Measurement methods for QoS in VoIP review

In the last years there is a merging trend towards unified communication systems over IP protocols from desktop to handheld devices. However this trend brings forth the limited QoS control existing in these types of networks. The lack of cost-effective QoS strategies is felt negatively directly by the end user in terms of both communication quality and increasing costs. Therefore, this paper analyses which are the main methods available for measuring the QoS in VoIP networks for both audio and video calls and how neural networks can be used to predict the quality as perceived from the end user perspective.

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