Power Information - Cisco 7811 User Manual

Power Information

Cisco cannot guarantee the performance of external devices, cables, and connectors.
Caution In European Union countries, use only external speakers, microphones, and headsets that are fully compliant
with the EMC Directive [89/336/EC].
Power Information
Use an Ethernet cable to connect your phone to your LAN and enable full functionality of your phone. If your
Ethernet port is equipped with Power over Ethernet (PoE), your phone can be powered through the LAN port.
Do not extend the LAN Ethernet cable outside the building.
Phone Behavior During Times of Network Congestion
Anything that degrades network performance can affect Cisco IP Phone voice and video quality, and in some
cases, can cause a call to drop. Sources of network degradation can include, but are not limited to, the following
activities:
• Administrative tasks, such as an internal port scan or security scan
• Attacks that occur on your network, such as a Denial of Service attack
FCC Compliance Statements
The Federal Communications Commission requires compliance statements for the following:
FCC Part 15.21 Statement
Changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
FCC RF Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. End
users must follow the specific operating instructions for satisfying RF exposure compliance. This transmitter
must be at least 20 cm from the user and must not be collocated or operating in conjunction with any other
antenna or transmitter.
FCC Receivers and Class B Digital Statement
This product has been tested and complies with the specifications for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses, and can radiate radio frequency
Cisco IP Phone 7800 Series User Guide
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Product Safety and Security