Filters & Extras

Important DSL filter information
Please make sure that a DSL filter is connected to every extension socket that has or will have a phone, fax or dial-up modem attached to it. Otherwise, you may experience connection problems. If you require additional DSL filters, please go to the ordering information page.

Installation and troubleshooting
For installation information, or if you're experiencing probems with your phone line after connecting the DSL filters, please refer to our troubleshooting guide:
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Additional DSL filters / cables
Your Broadband Easy-Install pack includes three DSL filters. If you have more than three BT phone extensions you can order more.