並前往https://www.mot-net.tw/blog/pbx/%E6%89%8B%E6%A9%9F%E5%85%A7%E7%B7%9A%E5%88%86%E6%A9%9F%E5%8C%96%E5%8F%AF%E8%AE%93%E5%B7%A5%E4%BD%9C%E5%9E%8B%E6%85%8B%E4%B8%80%E5%88%87%E8%AE%8A%E5%BE%97%E6%9C%89%E5%8F%AF%E8%83%BD/