Connecting the DSL filter
Check if you need to install or replace a phone line DSL filter with the Verizon Troubleshooter.
Installing filters on your phone devices is Step 1 of the Verizon High Speed Internet installation process. You need to install filters on all phone devices using a telephone line before installing your modem.You'll install your modem in Step 2 of the installation process.
Filter installation on standard telephones