Follow these steps to check your account usage –
1.Open bsnl site with any browser .(Firefox, Safari, Opera, Internet explorer)
2.Type this address www.bsnl.co.in or click this link.
3.Go to navigation bar services > Bsnl Broadband and then click check usage.

4.Now You are automatic redirect dataone site.(you can also open this site directly )
5.Click check your account usage.

6.And login with your id and password.(complete steps)
Note: you can check directly your account with this link, but sometime this address change by bsnl. So best way for you check account usage with www.bsnl.co.in or www.dataone.in

