Digital Subscriber Line

Digital Subscriber Line

Digital Subscriber Line technology offers high-speed internet service for homes and businesses. It competes with cable and other forms of broadband internet. The technology behind DSL means your network and telephone service share the same phone line without disrupting either your voice or network connections.

DSL Speed

Basic DSL supports maximum download data rates ranging between 1.544 Mbps and 8.448 Mbps. Actual speeds vary in practice depending on the quality of the copper phone line installation involved and the length of the phone line needed to reach the service provider's premise equipment (sometimes generically called the central office).

Residential DSL Service

Well-known DSL providers in the United States include AT&T (U-Verse), Verizon, and Frontier Communications. Many smaller regional providers also offer DSL. Customers who subscribe to a DSL service plan pay a monthly or yearly subscription and must agree to the provider's terms of service. Most providers supply compatible DSL modem hardware to their customers if needed, although the hardware is generally available through retailers.

Problems with DSL

  1. DSL service only works over a limited physical distance and remains unavailable in many areas where the local telephone infrastructure does not support DSL technology.
  2. Although DSL has been a mainstream type of internet service for many years, the experience of individual customers can vary greatly depending on the location, provider, quality of telephone wiring in their residence, and other technical factors.
  3. As with other forms of internet service, the cost of DSL varies from region to region. An area with few providers may be more costly because of the lack of competition.
  4. DSL does not perform nearly as fast as fiber internet connections. Some high-speed wireless options offer competitive speeds.
  5. Because DSL lines use the same copper wire as wired telephone service, all wired phones in the home or business must use special filters that connect between the phone and the wall jack. If these filters aren't used, the DSL connection may be adversely affected.

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