How does ADSL Broadband Work
There are basically two categories of broadband connection in the UK - ADSL and Cable
ADSL broadband is the most common service offered to broadband customers in the UK.
ADSL which means asymmetric digital subscriber line is broadband which you get through your existing telephone line. It works using the frequencies found through a standard telephone line made for calls. Download speeds for ADSL are usually much faster than upload speeds which is what the term "asymmetric" refers to. The download and upload speeds you can expect through a ADSL line are lower than cable however ADSL is suitable for many people based on their requirements.
ADSL download speeds from providers generally start at 0.5Mb/s and as of writing can reach speeds of up to 22Mb/s in the fastest packages. Even at the slowest speed, ADSL provides a connection that is more than 10 times faster than that of a modem, and also more reliable. This is more than sufficient for what the majority customers will require from the Internet.
You will usually require a BT telephone line to use ADSL broadband and there are many telecom providers who offer different deals.