DSL Disdvantages
Despite its attractiveness, DSL has some limitations.DSL efficiency is related to distance. The farther you are away from the provider, the more unreliable the service becomes.

People who need to upload large amounts of data such as corporate database, video, large audio files and images will not find DSL attractive though it is fast.

DSL is limited to a certain perimeter. People very far away from the provider may not be able to get the service. Service may be constrained to about 18,000 feet radius of the provider. Thus, availability is determined by distance from the providing source.

There is no standardization. Each company comes with its own equipment. So if you leave one city to go to the other, you may have to purchase a new set of equipment from the new company.

Additionally, DSL operates on traditional copper telephone lines, and is incompatible with fibber optic lines.

Downloads are faster than uploads; making it unsuitable for businesses and individuals who need to send heavy data of multimedia origin across the net. People who do constant upload of heavy files through email attachments or ftp transfers will experience difficulties with DSL.

If traffic on the phone line is heavy, you may experience stalling with your internet connectivity. The reason why this happens is that, the DSL technology is using spare lines form the telephone channel to deliver its data. So the telephone signals have some form of priority over the DSL when it comes to data transmission. Although these instances are rare, it is a theoretical possibility that a heavy usage of the phone may witness a drop in DSL data access.