How to use and activate ISD calls on BSNL Landline?

mreccentric

Addict
I got banned!
Messages
1,413
Location
India
ISP
Airtel / ACT / BSNL
The plan details say that ISD call rates are 1.2 per minute. How can i dial a ISD number with it's country code, and how do i activate ISD calling on BSNL landline number?
 
Anybody knows this? Or should i call the customer care??