To Fill the IP Addresses in BSNL Broadband Router / Modem double click on two computer connected picture at right bottom corner, where a clock also exits, opposite to Start menu.


Now a dialog box local area connection status will open. Then click on properties button. Now scroll down 

" This connection uses the following items: "

please find & Select with left single click  ==>     Internet Protocol (TCP/IP)

Now again after selecting " Internet Protocol (TCP/IP) " Click on properties button

==> "Click Use the following IP Address"


IP Address      :  192.168.1.250

Sub Net Mask    :  255.255.255.0

Default Gateway :  192.168.1.1

Now on Fourth Box 

Use the following DNS Server Addresses:

Preferred DNS Server : 202.164.32.82

Alternate DNS Server : 202.164.51.21