- NetComm Modem Router User Guide

Overview
YML717 Rev1 NetComm NB5 Ethernet/USB Modem Router
www.netcomm.com.au 11
Do I need a Micro filter?
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 Modem 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 unsure.
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.
A suitable Microfilter can be purchased from NetComm or your Service Provider, if required.