Abstract-ITU-T recommendation G.107 introduced the Emodel, a repeatable way to assess if a network is prepared to carry a VoIP call or not. Various studies show that the Emodel 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 important factors required for monitoring the call quality. In this paper, we propose simple correction to a simplified E-model; we show how to calculate the correction coefficients for 4 common codecs (G.711, G.723.1, G.726 and G.729A) and then we show that its predictions better match PESQ scores by implementing it in a monitoring application.
Corrected versions of the E-model have been proposed to simplify the calculations and focus on the most important factors required for monitoring the call quality REF .
Monitoring VoIP call quality using improved simplified E-model
2013 International Conference on Computing, Networking and Communications (ICNC)
2013 International Conference on Computing, Networking and Communications (ICNC)
Computer Science