The ADSL splitter is an electric combi filter designed to separate channels. The word split is translated from English as "split." The device is used in telecommunications. In order to connect to the Network via the ADSL line, you must use a splitter. It separates the 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 ensures the smooth operation of devices that are connected to a telephone line. Splitters are equipped with special protection against overvoltage and current arising in cables during a thunderstorm. The device is small in size, similar to a rectangular box with three connectors "Line", "Phone", "ADSL". Thanks to him, the modem and the phone can work without interruptions on the same line and not depend on each other.
Sometimes, instead of this device, a microfilter is used, which is installed at the connection point of the telephone. Often used circuits in which microfilters are connected simultaneously with splitters. The ADSL splitter can be of two types: Annex A and Annex B. ADSL technology is translated and deciphered as an "asymmetric digital subscriber line", it is high-speed.
Specifications
The ADSL D-Link DSL 30CF splitter is used to separate the frequencies of the equipment from the voice signal. This model of the splitter is installed at the input of the phone, which avoids the influence of signals from the modem and the device, to ensure smooth operation. This splitter has the following specifications and description:
- necessary for the transmission of information and voice over one telephone line without interruption;
- 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 Annex A network standard
- device dimensions - 13x10x2.8 cm.
Connecting a splitter is quite simple, the main thing is observing the sequence.
Destination
The ADSL D-Link splitter is used to connect several telephones located in different rooms to the line. Filters have many security features, and they are designed to function in different systems. They filter out the high-frequency signal at frequencies of 20 and 50 kHz. Using ADSL technology, bandwidth is allocated asymmetrically with priority for incoming traffic.
Signal transmission occurs at different frequencies, so no interference or noise is noted on the telephone line. The technology was widely adopted during the development of the high-speed Internet. In addition, data is transmitted at high speed, and material costs for the user are always minimal. In order to use the technology, the subscriber must have an analog telephone line with two wiring and a corresponding modem. The signals are transmitted at different frequencies, so the splitter performs the function of separating them and reducing interference.
Advantages and disadvantages
The ADSL modem splitter has three connectors: one for input and two outputs. A telephone line is connected to the input, and a cable from ADSL and a telephone are connected to the outputs. It is impossible to confuse them during the connection, otherwise the modem will not be connected to the provider. In order to protect the connection and the splitter, inductors are used in it. In expensive appliances, manufacturers install gas discharge fuses.
The advantages of ADSL technology include ease of deployment, low cost, high reliability. If the connection breaks, it is restored automatically. The disadvantages include the dependence on the quality of the cable. For such a connection, it is best to use shielded wires. ADSL devices have a speed limit of up to 24 megabits, low speed for outgoing traffic. In addition, the modem needs to be configured for a specific provider.
Options
The ADSL Annex A splitter operates according to a standard that transmits information at high speed along with analog phones. Operating on this line, it uses channels from the sixth to the thirty-first for data transmission, and from the thirty-eighth to two hundred and fifty-fifth for their reception. Such a splitter works according to the G.lite protocol. Annex B standard transmits high-speed data with ISDN telephony. The device uses channels for transmitting data from the thirty-third to fifty-seventh, and for receiving from sixty-third to two hundred and fifty-fifth.
The splitter has the specification of the ADSL local area network, the load capacitance on the telephone output, the maximum operating current and pulse, a certain response time for voltage and current protection, the triggering voltage of the arrester, and the passage resistance. All these parameters are indicated in the instructions. Splitters are usually installed in rooms that are as much as possible protected from direct sunlight and high humidity. The device weighs no more than forty grams.
Features
How does the ADSL splitter work? This is a passive network element. It divides the light signal from one to several ports between the subscriber and stationary equipment. Such devices are also called optical dividers. Splitters are very compact, inexpensive, independently separate modes in different directions, have low insertion loss and high in the opposite. According to the wavelength parameters, they are single-window, two-window, three-window, and broadband.
There are several splitter connection schemes. The most common is standard. A connecting cable is used for it. The device connects to a telephone line, and then the device - a modem and a telephone. When cascading, you need to connect several phones to the network in parallel with the modem. This scheme is suitable for internal connection and is divided into two more ways: connection using two splitters and using a filter and splitter.
If you need to connect a work office to the Internet, it is better to turn to professionals for help. They will pick up special equipment, configure it. In this case, a splitter and a set of filters are often used. For a home connection, you only need a device and a telephone line. For all models in the kit, detailed instructions for creating a network are attached.
How to connect
Can I configure an ADSL splitter myself? Connecting this appliance at home is not a big deal, as is setting up.
- A telephone line must be connected to the input jack. If the phone has branches or taps, then it must be connected through a microfilter, otherwise the modem will work incorrectly and slowly.
- Connect the ADSL modem to the Modem connector. In different models of splitters, it is referred to as Line-out, ADSL, NT.
- Then connect the phone, modem, fax, PBX to the Phone connector.
The splitter and modem are connected at different distances from each other. Experts advise using high-quality wires as telephone, but not power.