
Upload
An operation to report some or all configuration data of an NE to the NMS. The
configuration data then covers the configuration data stored at the NMS side.
UPM
Uninterruptible Power Module
Upper threshold
TThe critical value that can induce unexpected events if exceeded.
UPS
Uninterruptible Power Supply
Upward cabling
Cables or fibers connect the cabinet with other equipment from the top of the cabinet.
User
Any entity external to the network which utilizes connections through the network for
communication. A person or other entity authorized by a subscriber to use some or all
of the services subscribed to by that subscriber.
User-to-Network
Interface
The interface between user equipment and private or public network equipment (for
example, ATM switches).
UTC
Universal Time Coordinated
A.22 V
VB
Virtual Bridge
VBR
Variable Bit Rate
VC
Virtual Concatenation
VC
VCG
Virtual Concatenation Group
VCI
Virtual Channel Identifier
Virtual Container
The information structure used to support path layer connections in the SDH. It consists
of information payload and path overhead (POH) information fields organized in a block
frame structure which repeats every 125 or 500 μs.
Virtual local area
network
A logical grouping of two or more nodes which are not necessarily on the same physical
network segment but which share the same IP network number. This is often associated
with switched Ethernet.
Virtual Private
Network
A system configuration, where the subscriber is able to build a private network via
connections to different network switches that may include private network capabilities.
VLAN
VP
Virtual Path
VPI
Virtual Path Identifier
VPN
A.23 W
Wait to Restore
The number of minutes to wait before services are switched back to the working line.
WAN
Wide Area Network
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.
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