Why are download and upload speeds different?
ADSL splits the wire into two so it can carry data (when you download from or upload to the web) and voice (when you are on the phone). The “asymmetric” part means that you can download from the web much faster than you can upload to it. Most domestic and small business users have needed to download from the internet more than they upload, so this is why greater capacity has been given to download. However the need to upload greater amounts of data has become much more important in recent years with the advent of social media and file sharing websites. As such there is a need for fast upload as well as download rates which is something that superfast broadband promises to deliver!