Alcatel-Lucent 1643 AMS Applications And Planning Manual page 305

Glossary
ODF
Optical Distribution Frame
ODU
Optical Demultiplexer Unit
OFS
Out of Frame Second
OI
Optical Interface
OMU
Optical Multiplexer Unit
OOF
Out Of Frame
OOS
Out Of Service
Operations System (OS)
The Operations System is the system that provides operations, administration and
maintenance functions.
Operator
A user of the Lucent OMS application with Operator privileges. See also User Privilege.
Optical Line System (OLS)
A high-capacity lightwave system that is designed to multiplex eight optical signals with
different wavelengths into one combined signal through an optical fiber. There is a
difference of 1.5 micrometer in wavelength between two multiplexed signals.
OS
Operations System - A central computer-based system that is used to provide operations,
administration and maintenance functions.
OSB
Optical Splice Box
OSI
Open Systems Interconnection
OW
(Engineering) Order Wire
....................................................................................................................................................................................................................................
P PABX
Private Automatic Branch eXchange
...................................................................................................................................................................................................................................
365-312-801R7.2
Issue 3, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
GL-21