Twilio – Make a voice call and Interaction, Recording via TwiML

TwiML is a set of instructions you can use to tell Twilio what to do when you receive an incoming call, SMS or fax.

There is <Say>, <Record>, <Gather> verbs in TwiML.

The <Say> verb converts text to speech that is read back to the caller.

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Say voice="woman" language="fr-FR">Chapeau!</Say>
</Response>

The <Gather> verb

• The caller enters digits followed by a # symbol or 5 seconds of silence. Twilio will submit those digits in a POST request back to the URL hosting your TwiML.
• The caller doesn’t enter any digits and 5 seconds pass. Twilio will move on to the next TwiML verb in the document – since there are no more verbs here, Twilio will end the call.

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Gather input="speech dtmf" timeout="3" numDigits="1">
        <Say>Please press 1 or say sales for sales.</Say>
    </Gather>
</Response>

The <Record> verb records the caller’s voice and returns to you the URL of a file containing the audio recording.

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Record timeout="10" transcribe="true" />
</Response>