Cisco Router 831 Hardware Installation Manual page 27

Chapter 2 Installation
The ports labeled "10BaseT", 100BaseTX", and "10/100" are safety extra-low
Warning
voltage (SELV) circuits. SELV circuits should only be connected to other SELV
circuits. Avoid connecting these circuits to telephone network voltage (TNV)
circuits.
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits
Warning
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.
Warning Do not work on the system or connect or disconnect cables during periods of
lightning activity.
Warning This equipment is not designed for making emergency telephony calls when the
power fails. Alternative arrangements should be made for access to emergency
services. Access to emergency services can be affected by any call-barring
function of this equipment.
If the symbol of suitability with an overlaid cross (
Warning
must not connect the port to a public network that follows the European Union
standards. Connecting the port to this type of public network can cause severe
injury or damage your router.
Before working on a system that has a standby/off switch, turn off the power by
Warning
pressing the power switch to standby and unplug the power cord.
Ultimate disposal of this product should be handled according to all national
Warning
laws and regulations.
78-14784-02
Cisco 831 Router and SOHO 91 Router Hardware Installation Guide
Preparing for Installation
) appears above a port, you
2-3