NetComm NB3300 - Manual (Page 12)

www.netcomm.com.au Rev.1 - YML632
Page 12 ADSL Modem Router
2-3 What is a Micro filter for?
Micro filters are used to prevent common telephone equipment, such as phones, answering
machines and fax machines, from interfering with your ADSL service. If your ADSL enabled
phone line is being used with any other equipment other than your ADSL Router then you will
need to use one micro filter for each phone device.
Splitters may be installed when your ADSL line is installed or when your current phone line is
upgraded to ADSL. If your telephone line is already split you will not need to use a microfilter
- check with your ADSL service provider if you are not sure.
Each micro filter is connected in-line with your telephone or fax machine so that all signals pass
through it. Telephones and/or facsimiles in other rooms that are using the same extension will
also require microfilters. The following diagram gives an example of connecting your ADSL
Modem/Router using a Microfilter.