When a regular telephone was developed, no one could come to mind that the telephone wires would once be used to transfer digital signal. Therefore, for the functioning of the Internet and the phone on one line had to use a special separation device.

Why do you need splitter

If the high-frequency signal (Internet, ADSL) will work simultaneously with the low-frequency (PSTN), then the tube will constantly hear interference in the form of noise (the phone electronics will "try to decipher the RF signal). On the other hand, the low-frequency component of the signal will "slow down" the transmission of information from the server, because The modem considers the LF signals for the error that needs to be corrected.

To protect both signals (analog telephone and digital computer) from mutual influence, a filter (or splitter) is used, connected between the telephone cable, a modem and a telephone. Externally, the separation filter is a small plastic box having one input for a telephone cable and a couple of outputs under the device and a modem.

How Splitter works

The filter obtained at the input strip is divided into 2 parts: one - for a telephone signal, the other is for the ADSL signal. As a result of the separation, the device displays the corresponding frequency for each output jack. Telephone equipment, which includes devices, faxes, answering machines, etc., gets frequencies in the range up to 3400 Hz, and the modem is all frequencies over 25000 Hz.

If there are several phones on the same cable in the room, the splitter is installed at one outlet. In this case, you have to pull a separate wire to a modem with an ADSL output. This is not very convenient, because You have to shift the telephone line to and modem and phones can work simultaneously. The problem can be solved by using microfilters. These devices have one output, one input. A similar filter is mounted before each telephone. Sometimes, for convenience, manufacturers produce telephone wirewhere the microfilter is already built in the form of thickening. In some cases, the device is mounted directly into the junction box. Splitter, in essence, "Advanced" microfilter. The latter works in the same way as his "colleague": shares frequency range, not missing high frequency signals into the phone; and prevents penetration low frequencies in the modem.

How to connect correctly ADSL Splitter.

Screenshots are taken from the documentation for the Zyxel ADSL modems, Huawei, D-Link, etc. Consider the connection option on the example of the ZyXEL AS 6 EE splitter.

Connecting an ADSL splitter. The most common option

1. The Lineflitter connector is connected to the urban telephone line. Sometimes this connector is called Line-in, such as ECI-Telecom splitters. Other options did not meet. Unwanted taps or branching. This significantly reduces the reliability of the ADSL modem. If there are taps / branching to Splitter, then telephone sets must be included through "Microfilters". Instead of a microfilter, you can use another ADSL splitter.

2. With the MODEMSL connector connected ADSL modem. In ECI-Telecom splitters, this connector is sometimes called Line-Out, in the D-Link splitters, this connector is called ADSL. Siemens is called NT. (NETWORK TERMINATION)

3. The PH connector connects telephone sets, faxes, mini-PBX, Dial-Up modems, etc. All that had been hanging on this phone numberNow it will be included in the splitter, in the phone connector! Sometimes this connector is called TEL, - D-Link splitters, microfilters, ISDN splitters. Siemens Splitters This connector named Pots (Plain Old Telephone Service)

ADSL splitter zyxel AS 6 EE

The general option for connecting the ADSL splitter ZyXEL AS 6 EE, for example, the ZyXEL 660H modem is taken

How to connect adsl splitter

Telephone wire Using the most high Quality. Can not use power wires. It is advisable to completely get rid of the Cable TRP ("noodles under the carnation"). Indoors the distance from the ADSL splitter to the ADSL modem can be any. But the overall distance, between your ADSL modem and provider modem (DSLAM) installed on the PBX, should not exceed the theoretical 5-6 km. (Cable Length) Best Option - Stretch vitua couple Cat 5 from the CGT on the landing to the splitter and from the splitter to the ADSL modem. For example:

The double cable is ideal for termination under RJ11. For the line we take a blue or orange pair. Take wires from different steam is prohibited!

The splitters use RJ11 connectors, but in the old ECI-Telecom models and the ZyXEL's ISDN splitters connector The Modem connector is replaced by RJ45. In all connectors of splitters, two central contacts are undermined.

Possible options for connecting ADSL Splitter "A

Cascading connection.

Such a connection is not possible with Siemens splitters, they have an NT / ADSL output by condensers. D.C For the phone connected to the second splitter, will not pass.

Cascading connection

Connection scheme using microfilters used in hopeless situationsWhen changing the telephone wiring indoors is not possible. This is an extreme option, it is not recommended to use it. Sometimes, in order to save the microfilter / Splitter is not used at all. As a result - the phone interferes with the operation of the ADSL modem (frequent loss of communication). In the phone noise when working ADSL modem. Instead of a microfilter, you can use another ADSL splitter. At the same time, the second splitter connector Modem is not used. The remaining two connectors are connected as shown in the figure below:

Use of microfilter

In general, if you see the contract with the operator telephone communication, then in it, in the contract, it says - "one telephone line is one telephone". If you have an office, then connect the line in the mini-PBX. If you have an apartment and you need a phone in each room, then connect the line in the DECT base, and then the radio tubes in each room. Of course, one or two phones connected through the splitter, do not load a line, but five or more devices are already busting.

Connecting all these endless splitters, microfilters, phone numbers, you increase the capacitive load on the line. Thus, you will worsen the quality of telephony. It may even occur such a situation that due to excessive increased tanks in the line will stop passing the call signal. Also, the more connections, connectors, contacts, the less reliability.

How not to connect ADSL Splitter

The most common error is when connecting phones to Splitter.

Another option - the splitter includes somewhere, somewhere will turn on an ADSL modem. Wherever possible, telephones are connected. It is clear that everything works "somehow".

Sometimes you connect the telephone line into the phone splitter connector. Telephone devices include LINE splitter connector. With such an inclusion, telephone devices will work, the ADSL modem will not work.

The strangest thing is that modems manufacturers draw in the documentation. Incorrect location of connectors when connecting splitter. The modem is drawn in all details, but for some reason the splitter is drawn somehow. Consider this.

Publication: www.cxem.net

See other articles section.

ADSL splitter is an electric combination filter created to separate channels. The word split from English is translated as "divided". The device is used in telecommunications. In order to connect to the network through the ADSL line, you must use splitter. It shares signals in the telephone line.

What is it

The ADSL splitter is used to separate the frequency of the voice signal from the frequencies used by the modem. It provides the well-established operation of devices that are connected to the telephone line. Splitters are equipped with special overvoltage protection and currents arising in cables during a thunderstorm. The device is small, similar to a rectangular box with three slots "Line", "Phone", "ADSL". Thanks to him, the modem and the phone can work without interruptions on the same line and do not depend on each other.

Sometimes instead of the device use a microfilter that is installed at the connection site of the telephone. Schemes are often used in which the microfilters are connected simultaneously with spliters. The ADSL splitter is two types: Annex A and Annex B. ADSL technology is translated and decrypted as an "asymmetric digital subscriber line", it is high-speed.

Specifications

Splitter ADSL. D-Link DSL 30CF is used to separate the frequencies of the equipment and voice signal. This splitter model is installed at the input of the phone, which avoids the influence of the modem signals and the device, to provide them with a well-defined job. This splitter has the following specifications And Description:

• we are necessary for transmitting information and voices on one telephone line without interruptions;
• for quick installation, a double-sided adhesive plate is used;
• there is one connector for connecting to the line, one for the phone, one for the modem;
• supports the Network Standard Annex A;
• device dimensions - 13x10x2.8 cm.

Connect splitter is simple enough, the main thing is compliance with the sequence.

Purpose

The ADSL D-Link splitter is used to connect several telephone sets to the line in different rooms. Filters have many security elements, and they are designed to function in different systems. They filter the high-frequency signal at frequencies of 20 and 50 kHz. With the help of ADSL technology is asymmetrically divided bandwidth With the priority of incoming traffic.

The signal transmission occurs at different frequencies, therefore no noise is noted on the telephone line. The technology was widely distributed during the development of high-speed Internet. In addition, the data is transmitted at high speed, and the material costs are always minimal for the user. In order to take advantage of the technology, the subscriber must have an analog telephone line with two wiring and the corresponding modem. Signals are transmitted at different frequencies, so the splitter performs the function of their separation and reduce interference.

Pros and cons

Splitter has three connections: one for the entrance and two exit. The input is connected by the telephone line, and in the outputs - the cable from ADSL and the phone. During joining, it is impossible to confuse them, otherwise the modem will not be connected to the provider. In order to protect the connection and splitter, the inductors are used in it. In expensive devices, manufacturers install gas discharge fuses.

The advantages of ADSL technology include simplicity of deployment, a small price, high reliability. If the connection breaks, it is restored automatically. The minuses include dependence on the quality of the cable. For such an connection, it is best to use ADSL devices that have speed limit up to 24 megabits, low speed for outgoing traffic. In addition, the modem needs to be configured under a specific provider.

Parameters

ADSL Annex A splitter works on a standard that transmits high speed information along with analog telephones. Functioning on this line, it uses channels from the sixth to thirty-first for data transmission, and from thirty-eighth two hundred and fifty-fifth - for their reception. Such a splitter works on the G.Lite protocol. The Annex B standard transmits high-speed data with ISDN telephony. The device uses channels to transfer data from the thirty-third fifty-seventh, and for reception - from the sixty-third to two hundred and fifty fifth.

Splitter has the specification of the ADSL local network, the load capacity for the phone output, the maximum operating current and pulse, a certain time Triggering voltage and current protection, discharge voltage of the arrester, passing resistance. All these parameters are indicated in the instructions. Splitters are customary to install in rooms maximally protected from direct sunlight and high humidity. Weigh the device for no more than forty grams.

Features

How does the ADSL splitter work? This is a passive network element. It shares the light signal from one to several ports between the subscriber and stationary equipment. Such devices are also called optical divisors. Splitters are very compact, it is inexpensive, independently divide the modes into different directions, have low losses and high in the opposite. By the parameters of the wavelength, they are single-zone, two-pointed, three-pool, broadband.

There are several splitter connection schemes. The most common is standard. For it, a connecting cable is used. The device is connected to the telephone line, and then the device is a modem and a telephone. When cascading connected, you must connect several phones in parallel with the modem. This scheme is suitable for internal connection And another two ways are separated: accession with two splitters and using the filter and splitter.

If you need to connect the working office to the Internet, it is better to seek help to professionals. They will select special equipment, configure it. In this case, the splitter and a set of filters often use. For home connectivity, you will need only the device and telephone line. To all models included attached detailed instructions on network creation.

How to connect

Can I independently configure the ADSL splitter? Connecting this device home is not a lot of work, as well as the setting.

1. In the input connector, you must attach the telephone line. If the phone has branching or taps, it needs to be connected via a microfilter, otherwise the modem will work incorrectly and slowly.
2. Connect the ADSL modem into the Modem instrument connector. IN different models Splitters It is indicated as Line-Out, ADSL, NT.
3. Then phone, modem, fax, mini-PBX connect to Phone connector.

Splitter and modem are joined on different distances Friend from each other. Experts advise use as telephone qualitative wires, but not power.

ADSL Splitter for the Internet - the device required for the separation of frequencies. In other words, that's small devicewhich is necessary for the normal functioning of the modem and the telephone device on the same subscriber line at the same time.

Let's look at why the splitter is needed. The principle of its operation includes a clear division of one communication line into two data channels:

• Channel for voice calls, which operates in the frequency range from 0.3 to 3.4 kHz.
• Data channel for exit to external local network (Works within the frequencies from 26 kHz to 1.4 MHz).

Externally, the splitter for the Internet has small dimensions and is practically no different from the size of an ordinary telephone socket. Additional nutrition does not require. It is equipped with three RJ-11 ports, one of which is designed to connect to an existing subscriber telephone line, and the other two to connect to the ADSL modem and the subscriber's telephone apparatus, respectively.

ADSL Splitter Connection Scheme

To date, there are several acting splitter connectivity options to the subscriber line:

• The easiest and most common option is a standard connection. In this case, with the help of a connecting cable, the ADSL splitter is connected directly to the existing telephone line. Next, the device is connected (connectors for the phone and for the ADSL modem, respectively).
• Cascading connection. It occurs if you need to connect two or more telephone sets in parallel with the modem. This method of implementation 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 mounting the ADSL splitter.
• Connection using splitter and filter. This scheme is almost similar to the previous one. The exception is the moment that the second phone is connected not through the splitter, but parallel to the subscriber socket.

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ADSL splitters. Device. Connection schemes

How to connect ADSL Splitter

Screenshots are taken from the documentation for the Zyxel, Huawei, D-Link modems, etc.

Consider the connection option on the example of the ZyXEL AS 6 EE splitter.

Fig.1.1. Connecting an ADSL splitter. The most common option.

1. In the connector Line Splitter plug in the city telephone line. Sometimes this connector is called Line-in, for example, ECI-Telecom splitters. Other options did not meet.

Unwanted taps or branching. This significantly reduces the reliability of the ADSL modem. If there are taps / branching to Splitter, then telephone sets must be included through "Microfilters". Instead of a microfilter, you can use another ADSL splitter.

2. In the connector Modem. Splitter plug in ADSL modem. In the ECI-Telecom splitters, this connector is sometimes called Line-Out., in D-Link splitters, this connector is called ADSL. Siemens is called Nt. (Network Termination).

3. In the connector Phone Splitter plug telephones, faxes, mini-PBX, Dial-Up modems, etc. All that had been hanging on this phone number, will now be included in the splitter, in the connector Phone! Sometimes this connector is called TEL.- D-Link splitters, microfilters, ISDN splitters. Siemens splitters are called this connector Pots. (PLAIN OLD Telephone Service).

Fig.1.2. ADSL Splitter Zyxel AS 6 EE.

Fig.1.3. The general version of the Connection of the ADSL splitter ZyXEL AS 6 EE, for example, is taken by the ZyXEL 660H modem.

How to connect ADSL Splitter.

Telephone wire Using the highest quality. Cannot use power wires. It is advisable to completely get rid of the Cable TRP ("noodles under the carnation").

Indoors the distance from the ADSL splitter to the ADSL modem can be any. But the overall distance, between your ADSL modem and provider modem (DSLAM) installed on the PBX, should not exceed the theoretical 5-6 km. (Length of cable)

The best option is to stretch twisted a pair of Cat 5 from the CRT on the staircase to the splitter and from the splitter to the ADSL modem. For example: twisted cable pair UTP., category 5, 2 pairs, Solid UTP2-C5E-SOLID-GY

Fig.2. Double cable.

The double cable is ideal for termination under RJ11. For the line we take a blue or orange pair. Take wires from different steam is prohibited!

The splitters use the RJ11 connectors, but in the old models of ECI-Telecom and in ISDN splitters of the company ZyXEL connector Modem. Replaced on RJ45.

In all connectors of splitters, two central contacts are undermined.

Possible options for connecting ADSL Splitter "a.

Cascading connection. Such a connection is not possible with Siemens splitters, they have an NT / ADSL output by condensers. Permanent current for the phone connected to the second splitter will not pass.

Fig.3.1. Cascading connection.

The connection circuit in Fig.3.1 is used in hopeless 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 the microfilter / Splitter is not used at all.

As a result - the phone interferes with the operation of the ADSL modem (frequent loss of communication). In the phone noise when working ADSL modem.

Instead of a microfilter, you can use another ADSL splitter. In this case, the second splitter connector Modem. not used. The remaining two connectors are connected as shown in Fig.3.2.

Fig.3.2. Use of microfilters.

In general, if you see a contract with a telephone operator, then in it, in the contract, it says - "one telephone line is one telephone".

If you have an office, then connect the line in the mini-PBX. If you have an apartment and you need a phone in each room, then connect the line in the DECT base, and then the radio tubes in each room.

Of course, one or two phones connected through the splitter, do not load a line, but five or more devices are already busting.

Connecting all these endless splitters, microfilters, phone numbers, you increase the capacitive load on the line. Thus, you will worsen the quality of telephony. It may even have such a situation that due to an interrogated tank in the line will stop the call signal.

Also, the more connections, connectors, contacts, the more reliability.

How not to connect ADSL Splitter.

Electronics is a science of contacts. When it is necessary - it is not. When not Dadado - it is (s)

The most common error is when connecting phones to Splitter.

Another option - the splitter includes somewhere, somewhere will turn on an ADSL modem. Wherever possible, telephones are connected. It is clear that everything works "somehow".

Sometimes connecting the telephone line into the splitter connector Phone. Telephone devices include a splitter connector Line. With such an inclusion, telephone devices will work, the ADSL modem will not work.

The strangest thing is that modems manufacturers draw in the documentation. Incorrect location of connectors when connecting splitter. The modem is drawn in all details, but for some reason the splitter is drawn somehow. If you look at the photo ADSL of Splitter and look into the documentation, it turns out that the phone connector should be where the LINE connector is located.

See ourselves, screenshots are taken from the documentation for modem. Exception only for ISDN Splitter ZyXEL in Fig.9.1.

Fig.4.1-4.2. Zyxel splitter connectivity options. Taken unchanged from the documentation.

Fig.4.3-4.4. Connection options Huawei splitters. Taken unchanged from the documentation.

In the last picture, apparently tried to depict the options for connecting the microfilters.

ADSL Splitter Siemens.

model S50010-D1010-A200-01.
Protection - two thermal articles (F1 and F2), GD1 and C4 discharger.
Telephone Load Capacity - 70NF
Power resistance - 12 ohms
Output to the ADSL modem is capacitive.
Filtering is a system of strip / resonant transformers.
Very high-quality RJ11 connectors with shielding protection.
Bilateral board, fiberglass.

Fig.5.1. Siemens Splitter ADSL circuit.

F1, F2 - 0.25A GD1 - CG2-350 R8 - 470 OM C1, C2 - 0.1UF 400V C4 - 33PF 1,6KV C5-C8, C10 - NONE C11, C15 - 10NF 630V C12 - 180PF 630V C13, C14 - 2,2NF 400V C16 - 150PF 630V C17-C19 - 6,8NF 400V C20 - 4,7NF 400V C21, C22 - 3,3NF 400V C23 - 22NF 1KV

S50010-D1010-A200-03 model diagram is similar.
Transformers are made as a standard product. (how in network cards)
Winding transformers are more complicated. Perhaps inside the assembly there are capacitors.
Telephone Load Capacity - 50NF

Frequency characteristic Siemens splitter.

Fig.5.2. Line-Pots signal.

Fig.5.3. Line-NT signal passage.

Just some hi-end

Siemens S50010-D1010-A200-01 and S50010-D1010-A200-03 splitters. The housings are the same, but at the ... A200-03 fee less (in S50010-D1010-A200-03, the excess part of the case can be cut independently).

Fig. 5.4-5.5. Siemens splitters.

ADSL Splitter ECI.

ECI-Telecom splitter circuit is more compact. There is no union for ADSL. Protection is the only varistor. Load capacity for telephony - 200NF Power Resistance - 12 Ohm Board Steklotelitol, Dudnerless. Very high quality 6-pin RJ11 connectors. (Speaking ADSL - RJ45) Unused contacts in LINE and PHONE connectors are coordinated. Splitter can be converted to Siemens, adding a chain to the rupture, between LINE and MODEM connectors, inexposable SMD condensers 0.1 - 0.06 μF x 250 - 400 volts. Place on the board is.

Fig.6. Splitter Eci-Telecom.

ADSL Splitter Zyxel AS 6 EE.

Protection - VR1 varistor. Load capacity for telephony - 90NF Power Resistance - 14 Ohm Releaseout for ADSL Modem - No. Filtering is a system of strip / resonant transformers. Board one-sided, getinax. The main problem is the disappearance of contact, poor-quality soldering of connectors and details.

Fig.7.1 Zyxel splitter scheme (PSTN).

C1 - 56NF 400V C2-C4 - 33NF 400V Frequency characteristic of the ZyXEL splitter (PSTN) (it is clear that the passage of the Line-ADSL signal is useless :)

Fig.7.2. Line-ADSL signal passage.

Fig.7.3. The passage of the Line-Phone signal. (It is interesting to compare with Siemens).

Fig.7.4. Zyxel splitter (PSTN).

Fig.7.5. D-Link splitter. ... or Huawei. I do not remember:).

Fig.7.6. This is also an ADSL splitter of the company D-LINK. :).

ADSL Microfilter.

Fig.8.1. ADSL Microfilter.

The scheme is very similar to the Soviet filters of AVU and WORV's alarm filters. Now the size of the microfilter is five times less. frequency characteristic To remove there is no pleasure. Some kind of bastard ...

Fig.8.1. In the photo Filter AVU, ZyXEL microfilters, etc.

ADSL ISDN Splitter.

The manufacturer is unknown. Especially spreading will not become, I will only say that the scheme is like something reminds Fig. 6, only all some small, toy. Material, details and installation are reminded by the aforementioned ZyXEL. Accordingly, rakes with quality and reliability.

Fig.9.1. ADSL ISDN Splitter.

ADSL and Line are connected directly, without any junction, therefore, the frequency response of the signal between these connectors does not make sense.

Fig.9.2. The passage of the Line-Phone signal ..

As it can be seen to the signal attenuation begins after 100kHz.

In St. Petersburg, did not see a single shutdown connection on the lines with AVU (only test connections).

On all such lines, when connecting ADSL Over ISDN equipment, starting the problem with the RF channel AVU. There is a terrible noise in the line when talking in the RF Channel. Sometimes the call signal does not pass. Still, ISDN and AVU a little different things. ISDN - digit, avu - seem based on amplitude modulation.

Obviously, the noise from the DMT channels of the ADSL spectrum affects the modulation of the RF channel AVU. :) If I'm wrong - justify.

There is a reverse problem. If the subscriber connected via ADSL Annexa is simultaneously lived in the telephone cable and on another pair of AVU subscriber, most likely, the subscriber of the subscriber connected to the RF channel will appear in the line (sound frequency sound).)

The worse the telephone cable, low insulation resistance, less transient attenuation Between pairs, the higher the probability of the problem.

Siemens splitters - quality and reliability. It is noted to improve the operation of the Dial-UP modems when connected via Siemens splitter. (Reducing Retreins, an increase in average speed.) Lack of only one is very large dimensions and price. On poor-quality telephone lines, with some DSLAM and varieties of ADSL modems, there are insignificant RF noises (hissing) in the head of the frequency band. If the RF noise is very strong, the splitter is connected correctly and replaced the splitter / modem to another model does not help, then the cause of noise is the surround damage to the telephone cable. As an alternative to Siemens, you can use ECI-Telecom. Siemen and Eci-Telecom are officially sold anywhere. If you find, then only exam. Practice shows that their quality does not depend on time. Zyxel and D-Link splitters are very compact, it is convenient to mount them in communication shields, boxes and inside the miniatuse. On this, their advantages end. About the rest of the splitters / microfilters at all I can not say anything good. What else: there is still a deliberate problem. Namely, when connected via splitter, the Samsung NX-308, LG miniatuses, etc. After finishing incoming challenge Miniatuse does not let go of the line. It is treated with a splitter replacement (not always). It also helps the setting after splitter the discharge detector ("DETECTOR", BUSY TONE DETECTOR). http://www.npficon.ru/