Understanding Adsl Microfilters; Adsl Microfilter; Adsl Microfilter With Built-In Splitter - NETGEAR DGND3300 - RangeMax Dual Band Wireless-N DSL Gateway Wireless Router Setup Manual

Understanding ADSL Microfilters

ADSL technology uses the same wires as your telephone service. However, ADSL adds signals to
the telephone lines which create noise in the telephone service. You must use ADSL microfilters
to filter out these signals before they reach your telephone.
If you purchased the modem router in a country where a microfilter is not included,
you must acquire one.

ADSL Microfilter

Figure 6
Each device such as a telephone, fax machine, answering machine, or caller ID display requires an
ADSL microfilter.
Do not connect the modem router to the ADSL line through a microfilter unless the
microfilter is a combination microfilter/splitter specifically designed for this
purpose. Doing so will prevent block your connection to the Internet. If you have
any doubts about this, connect the modem router directly to the ADSL line.

ADSL Microfilter with Built-In Splitter

Use an ADSL microfilter with built-in splitter when there is a single wall outlet which must
provide connectivity for both the modem router and telephone equipment.
Figure 7
Installing Your Router Manually (Advanced, Mac, and Linux Users) 14