hi, i do not calim that this is a very easy way for everyone...
and i do not calim that this is only way to calculate....
and i am not programmer, so i can not make any piece of software for the purpose.....
but anyway, this is what i am doing.....
what u need
1. openoffice.org v 2 or higher
2. opera v 9 or higher
let's start......
use opera browser, go to
BSNL - Broadband Account Management then check your usage check as usual...when usage page fully loded for desired month..click first entry of usage, "sl no 1" hold left mosue butten and go to the end of the total usage entry, u can press spage bar to speed up the process. this way all data usage can be selected.
now right click on selected area and click on copy..
open openoffice.org 2.2's calc sheet given here
USAGE.ods
select A4 field on sheet 1, right click on cell and click paste, and then in "text import" click ok...
in O , P , R , S column u can get the download between NU time and without NU time.
password for cell modification is onlytest
for february month my portal shows data transfer is 75092 MBytes, here this calculation shows 621.25MBytes as charged usage and 74471.18MBytes as free data transfer.
for january month my portal shows 133524MBytes and this calculation shows 2099.91Mbytes as charged and 131425.04 MBytes as free data transfer
for december month 63206MBytes is from portal, and 927.18MBytes for charged/ 62255MBytes for free was given by this calculation.