Description
4G network port typically refers to the network interface on a device that supports 4G network connectivity, which may refer to a network port device that accesses the internet via 4G or a conversion solution from 4G to wired network port. The following provides explanations from common application scenarios and configuration methods.
4G network port devices are commonly found in products such as network cameras and routers. For example, the wired network port of a 4G network camera is mainly used for device management or local network access (such as connecting to an NVR), rather than directly accessing the internet; the camera needs to be inserted with a 4G SIM card and connected to the internet via wireless network, with the wired network port only supporting firmware upgrades or local access to the Web interface. Similarly, 4G routers (such as Ruijie RG-RSR10-01G-T(A)) are equipped with multiple Ethernet ports, supporting WAN/LAN switching, which can convert 4G signals into wired networks for multi-device sharing. The 4G-to-wired network port solution can be implemented through an embedded system. For example, using an ESP32 paired with a 4G module (such as a Cat.1 module), a PPP dial-up connection is established through a USB or UART interface, and then the wired network is outputted through an Ethernet PHY chip (such as LAN8720). At the software level, NAT forwarding and DHCP services need to be configured to enable downstream devices to share 4G internet access through network cables. Typical scenarios include industrial gateways or mobile office devices. When configuring 4G network port devices, attention should be paid to mode switching and network parameters. Taking cameras as an example, the "4G internet access mode" and "wired internet access mode" can be switched through the Web interface: the former relies on SIM card dialing, while the latter supports setting parameters such as IP and subnet mask through network cables. Router-type devices usually automatically handle the integration of 4G and wired networks, but it is necessary to ensure that the 4G signal strength and APN configuration are correct
4G network port devices are commonly found in products such as network cameras and routers. For example, the wired network port of a 4G network camera is mainly used for device management or local network access (such as connecting to an NVR), rather than directly accessing the internet; the camera needs to be inserted with a 4G SIM card and connected to the internet via wireless network, with the wired network port only supporting firmware upgrades or local access to the Web interface. Similarly, 4G routers (such as Ruijie RG-RSR10-01G-T(A)) are equipped with multiple Ethernet ports, supporting WAN/LAN switching, which can convert 4G signals into wired networks for multi-device sharing. The 4G-to-wired network port solution can be implemented through an embedded system. For example, using an ESP32 paired with a 4G module (such as a Cat.1 module), a PPP dial-up connection is established through a USB or UART interface, and then the wired network is outputted through an Ethernet PHY chip (such as LAN8720). At the software level, NAT forwarding and DHCP services need to be configured to enable downstream devices to share 4G internet access through network cables. Typical scenarios include industrial gateways or mobile office devices. When configuring 4G network port devices, attention should be paid to mode switching and network parameters. Taking cameras as an example, the "4G internet access mode" and "wired internet access mode" can be switched through the Web interface: the former relies on SIM card dialing, while the latter supports setting parameters such as IP and subnet mask through network cables. Router-type devices usually automatically handle the integration of 4G and wired networks, but it is necessary to ensure that the 4G signal strength and APN configuration are correct