故障分析与处理：由扬声器的报警声判断，故障应该出在内存上。
Fault Analysis and Treatment: the alarm sound from the speaker to determine fault should be in memory.
摄像机也包含双向声频功能、内置麦克风和扬声器，同时与外部传感器和报警器相连接。用户可通过可上网的手机进行远程监控摄像机。
The camera also includes two-way audio support with a built-in microphone and speaker, as well as connections for external sensors and alarms.
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