About Cisco Router ISR 2851 Integrated Services

The Cisco 2851 Integrated Services Router is a high-performance router from the Cisco ISR 2800 series, designed for medium to large branch offices and enterprise networks. It combines routing, security, voice, and WAN connectivity into a single, modular device, providing secure, reliable, and scalable network services.

The router supports modular expansion, allowing organizations to add WAN, voice, and security modules based on business requirements. With dual Gigabit Ethernet ports, optional embedded security, and support for multiple services running simultaneously, the Cisco 2851 ensures high throughput and robust network performance.

This router is ideal for branch offices, enterprise WANs, remote sites, and data centers, providing advanced services such as VPN, firewall, intrusion prevention, QoS, and VoIP. Its flexibility and scalability make it suitable for modern network environments where security, high availability, and performance are critical.

Key Features

• High-Performance Routing Dual 1-Gigabit Ethernet interfaces with support for multiple WAN protocols.

• Integrated Security IPSec VPN, Firewall, Intrusion Prevention, and encryption acceleration.

• Voice & Unified Communications Ready Supports VoIP, Call Manager Express, and voice module expansion.

• Modular Expansion 3 network module slots, 2 enhanced high-speed WAN interface slots, and PVDM slots for voice.

• Advanced QoS & WAN Optimization Prioritize critical applications, ensure reliable VoIP and data performance.

• Dual Redundant Power Supply Support Ensures high availability in mission-critical deployments.

• USB & Console Ports Easy management, monitoring, and software upgrades.

• Enterprise-Grade Reliability Designed for 247 operation in large-scale deployments.