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可能重复： Hayes AT 命令：检测远程挂断？
我正在编写一个 C++ 程序来操作模拟调制解调器。我无法检测到远程挂断。但是我已经能够配置和拨打电话。
有没有办法处理调制解调器中的远程挂断，它不提供和响应远程挂断？