IPTV QoE: Understanding and interpreting MDI values
This paper gives an overview of the MDI and discusses some potential applications related to measuring video quality.
As service providers actively deploy triple play networks that deliver voice, video and data over a converged infrastructure, network equipment manufacturers are fervently designing and testing devices that enable quality of service (QoS) on these networks. QoS mechanisms allow devices to apply policies to the different types of traffic present on a network in order to ensure that each one is treated in the most appropriate way. Voice traffic, for example, typically receives high priority because it is very sensitive to delay. Data traffic, such as web or email, is not as affected by timing and therefore does not need the same preferential treatment.
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Network Services 
