Well I have found the solution to this.
And i would like to share it with others as well. So here is the procedure
This procedure is for MT880:
open
http://192.168.1.1/
Goto ATM Setting
Set
Connection Type: PPP
PPPoA/PPPoE: PPPoAPPPoE
Username:
Password:
Use
DNS: Enabled
Now Submit this
Then click on small Magnifier glass icon in the last in front of Status, a new window will open, in then
windows click on Always On and then submit
Then click on
Other Setting->DNS
here set the following:
DNS Relay: Enable
Primary DNS Server: 61.1.96.69
Secondary DNS Server: 61.1.96.71
Now you need to setup your network
Go to Internet Protocol Properties and set the following:
IP address: 192.168.1.2
Subnet
Mask :255.255.255.0
Default gateway: 192.168.1.1
Preferred DNS Server :61.1.96.69
Alternate DNS Server: 61.1.96.71
Thats it and your are done.
Hope this helps someone.