what's ADSL?is it an abbreviation?

Answer 1

Asymmetric Digital Subscriber Line (ADSL) is a form of DSL, a data communications technology that enables faster data transmission over copper telephone lines than a conventional modem can provide. It does this by utilizing frequencies that are normally not used by a voice telephone call, in particular, frequencies higher than normal human hearing. This signal will not travel very far over normal telephone cables, so ADSL can only be used over short distances, typically less than 5 km. Once the signal reaches the telephone company's local office, the ADSL signal is stripped off and immediately routed onto a conventional internet network, while any voice-frequency signal is switched into the conventional phone network. This allows a single telephone connection to be used for both ADSL and voice calls at the same time.-

Answer 2

Assymetric Digital Subscriber Line
The other type of DSL is SDSL (Synchonous Digitial subscriber line).

Assemetric means the Upload and Download speed will be different (ie 1.5 Mb Down and 384Kb up) which is how it always is. The SDSL is usually very expensive. If you have 1.5Mb down then you get 1.5Mb up. This is the equivalent to a full T1 line, which is why SDSL is expensive. But of course either or comes in different speeds/flavors. Like you could have a 512 Kbps Up/Down on SDSL which wouldn't be outrageously priced. ADSL is the crap you get from your local telephone company, or sbc.yahoo.com , etc. But the price is right and affordable.

Answer 3

ADSL (Asymmetric Digital Subscriber Line):

Commonly called DSL. Technology and equipment that allow high-speed communication across normal twisted pair copper wiring. This can include video signals. ADSL can transmit at high rates of speed both upstream and downstream, depending on line distance.

Answer 4

Asymmetric Digital Subscriber Line

Most DSL lines are Asymmetric. It just means that the upload speed is different than the download speed. Since most people download much more than upload this makes a lot of sense.

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