title: how to get started with "phone service" (like phone banking) development?
body: <p>I want to develop a system that users remotely interact with over a phone call. Like your bank's phone banking system.</p>
  
  <p>This system will be very simple: when a user calls, it merely needs to prompt the user and accept input purely through the keypad. Additionally it will need to be able to receive and send text messages.</p>
  
  <p>1- Are there non-proprietary frameworks out there that support this?</p>
  
  <p>2- Can anyone share the basics of their experiences in deploying this kind of system? Pitfalls, what to watch out for, etc?</p>