const Twilio = require('react-native-twilio');

...

componentWillMount() {
  Twilio.initWithTokenUrl('https://example.com/token');
  // or 
  Twilio.initWithToken('sometoken');
  Twilio.addEventListener('deviceDidStartListening', this._deviceDidStartListening);
  Twilio.addEventListener('deviceDidStopListening', this._deviceDidStopListening);
  Twilio.addEventListener('deviceDidReceiveIncoming', this._deviceDidReceiveIncoming);
  Twilio.addEventListener('connectionDidStartConnecting', this._connectionDidStartConnecting);
  Twilio.addEventListener('connectionDidConnect', this._connectionDidConnect);
  Twilio.addEventListener('connectionDidDisconnect', this._connectionDidDisconnect);
  Twilio.addEventListener('connectionDidFail', this._connectionDidFail);
}

...

Twilio.connect({To: '+61234567890'});
  
Twilio.disconnect();

Twilio.accept();

Twilio.reject();

Twilio.ignore();