Polycom SIP 2.2.0 ユーザーズマニュアル

 Troubleshooting Your SoundPoint IP / SoundStation IP Phones

5 - 13

There is no display.

The display is incorrect.

The display has bad contrast.

Power is not correctly applied to 
the SoundPoint IP family SIP 
phone.

Do one of the following:

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.

The contrast needs adjustment.

Do one of the following:

Refer to the appropriate SoundPoint 
IP / SoundStation IP SIP phone User 
Guide.

Reboot the phone to obtain a default 
level of contrast (refer to 

Outbound or inbound calling is 
unsuccessful.

Do one of the following:

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 type of older fluorescent 
lighting causes the display to 
appear to flicker.

Do one of the following:

Move the SoundPoint IP / 
SoundStation IP SIP phone away 
from the lights.

Replace the lights.