You will need a line filter on every jackpoint in your house that has a phone or fax plugged into it to filter out loud static noises caused by broadband. You won't need a filter on your modem - for best results - simply connect it to a jackpoint. This also applies if you have Naked Broadband - which has no voice services so requires no filter.

• Note: ADSL/VDSL is no longer sold by One NZ as of 1 October 2025.