C H A P T E R
38-1
Cisco Network Modules Hardware Installation Guide
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Connecting 8-Port T1/E1 Network Modules
This chapter describes how to connect 8-port T1/E1 network modules for Cisco integrated service
routers. It contains the following sections:
•
Cisco T1/E1 Network Module, page 38-1
•
Safety Warnings for the Cisco T1/E1 Network Module, page 38-1
•
Cisco T1/E1 Network Module LEDs, page 38-2
•
Connecting a T1/E1 Network Module to a Network, page 38-3
Cisco T1/E1 Network Module
The Cisco T1/E1 network module provides 8 ports of clear channel or channelized T1 and E1 support to
Cisco 3800 series integrated services routers:
•
Cisco 3825
•
Cisco 3845
T1 support has integrated CSU/DSU capability.
Safety Warnings for the Cisco T1/E1 Network Module
The following safety warnings apply to installation procedures involving the Cisco T1/E1 network
module. Translations of these warnings are available in the
Cisco Network Modules and Interface Cards
Regulatory Compliance and Safety Information
document, which is available online.
Warning
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some
LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.
Statement 1021
Warning
Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF
or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables,
detach the end away from the unit first.
Statement 1026