Firefox OS/Comms/Dialer/DTMF Tones

Gabriele is the best person to contact for issues here.

• Used by answering machines, for example, to see what number was pressed
• The keypad code is not very nice
  • More than 50 numbers breaks down our logic for example
  • Swiping fingers over the keypad doesn't work very well
• When user hits a button, we play the sound for that number and send over network at the same time
  • Sound is very glitchy on first play due to WebAudio blugs
  • Was a certification blocker
  • Plastered with workarounds, 2 separate hacks in keypad, should be as simple as playing a sound