Cisco C819 Wi-Fi 4 IEEE 802.11n Cellular, Ethernet Modem/Wireless Router

The Cisco C819 Non-Hardened 4G LTE Integrated Services Router is a compact, purpose-built delivery vehicle for secure, reliable connectivity at the edge. Designed to fit discreetly in remote sites, small business locations, or mobile deployments, this ISR blends a rugged, space-saving form with full Cisco IOS Software capabilities. It brings together a dependable 4G LTE wireless WAN backhaul, integrated WLAN, and wired Ethernet in a single, fanless device. Whether you need a dependable backup connection, a primary WAN at a remote office, or a portable networking solution for temporary deployments, the Cisco C819 is engineered to deliver fast setup, robust security, and seamless management without compromising on performance or security.

• The Cisco C819 is built to simplify edge networking with integrated 4G LTE wireless WAN alongside WLAN, letting organizations deploy fast, tent-card-ready connectivity at the edge. This combination enables rapid site deployment and mobile backhaul, making it ideal for disaster recovery sites, temporary offices, or locations where terrestrial backhaul is impractical. With the integrated cellular modem, you can establish connectivity quickly without importing extra hardware or complex cabling, and you gain the agility to switch WAN paths as needed for reliability and business continuity.
• Security and reliability are at the core of the Cisco IOS Software-based ISR design. The C819 supports robust firewall features, VPN capabilities (for site-to-site and remote-access), and advanced security services that help guard sensitive data and maintain compliant operations even in less secure environments. Its compact footprint does not compromise enterprise-grade features; you get secure WAN failover, encryption, and policy-driven traffic control that scale with your needs, ensuring safe, predictable performance for essential applications, voice, and data streams.
• Integrated WLAN brings convenient wireless access to the edge. The C819 provides 802.11n wireless connectivity, enabling devices, laptops, and mobile endpoints to connect to the network without external access points. This is especially valuable in small offices or satellite locations where a single device must handle routing, network access, and wireless provisioning. The built-in wireless capability reduces hardware inventory while delivering a familiar Cisco IOS management experience for consistent policy, security, and QoS across wired and wireless segments.
• The device is designed for rapid deployment and ongoing reliability in challenging environments. Its small, fanless chassis operates quietly and efficiently, reducing noise and maintaining performance in office corners, vehicle dashboards, kiosks, or temporary shelters. The ISR foundation—Cisco IOS Software—delivers familiar configuration paradigms, robust diagnostics, and predictable firmware updates, ensuring that network administrators can provision, monitor, and maintain the C819 with confidence, even when network footprints are distributed and diverse.
• Management simplicity and scalability are central to the C819 experience. Centralized policy enforcement, straightforward configuration workflows, and Cisco’s established security posture help administrators deploy consistent security and routing rules across multiple sites. With integrated LTE as a backhaul option and wired Ethernet interfaces, IT teams can implement reliable, policy-driven transport for mission-critical apps, while maintaining granular control over access, QoS, and VPN options—whether networks are consolidated in a single location or distributed across a broader geographic footprint.

Technical Details of Cisco C819

• Integrated 4G LTE wireless WAN with support for mobile broadband backhaul and failover scenarios
• IEEE 802.11n WLAN capability for on-site wireless access in the 2.4 GHz band
• Cisco IOS Software-based router with enterprise-grade features for security, routing, and VPN
• Compact, fanless form factor designed for edge deployments and space-constrained locations
• Secure remote management and policy-driven configuration to support reliable, scalable edge networking

How to install Cisco C819

• Unbox the Cisco C819 and verify all included components. Ensure you have a compatible SIM card installed if you intend to use the 4G LTE WAN backhaul. Prepare any required network parameters such as APN and carrier settings as appropriate for your environment.
• Power up the device and connect the recommended power source. If you are using the integrated cellular modem, insert the SIM according to the device guide and verify SIM readiness (active service, signal strength).
• Connect your computer to the router’s management interface using a default IP address or the setup guide provided by Cisco for the C819. Access the web-based setup wizard or the Cisco configuration app to begin initial configuration.
• Configure WAN, WLAN, and security policies. Set up the 4G/LTE backhaul, define primary and backup WAN paths if you plan to use multiple connections, enable firewall rules and VPN tunnels (IPsec or SSL VPN as supported), and create QoS policies to prioritize critical applications.
• Apply firmware updates and validate connectivity. Test failover between wired and cellular backhaul, confirm wireless coverage and stability of wireless clients, and monitor the router's performance and logs to ensure ongoing reliability and security.

Frequently asked questions

• Q: Does the Cisco C819 support 4G LTE as a primary backhaul or only as a backup? A: The Cisco C819 is designed to provide integrated 4G LTE wireless WAN backhaul, which can serve as a primary connection or as a failover path alongside wired Ethernet connections, depending on your deployment and policies. It enables flexible edge connectivity for remote sites and mobile deployments.
• Q: What wireless standards does the C819 use? A: The device includes an 802.11n WLAN interface in the 2.4 GHz band, enabling wireless connectivity for client devices and local network access at the edge. It does not rely solely on wireless for backhaul and is designed to work in concert with its wired Ethernet interfaces and VPN capabilities.
• Q: What security features are included? A: The C819 offers enterprise-grade security integrated within Cisco IOS Software, including firewall technology, VPN support (for site-to-site and remote access), and policy-based traffic management. These features help protect traffic, enforce access controls, and support secure remote deployments.
• Q: Can I manage the C819 remotely? A: Yes. The Cisco IOS-based platform supports centralized and remote management approaches. You can configure and monitor the router through standard Cisco management tools and interfaces, allowing for consistent policy implementation across multiple edge devices.
• Q: Is this router suitable for small offices or remote locations? A: Absolutely. The Cisco C819 is purpose-built for compact, edge-oriented deployments, delivering integrated 4G LTE, WLAN, and wired Ethernet in a small form factor. Its combination of portability, security, and Cisco IOS reliability makes it a strong choice for remote sites, temporary offices, and mobile networks where space and power efficiency matter.