Example tutorial for collecting DTMF keypad digits while using text-to-speech

dialplan.rb

# Example tutorial for collecting DTMF keypad digits while using 
# text-to-speech (TTS).  Tested on Cloudvox via AGI (Asterisk's 
# phone call API) and Adhearsion Ruby library.

default {
  execute 'swift', "%p" % "Please enter a number and we will tell you what it is when we are done talking."

  # See if our talking was interrupted by DTMF, and if so, grab the digit
  nums = variable('SWIFT_DTMF')

  if nums.nil? || nums.length < 1
    # This would generally be replaced with calling "input(1)" in Adhearsion
    execute 'Read', 'userconfirm||1|skip|2|2'
    nums = variable('userconfirm')
  end

  execute 'swift', '%p' % "You entered: #{nums}"
}