The name of the combined electrical filter for frequency division. It is used in telecommunication networks when using a common physical medium (subscriber line) by various means of communication, for example, an analog telephone and an ADSL modem.
ADSL splitter
ADSL splitter
ADSL splitter separates the frequencies of the voice signal (0.3 - 3.4 kHz) from the frequencies used by the ADSL modem (26 kHz - 1.4 MHz). Thus, the mutual influence of the modem and the telephone set is excluded. Externally, it looks like a small box with three RJ-11 connectors: 1) "Line" (incoming); 2) "Phone" (outgoing); 3) "ADSL" (outgoing). Allows the ADSL modem and telephone / fax machine to work on the same telephone line independently and simultaneously.
In some cases, instead of a splitter, a microfilter can be used, installed on the client's side at the point where an analog phone or fax machine is connected. There are also connection schemes where splitters and microfilters are used to connect terminal devices at the same time.
See also
Links
- The prototype of the modern splitter. Germany, 1939-1945.
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Synonyms:See what "Splitter" is in other dictionaries:
- (te), a, m. (eng. splitter ... Dictionary of foreign words of the Russian language
Ex., Number of synonyms: 1 device (117) ASIS synonym dictionary. V.N. Trishin. 2013 ... Synonym dictionary
splitter- (2 m); pl. split / tters, R. split / tters ... Spelling dictionary of the Russian language
Splitter Splitter is a combined electric filter for frequency separation of channels Splitter is an aerodynamic plane used to restrict air flow under the car bottom Surname Splitter, Thiago Brazilian professional ... ... Wikipedia
Tiago Splitter Tiago Splitter ... Wikipedia
This term has other meanings, see Splitter (disambiguation). Splitter car DTM Splitter (eng. Splitter splitter) aerodynamic plane, used to restrict the flow of air under the bottom, and, accordingly, create ... ... Wikipedia
phone splitter- [Intent] EN phone line splitter Allows use of two pieces of equipment at once, such as a modem and phone. Computing network topics EN phone line splitter ... Technical translator's guide
Splitter In general, a splitter is a device that allows you to split (divider) or combine (combiners) a microwave signal. It is characterized by a division ratio - 1: 2, 1: 3, 1: 4, etc. ADSL splitter ADSL splitter ADSL splitter splits frequencies ... ... Wikipedia
This term has other meanings, see Splitter. ADSL filter (zarg. Splitter from English. Split to split) combined electrical filter for frequency division of channels. It is used in telecommunication networks when ... ... Wikipedia
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ADSL splitter for the Internet is a device necessary for frequency separation. In other words, this is a small device that is necessary for the normal functioning of the modem and the telephone set on the same subscriber line at the same time.
Let's take a look at why you need a splitter. The principle of its operation includes a clear division of one communication line into two data transmission channels:
- A channel for the transmission of voice calls, which operates in the frequency range from 0.3 to 3.4 kHz.
- A data transmission channel for accessing an external local network (operates within the frequency range from 26 kHz to 1.4 MHz).
Outwardly, the splitter for the Internet has a small size and practically does not differ from the size of an ordinary telephone socket. No additional food is required. Equipped with three RJ-11 ports, one of which is intended for connection to an existing subscriber telephone line, and the other two for connection to an ADSL modem and a subscriber's telephone set, respectively.
ADSL splitter connection diagram
Today there are several operating options for connecting a splitter to a subscriber line:
- The simplest and most common option is a standard connection. In this case, using a patch cable, the ADSL splitter is connected directly to the existing telephone line. Next, there is the connection of devices (connectors for the telephone and for the ADSL modem, respectively).
- Cascade connection. It arises when it is necessary to connect two or more telephones in parallel with the modem. This method is implemented in the internal network and, in turn, is divided into two subtypes:
- Connection using two splitters. In this case, the second device is connected through the connector intended for the modem, and the further distribution of the network is similar to the above-described generally accepted method of installing an ADSL splitter.
- Connection using a splitter and filter. This scheme is almost the same as the previous one. The exception is the moment that the second phone is not connected through a splitter, but in parallel with the subscriber socket.
A wired Internet connection is renowned for its speed and unlimited downloads. The connection to the network is carried out via a landline telephone cable, and if you do not need the latter, then you will not have any problems. However, when a stable internet connection and clear telephone communication are required, a splitter should be used. This device will create a clear and stable signal for both lines.
Description
A splitter is a compact electronic device with signals with different frequencies. The presented device allows you to connect several types of equipment to one coaxial line. For example, a TV and a modem.
Structurally, it is a connector equipped with several ports for connecting devices. The main parameter that characterizes the splitter is the number of connectors for connecting devices. Their number varies from 2 to 16 or more. The more ports there are, the more functional the device is considered.
In addition to standard devices, you can find reinforced splitters on the market. These products separate and simultaneously amplify the signal to transmit it over long distances, which is very convenient in the absence of fiber optic cables.
The screenshots are taken from the documentation for ADSL modems ZyXEL, HUAWEI, D-Link, etc. Let's consider the connection option using the example of the ZyXEL AS 6 EE splitter.
ADSL splitter connection. The most common option.
1. In connector LINE the splitter is connected to the city telephone line. This connector is sometimes referred to as LINE-IN, for example ECI-TELECOM splitters. I have not met other options. Bends or branches are undesirable. This significantly reduces the reliability of the ADSL modem. If there are taps / branching to the splitter, then the telephones must be switched on through "microfilters". Instead of a microfilter, you can use another ADSL splitter.
2. In connector MODEM the splitter is connected to an ADSL modem. In ECI-TELECOM splitters, this connector is sometimes called LINE-OUT, in D-Link splitters this connector is called ADSL... at SIEMENS it is called NT... (Network Termination)
3. In connector PHONE the splitter is connected to telephones, faxes, mini-automatic telephone exchanges, Dial-UP modems, etc. Everything that used to hang on this phone number will now be included in the splitter, in the connector PHONE! This connector is sometimes referred to as TEL, - D-Link splitters, microfilters, ISDN splitters. For SIEMENS splitters, this connector is called POTS(Plain Old Telephone Service)
General option for connecting the ZyXEL AS 6 EE ADSL splitter, for example, the ZyXEL 660H modem is taken
How to connect ADSL splitter
We use the highest quality telephone wire. Do not use power wires. It is advisable to completely get rid of the cable TRP ("carnation noodles"). Indoors, the distance from the ADSL splitter to the ADSL modem can be any. But the total distance between your ADSL modem and the provider's modem (DSLAM) installed on the PBX should not exceed the theoretical 5-6 km. (Cable length) The best option is to run a CAT 5 twisted pair from the MCT on the staircase to the splitter and from the splitter to the ADSL modem. For example:
The two-pair cable is ideal for RJ11 termination. For the line, we take a blue or orange pair. It is forbidden to take wires from different pairs!
Splitters use RJ11 connectors, but older ECI-TELECOM models and ISDN ZyXEL splitters use a connector MODEM replaced with RJ45. All splitter connectors use two center pins.
Possible options for connecting ADSL splitter "a
Such a connection is impossible with SIEMENS splitters, their NT / ADSL output is decoupled by capacitors. The direct current for the phone connected to the second splitter will not pass.
The connection diagram using microfilters is used in desperate situations when it is impossible to change the telephone wiring in the room. This is an extreme option, it is not recommended to use it. Sometimes, in order to save money, a microfilter / splitter is not used at all. As a result, the phone interferes with the operation of the ADSL modem (frequent loss of connection). There is noise in the phone when the ADSL modem is working. Instead of a microfilter, you can use another ADSL splitter. In this case, the second splitter has a connector MODEM not used. Connect the remaining two connectors as shown in the figure below:
In general, if you look at an agreement with a telephone operator, then in it, in the agreement, it says - "one telephone line - one telephone set." If you have an office, then connect the line to the mini-automatic telephone exchange. If you have an apartment and you desperately need a telephone in every room, then connect the line to the DECT base, and then the radio tubes to each room. Of course, one or two phones connected through a splitter do not load the line too much, but five or more phones are already too much.
By connecting all these endless splitters, microfilters, telephones to the line, you increase the capacitive load on the line. Thus, you yourself degrade the quality of telephony. A situation may even arise that, due to the excessively increased capacity in the line, the ringing signal will cease to pass. Also, the more connections, connectors, contacts, the less reliability.
How not to connect ADSL splitter
The most common mistake is when connecting phones to a splitter.
Another option is to turn on the splitter somewhere, turn on the ADSL modem somewhere. Phones will be connected wherever possible. It is clear that all this works "somehow".
Sometimes they connect a telephone line to the splitter connector PHONE... Telephone sets are plugged into the splitter connector LINE... With this inclusion, the telephones will work, the ADSL modem will not work.
The strangest thing is that modem manufacturers draw in the documentation the wrong location of connectors when connecting a splitter. The modem is drawn in all the details, but for some reason the splitter is drawn somehow. Consider this.
A splitter is a device that allows you to perform frequency separation of several types of signals. Thus, the splitter scheme involves the simultaneous connection of several devices at once to a single line using a coaxial cable. For example, the Internet and cable TV can be connected right away.
Purpose and arrangement of splitters
The design of a standard splitter consists of a connector equipped with ports for interconnecting various devices, including telephones and modems. In each model, the number of ports can be different, within 2-16 points. The sides of the device are used to place them.
The connector types also differ depending on the devices used. The number of installed ports significantly affects the functionality of one or another splitter. The more such connectors there are, the higher the capabilities of a particular device. It should be remembered that it is not recommended to connect splitters with each other, as this leads to a decrease in their performance.
In addition to standard designs, there are so-called reinforced splitters. These devices, in addition to transmitting conventional signals, allow the transmission of weak signals over long distances. A good coaxial splitter should only include high-quality components, as low-quality components will gradually attenuate the transmitted signal. Connecting different devices at the same time may result in interference and poor transmission quality. In high-quality devices, such disadvantages are completely eliminated.
Connection diagram
On the line supplied to the splitter, it is recommended to perform splices and twists in a minimum amount. Transitional elements also need to be used very carefully. The ideal option is a direct connection between the PBX and the splitter.
If there is only one and one telephone in the apartment, located not far from the computer, the LINE splitter connector is connected directly to the socket, PHONE - to the telephone, and MODEM - to the modem.
If there is a telephone in the next room, the modem can be connected directly to the telephone line, and only the telephone is connected to the splitter. The modem connector remains unoccupied. If several telephones are connected in parallel at once, then the wiring of the telephone wires is redone in such a way that they all pass through the splitter. As a fallback, you can use several additional splitters for each phone. Thus, each device is provided with an individual microfilter.
When the telephone is paired, the splitter is included in the line break located in front of the diode attachment. The wire coming out of the PHONE jack is connected to the diode attachment, and the phone itself should not be plugged directly into the splitter. After that, the functioning of the phone is checked, first of all, the observance of the polarity of the wires. If during the check it turned out that the phone does not work and it is impossible to call anywhere on it, the telephone wires must be swapped among themselves at the connection point.
In the event that the circuit is not correctly executed, interference and extraneous noise may appear in the phone. Modem operation becomes unstable, up to a complete loss of connection. Therefore, the connection of the splitter and other equipment must be performed by qualified personnel.
How to make a splitter with your own hands
