I have been using bsnl broadband connection for past few years.It is really good and monthly charges also affordable compare to other broadband connections.Here we will see some solution for connection related problem while using broadband connection.
Check your modem lights are ON or OFF
For example Power,DSL,Internet,Lan1(for Type 1)
Power,DSL,Internet,WLAN (for Type2).
If any one of the light is off then it is a connection problem.For this problem
you can try the solution like Resetting the Modem(Modem switch off and on) .If problem still persists you need to call your area broadband team for support.
This is also one of the most important problem i faced this problem few days before.Finally i got the solution for this problem.If you able open some websites and unable to open few websites means it is DNS problem.Usually some websites have complicated pages those kind of websites you can’t open if you have this time.
Google OpenDNS will help us to solve this problem.it is more past and more security.Let me tell you how to configure Google DNS on your computer
Control Panel ->Network and Sharing Center->Manage Network Connections then Right Click LAN Area Connection or Wireless Network connection depends upon your modem.
Click Properties and configure following DNS Address like below.