o  connection failed

    Generated when a connection cannot be established.

    Arguments:

    call accept      Error returned when attempting to accept the
    reason           incoming call. This argument is present only
                     if Reason is Call Accept Failure.

                             cleared by directive
                             invalid parameter
                             no such port
                             service not available

    destination    DTE address of the called DTE.
    DTE

    destination    Called Address Extension supplied in the Call packet.
    nsap

    outgoing       Error returned when attempting to make the outgoing
    failure        call. This argument is present only if Reason is
    reason         Outgoing Call Failure.

                           called address not reachable
                           cleared by directive
                           destination not known
                           DTE class members not active
                           DTE class not known
                           DTE class not specified
                           incompatible reserved lcn
                           invalid parameter
                           no such port
                           no such template
                           security failure
                           service not available
                           transit not allowed

    reason         Whether the connection failed at the incoming or
                   outgoing stage.

                     call accept    The client could not accept the
                     failure        incoming call.

                     outgoing       The client could not make the
                     call failure   outgoing call.

    sending       DTE address of the calling DTE.
    DTE

    sending       Calling Address Extension supplied in the Call
    nsap          packet.

 o  connection lost

    Generated when a connection that has been successfully etablished
    is abnormally terminated.

    Arguments:

    cause        X.25 cause code provided by the clearing DTE. Only
                 present if the Reason argument is Calling DTE Clear
                 or Called DTE Clear.

    destination  DTE address of the called DTE.
    DTE

    destination  Called Address Extension supplied in the Call packet.
    nsap

    diagnostic   X.25 diagnostic code provided by the clearing DTE.
                 Only present if the Reason argument is Calling DTE
                 Clear or Called DTE Clear.

    network      Reason why the connection was lost. This argument is
    error        present only if reason is network error.
    reason

    reason       Reason for the loss of the connection.
                 calling      The local call was abnormally
                 DTE clear    terminated.
                 network      The cause of the connection loss is
                 error        given by network error reason.
                 called DTE   The remote call was abnormally
                 clear        terminated.

    sending      Specifies the DTE address of the calling DTE.
    DTE

    sending      Specifies the Calling Address Extension supplied in
    nsap         the Call packet.