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User Guide for the Polycom CX700 IP Phone
4 - 8
Displays
Symptom Problem Corrective Action
There is no display.
The display is incorrect.
The display has bad contrast.
Power is not correctly applied to
the Polycom CX700 IP phone.
Do one of the following steps:
• Check that the display is illuminated.
• Make sure the LAN cable is inserted
properly at the side of the phone (try
unplugging and re-inserting the
cable).
• If using PoE, have your system
administrator check that the switch is
supplying power to the phone.
The contrast needs adjustment. Do one of the following steps:
• Refer to Adjusting Display Brightness
on page 2-7.
• Reboot the phone to obtain a default
level of contrast (refer to Updating
Configuration on page 4-17).
Outbound or inbound calling is
unsuccessful.
Do one of the following steps:
• Place a call to the phone under
investigation. Check that the display
indicates incoming call information.
• Lift the handset. Ensure dial tone is
present and place a call to another
extension or number. Check that the
display changes in response.
The display is flickering. Certain types of older fluorescent
lighting may cause the display to
appear to flicker.
Do one of the following steps:
• Move the Polycom CX700 IP phone
away from the lights.
• Replace the lights.