Home Phone setup and correctly filtering your hardware

If you’re plugging in a telephony device into a socket without a modem, skip steps 1 and 2.

  1. Take one end of a phone cable and plug it into your modem’s ADSL socket. 
    ADSL port
  2. Plug the other end of the phone cable into the port labelled ADSL on your line filter. 
    Line filter ADSL port
  3. Using another phone cable, plug one end into the appropriate socket on your telephony device (please consult the device’s manual if you’re not sure which socket this is).
  4. Plug the other end of the phone cable into the port labelled PHONE on your line filter. 
    Line filter PHONE port
  5. Plug the filter into your wall socket to finish. 
    Phone wall socket


Appendix - More information

Which devices need to be filtered?

  • A modem that’s sharing a wall socket with any of the devices listed below
  • All telephony devices including telephones and fax machines
  • Foxtel Digital units (these are plugged into a coaxial socket AND a telephony socket)
  • EFTPOS machines

Modems that aren’t sharing the same wall socket with another telephony device should not be filtered. Simply connect the ADSL port straight into the wall socket using an RJ-11 phone cable.

If your home has the older 600-series wall sockets (typical plug is a yellow square with 3 prongs), you’ll need to purchase an adapter that allows you to plug in a modern RJ11 phone cable. These adapters can be bought at all good electronics and computer stores.

  • If you have more than three telephony devices or a Monitored/Back to Base Alarm system, you’ll need a central splitter.
  • Please contact an licensed cabler who is registered with an ACMA-accredited registrar about installing a central splitter. This is an electrician who is properly licensed to work on telecommunications cables.
  • Without a central splitter, it is likely that you will suffer phone and/or internet dropouts caused by interference between your modem and telephony devices.

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