Cisco Systems CISCO1841-HSEC/K9-RF Overview of Cisco 1800 Series Routers Modular, C H A P T E R

C H A P T E R 2

Overview of Cisco 1800 Series Routers (Modular)

Cisco 1800 series integrated services routers (ISR) (modular) are modular routers with LAN and WAN connections that can be configured by means of interchangeable interface cards and advanced integration modules (AIMs). The modular design of the routers provides flexibility, allowing you to configure or reconfigure your router according to your needs.

The Cisco 1841 router is a data-only device for desktop use.

Figure 2-1shows the Cisco 1841 router.

Figure 2-1 The Cisco 1841 Router

SYS	SYS
PWR
	ACT

Cisco 1800

Series

122331

The Cisco 1861 ISR, which is part of the Cisco 1800 series ISR family, is a unified communications solution for small- to medium-sized businesses and enterprise small branch offices that provides voice, data, voice-mail, automated attendant, video, and security capabilities while integrating with existing desktop applications such as calendar, e-mail, and customer relationship management (CRM) programs and with built-in security. It has the following core components:

•Integrated Cisco Unified Communications Manager Express or Survivable Remote Site Telephony for call processing for up to 12 users

•Optional Cisco Unity Express for voice messaging and automated attendant

•Integrated LAN switching with Power over Ethernet (POE) expandable via Cisco Catalyst Switches

•Optional support for a range of WAN interface cards

Figure 2-2and Figure 2-3show the Cisco 1861 ISR.

Cisco 1800 Series Routers (Modular) Hardware Installation Guide

OL-5876-03 2-1