| There is no display. The display is incorrect. The display has bad contrast. |
Power is not correctly applied to the SoundPoint IP 650 SIP phone. |
Do one of the following steps:
- Check that the display is illuminated.
- Make sure the LAN cable is inserted properly at the rear of the phone (try unplugging and re-inserting the cable).
- If using in-line powering, have your system administrator check that the switch is supplying power to the phone.
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| There is no display. The display is incorrect. The display has bad contrast. |
The contrast needs adjustment. |
Do one of the following steps:
- Refer to the article on Display Contrast.
- Reboot the phone to obtain a default level of contrast. Refer to the article on Restarting your phone.
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| There is no display. The display is incorrect. The display has bad contrast. |
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.
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| The display is flickering. |
Certain type of older fluorescent lighting causes the display to appear to flicker. |
Do one of the following steps:
- Move the SoundPoint IP 650 SIP phone away from the lights.
- Replace the lights.
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