Microfilters And Splitters - D-Link DSL-G604T User Manual

DSL-G604T Wireless ADSL Router User's Guide
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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 filter it will be necessary to install a microfilter (low pass filter) device for
each telephone or telephone device (answering machines, Faxes etc.) that shares 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.
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