Huawei OptiX OSN 550 Configuration Manual page 444

A Glossary and Acronyms
BIP
Bit error
Bit Error Rate
BITS
bound path
BPDU
BPS
bridge
Bridge Protocol Data
Unit
broadcast
Broadcast
BSC
BSS
Build-in WDM
Building Integrated
Timing Supply
BWS
A-6
A method of error monitoring. With even parity an X-bit code is generated by equipment
at the transmit end over a specified portion of the signal in such a manner that the first
bit of the code provides even parity over the first bit of all X-bit sequences in the covered
portion of the signal, the second bit provides even parity over the second bit of all X-bit
sequences within the specified portion, and so on. Even parity is generated by setting the
BIP-X bits so that there is an even number of 1s in each monitored partition of the signal.
A monitored partition comprises all bits which are in the same bit position within the X-
bit sequences in the covered portion of the signal. The covered portion includes the BIP-
X.
An incompatibility between a bit in a transmitted digital signal and the corresponding
bit in the received digital signal.
Ratio of received bits that contain errors. BER is an important index used to measure the
communications quality of a network.
See Building Integrated Timing Supply
A parallel path with several serial paths bundled together. It improves the data throughput
capacity.
See Bridge Protocol Data Unit
Board Protection Switching
A device that connects two or more networks and forwards packets among them. Bridges
operate at the physical network level. Bridges differs from repeaters because bridges
store and forward complete packets, while repeaters forward all electrical signals.
Bridges differ from routers because bridges use physical addresses, while routers use IP
addresses.
The data messages that are exchanged across the switches within an extended LAN that
uses a spanning tree protocol (STP) topology. BPDU packets contain information on
ports, addresses, priorities and costs and ensure that the data ends up where it was
intended to go. BPDU messages are exchanged across bridges to detect loops in a
network topology. The loops are then removed by shutting down selected bridges
interfaces and placing redundant switch ports in a backup, or blocked, state.
The process of sending packets from a source to multiple destinations. All the ports of
the nodes in the network can receive packets.
A means of delivering information to all members in a network. The broadcast range is
determined by the broadcast address.
Base Station Controller
Base Station Subsystem
A function which integrates some simple WDM systems into products that belong to the
OSN series. That is, the OSN products can add or drop several wavelengths directly.
In the situation of multiple synchronous nodes or communication devices, one can use
a device to set up a clock system on the hinge of telecom network to connect the
synchronous network as a whole, and provide satisfactory synchronous base signals to
the building integrated device. This device is called BITS.
Backbone WDM System
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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)