Troubleshooting Your Phone
5 - 7
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 SoundPoint IP 550/560
phone.
Do one of the following:
• Check that the screen is illuminated.
• Make sure the LAN cable is inserted
properly at the back of the phone (try
unplugging and re-inserting the
cable).
• If using Power over Ethernet (PoE),
have your system administrator check
that the switch is supplying power to
the phone.
• Use the screen capture feature.
Contact your system administrator to
determine if it is enabled.
The contrast needs adjustment. Do one of the following:
• Refer to Changing the Display
Contrast on page 2-3.
• Reboot the phone to obtain a default
level of contrast.
• Use the screen capture feature.
Contact your system administrator to
determine if it is enabled.
Outbound or inbound calling is
unsuccessful.
Do one of the following:
• Place a call to the phone under
investigation. Check that the screen
indicates incoming call information.
• Lift the handset. Ensure the dial tone
is present and place a call to another
extension or number. Check that the
screen changes in response.
• Use the screen capture feature.
Contact your system administrator to
determine if it is enabled.
The display flickers. A certain type of older
fluorescent lighting causes the
display to appear to flicker.
Do one of the following:
• Move the for the SoundPoint IP
550/560 SIP phone away from the
lights.
• Replace the lights.
• Use the screen capture feature.
Contact your system administrator to
determine if it is enabled.
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