D T 7 0 0 S E C U R I T Y F E A T U R E S6-98 DT700 Phone User GuideE R R O R S A N D D E B U G G I N GT L S E R R O R SThe DT700 phone closes the TLS connection and logs an appropriate error onsending 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 cancelledIf any of the above errors are encountered, an error message displays on the phone.The most common error messages are:Table 6.4 TLS ErrorsError Message Cause(s)TLS Bad Certificate. • Bad certificateTLS Certificate Expired. • Certificate expiredTLS Certificate Revoked. • Certificate revokedTLS Decrypt Error. • Signature FailureTLS Handshake Failure. • Handshake failureTLS Internal Error. • Internal error
