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.

With Verizon DSL … Does Verizon DSL require installing an additional phone line? No. You will not need an additional phone line. DSL technology allows simultaneous analog (voice or fax) and DSL (data) transmission over the same telephone line. You still use your phone as you do now. Verizon DSL is so easy to use!

Some DSL services talk a lot of big talk, and wave a lot of empty promises at you. Verizon DSL is not like that. With Verizon you get a whole new perspective on the way that Internet services should be; in short, Verizon delivers everything it promises - it's faster, it's more reliable, it's just plain better. In a word, it's called Verizon DSL.