This ADSL splitter/filter provides an RJ-12 socket for connection to your standard telephone line and two RJ-12 outlets. The line outlet is filtered, removing any interference from the high speed connection adjacent. This line is for your fax machine, fax/modem, answering machine, cordless phone or alarm dialler etc. The other socket is for the ADSL Modem/Router. This device meets the AS/ACIF S002:2001 specification (including the latest amendment). Note: this device will not work in NZ.