OSI/MHS Configuration and Management Manual

OSI/MHS Configuration and Management Manual—424827-003
Glossary-13
exchange of goods and services and to develop mutual cooperation in areas of
intellectual, scientific, technological, and economic activity.
ISO Reference Model for Open Systems Interconnection. See OSI Reference Model.
ISV (installation subvolume). A subvolume produced from the SUT during the Install
process. The Install process creates many ISVs. The ISV named ZOSIMHS contains
all of the OSI/MHS object files (MTA, RTS, SC, MS, RS, GI, LO, and MHSMGR),
softdocs, and installation macros.
LAN. A local area network. See also TLAM.
layer. A grouping of related functions in the OSI Reference Model. See Application Layer,
Data Link Layer, Network Layer, Physical Layer, Presentation Layer, Session Layer, or
Transport Layer.
link. A physical and logical path between two adjacent computers or other devices.
In OSI/MHS, a pair of OSI addresses that are configured for each MTA. A pair of OSI
addresses is a set of local and remote address definitions in the MTA object
representing an adjacent MTA.
link retry. The action taken when a line to an adjacent MTA fails or is unavailable. All other
links to that MTA are tried. You set the time available to establish the association
through the CLASS attribute LINK-RETRY-TIME. You set the time to wait before an
MR group can retry the previously failed association through the CLASS attribute
LINK-RETRY-DELAY.
LO (local operations) class. The OSI/MHS CLASS object that identifies the set of all LO
groups in an OSI/MHS subsystem.
LO (local operations) group. The OSI/MHS group that implements the local operations
function, giving local user agents access to an X.400 network through a message
store. The LO group consists of a single LO process and a PDU store. There can be
zero, one, or more LO groups in a single OSI/MHS subsystem. There must be at least
one LO group for the P7 API to connect with OSI/MHS.
LO (local operations) process. The process in the LO group that provides local functions
analogous those of the Remote Operations Service Element (ROSE) defined in OSI.
The LO process manages associations from local client applications and creates PDUs
in the MR or MS PDU stores during submit operations.
local identifier. A unique identifier that distinguishes an object from all other
communications ever originated by the originating management domain; an attribute of
the MTS identifier object. A local identifier is generated by the GPI when a client
program transfers a communication out to the GPI service.