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 ?
Odetics Inc's subsidiary Mariner Networks has made the DEXTER 3000 broadband access concentrator available across Europe.
Today, MFR and MLPPP have been implemented in multimegabit access concentrators that enable NxT1 service for service providers and their business customers.
HIGH-DENSITY 56K/ISDN REMOTE ACCESS SOLUTION will cost about $100 less per port than what service providers and system integrators normally pay for comparable 96-port Lucent, Ascend, or Cisco remote access concentrators, according to its manufacturer, Ariel.
Dell'Oro Group forecasts sales of Access Concentrator -- Cable Modem equipment to grow 85% year-over-year in 2002, and that yearly sales will be over $1.0 B in 2005.
Thus, the access concentrator model represents a cost-effective solution to the service providers, to the MTU property owners, and to their tenants.
Lucent Technologies has added new capabilities to its Stinger digital subscriber line (DSL) access concentrator through the introduction of the company's new 48-port G.lite line card.
An integrated DSL access concentrator and ATM switch (DSLAS) are located in the service provider's central office.
Zhone Technologies Inc., a global pioneer in FTTx network access solutions, announced today that Etisalat, the leading integrated service provider in the Middle East, is utilizing Zhone's industry-leading MXK intelligent terabit access concentrator to backhaul its mobile data traffic, including traffic from its most recent Long-Term Evolution (LTE) deployment.
The upgrade to Lucent's PathStar Access Server and Stinger, a new DSL access concentrator, will give KMC customers voice and data services over DSL using--you guessed it--an ATM backbone.
(www.zhone.com), a global leader in multi-service access solutions, announced today that Etisalat, the leading integrated service provider in the Middle East, has selected Zhone's new MXK (TM) intelligent terabit access concentrator for its major FTTx network expansion.
The solution is based on the Lucent Stinger DSL Access Concentrator which is able to provide integrated voice and data.
For example, a PPP compression packet going to a remote access concentrator may only require LZS compression and no other algorithm.