CHAPTER
1-1
Cisco 1800 Series Integrated Services Routers (Fixed) Hardware Installation Guide
OL-6425-03
1
Overview
The Cisco 1800 series fixed-configuration routers are part of the new line of integrated services routers
that are optimized for secure, fast, high-quality delivery of multiple, concurrent services for
small-to-medium-sized businesses and small enterprise branch offices. The Cisco
1811 and Cisco 1812
routers offer an 8-port 10/100Base-T switch, dual 10/100Base-T WAN ports, two USB 2.0 ports, and
either an ISDN S/T or an analog modem port. The Cisco
1801, Cisco 1802, and Cisco 1803 routers offer
an 8-port 10/100Base-T switch; a single 10/100Base-T WAN port; an ISDN S/T port; and either an
ADSL over POTS, ADSL over ISDN, or G.SHDSL WAN port. All models also offer embedded
hardware-based encryption that provides superior performance for advanced applications, optional
802.11a/b/g wireless LAN functionality, an integrated real-time clock for validating digital certificates
and stamping syslog entries, and optional Power over Ethernet (PoE).
Figure 1-1 shows a front view of a Cisco 1800 series fixed-configuration router.
Figure 1-1 Front View of a Cisco 1800 Series Fixed-Configuration Router
This chapter describes the features and specifications of the routers and includes the following sections:
• Hardware Features, page 1-2
• Chassis Views, page 1-7
• Interface Numbering, page 1-11
• Specifications, page 1-12
• Regulatory Compliance, page 1-13
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