How does Verizon DSL work? Digital Subscriber Line (DSL) provides high-speed digital modem technology via a conventional telephone line. DSL uses signal frequencies above those used by voice or fax, so the DSL signal does not interfere with telephone conversations or faxes. When a DSL filter is connected to your phone jack, its function is to split the data (Internet) traffic from voice (phone) traffic, and route them separately. Voice traffic goes to the phone or the fax machine, while your computer traffic goes through the Verizon DSL modem and to your computer, thus allowing you to use both simultaneously.

Verzion DSL High-Speed Connection: Get a DSL dedicated connection for Verizon high-speed Internet access. Click and connect in an instant. Talk on the phone and surf at the same time. Visit Verizon Central and make the most of your broadband connection with easy access to frequently used tools and services that Verizon Online offers, like 9 e-mail accounts, personal Web space, Web site building tool, Control Pad, and DSL Live! You get all this and more just for choosing Verizon Online DSL.