Cisco cannot guarantee the performance of the system because Cisco has no control over the quality of external
devices, cables, and connectors. The system will perform adequately when suitable devices are attached using
good-quality 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
Headset safety
When using a headset, set the volume to a safe level. Permanent hearing loss or damage may occur if headsets
are used at high volume.
Do not use a headset at high volume to block out other noise. Lower the volume if you cannot hear people
speaking near you.
If you experience ringing in your ears, muffled voices, or other signs of hearing loss or damage, stop using
your headset and have your hearing checked.
Avoid using a headset while operating a vehicle. Using a headset while operating a vehicle can be distracting
and dangerous, and is illegal in some areas. Likewise, avoid using a headset while performing any activity
that requires your undivided attention.
Bluetooth wireless headset performance
Cisco DX650 supports 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 there can be potential interference issues, it is recommended that you move 802.11b/g devices,
Bluetooth devices, microwave ovens, and large metal objects away from the wireless headset.
For a Bluetooth wireless headset to work, it does not need to be within direct line-of-sight of the phone. Some
barriers, such as walls or doors, and interference from other electronic devices can affect the Bluetooth
connection.
FCC compliance statements
The Federal Communications Commission requires compliance statements for the following:
•
FCC Part 15.21
•
FCC Receivers and Class B Digital
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.
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Product safety, security, accessibility, and related information
Headset safety
