363-206-204
GLOSSARY
Issue 9 October 1998
GL-15
OLIU
Optical Line Interface Unit. This circuit pack contains, among other things, the
optical transmitter and receiver.
OOF
Out of Frame.
Operations Interface
Any interface that provides information on the system performance or control.
These include the equipment LEDs, user panel, CIT, office alarms, and all teleme-
try interfaces.
Optical LBO
An optical attenuator that is inserted into a fiber optic line to decrease the optical
power.
OOL
Out of Lock.
OS
Operations System — A central computer-based system used to provide opera-
tions, administration, and maintenance functions.
OSI
Open Systems Interconnection — Referring to the OSI reference model, a logical
structure for network operations standardized by the international standards orga-
nization (ISO).
OSP
Outside Plan.
P
PC
Personal Computer.
PID
Program Identification.
PINFET
Positive Intrinsic Negative Field Effect Transistor.
PJC
Pointer Justification Count.
To Next Page
Loading...
Need help?
General
