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OL-12851-01
T1/E1 High-Speed WAN Interface Cards
Revised: 11/26/07
Overview
This chapter describes how to connect Cisco T1/E1 high-speed WAN interface cards (HWICs) to a
network. It contains the following sections:
• Cisco T1/E1 HWICs, page 9
• Safety Warnings for Cisco T1/E1 HWICs, page 10
• Cisco T1/E1 HWIC LEDs, page 10
• Connecting a T1/E1 HWIC to a Network, page 12
Cisco T1/E1 HWICs
T1/E1 HWICs provide T1 and E1 support to Cisco 2800 series and Cisco 3800 series integrated services
routers. T1 support has integrated CSU/DSU capability.
The following T1/E1 HWICs are available:
• 1-port channelized
• 2-port channelized
• 4-port clear channel
Supported platforms are:
• Cisco 2811
• Cisco 2821
• Cisco 2851
• Cisco 3825
• Cisco 3845
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