VDSL is the abbreviated term for “Very high bit-rate Digital Line Subscriber.” It is considered to be the next level of DSL technology, because it is much faster and capable of sending greater amounts of information. It can download data to your computer at a rate of 52 megabits per second (or Mbps) and upload data from the computer to the Internet at a rate of 12 Mbps.
VDSL taps two different technologies: QAM (which stands for “Quadrature amplitude modulation)” or DMT (which stands for “Discrete multitone modulation”). These technologies are unfortunately incompatible, so it must use one or the other. OF the two, DMT is the more common industry standard.
VDSL has paved the way for people to enjoy home entertainment at new levels. It has made it possible for users to experience HDTV as well as Video On Demand. However, it is quite expensive, limiting users to only the most affluent (or the most avid techies and audiophiles). However, manufacturers believe that once the demand increases, and the technology becomes more refined, the prices will become less intimidating.
Many people believe, though, that VDSL is a good investment simply because of the power and speed it offers. It allows them to use internet with other VDSL services without any danger of lower speed. That’s because it uses multiple channels—in fact, about 247 virtual channels within the given bandwidth. It also monitors the quality and speed by which data is sent through a particular channel, switching it to another “path” when the signals are compromised.