concentrator

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concentrator

[′kän·sən‚trād·ər]
(electronics)
Buffer switch (analog or digital) which reduces the number of trunks required.
(engineering)
An apparatus used to concentrate materials.
A plant where materials are concentrated.

concentrator

(communications)
A device that combines the data streams from many simultaneously active inputs into one shared channel in such a way that the streams can be separated after transmission. The concentrator's output bandwidth must be at least as great as the total bandwidth of all simultaneously active inputs. A concentrator is one kind of multiplexing device.

For example, a concentrator may be used to connect 24 2400 bps TTYs to a host via a 57600 bps channel.

concentrator

A device that combines several communications channels into one. It is often used to tie multiple terminals together into one line. It differs from a multiplexor, which also combines several lines into one, because the total bandwidth of a concentrator's inputs is not equal to its outputs. A concentrator may temporarily store data to allow for this discrepancy, whereas a multiplexor does not.

An Ethernet hub, which is a multiport repeater, is sometimes called a "concentrator."
References in periodicals archive ?
Today, MFR and MLPPP have been implemented in multimegabit access concentrators that enable NxT1 service for service providers and their business customers.
The scalability of access concentrator technology networks permits the deployment of high-speed Internet access to MTU structures more easily, more quickly, and more profitably than ever before possible.
Since then, Lucent has supplied TP with solutions from its Accelerate(TM) Next Generation Networking portfolio, namely Stinger(R) FS+, LS and MRT products from the Stinger(R) digital subscriber line (DSL) access concentrator family, CellPipe(R) customer premise equipment (CPE) subscriber devices and Lucent's NavisAccess(TM) DSL Management System.
The LE-54v Access Portal and LE-311v Access Concentrator will be available Q3 2004.
The current trend of VoIP, packet video and packet data moving closer and closer to the edge of the network aligns with our strategy, and these new Broadband Access Concentrator meets real-world requirements, worldwide.
We are pleased to add BaneTele to our list of customers taking advantage of the multi-service capabilities of our Broadband Access Concentrator," said Sean Belanger, president and CEO of Paradyne.
Devlin said that telephone companies around the world could now offer high quality video services over their existing telephone wires using the mPhase TV+ solution that integrates the Lucent Stinger DSL Access Concentrator as a concentrator and the SkyStream Networks Mediaplex head end platform.
Stinger(R) DSL Access Concentrator is a DSLAM - Digital Subscriber Line Access Multiplexer - featuring 14 slots with ports that can serve up to 72 subscribers, providing a total of up to 1008 ADSL access ports per piece of equipment installed in the operator network.
Under the terms of the extension, Lucent will continue to install its Stinger(R) xDSL broadband access concentrators throughout TP's network.
The next-generation Cable & Wireless network utilizes Paradyne's Broadband Access Concentrators (BAC) within its central offices and remote terminals throughout Barbados.
BridgeCom is deploying Paradyne's next-generation Broadband Access Concentrators in central office sites throughout Manhattan, Queens, Bronx, Brooklyn, Staten Island, Nassau, Suffolk, Westchester and Rockland to deliver multiple business-class services.