问题排查Troubleshooting

处理现场技术问题Handling an On-site Technical Issue

练习按现象、影响、时间线、隔离测试、临时措施和根因验证的顺序，处理相机画面、网络、误报和设备联动问题。Practise handling camera-image, network, false-alert and device-integration issues through symptoms, impact, timeline, isolation tests, containment and root-cause verification.