Cisco IP Phone 8851 has only one USB port, the side USB port.
Note
If you use a USB hub and remove the USB cable from the phone during an active call, your phone might
restart.
Related Topics
The Cisco IP Phone 8800 Series, on page 1
Mobile Device Charging
You can use the USB ports on your phone to charge your mobile device if the device has a USB connection.
The following ports support USB charging:
Your phone continues to charge the mobile device while it is in power saving mode.
When you use your phone to charge your mobile device, the following conditions apply:
• A short delay may occur before charging begins.
• In some situations, your device will not display the charging icon. For example, the icon may not display
when the device is fully charged.
• When more than one Cisco IP Phone 8800 Key Expansion Module is attached to your phone, the back
USB port cannot fast-charge the device.
If you unplug your tablet and immediately plug in a USB headset to the phone, a 3-second delay occurs before
the phone recognizes the USB headset.
If your administrator disables the back or side USB port, the disabled USB port stops working and will not
charge the connected device. If you want to use the USB ports, contact your administrator.
Related Topics
Energy Savings, on page 30
Bluetooth and Your Phone
Bluetooth is supported on Cisco IP Phone 8851 and 8861.
If your phone supports Bluetooth, use a Bluetooth headset and connect your mobile phone or tablet to the
phone.
Bluetooth connections work best when you're within 3 to 6 feet (1 to 2 meters) from your phone, but you
might be able to be as far away as 66 feet (20 meters). The Bluetooth connection can degrade if you have a
barrier (wall, door, window), large metal object, or other electronic devices between your phone and the
connected device.
To connect a mobile device or headset to your phone with Bluetooth, start by pairing the device with your
phone. You can pair up to three devices. If you try to pair more than three devices, you are prompted to delete
one device.
After the headset or mobile device is paired, the phone connects to the headset or mobile device when the
headset or mobile device is turned on.
Cisco IP Phone 8800 Series Multiplatform Phones User Guide
29
Your Phone
Mobile Device Charging
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