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DSL-524T ADSL Router Manual
103
D
Microfilters and Splitters
Most ADSL clients will be required to install a simple device that prevents the ADSL line from
interfering with regular telephone services. These devices are commonly referred to as microfilters or
sometimes called (inaccurately) line splitters. They are easy to install and use standard telephone
connectors and cable.
Some ADSL service providers will send a telecommunications technician to modify the telephone line,
usually at the point where the telephone line enters the building. If a technician has divided or split
your telephone line into two separate lines - one for regular telephone service and the other for
ADSL – then you do not need to use any type of filter device. Follow the instructions given to you by
your ADSL service provider about where and how you should connect the Router to the ADSL line.
Microfilters
Unless you are instructed to use a “line splitter” (see below), it will be necessary to install a microfilter
(low pass filter) device for each telephone or telephone device (answering machines, Faxes etc.) that
share the line with the ADSL service. Microfilters are easy-to-install, in-line devices, which attach to
the telephone cable between the telephone and wall jack. Microfilters that install behind the wall plate
are also available. A typical in-line microfilter installation is shown in the diagram below.
Microfilter Installation
Important: Do not install the microfilter between the Router and the telephone jack. Microfilters are
only intended for use with regular telephones, Fax machines and other regular telephone devices.