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wireless high speed adsl
This offers more speed then either dial-up service or telecomm DSL which travels over phone lines. Ok, free in a manner of speaking. Gone are the days when no one could get through to you if you were on the net for a couple of hours; you can use the Internet for much longer now that your phone line won't be tied up. Service at 9,000 feet distance is nearly eight times as fast as service over 18,000 feet.
local dsl internet
Five Ways to Have Fun with DSL InternetHooked on DSL internet service? All you have to do now is make sure this company offers you true high speed and that all of the equipment works right for you and your needs. Another great thing about cheap DSL is that you need very little equipment to use this service -- there is no need to buy an adaptor for your phone, a DSL modem plugs into the place you'd put a phone line. Regular DSL, the sort you'd order for home service from a provider like Yahoo, is carried from the provider to your house by the pair of copper wires that are already carrying your phone service. Setting up the speedstream dsl modem was a breeze for anyone who installed it on this type of an operating system -- when the computer was powered up for the first time after the installation, the unit automatically set itself up to connect to the ISP provider.
DSL, or 'digital subscriber line', is that handy set of technologies that allows you to browse the internet at warp speed. This technology suddenly appeared in homes around the world during the 1990s. But where did it come from, and how exactly does it work? Let's find out.
Origin
Back in the 1980s, engineers were poking around for a way to get bits of information from one computer to another via telephone lines. They figured out a way to do this using already-installed telephone lines. Joseph Lechleider, an analyst at Bellcore, and John Cioffi, who founded the Amati engineering firm, came up with the mathematical analysis and circuits that make DSL possible.
Telephone companies initially weren't thrilled with DSL, because the technology gave customers the option of using their pre-existing phone line for internet service instead of having to pay for a second phone line. Prior to broadband, modems had to dial up to a service provider, so customers typically had two separate lines; one for the phone and one for the modem.
However, as more and more media-rich content became available on the internet phone companies joined the technology train. Today, many companies, like AT&T, market their own brand of DSL service. Eventually the telephone companies realized that DSL saved them money since it didn't require digging new trenches for additional phone wiring, as would be the case when installing fiber optic cables to provide the same broadband access.
How DSL Works
For more than one hundred years, telephone lines have consisted of a pair of copper wires running from a main trunk owned by the phone company to a consumer's house. Copper is great for being able to carry a wide range of frequencies. This range is also called its "bandwidth."
The frequency range of the human voice is from 300 to 3,400 Hz. The telephone companies liked limiting the bandwidth because it allowed them to bundle many wires together at a central location without having any distortion caused by overlapping frequencies.
That leaves a lot of unused bandwidth - more than a million HZ -- on the copper wire, and that's why engineers started looking at using it for DSL in the first place.
DSL also splits the digital signals being carried by the copper wire into upstream and downstream channels. Market studies showed that internet users download more content than they upload, or send. So DSL makes the downstream channel three to four times faster than the upstream channel.