Definitions for "Microfilters"
Keywords:  adsl, voice, dsl, fax, contaminated
The microfilter is used to protect the DSL signal from being contaminated by any signal noise from your voice service, allowing both voice and data to share common inside wiring.
Devices which need to be plugged into all existing telephone and extension sockets to ensure that the ADSL signal on the telephone line does not interfere with voice or fax calls.