Cisco Cisco 1900 2900 3900 Series 4-Port Gigabit Ethernet HS-WIC with PoE Installation Guide

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Cisco Systems, Inc.
www.cisco.com
Installing the Cisco 1-, 2-, and 4-Port Serial 
Network Interface Modules for Cisco 4400 Series 
ISRs
July 21, 2014
OL-31532-01
This document provides information that you should know before and during the installation of the Cisco 
1-, 2-, and 4-port Network Interface Modules (Cisco 1-, 2-, and 4-port Serial NIMs) in the Cisco 4400 
Series Integrated Services Routers (ISRs). This document contains the following sections:
About the Cisco 1-, 2-, and 4-port Serial NIMs
 
The Cisco 1-, 2-, and 4-port Serial NIMs are multi-protocol synchronous serial network interface 
modules (NIMs) supported on the Cisco 4400 Series ISRs. The Cisco 1-port, 2-port, and 4-port Serial 
NIMs expand the capabilities of the router to provide connectivity for synchronous interfaces in a wide 
range of applications including up to 8Mbps date rate for high speed high-level data link control 
(HDLC). These capabilities can be utilized as Point-to-Point Cisco HDLC WAN interface or frame relay 
interface. The Cisco 1-, 2-, and 4-port Serial NIMs have their own serial communication controllers 
(SCC) and they do not rely on the host router for SCCs.
 lists the Cisco 1-, 2-, and 4-port Serial NIMs SKUs.