Readiness assessment of ethernet networks for telephony service based on quantity and quality criterions

Using data communication networks for telephony services has evolved the telecommunication industry. The basic requirement in this field is achieving confidence about the quality of the telephony service. In this paper, a practical approach based on the quantitative and qualitative analysis is presented in order to evaluate the readiness of an Ethernet network for telephony service. The aim is to compare the results of the assessment using quantitative and qualitative analysis. In order to calculate the call capacity of the network, E-model is used. E-model estimates the mean opinion score (MOS) rate of the voice quality using the measured network quantities. On the other hand, the quantity criterions are also used in this paper to evaluate the network. These criterions are packet loss ratio and delay. As a case study, we consider the simulation of an enterprise network connects two branches of the organization.