title: Alternative to DTMF data transmission for Asterisk PBX connection
body: <p>We are working on a legacy project in which we are connecting to Asterisk PBX using data sent over DTMF. We are exploring using alternatives to DTMF and have zeroed in on SMS and web sockets. What will be the best approach to implement this?</p>
  
  <p>Asterisk v11 is being used.</p>