Huawei OptiX OSN 550 Configuration Manual page 459

OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
nrt-VBR
NRZ
NSAP
NTP
A.15 O
OA
OADM
OAM
OAM auto-discovery
OCP
ODF
ODU
OFS
OHA
OLT
Online Help
ONU
OOF
Optical Add/Drop
Multiplexer
Optical Amplifier
Optical attenuator
Optical Channel
Protection
Optical Connector
Optical Distribution
Frame
Issue 02 (2011-06-30)
Non Real-Time Variable Bit Rate
Non Return to Zero code
Network Service Access Point
Network Time Protocol
See Optical Amplifier
See Optical Add/Drop Multiplexer
Operations, Administration and Maintenance
In the case of OAM auto-discovery, two interconnected ports, enabled with the Ethernet
in the First Mile OAM (EFM OAM) function, negotiate to determine whether the mutual
EFM OAM configuration match with each other by sending and responding to the OAM
protocol data unit (OAMPDU). If the mutual EFM OAM configuration match, the two
ports enter the EFM OAM handshake phase. In the handshake phase, the two ports
regularly send the OAMPDU to maintain the neighborhood relation.
See Optical Channel Protection
See Optical Distribution Frame
Outdoor Unit
Out-of-frame Second
Overhead Access Function
Optical Line Terminal
The capability of many programs and operating systems to display advice or instructions
for using their features when so requested by the user.
Optical Network Unit
Out of Frame
A device that can be used to add the optical signals of various wavelengths to one channel
and drop the optical signals of various wavelengths from one channel.
Devices or subsystems in which optical signals can be amplified by means of the
stimulated emission taking place in a suitable active medium.
A passive device that increases the attenuation in a fiber link. It is used to ensure that the
optical power of the signals received at the receive end is not extremely high. It is
available in two types: fixed attenuator and variable attenuator.
In an optical transmission link that contains multiple wavelengths, when a certain
wavelength goes faulty, the services at the wavelength can be protected if the optical
channel protection is configured.
A component normally attached to an optical cable or a piece of apparatus to provide
frequent optical interconnection/disconnection of optical fibers or cables.
A frame which is used to transfer and spool fibers.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
A Glossary and Acronyms
A-21