Compaq OSI/FTAM D43 manual root node. The first-level node in a hierarchical file. See root FADU

Glossary

required parameter. (1) In a protocol data unit (PDU), a parameter that is always present. (2) In a Compaq programmatic or interactive interface, a parameter to a procedure (for example, a procedure in the FTAM API) or to an interactive command (such as an SCF command) that must be specified when the procedure is called or the command is issued. Contrast with conditional parameter and optional parameter.

reset time. In SCF, the date and time that the statistical counters for an object were last reset. The STATS command for the object displays the reset time.

responder. The file-service user that accepts an initiator’s request to establish an FTAM regime. In Compaq FTAM, the responder is a process that services FTAM requests initiated from remote systems on an OSI network. The Compaq responder acts as an FTAM file server, mapping FTAM requests into Guardian file operations and providing a translation between Guardian file structures and FTAM file structures. The Compaq responder has no programmatic interface. Contrast with initiator.

responding address. The OSI address of the responder that responds to an association request from an initiator in an FTAM application. Contrast with called address and calling address.

responding user. The responder that responds to an association request from an initiator in an FTAM application. Contrast with called address and calling address.

response primitive. A primitive issued when a service user (entity) wants to respond to an event (for confirmed services only). This is one of four types of service primitives. See service primitive.

response procedure. A procedure called by your application to send response primitives to indications from the FTAM responder. See response primitive.

restart-data-transfer functional unit. An ISO FTAM functional unit that allows the transfer of data to be interrupted and immediately restarted in a current transfer.

reverse traversal. Traversal through the nodes of an FTAM file in reverse order (last to first).

root FADU. The first-level FADU in an FTAM file. In the case of FTAM-1 and FTAM-3 files, the complete file is one FADU and so can be considered the root FADU. FTAM-2 files consist of two levels of FADUs in a hierarchical structure. The root FADU provides access to the complete file. See FADU.

root node. The first-level node in a hierarchical file. See root FADU.

Safeguard. The Compaq system-software security package that implements three security features: user authentication, object-access authorization, and auditing.

sample time. In SCF, the date and time that the currently displayed statistics for an object were gathered. The sample time is displayed by the STATS command along with the statistics.

SAP (service access point). The point at which an implementation of a given OSI layer provides its services to an implementation of the layer above it. The SAP is highly system-dependent and generally refers to the way interlayer communication is accomplished.

OSI/FTAM Responder Manual—425199-001

Glossary-21