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Cisco 1800 Series Routers (Modular) Hardware Installation Guide
OL-5876-03
Chapter 2 Overview of Cisco 1800 Series Routers (Modular)
Hardware Features
Figure 2-2 The Cisco 1861 Integrated Services Router with FXO Ports
Figure 2-3 The Cisco 1861 Integrated Services Router with BRI Ports
This chapter describes the features and specifications of the router and includes the following sections:
• Hardware Features, page 2-2
• Chassis Views, page 2-8
• Interface Numbering, page 2-9
• Interface Numbering on the 1861 Integrated Services Router, page 2-10
• Specifications, page 2-11
• Regulatory Compliance, page 2-11
Hardware Features
This section describes the basic features of Cisco 1800 series routers. It contains the following:
• Product Serial Number Location, page 2-3
1 WAN slot 3 Expansion switch port
2 FXO ports
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1 BRI ports 3 FXS ports
2 Power over Ethernet (PoE) ports 4 Fast Ethernet (FE) port
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