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UBR
Last modified: Wednesday, February 26, 2003
Short for
u
nspecified
b
it
r
ate
, or
Class D
quality of service
, an
ATM
bandwidth
-allocation service that does not guarantee any
throughput
levels and uses only available bandwidth. UBR is often used when transmitting data that can tolerate delays.
Compare with
ABR
,
CBR
and
VBR
.
Related Categories
Data Transfer Rates
Networking Standards
Related Terms
ABR
ATM
CBR
throughput
VBR
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UBR Products
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