Digital Subscriber Line (DSL)



DSL is a type of Broadband Internet Service that transmits data over traditional telephone lines which already exist in most homes and businesses. So DSL service is traditionally offered by telephone companies.

Therefore, DSL services is one of the most common forms of Broadband Internet due to the fact that most people already have phone lines installed in their homes. In addition, many phone companies will discount the price of the DSL if you are already a phone customer with them. Therefore, this makes DSL very affordable as well.

You can still use your phone while using DSL Broadband Internet service, so it does not affect your normal telephone use.

The following are types of DSL transmission technologies:

  • Asymmetrical Digital Subscriber Line (ADSL) ñ used primarily by residential customers, such as Internet surfers, who receive a lot of data but do not send much. ADSL typically provides faster speed in the downstream direction than the upstream direction. ADSL allows faster downstream data transmission over the same line used to provide voice service, without disrupting regular telephone calls on that line.
  • Symmetrical Digital Subscriber Line (SDSL) ñ used typically by businesses for services such as video conferencing. Downstream and upstream traffic speeds are equal. Faster forms of SDSL, typically available to businesses, include High-data-rate Digital Subscriber Line (HDSL) and Very High-data-rate Digital Subscriber Line (VDSL).
To find out what type of DSL plans may be offered in your area, contact your local phone company. If you simple surf the web and use email, you will most likely want to use their least expensive, slowest plan as even the slowest broadband connection is sufficient for things such as web surfing and email. However, if you download large amounts of data, you may want to consider opting for a higher priced, faster connection.