I am Unable to create a DLS connection

Every time i am trying to add a DSL (pppoe) connection,
by usingConnection Editor
Add>DSL>
Service: Unique Broadband
Username:
Password:
Then when i am clicking ok, then no new DSL Connection is adding.
What can i do ?
Please give me an effective solution.
N.B:
Connection Cable was plugged in to the LAN Port,when i was trying to create a DSL connection.
I am using Intel DG41RQ Mainboard
O/S :Netrunner 13.12