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UBR Last modified: Wednesday, February 26, 2003
Short for unspecified bit rate, 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 Shopping UBR Products Compare Products,Prices and Stores Shop by Category: Specialty Kitchen Appliances 17 Store Offers Routers 5 Model Matches Building Supplies 29 Store Offers Watches 22 Store Offers Clothing 24 Store Offers