BSNL — 3g Data card not working

Address:

Kollam, Kerala

Dear Sir,
Recently I purchased bsnl 3g modem ,a Teracom product and got a 3g sim with it. I installed the software properly but whenever I tried to connect to the internet "A PPP link control protocol was terminated" error message will appear. I reinstalled the software several times and even my operating system (Windows XP and 7) but nothing solve my problem. Is anyone has a solution please write to me at [protected]@gmail.com