I have to setup some IVR systems in some African countries. It's is a 'simple' system: users use their cell-phones to dial in, and the IVR response with some questions. The users answer with voice or phone keypad. The IVR will then store the answers onto a database (SQL server).
If I don't know what kind of PBXes are used in those places, how do I proceed with this project?
How does one deploy voice over IP vs tradition PBX?
Does anyone know which telephony cards can work overseas/Africa?
Thanks for the help.