Digital subscriber line (DSL) modems share lines in your house with phones, fax machines, answering machines and other devices. Information sent by one device sometimes interferes with your DSL Internet connection. This is why DSL modems often come with filters, which you install on phone jacks with anything besides a DSL modem plugged into them. If you notice your DSL connection getting worse or cutting out altogether, one of your filters may not be working properly. Here’s how to test whether your DSL filters are working: Writer Bio
