Avaya DECT R4 Installation And Administration Manual page 692

Troubleshooting
Software in Device Not Recognized/Synchronization Fails
A device might have software with a parameter set that is newer than the version recognized by
the PDM. The PDM will then be unable to send parameters to the device. The icon (a red
broken arrow) in the Parameters column for the selected device indicates that the
synchronization between the device and the PDM was not successful.
If this is the case, the PDM should be updated with new software and definition files provided by
your local supplier. See Import Parameter Definition Files on page 348.
Software Upgrade Fails
Verify device is still online. Handset needs to be plugged into the Advanced Charger or
Rackmount Charger. Chargers need to be connected via USB to the PC. If device is still online
try to restart the software upgrade again.
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Avaya DECT R4 - Installation and Maintenance Guide 02/2016