UBR


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UBR

(Unspecified Bit Rate) An asynchronous transfer mode (ATM) level of service that does not guarantee available bandwidth. It is very efficient, but not used for critical data.
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References in periodicals archive ?
(1) User-Based Algorithm from Resource Perspective (User-Based Resources, UBR).
This would benefit businesses and allow them more financial flexibility in hard times - but any change to the basis of calculating the UBR and the subsequent loss in revenue would need to be offset via other tax rises as the government would still need to regain lost revenue.
Subplots involving Ofka's smartaleck brother-in-law/boss Eda (David Novotny) and goofy, dumpster-diving Ubr's crush on Ofka also fall a bit flat.
The bursty nature of ABR and UBR traffic is not well accommodated with this static VPC provisioning of bandwidth because it restricts access to excess bandwidth available in the core.
Accordingly, this provides an integration benefit for the CBR service class because of the service benefits from the higher system capacity required for the total traffic and the higher capacity usage resulting from the best effort character of UBR traffic.
Mr Wright, of agents Irving Rice, said: ``By the end of the year government will confirm time-limits for making 2005 appeals, UBR multipliers (``rate in pounds '') for 2005/06 and transitional arrangements following revaluation, and until then it will not be possible to calculate rate bills for next year.
Mr Gould also warns of further uncertainty over the new uniform business rate (UBR), which will not be confirmed until November 2004.
Release 2 also provides comprehensive support for all standard Asynchronous Transfer Mode (ATM) Quality of Service (QoS) classifications (CBR, VBR-rt, VBR-nrt, UBR, and UBR+).
Verizon's VBRnrt arrangement supports bursty data traffic with average and peak traffic parameters and allows SHDSL traffic to take precedence over unspecified bit rate (UBR) traffic in the network.
The unit comes with ATM traffic shaping for CBR-type traffic contracts, as well as UBR support.--VBrick