Also be connected to the phone line through an ADSL microfilter. One filter is required per. BT-830 ADSL Phone filter should be used on the end of every extension coming from the master. BT Plug to BT Socket.
ASNQ ADSL Filter - Microfilter for Phone/Broadband BT Plug to RJ11 Connector -
ADSL FILTER MICROFILTER SPLITTER BT UK INTERNET BROADBAND
ADSL Broadband Microfilter BT Plug to RJ11 Internet Phone Splitter Modem Fax
ADSL/ADSL2+ Microfilter Internet Broadband Micro Filter Splitter With Cable Lead
