RingCentral Azure Web App Demo Specify the following credentials in query parameters: clientId clientSecret username extension password from to to is the phone number to receive SMS. Online demo http://rc-first-web-aoo-demo.azurewebsites.net?clientId=clientId&clientSecret=clientSecret&username=username&extension=extension&password=password&from=from&to=to Don't forget to replace the credentials in query parameters with real values.