Cisco 836 Hardware Installation Manual page 27

Chapter 2 Installation
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.
During this procedure, wear grounding wrist straps to avoid ESD damage. Do
Warning
not directly touch the backplane during with your hand or any metal tool, or you
could shock yourself.
This equipment is not designed for making emergency telephony calls when the
Warning
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.
To reduce the risk of fire, use only No.26 AWG or large telecommunication line
Warning
cord.
This equipment contains a ring signal generator (ringer), which is a source of
Warning
hazardous voltage. Do not touch the RJ-11 (phone) port wires (conductors), the
conductors of a cable connected to the RJ-11 port, or the associated
circuit-board when the ringer is active. The ringer is activated by an incoming
call.
Ths ISDN connection is regarded as a source of voltage that should be
Warning
inaccessible to user contact. Do not attempt to tamper with or open any public
telephone operator (PTO)-provided equipment or connection hardware. Any
hardwired connection (other than by a nonremovable, connect-one-time-only
plug) must be made only by PTO staff or suitably trained engineers.
78-15281-02
Cisco 836 Router and SOHO 96 Router Hardware Installation Guide
Preparing for Installation
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