If you do not use microfilters, and still want to use a phone then a replacement Master socket cover that filters the ADSL or VDSL2 signal from the extensions is needed. Filtered faceplates are a lot ...
The existing NTE5 master socket has been around for a decade and the rise of tool less connectors has made it into this arena with the news that the new NTE5C will be standard kit by the end of summer ...