* ADSL Microfilter for self-install
* Required for all non-ADSL devices (e.g. telephone fax) when the customer
does not get a splitter installed.
* One filter is needed for every item of non-ADSL equipment such as phones
fax caller display unit modem Sky digital decoder or set-top box
with integral modem
* Up to 5 filters can be used on a single telephone line