Definition 1. - A method for moving data over regular phone lines. A DSL circuit is much faster than a regular phone connection, and the wires coming into the subscriber’s premises are the same (copper) wires used for regular phone service. A commonly discussed configuration of DSL allows downloads at speeds of up to 1.5 megabits per second. This arrangement is called an ADSL: Asymmetric Digital Subscriber Line.

Definition 2. - This is technology that uses ordinary copper telephone lines to provide Internet speeds ranging from 1.5 to 9 Mbps--speeds that are 30 to 50 times faster than a regular 56-kbps dial-up modem. DSL also allows users to receive voice and data simultaneously, since the signal is carried on a higher frequency than normal telephone communications. xDSL refers to all types of Digital Subscriber Lines, including: ADSL: Asymmetric Digital Subscriber Lines SDSL: single-line digital subscriber lines HDSL: high-data-rate digital subscriber lines VDSL: very-high-data-rate digital subscriber lines.

Definition 3. - Technology that dramatically increases the digital capacity of ordinary telephone lines. The distance from the customer to the telco central office determines DSL speeds. Asymmetric DSL (ADSL) is for Internet access, where fast downstream is required, but slow upstream is acceptable. Symmetric DSL (SDSL) is best for connections that need high speed in both directions. DSL provides "always-on" operation. At the Central Office, DSL traffic is aggregated in a unit called the DSL Access Multiplexor (DSLAM) and forwarded to the appropriate ISP or data network. DSL can compete with cable modems in bringing multimedia and 3-D to homes and small businesses.

Definition 4. - Short for Digital Subscriber Line, DSL technologies use sophisticated modulation schemes to send data over the copper wire used for your phone connection and is considered high speed or broadband Internet access.

DSL Alaska, - Ever since we were young, most of us have been taught that by cutting out the middle man we can save money, but is that all you save? When it comes to internet access and phone service working with the incumbents or Baby Bells is a mixed bag. Certainly there are competitive companies that can give you the same or better phone service than the Baby Bells which suffer from years of a monopolistic market but is it the same for internet service?

In actuality, DSL service is actually quite different than phone service. Besides the obvious difference of one being data and one being voice, competitive carriers generally use their own equipment which is kept at the phone company's facilities. In this case, asking your phone company to make changes to your service is dependant on your phone company and depending on how smoothly they run their operations you could have a very pleasant experience. Internet service, however is different. Many baby bells resell their service which is then sold under a different name. You may be buying internet access and not realize that you're really buying Sprint DSL under another name.

In cases where companies purchase Sprint DSL and resell it under their own name, many of the advantages of changing carriers disappear. If the carrier does not own their equipment they will need to contact the provider to make any changes and as they are not the provider you have added another layer of complexity to any request you may have. Is it really worth the $5 or $10 you're saving by going with a competitor? Often times it's not. Think about cutting out the middle man when looking for internet service. If you know the company is simply reselling Sprint DSL, why not just go with the source?