Cisco C899G Cellular, Ethernet Wireless Integrated Services Router

Meet the Cisco C899G Cellular, Ethernet Wireless Integrated Services Router—a compact, fixed-configuration solution engineered for secure, reliable connectivity at small offices, remote sites, and branch locations. Designed to leverage the power of 4G LTE alongside traditional Ethernet WAN, this router delivers seamless, resilient networking for today’s distributed enterprises. It brings together enterprise-grade security, flexible deployment options, and simplified management to ensure business-critical traffic—whether data, voice, or video—stays online and protected. Perfect for environments where wired connectivity is not always available or where WAN redundancy is essential, the C899G offers a robust platform for modern offices that demand unwavering performance and scalable, cost-effective networking.

• Seamless dual-WAN capability with built-in 4G LTE and Ethernet support for resilient connectivity. The Cisco C899G is designed to maintain service continuity even when your primary internet connection experiences an outage, automatically switching to cellular when needed and returning to wired WAN when the link is restored. This WAN failover capability reduces downtime and keeps critical applications, cloud services, and VoIP communications up and running without manual intervention, making it an ideal fit for retail locations, remote offices, and field teams.
• Enterprise-grade security and networking features in a compact fixed-configuration package. The C899G delivers a comprehensive security stack, including firewall protection, VPN support (such as IPsec), and policy-based routing to enforce access controls and protect sensitive data. It prioritizes mission-critical traffic with QoS, ensuring that voice and video receive the bandwidth they require, even during peak network usage. With centralized management options and Cisco’s evolving security capabilities, you can confidently safeguard multi-site networks against evolving threats.
• Plug-and-play deployment optimized for quick site installations. This router is purpose-built for straightforward setup in small offices and remote sites, shaving days off rollout timelines. Its fixed configuration reduces guesswork during deployment, while its scalable design supports gradual expansion as your network footprint grows. The C899G integrates cellular and Ethernet connectivity in a single, space-saving device, which simplifies cabling, reduces hardware complexity, and lowers total cost of ownership while delivering enterprise-grade performance.
• Flexible management and compatibility to fit mixed-network environments. The Cisco C899G supports familiar Cisco management paradigms—including web-based interfaces and CLI—allowing network teams to configure, monitor, and troubleshoot with confidence. It is designed to integrate with existing security policies and device management workflows, supports remote management scenarios, and is compatible with Cisco’s broad ecosystem of software updates and compatibility with third-party services. This flexibility makes it suitable for organizations migrating from legacy routers to more resilient, software-defined networking approaches.
• Versatile deployment scenarios for branch offices, temporary sites, and mobile-office needs. The C899G is an adaptable solution for a range of use cases—from small business offices requiring reliable internet access to temporary events, kiosks, or education facilities needing secure connectivity without heavy IT overhead. Its combination of 4G LTE connectivity, VPN capabilities, and firewall protections gives IT teams a practical, scalable platform for extending secure network coverage to locations that demand fast, dependable networking without sacrificing security or control.

Technical Details of Cisco C899G

• Fixed-configuration design optimized for quick deployment in small offices and remote sites, simplifying setup and reducing maintenance complexity.
• Integrated 4G LTE cellular interface paired with Ethernet WAN support to deliver flexible, resilient connectivity and optimized traffic routing.
• Comprehensive security feature set including firewall protection, VPN (IPsec) capabilities, and policy-driven routing to safeguard data and enforce network controls.
• QoS and traffic management to prioritize business-critical applications, along with centralized management options for streamlined administration.
• Suitable deployment across a range of environments such as retail, education, and field operations that require secure, reliable connectivity with minimal IT overhead.

How to install Cisco C899G

• Prepare the installation area by ensuring a stable power source and access to a compatible SIM card for the cellular module, if required by your deployment scenario. Confirm that the local network environment supports the required WAN configurations and IP addressing scheme.
• Connect the Cisco C899G to the network: attach the Ethernet WAN to your primary router or switch and, if applicable, install the SIM card for cellular connectivity in the appropriate slot. Verify all cables are secured and that the device is powered on.
• Access the device’s initial configuration interface using a computer connected to the LAN. Open the web-based setup portal or connect via the CLI, then begin by setting the administrator credentials, network parameters, and basic security options such as the firewall and VPN service.
• Configure WAN priorities and failover behavior. Define whether the Ethernet link or the cellular link should serve as primary and configure health checks, link monitoring, and automatic failover thresholds to ensure uninterrupted connectivity during outages.
• Finalize deployment with security hardening and service optimization. Establish VPN tunnels for remote sites if needed, apply QoS rules to prioritize voice and critical data, update firmware to the latest Cisco release, and validate connectivity by testing failover scenarios and remote access capabilities.

Frequently asked questions

• Q: What is the Cisco C899G Cellular, Ethernet Wireless Integrated Services Router?

  A: It is a fixed-configuration enterprise router combining cellular 4G LTE connectivity with traditional Ethernet WAN to deliver secure, reliable connectivity for small offices and remote branches. It integrates essential services such as firewall protection, VPN capabilities, and robust routing to support voice and data communications across distributed networks.

• Q: Does the C899G support WAN failover?

  A: Yes. The device is designed to utilize both cellular 4G LTE and Ethernet WAN links, enabling automatic failover to maintain connectivity when one link experiences an outage, and seamless return when the primary link is restored.

• Q: Can I run voice services on the C899G?

  A: The router supports data and voice traffic through its integrated services, with features like QoS and basic VoIP-compatible traffic handling. Exact voice capabilities may depend on the specific model variant and software licenses.

• Q: What security features does the C899G include?

  A: It includes firewall protection, VPN support (IPsec), and policy-based routing to enforce access rules and protect data as it traverses the network. Additional security enhancements can be applied through software updates and Cisco management tools.

• Q: How is the C899G managed?

  A: Management is available via a web-based GUI and CLI, with options for remote management, firmware updates, and centralized policy enforcement. It integrates with Cisco’s suite of management tools to simplify administration and scale across multiple sites.