Simulation Platform for the Planning and Design of Networks Carrying VoIP Traffic

In order to overcome the known challenges (i.e., latency, jitter, packet loss, and etc.) of transmitting multimedia traffic over a packet switched network, careful network planning needs to take pace. Existing simulation platforms, particularly for Voice over IP (VoIP) simulations, have available a limited selections of speech encoding algorithms. The primary objective of this thesis is the creation of a tool aimed at supporting the planning and design phases of packet switched networks carrying voice traffic while considering realistic and current network conditions and simulation features. More specifically, this thesis focuses on the creation of a speech background traffic generation models with the purpose of generating traffic that follows the behaviour of a number of speech encoding algorithms. Also, a model to integrate real speech to the VoIP simulation is offered. Lastly, objective and subjective speech quality assessment methodologies are implemented.