DEC 4000 600 series Owner's Manual page 224

mixed-interconnect VMScluster system
Digital's VMScluster system that uses multiple interconnect
types between systems; for example, CI, Ethernet, DSSI, or
FDDI.
MOP
Maintenance Operations Protocol. The transport protocol for
network bootstraps and other network operations.
multiprocessing system
A system that executes multiple tasks simultaneously.
node
A device that has an address on, is connected to, and is able
to communicate with other devices on the bus. In a computer
network, an individual computer system connected to the
network that can communicate with other systems on the
network.
open system
A system that implements sufficient open specifications
for interfaces, services, and supporting formats to enable
applications software to:
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Open Systems Interconnect standards
Communications reference model defined by the ISO
(International Organization for Standards). The OSI reference
model consists of seven layers and defines protocols for the
physical transmission of data, as well as the structuring and
organization of data, so that it can be sent and received in a
form that can be understood by conforming implementations.
Conformance to the OSI standard will enable communication
among computer systems from different vendors.
Glossary–8
Be ported across a wide range of systems with minimal
changes
Interoperate with other applications on local and remote
systems
Interact with users in a style that facilitates user portability