OpenVBX (http://www.openvbx.org/ http://www.openvbx.org/) does exactly this and runs on twilio however it's a bit of a chore to setup on EC2 and unfortunately d

OpenVBX (http://www.openvbx.org/ http://www.openvbx.org/) does exactly this and runs on twilio however it's a bit of a chore to setup on EC2 and unfortunately development isn't that active so I wouldn't expect to see MMS anytime soon. A real shame. I used it to setup a menu with recordings and things like'press 1 for support' to route calls for our sales and support teams.