DSL Full Form – What is DSL?

DSL Full Form
DSL Full Form

DSL Full Form – What is DSL

Of the many Internet connection options you have, DSL is one of the oldest Internet technologies. It is the ancestor of the dial-up connection and is superior in almost every way. This is original high-speed internet.

DSL Full Form

DSL Full FormDigital Subscriber Line
DSL Full Form

What is DSL?

DSL is a communication medium used to transfer digital signals over standard telephone lines. Along with cable Internet, DSL is one of the most popular ways ISPs provide broadband Internet access.

When you make a telephone call using a landline, the voice signal is transmitted using frequencies as low as 0 Hz to 4 kHz. This range, called “voiceband”, uses only a small portion of the frequency range supported by copper phone lines.

Therefore, DSL uses higher frequencies to transmit digital signals, in the range of 25 kHz to 1.5 MHz. While these frequencies are higher than the highest audible frequency (20 kHz), they can still cause interference during phone conversations. Therefore, DSL filters or splitters are used to ensure that the high frequencies do not interfere with the phone calls.

What is DSL Internet Connection?

DSL stands for Digital Subscriber Line and is one of many technologies used to bring Internet connections and information to homes and businesses.

What makes DSL unique is that it uses existing telephone lines/connections with special adaptations. DSL began to become popular in the 1980s and 1990s.

In the early days of the “World Wide Web” (we’re referring to the late 1990s, 1890s), your telephone company provided “dial-up” service, which was slow and connected to your telephone line. Was tied In response to the rapidly growing demand for Internet access – and faster, better connections – DSL was developed.

Also read: What are WAN?

Who Provides DSL?

Since DSL uses telephone wires, it makes sense that the largest providers are telephone companies. BSNL is the largest telecom company in India and also the largest provider of DSL services.

How fast is DSL?

A better question might be, “How slow is that?” Very slow compared to cable connections (Comcast, Cox Communications, Time-Warner, etc.) and incredibly slow compared to fibre optic connections such as FIOS (which is not available everywhere).

The “fast speed” according to some DSL providers is only 1.5 Mbps (megabits per second). The “Lightning” speed, their top key speed, is 15 Mbps. The typical speed for a DSL connection is 6 Mbps, compared to the top speed of 100 Mbps offered by many cable companies. Midrange cable internet plans likely promise 25-50 Mbps.

How DSL Works in English

Your DSL service provider will give you a special modem that only works for DSL connections and in many cases only their specific connection (in other words it is not compatible with other ISPs). You plug your computer into the modem, and the modem plugs into a splitter to separate the voice from the Internet data as I mentioned above.

The lines will run out from your wall to the ISP hub. The lines that are used to send data back and forth are, in most cases, ADSL lines. It means Asynchronous DSL, which in English means that one side of the line (download) is larger than the other side (upload). The end result is fast downloads and moderate to slow uploads (which most people don’t care about anyway).

An important point is that the farther your connection is from the ISP hub, the worse your connection quality and speed will be. There is a limit of 18,000 feeds (3+ miles) not exceeded by service providers. So that means if you’re on the far end of the connection, you’ll have worse service than those on the other side, and if you’re out of range, you won’t be able to use DSL.

Equipment for DSL Internet

Equipment You Need for DSL Internet

You don’t need a lot of equipment for DSL internet. Most of this will be supplied by your ISP anyway.

1) DSL Modem

DSL Modem – This is a special modem for DSL internet only. The Internet provider usually supplies this, and sometimes the router itself. Keep in mind that one modem may not work with another ISP, so if you change to service, you’ll probably have to switch. It’s also worth noting that the modem is usually rented from an ISP, so it may be worth looking into buying your own.

2) Line Splitter

The line splitter plugs into your phone line and has two connections – one for your phone and one for DSL. This separates data from one connection to another, which helps speed things up.

You don’t have an existing phone service, but you will need a phone jack and wiring. If you don’t have phone service, you’ll be given a dry loop or only a DSL line, which is essentially phone access without a dial tone.

Internet service providers will usually ship a self-install kit that includes a modem, splitter, and install disc. You can install everything yourself (very easy), or pay someone to come out.

Types of DSL in English

1) Symmetric DSL

SDSL divides upstream and downstream frequencies equally, providing equal speeds for both uploading and data transfer. This connection can provide 2 Mbps upstream and downstream. It is mostly preferred by small organizations.

2) Asymmetric DSL

ADSL provides a wider frequency range for downstream transfers, providing many times faster downstream speeds. An ADSL connection can offer 20 Mbps downstream and 1.5 Mbps upstream, this is because most users download more data than they upload.

Advantages and Disadvantages to DSL Internet

1. No additional wiring – A DSL connection uses your existing telephone wiring, so you won’t have to pay for expensive upgrades to your phone system.

2. Cost-Effective – DSL Internet is a very cost-effective method and is the best in connectivity.

3. DSL is much faster than dial-up and doesn’t cost much money either. For the price, it is competitive with entry-level cable internet

4. DSL is cheap – you will get 5 to 8 Mbps for 300 to 1000 rupees.

5. You don’t have to share your internet connection with your neighbours as you do with a cable connection. So you won’t have to worry so much about “peak usage periods” and your internet won’t slow down.

DSL Disadvantages

1. The quality of your DSL service depends on the distance between you and the centre of the Internet service provider. The further away you are, the worse and/or slower the internet connection is. The ISP’s cabling range is about 18,000 feet or a little over 3 miles. Many ISPs do not provide service up to the maximum limit due to lack of quality.

2. DSL service is not available everywhere, which increases with the problem of distance.

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