Cisco 7960 User Manual page 64

Safety Notices
Do not work on the system or connect or disconnect cables during periods
Warning
of lightning activity.
To avoid electric shock, do not connect safety extra low voltage (SELV)
Warning
circuits 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 following warnings apply when you use the external power supply with
Warning
the Cisco IP Phone:
This product relies on the building's installation for short-circuit (over
Warning
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).
Warning The device is designed to work with TN power systems.
The Cisco IP Phone 7960 and Cisco IP Phone 7940 are inoperable during a
Caution
power outage if not supported by a UPS (uninterruptible power supply). This
caution applies when you are using either a local transformer or inline power
on the LAN, and might affect your ability to reach 911.
Cisco IP Phone Models 7960 and 7940 User Guide
A-2
Appendix A Safety and Compliance Information
78-10182-05