I need to know about the availability of IVR software.

0
I need to know about the availability of IVR software which answers our queries 

- by voice like Vodafone customer care 
(or) 
- by keypad press like other networks customer care.


Im doing one project for villagers for which i feel IVR will be useful as mobile is more common than internet in villages.

Advance Thanks...

    I need to know about the availability of IVR software.