testNetworkConnectivity()

await call.startCamera();
const videoTrack = call.participants().local.tracks.video.persistentTrack;

const { result } = await call.testNetworkConnectivity(videoTrack);

switch (result) {
  case 'failed':
    console.warn('Cannot connect to TURN servers. Try a different network.');
    break;
  case 'aborted':
    console.log('Test aborted.');
    break;
  case 'passed':
  default:
    console.log('Network connectivity confirmed.');
}