telephony - touch tone

[dciadmin]

Does anyone know where I can get free vb6 code that will allow a program to wait for a telephone call and then perform various "duties" depending on which touch tone it captures?

I want to write a program that will wait for the call and then answer and somehow capture the tone sent from the other end. Then I can use the captured tone and the program will determine which tone was sent and perform a different function for each tone.

I have written a program that will wait for a call, answer, and then it runs various duties for me but the problem is that it will run these for every call that comes in (not just the ones from me). I need it to verify that it is a call that it should respond to. Do I just need to dig further into the Tapi commands? Is there any pre-made free code around?

Thanks for the input ...