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What is Digital Subscriber Line (DSL)

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What is Digital Subscriber Line (DSL)?

Digital Subscriber Line (DSL) is one of the several systems used to carry Internet access and information into homes and businesses. DSL is distinguished by the fact that it makes use of existing telephone lines/connections with certain modifications.

Our telephone provider offered “dial-up” service in the early days of the “World Wide Web” (the 1990s, not the 1890s), which was unreliable and tied up the phone line. DSL was created in response to the rapidly increasing demand for Internet access-and quicker, stronger connections.

How does it work?

DSL brings a link into our home via telephone lines, allowing our family to use the Internet while still making phone calls. Since the DSL system divides telephone signals into three bands of frequencies, it works. The lowest band allows for phone calls, while the other two bands handle internet activity such as uploading and downloading.

For their Internet subscribers, cable providers have a cable modem. A DSL transceiver is a similar piece of hardware offered by DSL providers.

Who provides it?

Since DSL is delivered over telephone lines, it’s only natural that the largest providers are telephone companies. AT&T is the world’s largest telecommunications firm and the largest DSL service provider. DSL is also widely available from Verizon and Century Link.

In 2016, how famous or common is it?

Since the companies that offer DSL are largely phasing it out and transitioning to the next generation of Internet technology: fiber optics, DSL isn’t as common as it was 20 years ago. Furthermore, cable providers, which are widespread, may normally offer a much quicker Internet connection than DSL.

How fast is it?

“How slow is it?” could be a better query.

Their maximum speed is 15 Mbps, which they call “lightning.” DSL connections typically have a limit of 6 Mbps, compared to the 100 Mbps peak speeds provided by many cable providers. The midrange cable Internet package is likely to provide 25-50 Mbps download speeds.


Yes, it is improving day by day. To begin with, today’s DSL is most likely ADSL, which was an advancement over the original technology. But there’s more: ADSL+2, which is defined as “an enhancement of ADSL broadband technology” and dramatically increases download speeds.

But don’t get your hopes up: We’ll almost certainly need to live in a big city or densely populated area to locate ADSL2+, and we’ll need to be close to the phone company’s “central office” to use it properly.

Is it in decline?

Yes, indeed. People will not accept DSL in any form if they have an option, have done their homework, and want a faster link. It’s all about pace these days, and dial-up is on its way out.

In reality, according to new studies, DSL providers would prefer to phase out DSL in favor of fiber optics, the most recent technology. The Federal Communications Commission would not like the concept of big corporations abandoning consumers or pressuring them to turn to better-and more expensive-services, even though the product is significantly better.

What are the benefits of using DSL?

In most cases, DSL would be preferred only if the only other choice was old-fashioned, low-cost dial-up service, which is still available in many areas. DSL has many benefits over dial-up:

  1. We can use the Internet and make phone calls at the same time.
  2. It is better than dial-up Internet.
  3. We have a variety of price plans to choose from, depending on the pace we need or are able to accept.

Although this appears to be a positive start, there are a few drawbacks:

  1. Data transmission would not perform as well or as quickly as data reception.
  2. The farther we are from the telephone company’s central office, the slower our service might be.
  3. It’s possible that we’re too far away to be given DSL.

If we had the choice.

  1. It’s difficult to believe that most individuals and families would accept slow Internet service if a faster connectivity alternative was available. In the other hand, most people simply do what they’ve always done.
  2. Do check if the DSL cable provider is near our house so as to get a good speed. If it is very far from the house then speed might get affected.
  3. If we’re currently with a cable provider and don’t like their rates, we may want to consider switching to DSL to save money… However, we’d have to accept DSL’s limitations.
  4. We should still wait for the new and greatest technologies, such as fiber optics, to arrive. And, after we’ve had the experience, we’re unlikely to accept anything less at any cost.

There are nearly 8 billion people on the planet today, and 4 billion of them use the internet, which includes both households and companies.

Though personal internet use accounts for a large portion of this period, business internet use is just as demanding. In the twenty-first century, internet-related companies have dominated wealth growth, with the Digital Economy valued at $3 trillion. Tasks involving the internet have become the lifeblood of modern industry.

Keep in mind that before we can perform any internet-related activities, we must first decide the type of internet connection we need. Although there are a few options, we’ll concentrate on DSL vs. cable connections because many small businesses are confused about the differences.

The Difference Between DSL and Cable Internet.

DSL (digital subscriber line) is one of the oldest internet technologies and the precursor to dial-up. It transfers data and connects us to the internet solely via our local phone line. Asymmetric and symmetric DSL connections are the two main types of DSL connections. Asymmetric provides higher download speeds and lower upload speeds, while symmetric offers similar upload and download speeds.

Unlike cable, DSL offers a dedicated, continuous link to our company, which means the connection is not shared with any potential neighbour’s.

Furthermore, DSL is an internet connection that is always accessible.

In terms of configuration, our internet provider will usually decide the appropriate equipment based on our subscription and deliver it to us. The majority of cases will use the following given scenarios.

  • A DSL modem is in charge of connecting our PC to the telephone line that contains the DSL service.
  • A line splitter, which has two connections, one for DSL and the other for the phone line, which transmits data from our modem and delivers it to our device

Cable internet vs DSL differs significantly because it uses existing coaxial cables to carry cable to our office rather than telephone lines.

Our internet provider, just as with DSL, can provide us with the appropriate equipment, such as a cable modem vs DSL modem.

The modem connects to a coaxial cable inside our office, converting the signal into data that our devices will send and receive.

Furthermore, cable internet operates on a shared network, which may result in poor performance and lag time during high internet traffic periods; this is a significant difference between DSL and cable.

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