Cisco cannot guarantee the performance of external devices, cables, and connectors.
In European Union countries, use only external speakers, microphones, and headsets that are fully compliant
with the EMC Directive [89/336/EC].
Caution
Bluetooth Wireless Headset Performance
Cisco IP Phones support Bluetooth Class 2 technology when the headsets support Bluetooth. Bluetooth enables
low-bandwidth wireless connections within a range of 30 feet (10 meters). The best performance is in the 3-
to 6-foot (1- to 2-meter) range. You can connect up to five headsets, but only the last one connected is used
as the default.
Because of potential interference issues, we recommend that you move 802.11b/g devices, Bluetooth devices,
microwave ovens, and large metal objects away from the wireless headset.
The Bluetooth wireless headset does not need to be within direct line-of-sight of the phone. However, some
barriers, such as walls or doors, and interference from other electronic devices, can affect theconnection.
Ways to Provide Power to Your Phone
You can provide power to your phone in one of these ways:
• Use the power adapter that comes with your phone.
• If your network supports Power over Ethernet (PoE), you can plug your phone into the network. Plug
an Ethernet cable into the Ethernet phone port
and into the network.
If you are not sure whether your network supports PoE, check with your administrator.
Phone Behavior During Times of Network Congestion
• Administrative tasks, such as an internal port scan or security scan
• Attacks that occur on your network, such as a Denial of Service attack
UL Warning
The LAN/Ethernet cable or other cables attached to the device should not be extended outside of the building.
Cisco Video Phone 8875 Documentation
40
Product Safety and Security
Bluetooth Wireless Headset Performance
REVIEW DRAFT - CISCO CONFIDENTIAL
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