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Chapter 2
Preparing for Installation
Network hazardous voltages are present in the T1 PRI cable. If you detach the cable, detach the end
Warning
away from the router first to avoid possible electric shock. Network hazardous voltages are also
present in the area of the T1 PRI (RJ-48C) ports, regardless of whether power is off or on.
The telecommunications lines must be disconnected 1) before unplugging the main power connector
Warning
or 2) while the housing is open.
Warning
Hazardous network voltages are present in WAN ports regardless of whether power to the router is
OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching
cables, detach the end away from the router first.
Warning
To reduce the risk of electric shock when servicing any individual unit, disconnect the power cord or
cords that connect the unit to the AC powerstrip or DC busbar. When working with a DC system,
remove the busbar connector before working on a device. Exposed live voltages are present at the
device end; exposure to these may cause injury.
Warning
A voltage mismatch can cause equipment damage and may pose a fire hazard. If the voltage indicated
on the label is different from the power outlet voltage, do not connect the chassis to that receptacle.
To prevent bodily injury when mounting or servicing this unit in a rack, you must take special
Warning
precautions to ensure that the system remains stable. The following guidelines are provided to ensure
your safety:
—This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
—When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the
heaviest component at the bottom of the rack.
—If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing
the unit in the rack.
The ports labeled "Ethernet," "10BaseT," "Token Ring," "Console," and "AUX" are safety extra-low
Warning
voltage (SELV) circuits. SELV circuits should only be connected to other SELV circuits. Because the
BRI circuits are treated like telephone-network voltage, avoid connecting the SELV circuit to the
telephone network voltage (TNV) circuits.
Ethernet cables must be shielded when used in a central office environment.
Warning
OL-2365-02
Safety Requirements
Cisco 6260 Hardware Installation Guide
2-5
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