DSL Should Be the Standard for Telephone Lines There is a new technology being developed that would make standard phone lines digital instead of analog. This technology is called DSL, or digital subscriber line. Because of DSL's great superiority over our standard analog lines, all of the US's phone lines should be upgraded to DSL. One of DSL's advantages would be line sharing. Because of DSL's digital format, the data being passed over the lines can be easily compressed allowing for more bandwidth, which is the amount of data that can be passed over the line. With more bandwidth, more devices would be able to use the line at the same time.