Cisco 7910 Series Getting Started Manual - Page 12
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Safety Notices
Read the installation instructions before you connect the system to its power
Warning
source.
Warning
Ultimate disposal of this product should be handled according to all national
laws and regulations.
Do not work on the system or connect or disconnect cables during periods of
Warning
lightning activity.
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 use RJ-45
connectors. Use caution when connecting cables.
The next warning applies when you use an external power supply.
Warning
This product relies on the building's installation for short-circuit (over current)
protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S.
(240 VAC, 10A international) is used on the phase conductors (all
current-carrying conductors).
The device is designed to work with TN power systems.
Warning
Getting Started with the Cisco IP Phone 7910 Series
2-2
Chapter 2
Installing the Cisco IP Phone 7910 Series
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