How many microfilters do I need?
A microfilter is needed for each socket in use on the phone number activated for Broadband. As an example if you have three sockets in your house, one in the study where your PC and phone are, one in the bedroom for a phone and a third in the lounge unused. You would need two filters, one for the study for the Broadband connection and the phone and another for the phone in the bedroom.