How to know when text-to-speech has finished speaking a text?

ejsan

I could be wrong, but I'm pretty sure I've seen a webhook or maybe a callback in the Twilio library that notifies the end of a "Say" verb.

I do an update to the current call:

client.calls(call_sid).update(twiml="<Response><Say>Hello there</Say></Response>")

I would need to be notified when the user has finished hearing the phrase

shelbyz

To handle what happens after TwiML executes you can add a <redirect> which can point to a URL where further TwiML instructions/processing can occur.

Example
client.calls(call_sid).update(twiml="<Response><Say>Hello there</Say><Redirect method="POST">http://pigeons.com/twiml.xml</Redirect></Response>")

ejsan

Thank you shelbyz, that solved my issue.
Even if I don't need to populate the further twiml, I can use this webhook as a side effect and just put a Pause verb in it.