Cisco ONS 15454 SDH Specifications Page 245

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Glossary
GL-15
Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Node
Endpoint of a network connection or a junction common to two or more lines in a network. Nodes can be processors,
controllers, or workstations. Nodes, which vary in routing and other functional capabilities, can be interconnected by links, and
serve as control points in the network. Node is sometimes used generically to refer to any entity that can access a network. In
this manual the term “node” usually refers to an ONS 15454.
O
OAM&P
(Operations, Administration, Maintenance, and Provisioning). Provides the facilities and personnel required to manage a
network.
OC
Optical carrier.
OOS AS
Out of Service Assigned.
Optical amplifier
A device that amplifies an optical signal without converting the signal from optical to electrical and back again to optical
energy.
Optical receiver
An opto-electric circuit that detects incoming lightwave signals and converts them to the appropriate signal for processing by
the receiving device.
Orderwire
Equipment that establishes voice contact between a central office and carrier repeater locations. See Local orderwire.
OSI
Open Systems Interconnection.
OSPF
Open Shortest Path First.
OSS
Operations Support System.
OSS/NMS
Operations Support System/Network Management System.
Output contacts (controls)
Triggers that drive visual or audible devices such as bells and lights. Output contacts can control other devices such as
generators, heaters, and fans.
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