this is not any add on behalf of any webside. i am posting it in order to let all the members of BT to know the way of calling to Bangladesh for free even to mobiles. you may place limited trial calls to BD, but 200 free minutes per week if you register with the webpage for at least 10 euros. sound quality is just great. i myself using this service for a few days!

lowratevoip dot com

good luck people!