ABR Last modified: Monday, October 20, 2008
Short for available bit rate, or Class C quality of service, an ATM bandwidth-allocation service that adjusts the amount of bandwidth based on the amount of traffic in the network. ABR service provides a guaranteed minimum bandwidth capacity but allows data to be bursted at higher capacities when the network is free. Compare with CBR, UBR and VBR.
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Related Terms

ATM CBR QoS throughput UBR VBR

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