NEC DT900 Series User Manual page 79

DT900/DT900S Series Phone User Guide
Error Message
TLS Unknown CA.
TLS Unknown Certificate.
TLS Unsupported Cert.
8 0 2 . 1 X S T A T U S & D E B U G G I N G M E S S A G E S
The current 802.1X status of the phone is displayed on the Network Information
status screen (Menu\Status\Network Information).
If 802.1X status enabled, the phone displays the current Authentication state as
"Authenticated", "Held" or "Connecting".
Cause(s)
• Unknown CA
• Certificate unknown
• Unsupported certificate
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