Cisco 2821 - Integrated Services Router Unified Communications Bundle Overview

Overview of Cisco 2800 Series Routers
The Cisco 2800 series of integrated services routers offers secure, wire-speed delivery of concurrent
data, voice, and video services. The modular design of the Cisco 2800 series routers provides maximum
flexibility, allowing you to configure your router to meet evolving needs. The Cisco 2800 series routers
incorporate data, security, and voice services in a single system for fast, scalable delivery of crucial
business applications. The routers offer features such as hardware-based VPN encryption acceleration,
intrusion-protection and firewall functions, and optional integrated call processing and voice mail. The
routers offer a wide variety of network modules and interfaces, voice digital signal processor (DSP)
slots, high-density interfaces for a wide range of connectivity requirements, and sufficient performance
and slot density for future network expansion requirements and advanced applications.
The Cisco 2800 series consists of four versions. The Cisco 2801 routers and Cisco 2811 routers are one
rack unit in height and have two 10/100 LAN ports. The more powerful Cisco 2821 routers and
Cisco 2851 routers are two rack units in height and have two 10/100/1000 LAN ports. The higher-end
router platforms of the Cisco 2800 series offer increased performance, increased slot density including
network module slots ad extension voice module slots and increased inline power output.
Figure 1, Figure 2, and Figure 3
Figure 1 Front View of a Cisco 2801 Router
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show front views of the Cisco 2800 series routers.