How to connect the splitter:
http://www.calcutta.bsnl.co.in/dataonei ... drg12.html



ADSL splitter:
It gives an easy path to Phone audio frequencies, and
blocks the BB data signal which is of higher frequencies..

An ADSL filter is normally a small plastic box with a short lead that plugs
into your phone socket and two outputs, one for your ADSL Modem and
another for a telephone. ....

ADSL filter select the band of frequencies for each of the outputs,
phone or ADSL, and send just the correct band to the appropriate
socket.
The phone output gets only telephone frequencies (from DC to 3.4 kHz)
and the ADSL output gets the higher frequencies well (above 25 kHz)...
ref: http://www.epanorama.net/documents/tele ... ilter.html

2.
Sometimes you will find BB internet is working and Not phone,
and visa versa. "Hissing "noise in the phone earpiece,means
ADSL splitter is faulty,or RJ11 cables wrongly connected to filter.

3. Inside the splitter :
Two coils and three condensers for telephone.
Rj11 to modem goes direct( to phone junction )
see attachment

4.
.Phone splitter: