10061 WSA E ConnRefused: The Teradata server is not accepting connections

Hi,
I downloaded td-ttu-15.00_for_Windows on my personal computer and created a DSN using my public ip over internet as IP server for DSN.
While connecting the DSN on TDA i am getting "10061 WSA E ConnRefused: The Teradata server is not accepting connections".
Thanks,
Nagendra