3-3
Cisco Unified IP Phone 7975G Administration Guide for Cisco Unified Communications Manager 6.0
OL-12642-01
Chapter 3 Setting Up the Cisco Unified IP Phone
Understanding the Cisco Unified IP Phone 7975G Components
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 both use RJ-45 connectors. Use caution when connecting cables.
Caution Inline power circuits provide current over the cable. Use the Cisco provided cable or a minimum 24
AWG communication cable.
The following warnings apply when you use an external power supply.
Caution Only use the proper Cisco approved external power supply. Reference the installation manual provided
with the phone.
Warning
This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that
a fuse or circuit breaker no larger than 120 VAC, 15 A U.S. (240 VAC, 10 A international) is used on the
phase conductors (all current-carrying conductors).
Warning
The device is designed to work with TN power systems.
Warning
The plug-socket combination must be accessible at all times because it serves as the main
disconnecting device.
Understanding the Cisco Unified IP Phone 7975G Components
The Cisco Unified IP Phone 7975G includes these components on the phone or as accessories for the
phone:
• Network and Access Ports, page 3-3
• Handset, page 3-4
• Speakerphone, page 3-4
• Headset, page 3-4
Network and Access Ports
The back of the Cisco Unified IP Phone includes these ports:
• Network port—Labeled 10/100/1000 SW on the Cisco Unified IP Phone 7975G
• Access port—Labeled 10/100/1000 PC on the Cisco Unified IP Phone 7975G
You can use either Category 3 or 5 cabling for 10-Mbps connections, but you must use Category 5 for
100 and 1000 Mbps connections.
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