A SIP-based VoIP Application in Enhanced Ethernet Passive Optical Network Architecture

—Since the inception of telephony, the public switch telephone network (PSTN) has had major impact in everyday life. The widespread adoption of VoIP has totally revolutionized the telephony industry. With many free services for the users, VoIP is favored over the traditional PSTN. A major concern for VoIP is voice quality, as it is a network-based packet switching technology. 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 the operational cost as it is easier to run, maintain and manage such networks. With all the nifty features of VoIP a major concern for service providers is bandwidth availability. VoIP requires high-bandwidth, with minimum delay and if possible, no packet loss. Ethernet passive optical network (EPON) is regarded as the best solution in access networks in providing the high bandwidth requirements for VoIP Services, and other multimedia application. In this paper, we propose a new architecture that incorporates a VoIP server in 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. Our simulation results show that the VoIP Server can be implemented in the EPON and the constraints of VoIP such as delay jitter and packet loss is improved, and hence a better Quality of Service (QoS).