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　　A. IP and port number settings

　　The remote setting of IP and port numbers through SMS instructions is mainly aimed at the operation of installing and using F300 devices for the first time. The purpose of related settings is to associate the device with the corresponding central platform. F300 transmits data to the Internet through a fixed path [IP, port] through GPRS/CDMA transmission. The transmission path can be set remotely through SMS instructions. For specific setting methods, please refer to the "Remote Modifying IP, Port Number" section later.

　　B. APN Access Settings

　　Due to the different APN gateway access points set by wireless mobile network service providers in different countries and regions, the username and password for logging into GPRS/CDMA networks also vary. We need to reset the wireless mobile GPRS/CDMA login APN gateway, network login username, and network login password for the terminal to use wireless mobile GPRS/CDMA normally. After setting up the APN gateway, network login username, and network login password correctly, restart the terminal device before normal use. (This device defaults to China Mobile APN Gateway CMNET) For specific settings, please refer to the "APN Access Settings" section later. Note: After setting various parameters of the equipment, please check whether the status display of the equipment LED indicator is normal. After the status display of the equipment LED indicator is normal, you can contact the monitoring personnel in the center to enter the vehicle.

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