I'm using my ADSL splitter for more than 5 years now.Recently I found out that Voice line is not working but Data line is working.When I was checking my ADSL splitter I found out that inductor on the voice side is blown out.Actually there are two filters in theboth side to pass only respective frequencies.
Blown out inductor :
When I searched the internet,I found out that these splitters usually have inductor around 330uH or so for the Low Pass Filter(LPF).So,I gave a try by replacing the blown out inductor with a 100uH inductor,which I had on my component store.TaDaaaa!!! It worked well,if not I could have to buy another splitter ;) ;)
This is Dilshan's post on splitters,Really nice,
Replaced with :