
GNE
GPS
Global Positioning System
GSM
Global System for Mobile Communications
GTS
Generic Traffic Shaping
GUI
Graphic User Interface
A.9 H
half-duplex
A transmitting mode in which a half-duplex system provides for communication in both
directions, but only one direction at a time (not simultaneously). Typically, once a party
begins receiving a signal, it must wait for the transmitter to stop transmitting, before
replying.
Hardware loopback
A connection mode in which a fiber jumper is used to connect the input optical interface
to the output optical interface of a board to achieve signal loopback.
HDLC
High level Data Link Control
HD-SDI
High Definition-Serial Digital Interface signal
HEC
Header Error Control
Hierarchical Quality of
Service
A type of QoS that controls the traffic of users and performs the scheduling according
to the priority of user services. HQoS has an advanced traffic statistics function, and the
administrator can monitor the usage of bandwidth of each service. Hence, the bandwidth
can be allocated reasonably through traffic analysis.
High Definition-Serial
Digital Interface signal
High definition video signal transported by serial digital interface.
History alarm
The confirmed alarm that has been saved in the memory and other external memories.
Historical performance
data
The performance data that is stored in the history register or that is automatically reported
and stored on the NMS.
HP
Higher Order Path
HPT
Higher Order Path Termination
HQoS
Hierarchical Quality of Service
A.10 I
IC
Integrated Circuit
IDU
Indoor Unit
IEEE
Institute of Electrical and Electronics Engineers
IETF
Internet Engineering Task Force
IF
Intermediate Frequency
IGMP
Internet Group Management Protocol
OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
A Glossary and Acronyms
Issue 02 (2011-06-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
A-15