switch (CurrentStatus)
        {
            case TCallStatus.clsBusy:
                //Do something
                break;
            case TCallStatus.clsCancelled:
                //Do something
                break;
            case TCallStatus.clsFailed:
                //Do something
                 break;
            case TCallStatus.clsFinished:
               //Do something
                break;
    ..........
    .......
   }

if(yourInstance.Call.Status.Equals(TCallStatus.clsRinging)
{
  Console.WriteLine("Print status : {0}", Call.Status.ToString());
}