User guide
Table Of Contents
- Changes to This Guide
- Contents
- Getting Started with Your SoundPoint® IP 650 Desktop Phone
- Customizing Your SoundPoint® IP 650 Desktop Phone
- Configuring Basic Settings
- Changing the Appearance of Time and Date
- Changing the Display Contrast
- Changing the Backlight Intensity
- Enabling the Headset Memory Mode
- Selecting the Correct Headset for Electronic Hookswitch
- Selecting the Ring Type
- Changing the Language
- Changing the Graphic Display Background
- Muting the Microphone
- Adjusting the Volume
- Managing Call Lists
- Managing Contacts
- Managing Incoming Calls
- System Customizations
- Configuring Basic Settings
- Using the Basic Features of Your SoundPoint® IP 650 Desktop Phone
- Using the Advanced Features of Your SoundPoint® IP 650 Desktop Phone
- Using the SoundPoint® IP Backlit Expansion Module
- Troubleshooting Your SoundPoint® IP 650 Desktop Phone
- Regulatory Notices
- Index
Troubleshooting Your SoundPoint
®
IP 650 Desktop Phone
6 - 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 650 phone.
Do one of the following:
• Check that the display 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.
The contrast needs adjustment. 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
*).
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 the dial tone
is present and place a call to another
extension or number. Check that the
display changes in response.
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 650 SIP
phone away from the lights.
• Replace the lights.