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Glossary
OSI/FTAM Responder Manual—425199-001
Glossary-3
ASN.1 (Abstract Syntax Notation-1). The type and value syntax or notation language
for representing semantics of protocol that is described in ISO 8824. The Basic
Encoding Rules (ISO 8825) standard defines a set of encoding rules that can be applied
to values of types defined using the notation specified in ISO 8824. See also abstract
syntax.
association. A connection between Application Layer entities. See connection.
Association Control Service Element. See ACSE.
attach. An operation performed by a Compaq OSI subsystem, on behalf of an
application, to wait for an incoming associate or connect indication from a remote entity.
attribute. An identifiable characteristic of an object. For example, two attributes of an
FTAM file are its name and its date and time of creation. In DSM, two attributes of a
process are the location of its code file and its execution priority. See also file attributes
and activity attributes.
attribute group. One of the four groups of file attributes defined by ISO FTAM. They
are the kernel group, which must be supported by all FTAM implementations; the
security group and the storage group, which are negotiated during association
establishment; and the private-use group, which is also negotiated but whose definition
is outside the scope of ISO FTAM.
backup CPU. The central processing unit (CPU) number of the Compaq processor on
which the backup process will run. See backup process.
backup opener. The backup process that has an open to an FTAM initiator or responder
process. See backup process.
backup process. In a Compaq NonStop system, a process that is identical to the primary
process and is created at the same time as the primary process. These two processes act
as a NonStop process pair. The backup process takes over if the primary process fails.
See primary process.
basic data types. First-level and second-level DDL data types, which can either stand
alone as data types or be used to create higher-level DDL structures.
called address. The OSI address of the responder called by the initiator that supports an
FTAM application. Contrast with calling address and responding address.
calling address. The OSI address of the initiator that calls a responder in an FTAM
application. Contrast with called address and responding address.
calling user. The initiator that calls a responder in an FTAM application. Contrast with
responding user.
CEPI (connection endpoint identifier). An internally generated identification code
used to track associations. In Compaq FTAM, an identifier of a connection endpoint for
a given FTAM association. Use of the CEPI for an association allows transfer of
information to a remote FTAM entity.
checkpoint. On a Compaq NonStop system, a snapshot of process activity that can be
used in the event of a takeover to allow a backup process to maintain fault-tolerant
operation. See backup process.