Audio Issues; Licensed Feature Issues; Upgrading Issues - Polycom CX5500 Administrator's Manual

Polycom CX5500 Unified Conference Station Administrator's Guide
The display is too dark or too light.
The phone contrast may be set incorrectly. To adjust the contrast, do one of the following:

Adjust the contrast (Refer the phone's user guide).

Reboot the phone to obtain the default level of contrast.

Use the screen capture feature to see if the screen displays properly in the capture (see
Phone's Current
The display is flickering.
Certain types of older fluorescent lighting cause the display to flicker. If your phone is in an environment lit with
fluorescent lighting, do one of the following:

Move the CX5500 system away from the lights.

Replace the lights.

Audio Issues

The table Troubleshooting Audio Issues
Troubleshooting Audio Issues
There are audio or echo issues
If you experience echo issues, see
SoundPoint IP Phones.

Licensed Feature Issues

You need a license for XT9 support. You can check your licenses on the device by navigating to Settings
> Status > Licenses.

Upgrading Issues

The table Troubleshooting Software Upgrading Issues
may occur during or after a software upgrade.
Troubleshooting Software Upgrading Issues
Certain settings or features are not working as expected on the phone
The phone's configuration may be incorrect or incompatible. Check for errors on the phone by navigating to
Settings > Status > Platform > Configuration. If there are Errors Found, Unknown Params, or Invalid values,
correct your configuration files and restart the phone.
Polycom, Inc.
Screen).
describes possible solutions to audio issues.
Technical Bulletin 16249: Troubleshooting Audio and Echo Issues on
describes several possible solutions to issues that
1.1.0
Capture the
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