Alcatel-Lucent 1643 AMS Installation Manual page 271

Glossary
Node
A node or network element is defined as all equipment that is controlled by one system
controller.
Non-revertive switching
In non-revertive switching, there is an active and standby high-speed line, circuit pack,
etc. When a protection switch occurs, the standby line, circuit pack, etc., is selected
causing the old standby line, circuit pack, etc., to be used for the new active line, circuit
pack, etc. The original active line, circuit pack, etc., becomes the standby line, circuit
pack, etc. This status remains in effect when the fault clears. Therefore, this protection
scheme is "non-revertive" in that there is no switch back to the original status in effect
before the fault occurred.
NTU
Network Termination Unit
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O OC-n
Optical Carrier, Level n
ODF
Optical Distribution Frame
OI
Optical Interface
OMS Administrator
See OMS System Administrator.
OMS System Administrator
A user of the OMS application with System Administrator privileges. See also User
Privilege.
Operator
A user of the OMS application with Operator privileges. See also User Privilege.
OS
Operations System - A central computer-based system that is used to provide operations,
administration and maintenance functions.
OSI
Open Systems Interconnection
OW
(Engineering) Order Wire
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P Path
A logical connection between one termination point at which a standard format for a
signal at the given rate is assembled and from which the signal is transmitted, and
another termination point at which the received standard frame format for the signal is
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365-312-802R7.2
Issue 4, June 2007
Alcatel-Lucent - Proprietary
See notice on first page
GL-5