What is DSL Internet service?

**joseph00** · 08-27-2010 05:51 PM

Hi

DSL (digital subscriber line) technologies, often grouped under the term DSL, connect a computer to the Internet. DSL uses existing copper pair phone line wiring in conjunction with special hardware on the switch and user ends of the line. This special hardware allows for a continuous digital connection over the phone lines.

Since the connection is digital, DSL technology doesn't have a digital-to-analog conversion like traditional modems. It eludes voice audio spectrum frequency boundaries because it can use frequencies above the voice audio spectrum. This means you can use your phone while maintaining your Internet connection.

These different frequencies allow DSL to encode more data, and allow Internet connection speeds of up to 50 times faster than standard modems, and up to 12 times faster than an ISDN connection. Additionally, since DSL is not a bus technology, it offers more consistent bandwidth than cable modems in which multiple users share very high bandwidth media. However, distance limitations can affect the transmission rates or can be too great, rendering DSL infeasible. Also, the condition of your existing wiring can affect transmission rates.

The most commonly available DSL technology is ADSL, or asymmetric DSL. It is asymmetric in that it is designed to accommodate typical consumer Internet use, with much more data flowing toward the user (multimedia and text) than from the user (mostly keystrokes and mouse behavior). The downstream rate (receiving rate) varies from 1.5 to 9Mbps; the upstream rate (sending rate) varies from 16 to 640Kbps. These speeds depend greatly on the distance to the telephone company's central office.

Thanks

**jhonybush** · 08-28-2010 02:45 PM

DSL uses the same connection as your phone, but it sends data at a different frequency on the line. They won't interfere with each other as long as you use DSL filters provided by your ISP.

**warn99** · 08-28-2010 04:37 PM

Hi

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Thanks

**ocmseo** · 08-31-2010 08:18 AM

Generic name for a family of fast digital communication services such as asymmetric digital subscriber Line (ADSL), symmetrical digital subscriber line (SDSL), and very high rate digital subscriber line (VDSL). DSL services offer speeds higher than that of integrated services digital network (ISDN) but lower than that of a cable modem or a T-1 line; and, like the ordinary (analog) telephone service, typically operate on only one pair of wires.

Digital Subscriber Line is a technology that assumes digital data does not require change into analog form and back. Digital data is transmitted to your computer directly as digital data and this allows the phone company to use a much wider bandwidth for transmitting it to you. Meanwhile, if you choose, the signal can be separated so that some of the bandwidth is used to transmit an analog signal so that you can use your telephone and computer on the same line and at the same time.