VOIP missed call - call back

I am an individual who is interested in doing a small experiment. I have an Rapidvox account with which i can make sip calls. i want to do this. 1. I give a missed call to a indian landline number (preferably a number purchased from [login to view URL]) 2. Now my Asterisk Server has to call me back on my number from which i gave a missed call. 3. Now i pick the call (lets say call 1), and type the number i want to connect and press #. Example : 9884452152# 4. Now my asterisk server again calls to that number (9884452152) and connects call 1 and call 2. On this way, i need now make an out going call to call from A to B , instead i achieve it via giving a missed call and get incoming call and connect A and B. Budget 50$