ITU-T - International Telecommunication Union/ITU Telcommunication Sector
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ITU-T Y.1221-2010
Scope
This Recommendation describes traffic control and congestion control procedures for IP-based networks. Such control procedures are necessary in order to support services with quality of service (QoS)@ where the QoS is negotiated between a user and the network. Traffic control refers to all network actions aiming to meet the negotiated performance objectives in an IP-based network and to allow the avoidance of congested conditions. Congestion control refers to all network actions to minimize the intensity@ spread and duration of congestion. This Recommendation provides a general description@ as well as objectives and procedures@ for traffic control and congestion control. In particular@ it describes the concepts of the traffic contract between a user and the network. It specifies the IP transfer capabilities (IPTCs) including@ for each IPTC@ the service model@ the associated traffic patterns and conformance definition.
ITU-T Y.1221-2010 history
2010ITU-T Y.1221-2010 Traffic control and congestion control in IP-based networks (Study Group 12)
2005ITU-T Y.1221 AMD 2-2005 Traffic control and congestion control in IP-based networks Amendment 2: Further extension to transfer capabilities Study Group 12
2004ITU-T Y.1221 AMD 1-2004 Traffic control and congestion control in IP-based networks Amendment 1: Extensions to transfer capabilities SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT GENERATION NETWORKS Internet protocol aspects ?Architecture, acce
2002ITU-T Y.1221-2002 Traffic control and congestion control in IP based networks SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE AND INTERNET PROTOCOL ASPECTS Internet protocol aspects - Architecture, access, network capabilities and resource management Study Group 13