Polycom CX300 - Manual (Page 12)

Deployment Guide for the Polycom CX300 Desktop Phone
6 Draft 1
Issues When Getting Started With the Phone
The phone is not recognized by the computer.
Check the following:
• The computer displays the message USB Hub Power Exceeded when the
phone is plugged in.
Connect the phone to a different USB port on the computer. Or, connect
the phone to a USB hub that is connected to the computer, and powered
by an external power supply. USB hubs without external power supplies
are not supported by this phone.
• The phone display is blank.
— The phone might not be receiving power. Verify that the USB hub that
the phone is connected to is receiving power from an external power
supply. The USB hub must be turned ON and connected to the
computer that is running Microsoft Office Communicator 2007 R2.
Also check that the other devices connected to the USB hub are
working.
— The phone might have been disconnected and then reconnected too
quickly. Disconnect the phone’s USB plug from the USB port, wait 10
seconds, and then reconnect it.
— The computer to which the phone is connected might have high CPU
utilization, which could slow down the communication with the
phone. Exit any open resource-intensive programs that are currently
not required.
• The computer is in sleep mode.
You cannot use the phone when the computer is in sleep mode.
If the phone still does not recognize the computer it is connected to after you
complete the preceding checklist, try to connect the phone to other USB ports
on the computer or the USB hubs. Also, try to connect the phone to another
computer that you know is working correctly with Microsoft Office
Communicator 2007 R2.