but now bsnl changed all the above method
Method 1
To know BSNL’s Broadband usage, customer has
to send SMS “REG Landline Number” prefixed with your STD code (For Example REG 0172 2123456) to the following numbers:
52295: For Bsnl Mobile Customers.
9448077777: For Any Other Mobile Customers other than BSNL.
After Registering your landline number, you will soon receive a usage summarized details
Problem of this method is that for limited plans you will get the overall usage including night surfing/downloading.
Alternatively
Visit and register there online
Broadband online usage check
Method 2
Presently to check your bsnl bb usage you need to open bsnl Selfcare in internet explorer only
1.Register there
2.Bsnl will send you mail containing username and password
3. login to bsnl Selfcare
4.Site will ask you to change password by willing old and new password
5.Click on my services in left hand site
6.Click on view broadband usage(to get summarised view)
7.Click View usage (for brief view)