at指令详解Windows NT Server 的服务程序管理器只能设置某项服务的启动方式（自动、手动、失效），而在日常管理工作中，常常要求某项服务能定时开启、关闭。 Windows NT Server 提供的 AT 命令能够实现这一点。利用它可 实现 RAS 服务定时开关-Detailed instructions at the Windows NT Server service program manager can only set up a service startup mode (Automatic, Manual, failure), whereas in the daily management of work, often requires a service to regularly open, close. Windows NT Server to provide the AT commands to achieve this. RAS can be achieved using its services from time to time switch