Displays - Polycom SoundPoint IP 550 User Manual

Displays

Symptom
There is no display.
The display is incorrect.
The display has bad contrast.
The display flickers.
Problem
Power is not correctly applied to
the SoundPoint IP 550 phone.
The contrast needs adjustment.
Outbound or inbound calling is
unsuccessful.
A certain type of older
fluorescent lighting causes the
display to appear to flicker.
Troubleshooting Your SoundPoint
Corrective Action
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.
Do one of the following:
• Refer to Changing the Display
Contrast on page 2-3.
• To obtain a default level of contrast,
restart the phone. (Refer to * on page
*).
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.
Do one of the following:
• Move the SoundPoint IP 550 SIP
phone away from the lights.
• Replace the lights.
®
IP 550 Desktop Phone
5 - 7