PYLE Audio SOUNDPOINT IP 450 ユーザーズマニュアル

 Troubleshooting Your Phone

5 - 7

There is no display.

The display is incorrect.

The display has bad contrast.

Power is not correctly applied to 
the SoundPoint IP 450 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 SoundPoint IP 450 SIP 
phone away from the lights.

Replace the lights.

Use the screen capture feature. 
Contact your system administrator to 
determine if it is enabled.