Cisco 7960G Phone Manual page 18

Warning Read the installation instructions before you connect the system to its power source.
Warning Ultimate disposal of this product should be handled according to all national laws and
regulations.
Warning Do not work on the system or connect or disconnect cables during periods of lightning
activity.
Warning To avoid electric shock, do not connect safety extra low voltage (SELV) 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.
Inline power circuits provide current through the communication cable. Use the Cisco
Caution
provided cable or a minimum 24 AWG communication cable.
Using an External Power Supply
The following warnings apply when you use the external power supply with the
Cisco Unified IP Phone:
10 OL-8498-02