OSI/MHS Gateway Programmatic Interface (GPI) Reference Manual
Glossary
OSI/MHS Gateway Programmatic Interface (GPI) Reference Manual—522223-001
Glossary-12
header
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-version token, and the checksum token. Command and response 
messages contain a specified set of header tokens; event messages, a different set with 
some overlap. See also SPI message. 
importer. In the Transfer X400 gateway, the server that moves messages from the X.400 
network into the Transfer environment. See also exporter.
inbound communication. A communication received from the X.400 network and available 
to a client. See also outbound communication.
indication primitive. In OSI, a primitive issued when a service user is to be informed about 
an event.  This is one of four types of service primitives. See also service primitive.
input queue. A queue on which the GPI service places messages, probes, and reports 
received from the X.400 network to be accessed by a client gateway application.
Install program. The Compaq program that installs new or updated software on the system 
from SUT tapes and creates the ISVs. 
installation file. The file created through the OSI/MHS installation procedure that contains 
the volume and subvolume locations for objects, the security classifications, and the 
installation steps.
installation procedure. The OSI/MHS procedure that creates a default edit file and prompts 
you to modify that file to fit your configuration requirements.
installation subvolume. See ISV.
interactive command. In DSM, a command given by a human operator rather than by a 
program. See also programmatic command.
interface. In general, a set of rules by which a person, a program, or a device interacts with a 
hardware or software product.
In OSI, a set of rules by which a given layer passes information to the adjoining layer 
below or above.
internal tracing. The recording of actions taken by an MTA with respect to a message, 
probe, or report. See also external tracing.
International Telegraph and Telephone Consultative Committee. See CCITT.
interpersonal message (IPM). See IPM.










