Creating a Voice (IVR) Flow
Interactive Voice Response (IVR) workflows allow you to send recorded voice messages that your contacts can respond to using their keypad or by recording their own message.
Voice workflows are handy for three reasons:
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They allow you to send and receive voice messages, which by nature allow for better tone, character and length than text messages.
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They're synchronous: clients and beneficiaries are actively engaged with your workflow for the duration of the call.
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They don't require your contacts to be literate, so you can reach communities with less access to education.
Voice flows are only available to accounts that have added voice-enabled Twilio or Vonage numbers.
To create a voice flow, go to the flows tab and click New Flow. In the New Flow dialog, open the Type drop-down on the right and select Phone Call, then click Create.

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