OSI/MHS Gateway Programmatic Interface (GPI) Programming Guide

Glossary
OSI/MHS Gateway Programmatic Interface (GPI) Programming Guide—424822-001
Glossary-23
process
process. A running entity that is managed by the operating system, as opposed to a program,
which is a collection of code and data. A process is a unique execution of a program.
PROCESS object. An object type, used in OSI/MHS management interfaces, that defines a
process to the OSI/MHS subsystem. You use the PROCESS object to trace and monitor
OSI/MHS processes.
programmatic command. In DSM, a command issued by a program rather than by a human
operator. See also interactive command.
programmatic interface. A mechanism by which a program can interact with other software.
programmed operator. In DSM, a management application that performs functions that
might otherwise be performed by a human operator.
protocol. The set of rules governing the format and meaning of the frames, packets, or
messages that are exchanged by the peer entities within a layer. See also service.
PSAP (presentation service access point). A logical location between the Presentation and
Application Layers, through which presentation services are made available to local
users and through which application services are made available to remote systems.
PSEL (presentation selector). An address at the boundary between the Presentation and
Application Layers, through which connections are established and maintained. A
single PSEL can service one or more connections simultaneously and can refer to one or
more presentation service access points (PSAPs).
P-selector. See PSEL.
PTrace. A program that enables you to display trace files. Trace criteria are specified with
SCF.
queue file. In the Transfer X400 gateway, a file in the queue manager that consists of three
logical queues: the ADMIN queue with entries for MR group registration, the
MESSAGE queue with entries for import work, and the EXPORT queue with entries for
export work.
queue manager. A queuing facility that lets Transfer requesters add an entry and retrieve an
entry from a queue for processing. The queue manager can be used independently of
Transfer; it is automatically installed when you configure the Transfer X400 gateway
and is also required for gateways using the Gateway Programmatic Interface (GPI).
reason code. A value indicating why a message could not be delivered (called a
“non-delivery-reason-code,” in the X.411 standard).
receipt notification. Indicates to the sender of a message that the message was received and
read by the intended recipient.
$RECEIVE. The name of a special file through which a process receives and optionally
replies to messages from other processes.