DSL Filters, also known as micro-filters, are small in-line devices that are sometimes required in DSL installations. DSL filters prevent noise interference that usually occurs between the telephone wiring and modem when the equipment lines share the same line as the DSL service. Discount Computer Parts Center's DSL Filters aids you in preventing noise from the DSL connection when you are talking on the telephone and at the same time, makes sure that you get optimal services from your modems.