Uk adsl microfilter bt socket to bt socket and rj 11 d link uk adsl microfilter for bt socket dsl 35mf this is a handy and highly convenient product for deploying adsl broadband internet in your home or office this microfilter has been made to fit into any uk standard phone socket allowing you to connect an asdl broadband modem router or modem router to it manufactured by d link you can be assured of a reliable connection with this product deployment