How to connect a telephone socket: connection diagram and installation rules

Despite the rapid decline in the popularity of landline telephones, there are not so many people who are ready to refuse them flatly. Admit it, it happens that sometimes it is extremely difficult or even impossible to do without traditional communication.

To connect the device to the switching network, you need a low-current node, the installation of which you can handle yourself. We will tell you in detail how to connect a telephone socket without calling a wizard.

There is absolutely nothing complicated in the schemes and methods, and the useful information we have proposed, as well as photos and videos, will help to deal with the issue.

Designs of landline telephones are modified and improved every year. And modern devices are significantly superior to their predecessors, standing out against the background of their high reliability and ease of use.

To ensure the smooth operation of the device, two conditions are necessary:

1. The presence of a valid communication line from the PBX.
2. Possibility of electrical connection of a stationary device to this line.

The only thing that does not change in the field of telephony is the principle of operation of landline telephones. However, there are significant changes in designs and connection methods.

Old and new options for telephone switching are presented in a photo selection:

Image gallery

Despite differences in design and connection methods, any telephone socket traditionally includes three main elements:

• Frame- made of dielectric material (ceramics or plastic).
• Contacts- spring-loaded brass elements that ensure the reliable passage of currents through the electrical circuit.
• Terminals- adapters necessary for connecting wires.

The electrical contact sockets of the stationary socket are recessed into the housing. This solution allows you to protect the device from accidental short circuits.

On sale there are single and multi-slot models. The first are designed to connect one device, the second - allow you to switch several devices at once.

Old and modern device standards

As equipment has improved, the methods of connecting telephones to a communication network have undergone a number of changes. In the first models of telephone sets, the connection to the communication line was carried out without the use of sockets at all.

To create a closed current loop, the wires were simply twisted together, or connected by any other available means.

In the 80s of the last century, the connections of ATS lines were carried out using two-core copper wires. And to ensure a quick disconnect phone connection, sockets and plugs of the RTSHK-4 standard were used. This abbreviation stands for "four pin plug type telephone socket".

The housings of such devices are equipped with a protective key - a plastic connection that allows you to prevent incorrect installation of the plug into the socket.

The RTSHK-4 design includes a key and two pairs of contacts. The first pair ensures that the phone works in normal mode, the second pair allows you to connect an additional line, provided that both devices are on the same phone number.

In place of obsolete models of the RTSHK-4 standard, as a result of the ubiquitous spread of microprocessor technologies, Registered Jack equipment, marked "RJ", has been actively used. It complies with the international standard IEC 60884-1 and 60669-1.

Modern standardized equipment for low-current circuits allows you to connect up to four pairs of working contacts in a circuit

The connection of modern stationary telephone models for use at the household level is carried out through sockets equipped with one pair of contacts. Cases of such devices are mounted in the cavity of the plastic module and are marked with RJ-11 symbols.

Between the two contacts, which are compact metal plugs, the cores of the supply wire are buried. Models of RJ-11 standard are recommended for connection of devices to telephone lines of linear type.

In the central part of the plastic module, called the manipulator, there are brass contacts through which an electrical network is created between the telephone and the PBX.

To connect two devices to separate lines and create office mini-PBXs, devices of the RJ-12 and RJ-14 standard are used. Universal four-wire connectors are suitable for most models of telephone equipment.

To connect several devices at once, you just need to assemble the sockets in series into blocks, while observing the scheme: the first line is connected to contacts No. 2 and No. 3, and the second line to No. 1 and No. 4. Devices of this series are more used to create a mini-PBX in the arrangement of office space.

The model with a combined RTSHK-4 and RG-11 connector is mainly used when it is necessary to connect a vintage exclusive old telephone with new telephone wiring.

Installing an adapter allows you to connect plugs of both old and new standards with lines equipped with modern technology.

The main difference between RJ-25 standard devices is three pairs of working contacts. For this reason, only a qualified person who is well versed in telephony and electrical matters should connect such equipment.

The RJ-45 connector has four pairs of pins, but only two pins closer to the center are used to create an electrical circuit.

Installation schemes and connection methods

Connecting a telephone socket is much easier than its electrical counterpart. But the process, which involves working with low, but still voltage, requires accuracy and caution.

The wiring diagram for a telephone socket is quite simple and involves connecting the two ends of a telephone wire to the corresponding contacts in the socket.

When installing a telephone socket, you can use one of two mounting methods:

• open - involves installation in an overhead way;
• closed - in which the telephone line is hidden inside the wall.

When choosing a gasket method, they are guided by the design of the walls, the service conditions of the communication line and the pretentiousness of the design of the room itself. Overhead sockets do not look very aesthetically pleasing, but they are ideal in terms of service speed: they can be removed from the support in a matter of minutes and the integrity of the contacts can be assessed.

The open method can be carried out without mounting it on the wall at all, by placing the device on the floor, and hide the cable leading to it under the plinth

To protect open wires from mechanical damage, decorative plastic cable channels are used. On sale they are found in the form of wall structures and floor plinths. It is convenient to monitor the condition of the wire in them through one- or two-sided snap-in panels.

For closed installation, the KSPV cable is most often used. The single core of this cable is made of copper wire, and the outer sheath is made of white-painted polyethylene.

The laying of the telephone line is also performed using the TRP distribution cable. It has a divisive base. The core of this single-pair wire is also made of copper and insulated with polyethylene.

For ease of use and harmonious combination with the design, telephone sockets are not installed separately in the wall, but are included in the socket block

To decorate the connection points and make them less visible to outsiders, the devices are placed behind TV screens and monitors, and also built in behind the facade of wall furniture.

A separate line is to highlight the sockets built into the plinth. The main thing is to choose models whose front panel fits snugly against the surface of the plinth. Otherwise, over time, it will begin to move away from the base, exposing unsightly seams.

How to connect the telephone socket

When installing a telephone socket, it should be taken into account that the voltage for low-voltage communication devices does not exceed 60 volts. But even a lower voltage can still create a current, causing discomfort to a person.

At the moment when there is a call on the telephone line, the voltage rises to a figure of 110-120 volts. And it is capable of giving serious pain upon contact. To a value of 12 volts, it decreases only after removing the tube.

All work on connecting the current telephone circuit in order to comply with safety regulations is recommended to be carried out with protective rubberized gloves

The principle of placement and method of installation of telephone sockets practically does not differ from the technology of installation of electrical sockets. Since today the most common devices that have the J-11 and J-12 standard, we will consider the intricacies of connecting a telephone socket using their example.

Stage #1: Preparatory work

The first thing to do is to study the schemes of internal communication. They are attached to the instructions for the product.

When connecting the J-11 and J-12 standards, problems should not arise: you just need to connect the wires of the appropriate polarity. The main thing is that in the plug suitable for the device, the wires should be brought out in a mirror image of the socket contacts.

If you unknowingly purchased and plan to install the J-25 standard, the design of which involves 6 pins, use only the 3rd and 4th pins for connection.

According to the standard, a wire of a certain color is connected to each contact, this solution increases the convenience of maintenance and facilitates repairs.

When planning to use an old-standard device, you should think about purchasing a universal outlet in advance. It is equipped with a four-pin connector and connector. In addition to the socket itself, it is also necessary to prepare a two-wire wire with a cross section of 0.3-0.5 mm.

It is necessary to determine and outline the place and in advance.

From the tools for the work it is necessary to prepare:

• building level;
• cross knife;
• voltmeter;
• screwdriver
• wire cutters;
• graphite pencil;
• protective gloves;
• Double-sided tape;
• perforator (if mounting a new point).

When choosing a screwdriver, they are guided by the type of surface and dimensions of the screws used for fastening. To minimize the likelihood of electric shock, it is better to perform all manipulations with a screwdriver, the handle of which has insulation.

Having outlined the installation location of the connection point, using the building level, correct the horizontal and vertical position of its position

To connect a hidden type socket, you must first make a hole in the wall for its installation -. This can be done using a puncher equipped with a special crown with a diameter of 60-70 mm.

In the absence of such, the work can be done with an ordinary hammer with a chisel. But manual labor will take much more time and effort. Then, to the hole made, it is necessary to make a channel for laying the telephone cable.

There are certain nuances when installing a socket box in.

Stage #2: Stripping the ends of the veins

Before proceeding with the melting of the cores, it is necessary to strip the ends of the wires by removing the outer layer. Bare enough extreme 4 cm of the wire.

When stripping a telephone cable, remember that it is very vulnerable to damage. And broken wires will only lead to equipment malfunction. Therefore, it is important to use a specialized .

Since it is not always possible to carefully cut the first time, experienced craftsmen recommend making some margin along its length when laying the cable. The extra wire can then be hidden under the cover of the device.

Removing the protective insulation from the ends of the cable should be done very carefully, using a cross-cutting knife, a sharply sharpened blade or side cutters.

The task of the master is to strip the ends of the wires from the braid so that in their bare form they are intact and devoid of any defects.

Step #3: Connecting the Outlet Wires

Stripped wires with separated conductors are connected to the connectors of the box itself, focusing on the designations indicated on the front panel of the indoor unit. With a closed installation method, for ease of connection, the wires are made protruding beyond the wall plane by 50-80 mm.

To observe the polarity when connecting wires, they are guided by the rule: red insulation on the line with the “-” sign, and green braid on the “+”

If the polarity rule is not followed, there is a high risk that the telephone will malfunction from time to time during operation.

At this stage of work, you will need a voltmeter. With it, you need to check the readiness of the communication line. The voltage in the line should be in the range of 40-60 volts.

The connected cable cores are applied to the clamp and tightly tightened with special screws, ensuring a secure fit. The shape of the grooves to which the cores are attached facilitates the installation process. It is not necessary to wrap the joints with electrical tape.

When connecting devices, the design of which is equipped with four fork-shaped contacts, only two central contacts are used.

When performing surface mounting, at the final stage it remains only to close the housing cover with a latch and fasten it with screws. The finished outlet is attached to the wall or floor, "planting" it on double-sided tape.

With a closed installation method, making sure that the wires are not intertwined in the socket, according to the applied markings, the indoor unit is mounted in the wall. Having given the block the desired position, the structure is fixed with expansion screws and self-tapping screws.

At the final stage, it remains only to eliminate the gaps between the socket box and the wall, covering it with gypsum mortar, and also close up the channels with the laid telephone cable.

After the gypsum has acquired the desired strength, the protective edging is put in place and the front panel is attached. In modern devices, the protective edging snaps onto the indoor unit, and the front panel is attached by screwing in screws.

If you need to connect a multi-socket socket that allows you to install several telephone sets, you must adhere to the same technology as when installing the classic version of the device. The only difference in the process is the increase in the number of conductors that need to be connected.

Conclusions and useful video on the topic

Device connection guide:

Replacing an old socket with a combined RTSHK-4 and RG-11 connector with a similar new device:

There is nothing difficult in connecting a telephone socket. The only thing - you should not save money by purchasing equipment of a low price range. It does not always meet the standards and can fail even at the connection stage.

Share your personal experience of connecting a telephone socket, leave comments on the article and ask questions. The contact form is located below.