voip based IVR system

[Bramo]

Hi there gurus,am a final year student,doing my final year project on designing and implementing a cost-effective IVR VoIP based system
the idea is to develop an application that will receave in put as touch tones and give output/information which is pre recorded audio,the aplication will interact with the user once he/she make a call
I head that VB code can do that,other told me that perl is the appropriate solution.
is any body with the knowledg to help me in my project?
if you have codes,please send me through my e-mail
abietony@gmail.com
i preceed thanks in advance

[wje_lf]

We like to share things publicly around here, so it's not likely you'll get an email response.

Check out asterisk.

Hope this helps.

[Bramo]

thanx'i will checkout asterisk..then i will give out the results i get