Leandro C. G. Lustosa,  Leandro S. G. Carvalho,  Paulo H. de A. Rodrigues,  Edjair de S. Mota. 

An objective method for VoIP quality evaluation based on the ITU-T E-model is presented. This method incorporates extensions proposed by Alan Clark, later adopted by ETSI, and it corrects some expressions necessary for calculating internal extended E-model parameters. This revised method was implemented as an analytical evaluation module and incorporated to an existing in-house developed VoIP monitoring tool. Results from experimental measurements demonstrate the adequacy of our suggestions and considerations.

http://www.lbd.dcc.ufmg.br:8080/colecoes/sbrc/2004/052.pdf

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