public void SuccessfulCall()
{
Assert.That(_senderTerminal.ConnectToExchange() == true);
Assert.That(_reciverTerminal.ConnectToExchange() == true);
Assert.That(_senderTerminal.MakeCall(_reciverTerminal.PhoneNumber) == CallState.Connected);
Assert.That(_reciverTerminal.ReceiveCall() == CallState.Connected);
Task.Delay(1000).Wait();
Assert.That(_reciverTerminal.CloseCall() == CallState.Disconnected);
Assert.That(_senderTerminal.DisconnectFromExchange() == true);
Assert.That(_reciverTerminal.DisconnectFromExchange() == true);
}