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Digital Subscriber Line Is A Family Of Technologies

1909 words - 8 pages

1. An introduction

Digital subscriber line (DSL) technology transforms an ordinary telephone line into a broadband communications link, much like adding express lanes to an existing highway. DSL increases data transmission rates by a factor of twenty or more by sending signals in previously unused high frequencies. DSL technology has added a new twist to the utility of twisted-pair telephone lines.

DSL is a family of technologies that provide Internet access by transmitting digital data over the wires of a local telephone network. In telecommunications marketing, the term DSL is widely understood to mean asymmetric digital subscriber line (ADSL), the most commonly installed DSL technology. DSL service is delivered simultaneously with wired telephone service on the same telephone line. This is possible because DSL uses higher frequency bands for data. On the customer premises, a DSL filter on each non-DSL outlet blocks any high frequency interference, to enable simultaneous use of the voice and DSL services.

2. The technology’s application: where, how it works and who is using it.

Where, Who is using it This Digital subscriber line DSL

DSL technology is suitable for households and small businesses, particularly in rural areas, who may have access to other types of Internet services like cable Internet, DSL is also the very appropriate to the customers who want to use the internet with a package quite economical. While DSL is slower than cable Internet, it forms the lack of speed with a much more economical than cable Internet. DSL service providers rarely have any data, so DSL is ideal for those who spend a lot of time online every day, like small businesses or home. In addition, with technology DSL this can attract people who want to save money the Internet or those who are looking for a major step up from dial-up Internet Service.

How Digital subscriber line works?

How Digital subscriber line works?

It all begins with a simple click on your web browser (Firefox, Internet Explorer and Safari). By typing a specific location, searching or clicking a link you instruct the computer to find a specific location on the internet. These signals or instructions are sent to the modem through the PC’s Ethernet card. The Ethernet cable which serves as the pathway of these signals transmits it to the modem. The modem acts as a translator between the network servers and computer. The modem transforms your computers instructions to information which could be understood by the network servers. These signals are transmitted to your network by use of telephone wires and cables. A DSL cable runs from your modem to your phone jacks. These phone jacks also serve as a port for your telephones. Filters are used in instances where there is only one available phone jack for both your DSL and phone. This serves to separate the analogue (phone) and digital (DSL) signals. Signals exit your home and run through telephone cables to the network...

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