Huawei OptiX OSN 550 Configuration Manual page 466

A Glossary and Acronyms
SSM
SSU
Standard definition
Standard definition-
Serial Digital Interface
signal
Statistical multiplexing A multiplexing technique whereby information from multiple logical channels can be
STM-4
STP
Sub-network number
subnet
subnet mask
Subnetwork connection
multipath protection
SubNetwork
Connection Protection
Subnetwork
Connection Tunnel
Protection
Support
Suppression state
SVC
Switching priority
A-28
See Synchronization Status Message
Synchronization Supply Unit
Standard definition defines a video format with the resolution below 720P.
Standard definition video signal transported by serial digital interface.
transmitted across a single physical channel. It dynamically allocates bandwidth only to
active input channels, to make better use of available bandwidth and allow more devices
to be connected than with other multiplexing techniques.
SDH standard for transmission over optical fiber at 622.08 Mbit/s.
See Spanning Tree Protocol
A number used to differentiate network sections in a sub-network conference. A sub-
network ID consists of the first several digits (one or two) of a user phone number. An
order wire phone number consists of the sub-network ID and the user number.
A type of smaller networks that form a larger network according to a rule, for example,
according to different districts. This facilitates the management of the large network.
The technique used by the IP protocol to determine which network segment packets are
destined for. The subnet mask is a binary pattern that is stored in the client machine,
server or router matches with the IP address.
The only difference is that SNCP is of 1+1 protection and SNCMP is of N+1 protection.
That is, several backup channels protect one active channel in SNCMP.
A function, which allows a working subnetwork connection to be replaced by a protection
subnetwork connection if the working subnetwork connection fails, or if its performance
falls below a required level.
SNCTP provides a VC-4 level channel protection. When the working channel is faulty,
the services of the entire VC-4 path can be switched over to the protection channel.
A part used to support and fix a cabinet on the antistatic floor. It is made of welded steel
plates and is used to block up the cabinets to facilitate floor layout and cabling. Before
the whole set of equipment is grounded, insulation plates must be installed under the
supports, and insulating coverings must be added to the expansion bolts to achieve good
insulation performance.
An attribute set to determine whether an NE monitors the alarm. Under suppression
status, NE will not monitor the corresponding alarm conditions and the alarm will not
occur even when the alarm conditions are met.
Switching Virtual Connection
A priority of a board that is defined for protection switching. When several protected
boards need to be switched, a switching priority should be set for each board. If the
switching priorities of the boards are the same, services on the board that fails later cannot
be switched. Services on the board with higher priority can preempt the switching
resources of that with lower priority.
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Copyright © Huawei Technologies Co., Ltd.
OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
Issue 02 (2011-06-30)