| Summary: | 碩士 === 元智大學 === 資訊工程學系 === 102 === Abstract- VoIP has totally revolutionized the telephony industry, being a packet-switched telephony system; the quality has always been a major concern when compared to the Public Switched Telephone Networks (PSTN) that has maintained an exceptional quality since its inception. VoIP comes with so many free services that users initially had to pay for when using the PSTN. Cost reduction and new income sources for operators and service providers will be achieved with VoIP. VoIP will come in handy in enterprise networks where voice and data service are often separated networks, with the provisioning of multiple service type in a single network with a common IP network infrastructure, this will reduce operational cost as it is easier to run, maintain and manage such networks. With all the fancy features of VoIP; it may lead to reliable concerns such as bandwidth availability, delay and packet loss. Ethernet passive optical network (EPON), which is regarded as the best solution in access networks in providing the high bandwidth requirements of VoIP Services, and other multimedia application. In this paper we propose a new architecture that incorporates a VoIP server within the Optical Line Terminal (OLT). A fully functioning VoIP telephony system will be implemented in the OLT that will be able to handle all the telephony services for users. Simulation results have shown that the proposed architecture can achieve a good system performance and QoS metrics in terms of packet delay, jitter, system throughput and packet loss.
Index Terms—PSTN, SIP, VoIP, EPON, Service Providers, QoS.
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