ADSL Splitter For DSL connections improve voice quality

From the article:

ADSL technology offers the convenience of simultaneous use of phone and Internet surfing at very high speeds. Often, the users encounter an annoying disturbance on phones connected in parallel because of the high frequency of ADSL signal. This splitter filters out ADSL’s high frequency signal and allows disturbance free use of cordless phones, fax machines and phone instruments on parallel lines at homes and offices.

I've not noticed any such disturbances, but nevertheless perhaps some of you have :)
-K