Proof of concept: outbound voice calls + two-way WhatsApp messaging
Initiate outbound calls to any mobile number using the Nigerian Vonage number. Calls are answered with a spoken message via text-to-speech (NCCO).
Send and receive two-way WhatsApp messages via the Vonage Messages API. Inbound messages are stored and shown in a conversation thread.
For local development, expose your app with ngrok http 8000 and replace the domain above.