This has been repeated hell lot of times...........request to upload it in important links -
If you are not using parallel lines -
U only need to attach the splitter on the line from where u want the DSL connection. Take the telephone connection thru the "Phone" socket of the splitter.
Let me explain, there are three sockets in the splitter:
1. Line.
2. DSL.
3. Phone.
Line & DSL sockets are on the same side and Phone is on the other side.
Line: In this socket ur telephone cable is inserted from the phone jack.
DSL: In this socket, insert the DSL cable and other end goes to the DSL modem.
Phone: Insert the telephone instrument cable in it. If you want a DSL and telephone connection in the same room.
This way it won't affect the speed of ur DSL connection. Plus there will be no disturbance in ur phone line.
If u r using parallel lines -
Attach the splitter (in the same way, as stated above) to the main line that comes in ur house. That is, attach it before the line get splits in other rooms.
Hope no doubts now