Haytham Assem

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—ITU-T recommendation G.107 introduced the E-model, a repeatable way to assess if a network is prepared to carry a VoIP call or not. Various studies show that the E-model is complex with many factors to be used in monitoring purposes. Consequently, simplified versions of the E-model have been proposed to simplify the calculations and focus on the most(More)
—We present and evaluate an algorithm that performs in-call selection of the most appropriate audio codec given prevailing conditions on the network path between the end-points of a voice call. We have studied the behaviour of different codecs under varying network conditions, in doing so deriving the impairment factors for non-ITU-T codecs so that the(More)
The future Internet is expected to connect billions of people, things and services having the potential to deliver a new set of applications by deriving new insights from the data generated from these diverse data sources. This highly interconnected global network brings new types of challenges in analysing and making sense of data. This is why machine(More)
—Maintaining good Quality-of-Experience (QoE) is crucial for Voice-over-IP (VoIP) applications, particularly those operating across the public Internet. Accurate online estimation of QoE as perceived by end users allows VoIP applications take steps to improve QoE when it falls below acceptable levels. ITU-T recommendation G.107 introduced the E-model, which(More)
  • Mohamed Adel, Mahmoud Mohamed, Brendan Jennings, Mahmoud Ashraf, Kareem Nagy, Mohamed Tawakol +8 others
  • 2012
Declaration I hereby certify that this material, which I now submit for assessment on the programme of study leading to the award of Masters by Research is entirely my own work and has not been taken from the work of others save to the extent that such work has been cited and acknowledged within the text of my work. i To my parents and my sister for their(More)
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