dunno but here is the mail i received from bsnl.. making it official that the new structure has been implemented...

Pupudada!
Dear Customer,
You have been using broadband Internet service (dataone) for sometime. You are enjoying broadband 'dataone' service with unlimited up/download up to June 30, 2005. With effect from July 1st, 2005 usage based billing will start. The download limit and charge for extra usage of each plan is given below.
DATAONE - HOME PLANS
Home 500 Home 1000 Home 1800 Home 3300
Bandwidth 256 Kbps 384 Kbps 512 Kbps 1 Mbps
Download/ Upload Limit (GB) 1 GB 2 GB 5 GB 10 GB
Additional Usage Charges/MB
beyond free download/upload limit (Rs) 2.0 1.50 1.50 1.50
DATAONE - -
BUSINESS PLANS
Business 1200 Business 3000 Business 5000 Business 9000
Bandwidth 256 Kbps 512 kbps 1 Mbps 2 Mbps
Download/ Upload Limit (GB) 4 GB 10 GB 20 GB 40 GB
Additional Usage Charges/MB
beyond free download/upload limit (Rs) 2.0 1.50 1.50 1.50
Kindly note that, using your userid and password, broadband can be accessed from other broadband connection also. To prevent any misuse of your password, change your password as soon as possible by following procedure. Keep changing your password at regular interval.
Procedure for changing broadband password
Go to
http://10.240.43.216 or
http://10.240.128.195. Type your current userid and password. Go to 'Change password'. Type old password, new password, confirm password. Password has been changed successfully.
Procedure for checking your usage record of each month
Goto
http://10.240.43.216 or
http://10.240.128.195. Type your current userid and password. Go to 'Service record' and check your usage.
Thanking you,
Sincerely yours
R. N. Yadav
Divisional Engineer/Broadband
Calcutta Telephones,
34 B. B. D. Bagh, Kolkata- 700001