OSI/MHS Orientation Guide

Glossary
OSI/MHS Orientation Guide—424829-001
Glossary-9
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.
forwarded IPM. An interpersonal message that is enclosed in and being forwarded by
another interpersonal message.
forwarding IPM. An interpersonal message that encloses another interpersonal message,
which is being forwarded.
fully qualified file name. A file specification that includes the volume, subvolume, and file
name ($vol.subvol.filename), possibly preceded by a system name (\system).
gateway. In general, a device or program that connects dissimilar networks at any layer above
the Network Layer, compensating for protocol differences between the networks.
In X.400, a program that integrates a proprietary messaging system with an X.400
network. For example, the GPI and its client together form a gateway.
GATEWAY object. An object type, used in OSI/MHS management interfaces, that defines
and controls the Transfer X400 gateway or a gateway application based on the Gateway
Programmatic Interface (GPI).
GI (gateway interface) class. The OSI/MHS CLASS object that identifies the set of all GI
groups in an OSI/MHS subsystem.
GIP (Gateway Interface Process). The server that moves messages between a proprietary
message system and OSI/MHS. An application, or “client “ uses the GPI library for
access to the GIP.
GPI (Gateway Programmatic Interface). A service that provides X.400 access to proprietary
messaging systems through Compaq OSI/MHS.
GPI library. The GPI procedural interface.
GPI service. The combined function of the GPI library and the GIP.
group. A collection of one or more processes and databases that provide a defined set of
services.
GROUP object. An object type, used in OSI/MHS management interfaces, that identifies a
set of related processes and databases: for instance, a message relay process (MRP), a
reliable transfer service (RTS) process, a PDU store, and a store cleaner (SC) process.
You use a GROUP object to configure, stop, and start the set of processes as a unit.
header. The initial part of a message, which typically contains descriptive information
pertinent to the message as a whole and also possibly control information. In SPI, see
also header token.
header token. In an SPI message, a token that provides information pertaining to the message
as a whole. Examples of header tokens for commands are the command number, the
object type, the maximum-response token, the server-version token, the maximum-field-