Gather using speak

POST 
/calls/:call_control_id/actions/gather_using_speak

Convert text to speech and play it on the call until the required DTMF signals are gathered to build interactive menus.

You can pass a list of valid digits along with an 'invalid_payload', which will be played back at the beginning of each prompt. Speech will be interrupted when a DTMF signal is received. The Answer command must be issued before the gather_using_speak command.

Expected Webhooks:

• call.dtmf.received (you may receive many of these webhooks)
• call.gather.ended

200:

Successful response upon making a call control command.

422:

Unprocessable entity. The request was well-formed but could not be processed due to semantic errors. This includes validation errors, invalid parameter values, call state errors, conference errors, queue errors, recording/transcription errors, and business logic violations.

default:

Unexpected error