NEC DT900 Series - TLS Errors

5-58 DT900/DT900S Series Phone User Guide
ERRORS AND DEBUGGING
TLS ERRORS
The phone closes the TLS connection and logs an appropriate error on sending or
receiving any of the following fatal alert messages defined in RFC 2246.
• Close notify
• Unexpected message
• Bad record mac
• Decryption failed
• Record overflow
• Decompression failure
• Handshake failure
• Bad certificate
• Unsupported certificate
• Certificate revoked
• Certificate expired
• Certificate unknown
• Illegal parameter
• Unknown CA
• Access denied
• Decode error
• Decrypt error
• Export restriction
• Protocol version
• Insufficient security
• Internal error
• User canceled
If any of the above errors are encountered, an error message displays on the phone.
The most common error messages are:
Table 5.4 TLS Errors
Error Message Cause(s)
TLS Bad Certificate. • Bad certificate
TLS Certificate Expired. • Certificate expired
TLS Certificate Revoked. • Certificate revoked
TLS Decrypt Error. • Signature Failure
TLS Handshake Failure. • Handshake failure
TLS Internal Error. • Internal error