Panasonic 15000 - Manual (Page 93)

- 93 -
List of terms
Nortel Multiservice Switch 7400/15000/20000
Terminology
NN10600-005 7.2S1 Standard
PCR7.2 and up March 2006
Copyright © 2006, Nortel Nortel Confidential
Open Systems Interconnection (OSI)
A suite of communication protocols, network architectures, and network
management standards produced by the International Standards
Organization (ISO). The aim of OSI is to provide information transfer in a
nonproprietary environment. The protocols are open in nature, that is, defined
in an agreed forum by vendors and government committees.
operations, administration, and maintenance (OAM)
A segment boundary associated with an ATM interface or a specific
connection passing through that interface.
If the interface is on an OAM segment boundary, all connections passing
through the interface terminate OAM segment loopback cells. If the interface
is not on a segment boundary, OAM segment loopback cells pass through
transparently. The setting for the segment boundary at the interface level can
be overridden at the connection level for nailed-up relay points in an ATM
bearer service connection.
operational attribute
Provides information or data used for monitoring the operation of Nortel
Multiservice Switch nodes and services. The values of operational attributes
are not retained across system restarts. These values cannot be provisioned,
but some of them can be set. Operational attributes include information such
as component OSI management state and statistical data.
operational card
A processor card that is capable of providing service. The card can operate
as either an active instance or a standby instance.
operational component
A component that is created automatically by Nortel Multiservice Switch
systems to represent some modeled entity that is dynamic in nature. An
operational component can contain only operational attributes and
subcomponents. It can also be created using operator commands.
Operational information is not retained in the event of a power outage.
optimization
A PORS feature that allows operational paths to be evaluated based on their
current path characteristics against new paths that are determined by Route
Selector. If the new path can minimize the original paths provisioned metric
(cost or delay), then the current path will be moved to the more optimal path.
optimization metric
An optimization metric refers to the route computation criteria that is
minimized when finding the best path for a call.