> For the complete documentation index, see [llms.txt](https://indoor.router.works/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://indoor.router.works/ezr24/manual.md). # Manual - [Hardware](https://indoor.router.works/ezr24/manual/hardware.md): The indoor 4G router is an industrial-grade 4G LTE gateway designed for use in the environment and rugged deployments. - [Package Contents](https://indoor.router.works/ezr24/manual/hardware/package-contents.md): After receiving the package, please check if all of the below components are included in the box. - [Physical Interfaces](https://indoor.router.works/ezr24/manual/hardware/physical-interfaces.md): Get known of the physical interfaces on the 4G router. - [SIM Card & Power](https://indoor.router.works/ezr24/manual/sim-card-and-power.md): Physical installations of the indoor 4G router. - [Signal Quality](https://indoor.router.works/ezr24/manual/sim-card-and-power/signal-quality.md): Good 4G LTE mobile signal quality is fundamental to getting a stable and fast internet connection over the mobile network. - [Insert SIM Card](https://indoor.router.works/ezr24/manual/sim-card-and-power/insert-sim-card.md): The indoor 4G router requires the insertion of a SIM card to connect to the mobile internet networks. - [Power Supplies](https://indoor.router.works/ezr24/manual/sim-card-and-power/power-supplies.md): The 4G indoor router uses a 12Volt DC power adapter. Please ensure to use the correct voltage and current if using other power sources. - [Install Antennas](https://indoor.router.works/ezr24/manual/sim-card-and-power/install-antennas.md): The 4G router uses MIMO antennas on both mobile and Wi-Fi connections. - [Indicators](https://indoor.router.works/ezr24/manual/sim-card-and-power/indicators.md): Instructions to the status and descriptions on each indicator of the 4G router. - [Firmware](https://indoor.router.works/ezr24/manual/firmware.md): Config the 4G router firmware system. - [Login Router](https://indoor.router.works/ezr24/manual/firmware/login-router.md): Connect a phone or computer to the indoor 4G router via Wi-Fi or Ethernet. And login to the router at the default router IP address 192.168.20.1. - [System Admin](https://indoor.router.works/ezr24/manual/firmware/system-admin.md): Here are the basic system settings that should be changed on the 4G router. - [Network Interfaces](https://indoor.router.works/ezr24/manual/firmware/network-interfaces.md): The network interfaces on the 4G router. - [Local Networks](https://indoor.router.works/ezr24/manual/firmware/network-interfaces/local-networks.md): Configure the LAN interface to set up local intranet networks. - [Mobile Modem](https://indoor.router.works/ezr24/manual/firmware/mobile-modem.md): Monitor status and configure APN and Protocol on the Mobile interface. - [Mobile Protocols](https://indoor.router.works/ezr24/manual/firmware/mobile-modem/mobile-protocols.md): There are two different mobile protocols built-in the 4G 4 router. The default mobile protocol is Mobile Data. Suggest using the default protocol unless your mobile provider does not support it. - [Mobile Band Lock](https://indoor.router.works/ezr24/manual/firmware/mobile-modem/mobile-band-lock.md): In some rare conditions, such as between two cell towers, we need to lock the 4G router to work on a specific band to get a stable connection or faster speed. - [WiFi Hotspots](https://indoor.router.works/ezr24/manual/firmware/wifi-hotspots.md): Wi-Fi hotspots have been turned on by default, and the default Wi-Fi hotspots are Cell-WiFi-xxxx-V4 and V5. - [WiFi Relay](https://indoor.router.works/ezr24/manual/firmware/wifi-hotspots/wifi-relay.md): You can connect the 4G router to another Wi-Fi hotspot to get a backup Internet connection or extend the current Wi-Fi network. - [Firmware Upgrade](https://indoor.router.works/ezr24/manual/firmware/firmware-upgrade.md): Performing the file-level backup, restore, reset, and firmware upgrade on the 4G router. - [Recovery](https://indoor.router.works/ezr24/manual/firmware/recovery.md): Fix the issues on the Internet and wireless networks and rescue the router from misconfigurations. - [Advanced](https://indoor.router.works/ezr24/manual/advanced.md) - [Internet & IP](https://indoor.router.works/ezr24/manual/advanced/internet-and-ip.md): Run a first quick Internet access test to check Internet connectivity. - [Changing Web Port](https://indoor.router.works/ezr24/manual/advanced/internet-and-ip/changing-web-port.md): Guidance of how to change the Web GUI interface port on the 4G router. - [Firewall Settings](https://indoor.router.works/ezr24/manual/advanced/firewall-settings.md): The router firewall controls the forward packet streams from incoming network interfaces to outgoing network interfaces. - [Dynamic DNS](https://indoor.router.works/ezr24/manual/advanced/dynamic-dns.md): Dynamic DNS allows that your router can be reached with a fixed hostname while having a dynamically changing IP address. - [Traversal Cloud](https://indoor.router.works/ezr24/manual/advanced/traversal-cloud.md): Traversal Cloud is a secure NAT tunnel tool to provide remote control function on the 4G outdoor routers and connected hosts. - [Command-line](https://indoor.router.works/ezr24/manual/advanced/command-line.md): The command-line interface (CLI) means interacting with the router system where the user issues command to the router system in the form of command lines. - [Bootloader](https://indoor.router.works/ezr24/manual/advanced/bootloader.md): Rescue the 4G router from the "brick" mode. - [Troubleshooting](https://indoor.router.works/ezr24/manual/troubleshooting.md): The collection of the problem elimination process. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://indoor.router.works/ezr24/manual.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.