![Cisco 8865 Administration Manual Download Page 39](http://html.mh-extra.com/html/cisco/8865/8865_administration-manual_64086039.webp)
•
Move the external device away from the source of the RF or AF signals.
•
Route the external device cables away from the source of the RF or AF signals.
•
Use shielded cables for the external device, or use cables with a better shield and connector.
•
Shorten the length of the external device cable.
•
Apply ferrites or other such devices on the cables for the external device.
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
USB Port Information
The Cisco IP Phones 8851, 8851NR, 8861, 8865, and 8865NR support a maximum of five devices that connect
to each USB port. Each device that connects to the phone is included in the maximum device count. For
example, your phone can support five USB devices on the side port and five more standard USB devices on
the back port. Many third-party USB products count as multiple USB devices; for example, a device containing
a USB hub and headset can count as two USB devices. For more information, see the USB device
documentation.
Note
•
Unpowered hubs are not supported, and powered hubs with more than four ports are not supported.
•
USB headsets that connect to the phone through a USB hub are not supported.
Each key expansion module connects to the phone counts as a USB device. If three key expansion modules
are connected to the phone, these count as three USB devices.
Phone Configuration Files
Configuration files for a phone are stored on the TFTP server and define parameters for connecting to Cisco
Unified Communications Manager. In general, any time you make a change in Cisco Unified Communications
Manager that requires the phone to be reset, a change is automatically made to the phone configuration file.
Configuration files also contain information about which image load the phone should be running. If this
image load differs from the one currently loaded on a phone, the phone contacts the TFTP server to request
the required load files.
If you configure security-related settings in Cisco Unified Communications Manager Administration, the
phone configuration file will contain sensitive information. To ensure the privacy of a configuration file, you
must configure it for encryption. For more information, see the documentation for your particular Cisco
Unified Communications Manager release. A phone requests a configuration file whenever it resets and
registers with Cisco Unified Communications Manager.
A phone accesses a default configuration file named XmlDefault.cnf.xml from the TFTP server when the
following conditions exist:
Cisco IP Phone 8800 Series Administration Guide for Cisco Unified Communications Manager
21
USB Port Information
Summary of Contents for 8865
Page 23: ...P A R T I About the Cisco IP Phone Technical Details page 7 Cisco IP Phone Hardware page 23 ...
Page 24: ......
Page 54: ......
Page 100: ......
Page 218: ......