DSL Vs. Cable Modem Connections

DSL and Cable internet modems both allow users to connect to the internet via high speed internet connections. However there are a few key differences between the two services and the way that they connect. These differences include speed and connection type. This article gives a general overview of some key differences between using a DSL modem and a cable modem.

Connections:

DSL modems connect to central hubs usually owned and operated by a DSL service provider or the local phone company. Digital signals are transferred back and forth between the modem and the central hub. One advantage of DSL over old dial up technology is that you don't have to tie up your phone line while browsing the web.

Cable modems connect to a cable line run to your home or office by the local cable company. Data is transferred over cable lines, often the same connection that your cable TV travels over.

Both types are considered external modems that connect first to the phone line or cable line and then connect to a router or your computer's Ethernet connection.

Speed:

This is where cable modems beat out DSL usually. Cable modems connect to networks that are capable of delivering data transfer speeds of over 50 megabytes per second. Most DSL circa 2009 is still limited to around 10 megabytes per second.

Cost:

While cable usually beats DSL for speed, DSL usually wins out on pricing. This may be due to the slower browsing speeds found over DSL, or due to limitations of DSL. However cable internet providers tempt those looking for high speed internet by offering teaser promotional rates often the same price of DSL. Some DSL goes for as low as 20 dollars a month. Cable can start at 40 or more a month depending on the amount of bandwidth speeds you sign up to access.

Limitations:

DSL is limited by distance. As the distance between DSL hub and computer increases, the connection speed decreases. Cable is not limited by distance, however cable companies may charge you extra to run a cable line to your home if you are far from other cable users.

Cable also has the limitation of being a "shared" service. Your neighbors and even your whole block could be essentially using the same single connection to the cable company's nearest hub. While casual users may not notice a difference, during periods of heavy usage speed can decrease and connection failures can occur.

Competition:

Both types of services and their related modems face competition from services that offer fiber optic DSL and cable internet connections. They also face competition from satellite internet, wireless broadband internet, and yes even dial up internet.

Choosing between DSL modem and cable modems begins with choosing between which service you want. Speed and pricing are the main considerations of this decision but availability and other connection options should also be considered.