Glossary
SCF (Subsystem Control Facility). A utility that provides a common, interactive management interface for configuring, controlling, and collecting information from Compaq data communications products.
SCP (Subsystem Control Point). The process used to provide the focal point for all Compaq data communications subsystems. There can be several instances of this process. Applications using SPI send all commands for data communications subsystems to an instance of this process, which in turn sends the commands on to the manager processes of the target subsystems. SCP also processes a few commands itself. It provides security features, version compatibility, support for tracing, and support for applications implemented as NonStop process pairs.
security group. File attributes that pertain to security and access control. These attributes are negotiated at association establishment. The security group attributes are access control and legal qualifications.
sender. The entity that initiates and sends a communication to a remote receiver. See receiver.
sensitive command. An SCF command that can be issued only by a restricted set of Guardian users, such as process owners and
sequential flat file. An unstructured file whose data must be accessed sequentially.
service. The functions and features provided by a given layer to the layer above it in the OSI Reference Model. Also, the functions and features provided to the application programmer by the Compaq FTAM process. See also protocol.
service class. A set of functional units negotiated at association establishment. ISO FTAM specifies five levels of service classes.
service ID. A value identifying the Compaq OSI service that is the source of an error condition being reported. The APS_STATUS_ procedure returns service ID values in the
service primitive. An abstract,
service provider. An entity that provides services for a
OSI/FTAM Responder
