Abstract
This paper presents a network model based on a NGN architecture applied to the Mexican rural context and deployed over the optical fiber backbone of the e-Mexico (now Mexico Conectado) system. The proposed model considers the integration of access networks for GERAN, UTRAN and E-UTRAN users, allowing also the interconnection with circuit switched networks. We use the E model proposed by ITU-T to maintain a minimum level of voice quality R>70. Additionally, we calculate the estimated bandwidth consumption during the seven phases that SIP requires establishing a telephone call on IMS networks. Our model includes the calculation of the most significant NGN parameters, taking into account the use of an optimal codec, a percentage of packet loss and link utilization level, for the conditions of the Mexican rural environment and the e-Mexico (now Mexico Conectado) system infrastructure.
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