Having got to grips with phrases, I can now see that there is a cheating
way to do this, which maybe should be put in the wiki?

Essentially, the idea is to have file
<freeswitch>/conf/lang/en/simple/simplesay.xml:

<include>
  <macro name="say">
    <input pattern="(.*)">
      <match>
        <action function="execute" data="sleep(1000)"/>
        <action function="speak-text" data="$1"/>
      </match>
    </input>
  </macro>


Modify <freeswitch>/conf/lang/en/en.xml to include:

<X-PRE-PROCESS cmd="include" data="simple/simplesay.xml"/>

If you don't use cepstral, edit the first line to be:

<language name="en" say-module="en"
sound-prefix="$${sounds_dir}/en/us/callie" tts-engine="flite"
tts-voice="kal">


Then in a lua script, you can do something like this:

destnum = session:playAndGetDigits(3, 20, 3, 5000, "#*",

"phrase:sa:"..sayWhatFirst, "", "\\d+")

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