drill along the diameter of the box. After making a blind hole in the wall, install the box in it, connect it to the cable and secure it in the hole. Replace the cover.
6. When connecting contacts, you need to check the correspondence of the poles with a tester (location “+” and “-”).

All work is simple and accessible to a non-professional performer.

Types of connectors. Features of the use of RJ11, RJ12 and other types

Telephone connectors serve not only for connecting devices to a communication line. They are used to connect with other devices and communication devices.

Sockets are made with one, two or more connectors and can provide connection for several subscribers simultaneously.

Among the wide variety of connectors, it is necessary to consider some of their varieties:

• RJ11 – two-wire version, used for connecting to linear networks.
• RJ14 – equipped with four conductors and four contacts, compatible with most modern telephone models. To connect one subscriber you need to use the 2nd and 3rd contacts. If you need to connect several additional lines, you need to use the 1st and 4th contacts. If an overhead telephone socket is used, the line is connected using red and green wires.
• RJ25 - has three pairs of contacts; its connection requires the participation of a qualified telephone specialist.
• RTShK-4 is a legacy of the Soviet period, but is still being produced and used today. Comes with a special key. The connection is made in a permanent way with a tap-off box. If there are several points of this type in the room, they are short-circuited using a capacitor.

Let's talk more about devices for connecting RJ11 and RJ12:

• The first of these types of products is used for individual connections in regular telephone networks.
• The second is used for networks with heavy loads - in office or public places.

These types of connecting devices have two or four pins, designed like a metal plug, connected to pins that are located in the center. For installation, a special tool is desirable - a cross-connecting knife, which allows you to remove the braid without damaging the wire and crimp the plug when installing it on the wire.

To connect you need:

• remove the braid from the wire to a length of 4–5 centimeters;
• straighten each cable core, the number of which varies from 4 to 6;
• lay all the wiring in the slots of the socket;
• Check for contact between the connector and the phone cable.

When starting the connection, you need to take care of safety measures when performing work. Be sure to wear rubber gloves that can protect you from electric shock.

General socket design standards indicate that red braiding usually indicates a positive conductor, and green braiding usually indicates a negative conductor. A tester will help you verify this.

The connection methods for all sockets are identical, but they differ in installation methods depending on the design.

In practice, the installation of popular French-made sockets such as Legrnd is also carried out. The line of products of this type is very diverse; sockets are available with any type of installation: external, internal and any others. The color coding follows European standards and is identical to similar products from other manufacturers.

Examples of prices for telephone connectors

Table 1

Image	Model, description	Price, rub)	Manufacturer
	Reksant. With adapter function for using Euro sockets together with old domestic ones	60	Russia
	Internal telephone socket Reksant 2 – 6р-4с (2 ports), milky white color	380	Russia
	Internal telephone socket Reksant 1 – 6р-4с (1 port), milky white color	290	Russia
	Telephone socket Proconnect 2-6р-4с	55	Brand
	Telephone socket RJ12 1 module 6 contacts ABB Zenit N2117.6AN	500	Brand
	Telephone socket 2 RJ11Legrand Suno 774839	490	Legrand France

1. When carrying out work on laying telephone cables, you need to remember the safety rules:
   • When cutting cable grooves in brick or concrete, be sure to wear safety glasses or a face mask to protect your eyes and face.
   • Take the same safety precautions when drilling holes for cable support or an outlet base.
   • When cutting material from the grooved channels, from the blind hole for the socket box, install a protective disk on the chisel to prevent damage to your hands.
   • Work with wiring must be done with protective gloves.
2. If you don't have a wire polarity tester, use a cut potato. Stick the ends of the wires into the pulp; the surface of the pulp around the positive wire will soon begin to darken.
3. Modern sockets are made in a safe version. However, they must be installed out of the reach of children.
4. When stripping the ends of the cable for connection, you must avoid damaging the insulation of the internal wires and, especially, the conductors themselves. This leads to deterioration in communication quality and the possibility of line breakage.
5. If you are using an old Soviet two-core wire in the form of a plastic ribbon with wires along the edges, it is unacceptable to fasten it by driving nails between the wires. This often leads to a line break during installation. When a nail comes into contact with a wire, a grounding pair can be formed, which degrades the quality of the connection.

By carrying out all the work thoughtfully and carefully, you can successfully cope with the simple task of wiring and installing sockets. Take it without a doubt and you will succeed!

Sometimes you need to install a telephone socket or replace an old model with a new one. Typically, this situation arises when carrying out repairs, when purchasing equipment that requires wiring a new line. Therefore, it is important to know what telephone sockets exist, how they are designed, where to buy them and how to properly connect and disconnect them.

The Viko socket is used to connect a landline telephone to the communication network. It is a small white box. Depending on the number of connectors, it can be single-connector or multi-connector. There is also a classification by types of connectors.

The most popular types of connectors are:

Possible installation methods

Telephone sockets with a cover are usually installed in the same way as ordinary electrical ones. To properly install and connect such an outlet, you should decide on the model, technical characteristics, and dimensions. It is also important to take into account the recommendations of specialists. With minimal knowledge, it is easy to connect a telephone network in just five minutes using a photo.

The Hyperline socket can be built-in or surface-mounted. The first type is used more often because it allows you to maintain a presentable appearance of the room’s interior. Such products are often installed in the presence of open wiring. Depending on the type of outlet, there are two installation methods - closed and open. The latter involves installing a socket on the wall surface without removing the facing layer. This option is suitable when the repair has already been carried out and you need to connect the phone. The socket is installed directly on the paint or wallpaper. In this case, the cable channel is hidden under the baseboard. The open method is often carried out without mounting on the wall: the socket is located on the floor.

The essence of external installation of a European socket is as follows. There are four screws: the two screws that are closer to the connector are not touched, but secure the wire in the two remaining screws. Then the insulation is laid. To do this, the cores are connected to the clamp and pressed with screws. Close the housing cover. It is important to carry out all work with latex gloves. Otherwise, you may get an electric shock when they try to call the phone and voltage appears.

A hidden installation option involves laying a telephone wire until the moment. Therefore, it is necessary to decide in advance on the location of the wall box. Often the wires are hidden in the wall, and the product itself is taken outside. This mounting method visually resembles ordinary electrical sockets with a cover plate.

As a rule, the methods for connecting all types of sockets are identical, although there are some differences depending on their design.

Detailed instructions for connecting a telephone socket

Before you begin connecting the DKS telephone socket, you should connect the telephone cable to the installation site. Usually it is laid during the construction of the building. Only a couple of contacts are exposed. If the room is already in use, then the twisted pair cable is laid along the baseboard. True, this is not entirely practical: during cleaning there is a risk of damaging the product. Most often, the cable is laid under the baseboard. In this case, there is no need to dismantle the product, it is simply moved a little, a cable is laid into the gap and put in place. The cable is led to the installation site along the wall or laid as hidden wiring.

For hidden wiring, first make a channel for laying the cable. Using a grinder, you need to cut out a channel of the required length and lay the wire. Then fill the hole with cement mortar. If open wiring is assumed, then the cable is secured to the wall using plastic brackets. Using an electric drill, drill holes about two centimeters deep. Inserts are inserted into them and the wire is secured under the bracket with a screw or nail.

When installing the outer box, it is first connected to a two-core cable. And then they fix it on the wall. If the base has special holes for fastening, then the box is placed at the installation site and marks are made on the wall. Next, holes are drilled using a drill. Inserts are installed in them, and the base of the box is fixed with screws. Then the cover is mounted using special latches. If the base does not have holes, then fixation on the wall is done using double-sided tape.

To install the inner box, you need a hammer drill and a drill of the appropriate diameter. A blind hole is made on the wall. Mount the box into it and connect to the cable. Put the lid in place. Using a tester, check the poles.

To connect the Valena telephone socket, you must:

1. remove the braid from the wire to a length of five centimeters;
2. lay the wiring in the slots of the socket;
3. Check for contact between the cable and the connector.

The wiring always corresponds to the diagram, so you can safely install a telephone socket according to the existing designations.

What should you pay attention to?

To buy the most suitable socket or connector for connecting a telephone, you need to study all existing models and weigh the pros and cons of each option. It is important to consider the type and characteristics of the telephone you are using. You may additionally need to purchase an adapter from Japanese, Chinese, American plugs to a Euro socket.

When choosing a four-wire socket, you need to pay attention to the fact that the RShTK model is outdated and does not fit well with modern phones. To connect such a product, you will need a cable with a cross section of 0.3x0.3 mm. Therefore, more modern types of sockets are often chosen. For example, Schneider, Legrand. Having installed Lengard, you will not have to strip the wires. After all, the product is equipped with a self-cleaning function. How to crimp a plug?

It is also worth considering that most models of telephone sockets have only two contacts. The cable must have the same number of contacts. If the socket has four contacts, then it is double and you can connect a second telephone line to it. As a rule, the contacts in the boxes are numbered. But sometimes the numbering is missing. Then you have to be guided by color coding.

When connecting, you also need to pay attention to the polarity. For what? Sometimes the device may not work. In this case, it is enough to simply reverse the polarity.

During installation, it is recommended to take into account that for low-current communication devices the voltage usually does not exceed 60 Volts. How many volts are in the telephone wireless socket depends on whether the handset is on or off-hook. But even low voltage can create a current and cause discomfort to a person. Therefore, work must be carried out carefully.

If you know the safety rules and follow the instructions, then connecting to the line will be quick and successful.

Beginners often make mistakes during installation. Therefore, experts have compiled a list of recommendations that will help you complete the job correctly.

So, experienced electricians advise:

Long-distance and international calls from a landline telephone are much cheaper; you do not need to constantly monitor the charge level of the batteries and periodically change them.

Connecting one landline telephone or several in parallel to a communication line with your own hands is a simple task that can be done by almost any person, even those who do not know the intricacies of communications.

What is the voltage in the telephone line

The telephone communication line is under DC voltage 40-60V if the telephone is not connected or is connected, but the handset is placed on the telephone set. During a call, the voltage in the communication line becomes variable with an amplitude of up to 120V. When you pick up the phone, the voltage drops to 6-12V. This tension is not life-threatening, but it can cause discomfort. It is impossible to damage the communication line or damage the telephone when connected. The maximum that can happen is that the telephone line is disconnected for several minutes if the handset is picked up for a long time without dialing a number or the communication line conductors are short-circuited. This telephone line is automatically switched off by an automatic telephone exchange (ATS) to save electricity in the event of a short circuit between the conductors of the communication line or the handset is not put on the telephone. So you can safely start connecting your phone to the communication line yourself.

Before connecting a landline telephone to the communication line, it is advisable, but not mandatory, to check that the communication line is ready. The line voltage can be measured with a voltmeter designed to measure DC voltage. How to measure DC voltage with a dial tester and a multimeter is described in detail in the article Voltage measurement. If the phone is not connected to the line or is connected, but the handset is on the phone, the device should show a voltage of 40-60V. If you don’t have a voltmeter, you can check using potatoes, and this is not a joke, but a real way to check. It is enough to stick the noodle wires, stripped of insulation, into the cut of the potato. No batteries are needed since the wires are already energized.

Scheme for connecting a wired landline telephone to a PBX

A hundred pair telephone cable is stretched from an automatic telephone exchange (ATS) to each house, which branches out into ten pair cables along the entrances of the house. The ends of ten pair cables are soldered into ten pair plinths in the entrances of the house. The plinths are installed in boxes or fixed to the walls. The photo shows the plinth with the lid open.

Previously, plinth casings were made of duralumin, now they are made of plastic. In modern plinths, linear wires of communication lines are connected by pressing them into combs with a special tool. From one of the pairs of plinths, a communication line is stretched into your apartment using a TRP telephone wire, which signalmen call noodles. At the end of this wire, an RTShK-4 socket (old model), or a modern RJ-11, is installed in the apartment, and a wired telephone is connected to it using a plug.

As you can see, the connection diagram for a wired landline telephone is simple; an individual pair of wires is stretched from the PBX to your apartment, through which communication is carried out. As can be seen from the diagram, the plug and socket are needed solely for ease of use and do not take part in the operation of the phone. You can connect the telephone wires coming from the plinth to the telephone cord, and the telephone will work successfully.

How to connect your phone to a communication line

Telephone sets are connected to the line using a detachable connection - a plug and socket. Currently, telephone connectors of two standards are used. Morally obsolete Soviet ones, meeting the requirements of GOST 8810-81 (CT SEV 5396-85), which was in force until 01/01/92 (RTShK-4), and modern telephone plugs and sockets RJ-11, meeting the international standard IEC 60669-1 and 60884- 1 (623K). Universal telephone plugs and sockets are also used, which make it possible to connect plugs and sockets produced according to the new and old standards with each other.

The question does not seem relevant, but there are still many phones in use that have been connected for a long time and when independently repairing the connector or moving the phone, this information may be in demand.

Of course, the Soviet telephone connector is bulky and does not correspond to modern aesthetic views, but it is reliable and has successfully performed, and continues to perform, the functions assigned to it for a long time.

The telephone socket has four contacts for connecting the plug and two for switching the capacitor. The positioning of the plug when inserted is ensured by the holes in the socket cover. The telephone socket has four contacts for connecting the plug and two for switching the capacitor. The positioning of the plug when inserted is ensured by the holes in the socket cover. The line is connected by a screw connection to the two right contacts. To monitor the integrity of the line, a capacitor was also installed in the socket, which was connected to the upper right contact and the lower left one. When the plug was inserted into the socket, it broke the circuit with a wedge-shaped pin and the capacitor was turned off. When it was necessary to check the line, it was enough to unplug the socket and the signalmen with the telephone exchange could, by applying alternating voltage to the pair, check the condition of the line, and thus determine whether the line or the telephone set was to blame for the lack of communication. When two telephones are connected in parallel and the plug of one of them is removed, the line is severely damaged, since the alternating voltage passes well through the capacitor. If you accidentally forget such a socket connected to the telephone line, be sure to disconnect it from the line or remove the capacitor. It is advisable to remove it from all connected telephone sockets, since in modern telephone communication lines the capacitor does not take part and is not needed.

The telephone plug is a plastic box of two halves, one of which has four flat contacts inserted into it. The cord coming from the phone is connected to them with screws. The photo clearly shows which contacts to connect it to. It doesn’t matter which contacts the wires are connected to for the phone to work, the main thing is that the contacts of the telephone socket, to which the line wires come, are connected to the contacts of the plug, to which the wires from the phone come. The wedge-shaped pin serves to disconnect the test capacitor from the communication line.

With the advent of foreign-made phones in everyday life, in which the cord ended with an RJ-11 6P4C plug, and all sockets were installed RTShK-4, adapters immediately appeared on sale, allowing any owner of a new product to connect the phone to the line without outside help.

In the adapter, the top two flat contacts were connected to RJ-11 pins 3 and 4 (standard crimp scheme), pictured on the left, and the bottom flat contacts were connected to RJ-11 pins 2 and 5, pictured at the bottom of the adapter.

Connecting the phone to the universal socket RTShK-4 623K RJ-11

Another creation of the transition period, a universal socket, a symbiosis of RTShK-4 and RJ-11 sockets. I don’t know why they were produced, but it can be assumed that when replacing the RTShK-4 that had become unusable, it was possible to replace them with a universal one. This will ensure the ability to connect phones with plugs of any standard.

Contacts 3 and 4 of both RJ-11 telephone sockets are connected in parallel with the right RTShK-4 (standard connection), and contacts 2 and 5 of the telephone socket are connected in parallel with the left RTShK-4.

Connecting a phone to a 623K RJ-11 6P4C outlet

Modern sockets for connecting telephones for RJ-11 4P4C plugs are small-sized, available in different body colors for all applications, wall-mounted and for internal wiring. Combined, for simultaneous connection of telephones to the communication line and computers to local networks and the Internet using RJ-45 plugs.

In the presented socket, the line wires of the telephone line must be connected to green and red wires that are connected to pins 3 and 4 of the RJ-11 4P4C socket. The polarity of the phone connection does not matter.

Connecting a landline telephone with a handset to the line is done using a telephone line cord with RJ-11 6P4C plugs at the ends. RJ-11 6P4C plugs are similar in appearance to RJ-11 4P4C, but have six pins. Of these, only the middle two are used to connect the phone. Other contacts are often missing. Six contacts are used when connecting two landline telephones in parallel using the director-secretary system. This is when when you pick up the handset of one of the phones, the second one automatically turns off.

According to the standard for connecting a telephone, a wire of a certain color marking must be suitable for each contact number. This was invented for ease of repair and maintenance. It doesn't matter what color the wire is connected to where. The main thing is that the wires coming from the PBX are connected to the two middle contacts 3 and 4 of the telephone plug.

The polarity of the connection for a landline telephone that is not connected in a paired circuit does not matter.

Parallel connection of phones

Sometimes, for convenience, you need to connect another ordinary telephone or several in parallel to an already connected telephone set to the line. This connection is made by simply connecting sockets in parallel, in the same way as electrical sockets are connected to electrical wiring. The polarity of the wires does not matter. Modern phones place very little load on the telephone line and you can connect at least 10 phones in parallel. The disadvantages of such a connection include the lack of confidentiality during the conversation. That is, during your conversation, anyone who picks up the handset on any parallel-connected telephone can hear your conversation. There are blocking schemes that allow you to pick up the handset on one of the phones and block all other telephones.

After connecting several telephone sets in parallel, a situation may arise when a ringing signal arrives, only one telephone rings, and all the others only make a short, quiet sound. The reason for this is the presence of an ANI (automatic number identification) system in the calling telephone, configured to determine the telephone number of the calling subscriber before picking up the handset. Thus, Caller ID immediately automatically picks up the handset and generates a ringing signal itself. For this reason, all other phones connected in parallel do not ring. Usually in modern phones you can enable the Caller ID function for number identification after you pick up the handset. Then, when a ringing signal arrives, all phones will ring. Caller ID included in the number identification mode before picking up the handset is also bad for long-distance callers, since even if you are not at home and a call is received, then even without picking up the handset, the countdown of the long-distance connection time will begin and charges will be charged. But there is also a plus: if phones without Caller ID are installed in recreation areas, and with Caller ID in another room, then a night call will not disturb you.

There are also ready-made solutions in the form of a telephone set with several radio handsets, which allow you not only to block, but also to switch the caller from an off-hook to any other. However, such phones are not affordable for everyone and have a significant drawback. When there is a power outage, they do not work and the handsets are equipped with batteries that last for several years and are then replaced with new ones, at a cost comparable to the cost of an ordinary push-button telephone. Therefore, to ensure uninterrupted communication, you still need to keep an ordinary telephone in reserve.

Connecting the telephone cord to the line by twisting the wires

There are situations in life when you need to connect the phone to the line, but there is no outlet. In this case, you can connect the wires by twisting without degrading the quality of the connection. This connection is even more reliable than a detachable one. The only drawback is that you will have to cut the wire if you need to connect another one. And even then, in modern telephones, the cords with telephone sets are connected with RJ11 plugs and it is possible, for example, if the telephone is repaired, it is always easy to disconnect it from the line. I have one phone connected this way, with the entire cord hidden behind the door casing, only a 15 cm long piece with an RJ11 plug at the end comes out, which is immediately inserted into the phone socket.

The telephone cord is very flexible; it is a special wire with cores made using special technology. A very thin copper ribbon is wound around a cotton thread. Such a conductor is called tinsel. Tinsel wires are widely used in the production of headphones, connecting telephone handsets to bases, that is, in cases where the wires are constantly bent during operation.

There are several tinsel conductors in each vein and they are also intertwined with each other. Soldering tinsel is very difficult, and the mechanical strength of such soldering is low. To obtain a reliable and mechanically strong twisted connection, it must be performed using the following technology.

First, the insulation is removed from the telephone cord tinsel to a length of 10-15 mm and the line wire conductors to a length of 20-25 mm with a shift using a knife in the manner described on the website page How to remove insulation. There is no need to remove the tinsel string. Then both wires are folded together, the tinsel is bent towards the conductor and the core of the linear wire is wound onto the tinsel pressed against the insulation. It is enough to make three to five turns.

In the same way, twisting is done with the second conductor of the cord. As you can see, it turned out to be a neat connection. Cover the resulting connection with insulating tape. If you have a polyvinyl chloride tube of a suitable diameter, you can put a piece of it over the twisted area for insulation. The connection can also be made straight if the linear wire is bent 180 degrees before insulating. Mechanical strength will increase significantly.