Compaq OSI/FTAM D43, OSI/APLMGR D43 manual Association Control Service Element. See ACSE

Glossary

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.

OSI/FTAM Responder Manual—425199-001

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