An ADSL Micro filter of the double adapter type plugs directly into a BT type wall socket and provides two outputs. One is filtered for connection of telephony equipment such as telephones, answer machines, fax machines etc. The second one is straight through for connection of ADSL modems and routers.
This microfilter simply plugs into a phone socket and protects telephones, fax machines, answering machines and other telephony equipment from interference from data on ADSL lines. For use with an ADSL service from btand other internet service providers.