Wednesday, 8 December 2010

Broadband - ADSL (Asymmetric Digital Subscriber Line) cable

The broadband ADSL, also known as (Asymmetric Digital Subscriber Line). Unlike the conventional means of a dial-up, which works on the same frequencies as a telephone line a ADSL uses a splitter through a normal telephone wire but works using separate unused frequencies allowing both internet and phone calls to be received simultaneously. The broadband ADSL, also known as (Asymmetric Digital Subscriber Line). Unlike the conventional means of a dial-up, which works on the same frequencies as a telephone line a ADSL uses a splitter through a normal telephone wire but works using separate simultaneously.


















By looking at this bar chart, the usage of the download and upload frequencies can be noticed, compared to the common phone usage there is quite a dramatic difference.

Over the years, the downstream speed has increased. Since the very first ADSL protocol - which could tolerate speeds of up to 8.0 Mbit/s, speeds have doubled, and nearly tripping now ranging from 12 to 24 Mbit/s. Although ADSL is a perfect means of communication the new arrival of fibre optics may wipe this protocol out with speed far exceeding 40 Mbit/s.

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