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What is DSL?

Posted On 2007-07-26 by FortyPoundHead
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Tags: General Networking Tutorial 
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DSL stands for Digital Subscriber Line. It is a service that makes the use of existing copper telephone wires for delivering data services at extremely fast speed rates. It does not hamper the existing telephone line. You can surf the Internet and talk on the phone, simultaneously.

DSL offers speeds that are around 5 to 25 times higher than a typical 56Kb dial-up connection. It is an always-on type of connection. This implies that websites would load quickly, downloads would be faster, buffering of videos would be fast and smooth and the domain of Online games would be illimitable.

Based on the types of service, DSL can be can be categorized in three divisions which are ASDL, IDSL and SDSL.

ADSL stands for Asymmetric Digital Subscriber Line. It offers download speed of 1.5 Mbps and upload speed of 384 K. In order to acquire a ADSL connection, your location has to be within 3 miles of your local telephone office. Also, a DSL router is needed for this type of connection.

IDSL is a ISDN Digital Subscriber Line service which requires an ISDN router. It provides a connection speed of 144 K. in this type of connection distance is not a component to be considered.

SDSL means Symmetric Digital Subscriber Line. The speeds available under this type of DSL connection depends on the distance between your location and your local telephone office. The speed of downloads and uploads can go up to 1.1 Mbps.

Advantages of DSL

No installation of new wires is required. DSL uses the present telephone line to connect to the Internet. It provides extremely fast connection. Depending on the offer, you would not even have to pay for the DSL modem installation charges, since it is provided free by some of the companies on selection of the appropriate plan. The download rate is much higher in DSL connections. Many business organizations have gained the benefits of DSL. A DSL connection is very secure.

Disadvantages of DSL

The quality of your DSL connection depends on the distance between the DSL providers office and your location. Nearer you are, the better quality connection would you get. So, consumers located far from the local DSL office may face some trouble. DSL provide high speeds for downloading stuff but upload speeds are not that good.

DSL vs Cable Modems

The services provided through a cable modem can sometimes slow down or get hanged. It depends on the number of users accessing that particular service. But, in a DSL connection there is no such problem. The speed of DSL is consistent and high. This does not allow any kind of conjunction on the network. It provides more security than the cable modem connections. The popularity of DSL has risen to new heights which has resulted in disconnections and up gradations of the cable modem connections.


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