This type is not a standard SMI/SNMP base type and is not defined as a documented TEXTUAL-CONVENTION in this MIB.
It was extracted as raw syntax from the source MIB file and could not be resolved to a known type definition.
Indicates the reason that the last connection or call attempt
disconnected. The meaning of each reason code is explained
below:
unknown: the failure reason is unknown or there has been
no previous call.
lostCarrier: the call was disconnected because the loss
of carrier.
noCarrier: the dial out attempt has failed because the
modem detects no carrier.
noDialTone: the dial out attempt has failed because the
modem failed to detect a dial tone.
busy: the call attempt failed because the modem detected
a busy signal.
modemWatchdogTimeout: the modem internal watchdog timer
has expired.
dtrDrop: DTR has been turned off while the modem is to
disconnect on DTR drop.
userHangup: normal disconnect where the user hangs up call.
compressionProblem: the call is disconnected due to a
problem detected during compression in the modem.
retrainFailure: the modem did not successfully train and
reach data mode on the previous connections.
remoteLinkDisconnect: the remote link disconnected the
connection.
abort: the call was aborted.
inactivityTimeout: the modem automatically hangs up because
data is not sent or received within the inactivity time out.
dialStringError: the dialed phone number is invalid.
linkFailure: the modem detects a link failure.
modulationError: the modem detects a modulation error.
dialTimeout: the modem times out while attempting to dial.
remoteHangup: the remote side hangs up the connection.
mnp10ProtocolError: MNP10 Protocol Error.
lapmProtocolError: LAPM Protocol Error.
faxClass2Error: Fax Class 2 Error.
trainupFailure: failure to trainup with a remote peer.
fallbackTerminate: User has EC fallback set to disconnect.
excessiveEC: Link loss due to excessive EC retransmissions.
EC packet transmit limit exceeded.
hostDrop: Host initiated link drop.
terminate: Lost Carrier Microcom HDMS product relating to
password security issues.
autoLogonError: An autologon sequence did not complete
successfully.
ccpNotSeen: The Credit Card Prompt was not detected.
callbackFailed: Applies to leased line connection. If after
a switched line dialback due to a leased line connection
failure, the switched line connection also fails and a
connection can still not be made on the leased line, a
disconnect occurs with this reason set.
blacklist: In coutries that support blacklisting, an attempt
was made to go off hook with a null dial string (ATD).
lapmTimeout: Timed out waiting for a reply from remote.
reliableLinkTxTimeout: Have not received the
link acknowledgement in the first 30 seconds of the
connection.
dspAccessFailure: Timed out trying to access the
DSP chip.
cdOffTimeout: Timed out waiting for carrier to return
after a retrain or rate renegotiation.
codewordSizeMismatch: The codeword size are mismatched.
dspDownloadFailure: Error during the DSP code download.
The time taken to recover and repeat the download
would take too long to complete the handshake.