OSI/MHS Gateway Programmatic Interface (GPI) Reference Manual

Glossary
OSI/MHS Gateway Programmatic Interface (GPI) Reference Manual—522223-001
Glossary-10
event messaging interface
event messaging interface. In DSM, a management interface that reports significant events
detected by the subsystem.
exception report. In the OSI Session Layer, a report indicating that a problem has occurred
on a connection. Exception reports can be issued by applications and by the service
provider. The severity of the problem varies, as does the corrective action. In some
cases, no recovery action is needed; in others, some recovery action is required; and in
other cases, no programmatic recovery is possible. On receipt of an exception report
indication, either the local or the remote application must initiate an action to clear the
error before either application can initiate any other services.
exporter. In the Transfer X400 gateway, the server that moves messages from the Transfer
environment into the X.400 environment. See also importer.
extended processing. In the GPI, the type of operation requested of an MTA or MTS user by
means of an extension. See also extension.
extensible structure. In DSM programmatic interfaces, a structure declared for the value of
an extensible structured token. See also fixed structure.
extension. In X.400, an element of service that was defined in the 1988 recommendations but
was not present in the 1984 recommendations. Some 1988 extensions are explicitly
supported by the GPI, whereas others are not. Those that are supported are represented
by explicit attributes in the GPI. The extensions that are not explicitly supported by the
GPI are made available as BER-encoded data; GPI objects that include unsupported
extensions contain one or more instances of the MH-C-EXTENSIONS class. See also
BER.
external tracing. The recording of actions taken by a management domain with respect to a
message, probe, or report. See also internal tracing.
extensible structured token. In DSM programmatic interfaces, a token consisting of a token
code and a value that is an extensible structure. Extensible structures can be extended
by adding new fields at the end. Such structures are typically used to indicate the
attributes of an object being operated on and to return status and statistics information in
responses; they can also be used for other purposes. The token is referenced by a token
map that describes the structure to SPI so that SPI can provide compatibility between
different versions of the structure. See also simple token.
file number. An integer that represents a particular instance of an open of a file. A file
number is returned by an OPEN procedure and is used in subsequent I/O procedures to
access the file.
filter. In EMS, a file containing a list of criteria against which incoming event messages can
be evaluated to see if they can pass (all criteria met) or not pass (one or more criteria
failed) through the filter.
fixed structure. In DSM programmatic interfaces, a multifield structure declared for the
value of a simple token. Fields cannot be added to fixed structures. See also extensible
structure.