DSL stands for Digital Subscriber Line. This technology allows users to connect to the internet by using their existing phone lines. While both DSL and Dial-up internet leverage existing telephone lines, DSL uses a frequency that allows calls and data to be transfered at the same time without interference allowing for users to both talk on their phone and use the internet.
DSL internet would allow service almost everywhere. The main thing to consider is to make sure that your subscription can handle your internet usage. This technology offers an average download and upload speed and the quality of the service is respected, even if there are better and faster technologies.