OSI/FTAM Programming Guide

Glossary
HP NonStop OSI/FTAM Programming Guide—528612-001
Glossary-2
API (application programmatic interface).
API (application programmatic interface). A mechanism by which an application program
interfaces with another piece of software. For NonStop FTAM, the API consists of FTM,
APS, and MFM procedures used in FTAM programming. The NonStop FTAM API also
includes the data definitions provided in the ZFTMDDL file and all language-specific
files derived from ZFTMDDL. See also APS procedures, FTM procedures., and MFM
(module file management) procedures.
APLMGR (NonStop OSI/Application Manager). The NonStop subsystem that performs
management functions for NonStop FTAM. The APLMGR subsystem consists of two
entities: the APLMGR process and the management information base (MIB). There is
only one APLMGR per FTAM subsystem.
application. A user program that uses services provided by products such as NonStop
FTAM. The program accesses layers of the OSI Reference Model through the top layer
(Application Layer) to manipulate files on remote computer systems. For NonStop
FTAM, applications can be written in C or TAL.
application entity. The part of an application process that interacts with its peer entity in a
remote application process. In an OSI application, the application entity is the part that
represents the communication functionality necessary for interoperation.
application entity title (AE title). The structured identifier that identifies an application
entity to the OSI network. The AE title is passed as a parameter in the ACSE
A-ASSOCIATE request and returned in the A-ASSOCIATE response. See application
entity.
Application Layer. Layer 7 of the OSI Reference Model. This layer provides the interface
between user programs (application processes) and the OSI network. Layer 7 includes
the standards for services such as file transfer, electronic mail, and terminal access.
Application Manager. See APLMGR (NonStop OSI/Application Manager).
application name. The NonStop OSI/AS term for a reference name used to look up an OSI
address in the local OSI/AS management information base (MIB). In NonStop FTAM
terminology, this name is called the common name. See common name.
application programmatic interface. See API (application programmatic interface).
application service element. See ASE (application service element).
APS (application, presentation, and session) procedures. A set of procedure calls,
provided by NonStop as part of the OSI/AS subsystem, providing application programs
with access to the services of ACSE (in the Application Layer), the Presentation Layer,
and the Session Layer. The names of the APS procedures all begin with the letters
APS. The APS procedures are defined in the EXTDECS0 and CEXTDECS files. The
APS procedures, together with the definitions in the ZAPSDDL file, constitute the
OSI/AS API. A subset of the APS procedures is accessible from, and must be used
with, the FTAM API. See also API (application programmatic interface).