device uses a shared key authentication and
encryption method to connect with Bluetooth headsets. The
device can connect with up to five headsets at a time. The last connected headset is used as the default. Pairing is typically performed once for
After a device is paired, the Bluetooth connection is
maintained as long as both the device and headset are enabled and within
range of each other. The connection typically reestablishes itself
automatically if either of the devices powers down then powers up. However,
some headsets require user action to reestablish the connection.
Wideband for Bluetooth headsets is not supported. Voice quality may be reduced when using Bluetooth headsets.
The best performance is in the 3- to 6-foot range (1 to 2 meters). You can pair five or more headsets, but only the last headset that was connected is used as the default. When headsets are more than 30 feet (10 meters) away from the
device, Bluetooth drops the connection after a 15- to 20-second
timeout. If the paired headset comes back into device range and the device is not connected to another Bluetooth headset,
the in-range Bluetooth headset automatically reconnects. For certain devices that operate in power-save modes, the user can
tap the operational button to
initiate the reconnection and wake up the headset.
Potential interference issues can occur. Cisco recommends that you reduce the proximity of other 802.11b/g devices, Bluetooth devices, microwave ovens, and large metal objects. If possible, configure other 802.11 devices to use the 802.11a channels.
For a Bluetooth wireless headset to work, the headset does not need to be within direct line-of-sight of the device, but some barriers, such as walls or doors, as well as interference from other electronic devices, can affect the connection.
For more information about Bluetooth headsets, see the user guide that is provided with the headset.