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User Guide Polycom CX400 Cordless Phone
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To restart the phone:
¾ Remove and replace the battery. Unplug the phone from the computer,
then plug it back in.
The restart process will begin.
Upgrading Your Phone’s Firmware
Your Polycom CX400 cordless phone handset and cradle contain firmware
that implements the phone's functionality. From time to time, Polycom may
provide updated firmware that will enhance the operation of your phone. You
or your system administrator may elect to perform the task of upgrading your
phone’s firmware.
A special cable will be needed to upgrade firmware on the handset. This cable,
along with upgrade instructions, will be made available in a Firmware
Upgrade Kit that may be purchased separately. If a firmware upgrade
becomes necessary, Polycom will make upgrade kits available. All
information will be provided by Polycom Technical Support at
http://www.polycom.com/support/voice/.