Cisco 1601 - Router - EN Hardware Installation Manual page 212

Safety Warnings for Cisco T1/E1 HWICs
Safety Warnings for Cisco T1/E1 HWICs
The following safety warnings apply to installation procedures involving Cisco T1/E1 HWICs.
Translations of these warnings are available in the
Regulatory Compliance and Safety Information
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
Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF
Warning
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
Cisco T1/E1 HWIC LEDs
T1/E1 HWICs have 2 LEDs for each port that indicate the functionality of the T1 or E1 connection.
Figure
4-port HWICs, respectively. The LEDs are described in
Figure 0-138
HWIC-
1CE1T1-PRI
1
3
OL-12851-01
10
0-138, Figure 0-139, and
1-Port T1/E1 HWIC Front Panel
RJ-48C connector
CD/LP LED (bicolor LED)
Cisco Network Modules and Interface Cards
document, which is available online.
Figure 0-140 show the front panels and LEDs on the 1-port, 2-port, and
Table
3 4
1
CD/LP PO AL
2
2
Port number
4 AL LED
T1/E1 High-Speed WAN Interface Cards
0-46.