Do you find yourself getting confused by all of the DSL lingo when researching DSL high speed internet? A brief explanation of DSL — or Digital Subscriber Lines — and all of the related technologies should clear things up as you seek to make decisions regarding internet providers. For home internet usage and small business, Asymmetric DSL is probably adequate because it allows for higher download than upload capabilities. It also doesn’t interfere with your telephone service. Businesses which require symmetric two-way data flow should look into SDSL or HDSL depending upon their needs. A separate line is required for these technologies.