When you connect to the Internet, you might connect through a regular modem, through a local-area network connection in your office, through a cable modem or through a digital subscriber line (DSL) connection. DSL is a very high-speed connection that uses the same wires as a regular telephone line.


Here are some advantages of DSL:

  • You can leave your Internet connection open and still use the phone line for voice calls.
  • The speed is much higher than a regular modem (1.5 Mbps vs. 56 Kbps)
  • DSL doesn't necessarily require new wiring; it can use the phone line you already have.
  • The company that offers DSL will usually provide the modem as part of the installation.
But there are disadvantages:
  • A DSL connection works better when you are closer to the provider's central office.
  • The connection is faster for receiving data than it is for sending data over the Internet.
  • The service is not available everywhere.
In this article, we explain how a DSL connection manages to squeeze more information through a standard phone line -- and lets you make regular telephone calls even when you're online!