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There is a third choice: you could share your DSL connection using the ICS or the internet connection sharing. Cheap DSL Doesn't Mean Less QualityThe word cheap is often associated with inferior quality, so you might think with cheap DSL you get less service. We'll look at why this is and what secondary factors matter, below. Phone line - the quality of the phone line is a major factor in achieving the optimal speed; copper wire seems to be the most efficient in this aspect. The other types of DSL peter out around 18,000 feet.
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Some hotels, primarily business-oriented ones, will let you just plug your laptop into an Ethernet port. If a client needs to connect more then one computer to DSL, they'll need to use a router that establishes the connection between DSL modem and a local Ethernet, Home Plug or Wi-Fi network on the business's premises. Well, these games are one of the reasons to upgrade to high speed DSL. Many broadband internet service providers also give you access to a web email account. The signal dissolves into a bunch of unintelligible static.
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.