title: Twilio - how do they send/receive SMS
body: <p>I'm interested to find out how twilio's SMS sending/receiving feature works, on long codes, or local numbers</p>
  
  <p>Outside of the states, mobile originated SMS terminated on a long number is very common, however, inside the US I had thought that the MMA required termination on approved shortcodes?</p>
  
  <p>Any ideas?</p>
  
  <p>Thanks</p>