OSI/MHS Orientation Guide

Glossary
OSI/MHS Orientation Guide—424829-001
Glossary-21
Port Access Method (PAM)
reserved object. An object on the input queue that the client program has started transferring
in and to which the GPI has assigned an object identifier. A client program can examine
or copy a reserved object (and its attributes) but not modify it.
response. In OSI, see response primitive.
In DSM, the information or confirmation supplied (as part of a response message) to an
application by a subsystem in reaction to a DSM command.
response message. An SPI message sent from a subsystem to an application program in
reaction to a command message. See also command message or event message.
response primitive. In OSI, a primitive issued when a service user wants to respond to an
event. This is one of the four types of service primitives and is used only for confirmed
services. See also service primitive.
response record. In DSM programmatic interfaces, a set of response tokens, usually
describing the results of performing a command on one object. Every response record in
a response from a Compaq subsystem contains a return token; a response record can also
contain error lists that include error tokens. A response can consist of multiple response
records, spread across one or more response messages.
result file. In the P7 API, a file used for retrieving results from the OSI/MHS subsystem. The
file number is returned by a call to the LOS_OPEN_ procedure. See also send file.
return token. In DSM programmatic interfaces, the token that indicates whether a command
was successful and, if not, why it failed. The token code for the return token is ZSPI-
TKN-RETCODE. Its value consists of a single integer field. See also error token.
root object. In the GPI, a message, probe, or report.
ROSE (remote operations service element). An Application Layer service definition and
protocol supporting interactive applications, implemented by the RS process in
OSI/MHS. Examples of ROSE PDUs are:
ROIV-APDUInvoke application protocol data unit
RORJ-PDUReject application protocol data unit
ROER-APDUError application protocol data unit
RORS-APDUResponse application protocol data unit
route. A path through an X.400 system from an originator to a recipient.
ROUTE object. An object type, used in OSI/MHS management interfaces, that defines
routing information to the OSI/MHS subsystem. You use the ROUTE object to define
and inquire about O/R names for addressing adjacent MTAs.
route retry. The action taken when an attempt to deliver a message to an adjacent MTA fails
after all links have been tried and exhausted. Route retry occurs when the subsystem
attempts to deliver the message by an alternate route.
route-selection criteria. The attributes that determine the route the message is to take.