Chapter 2 Overview Of Cisco 1800 Series Routers (Modular) - Cisco 1841 - 3G Bundle Router Hardware Installation Manual

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 2-1
Figure 2-1
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 2-2
OL-5876-03
shows the Cisco 1841 router.
The Cisco 1841 Router
SY S
SY S
PW R
AC T
and Figure 2-3 show the Cisco 1861 ISR.
C H A P T E R
C is c o 1
8 0 0
S e ri e s
Cisco 1800 Series Routers (Modular) Hardware Installation Guide
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