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CBR Last modified: Monday, October 20, 2008
Short for constant bit rate, or Class A quality of service, an ATM bandwidth-allocation service that requires the user to determine a fixed bandwidth requirement at the time the connection is set up so that the data can be sent in a steady stream. CBR service is often used when transmitting fixed-rate uncompressed video. Compare with ABR, UBR and VBR.
Enterprise VoIP Planet The IT Manager's Guide to Voice over IP Webopedia's "Did You Know...?" Section Use this Webopedia knowledge section for an in-depth overview of specific technologies and occurrences in the areas of Computer Science, The Internet, and Computer Hardware and Software. Wi-Fi Planet 802.11 news, commentary and information.	Related Categories Data Transfer Rates Networking Standards Related Terms ABR ATM QoS throughput UBR VBR