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The combination of emerging concepts, such as Fog Computing, Software Defined Networking and Network Function Virtualization will contribute to transform the network into a flexible and dynamical continuum of resources, on which services can be easily deployed and managed (network programmability). In this scenario, a major topic is the use of ad hoc h/w(More)
The promises of Network Functions Virtualization (NFV) complemented with Software Defined Networking (SDN) can be simply stated as: get much more, pay much less. Adopting such paradigms, Service Operators expect to achieve high reductions in capital investments and greater operational agility. However, applying these concepts to existing networks will(More)
—This paper deals with the measurement uncertainty of the speech quality (SQ) achievable by an actual Voice-over-Internet-Protocol (VoIP) telephony network. The accuracy of end-to-end speech data provided by the Perceptual Estimation of SQ (PESQ) algorithm suggested in the International Telecommunica-tion Union (ITU) recommendation P.862 is discussed. Then,(More)