OSI/MHS Gateway Programmatic Interface (GPI) Reference Manual

Glossary
OSI/MHS Gateway Programmatic Interface (GPI) Reference Manual—522223-001
Glossary-16
MS group
MS group. The OSI/MHS group that implements the message store-and-forward function.
The MS group consists of a single MS process, an MS SQL catalog, an MS SQL
database, and an MS PDU store. There can be zero, one, or more MS groups in a single
OSI/MHS subsystem.
MS process. A process in the MS group that provides mailbox management, access
management, submittal, delivery, retrieval, and recovery.
MS SQL catalog. An SQL catalog in which the MS, SAVEMBOX, and RESTMBOX
programs may be registered.
MS SQL database. The message store SQL database. Each MS group has one MS SQL
database.
MTA (Message Transfer Agent). The functional component that routes X.400 messages
through an X.400 network. MTAs work together to transfer messages and deliver them
to the intended recipient; there can be multiple MTAs on the path between any two
users. In OSI/MHS, multiple MR groups operate in parallel as a single logical MTA.
MTA object. An object type, used in OSI/MHS management interfaces, that defines adjacent
MTAs and their attributes to the OSI/MHS subsystem.
MTA process. See MRP process.
MTS (Message Transfer System). The part of a message handling system that contains the
MTAs and that permits communication between user agents.
MTS identifier. A unique identifier that distinguishes a communication from all other
communications ever conveyed by the MTS within the MHS.
multithreaded process. A process that handles multiple requests simultaneously.
multivalued attribute. An attribute that can have more than one value.
negative notification (NN). An EDIN that reports responsibility for an EDIM has been
refused. A negative notification is generated by a receiving EDI-UA, EDI-MS, or
PDAU when EDIM responsibility can not be given to the associated user, and the EDIM
can not be forwarded to another recipient. A negative notification is generated only if it
had been requested by the originator of the EDIM. See also EDIM responsibility.
network address. See NSAP and NSAP address.
Network Layer. Layer 3 in the OSI Reference Model. This layer routes data by establishing,
maintaining, and terminating communications between nodes. It sets up the most
economical path, both physical and logical, between communicating nodes; routes
messages through intervening nodes to their destinations; and controls the flow of
messages between nodes.
network service access point. See NSAP or NSAP address.