Tapi Application in VB...

Hai all,

My Requirements are us follows :

1) Using  Tapi Control i has to make a call.
2) I has to find the status of the call.
3) If the receiver pick up the phone, then Wave formatted message has been sent to the receiver.
4) And the line has to drop automatically.
5) If the receiver doesn't pick up the phone or the line is busy. We have to inform it to the user(who is dialing).

First of all i would like to know what are all basic requirements for this application. Is other any other special modem is needed for the application.( I am having 33600 bps v34/asvd/voice for modem).

I am having tapi32.dll of version 4.90.0.3000.

Thanks in Advance
Aravind.