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Intelligent media gateway selection in carrier-grade VoIP networks

Service providers face new challenges in designing and managing voice over IP (VoIP) networks with the quality, reliability, and scalability that have been the hallmark of conventional circuit-switched telephony. As carriers evolve their networks, these challenges come to the fore in the inter-networking of the emerging VoIP network segment with the public switched telephone network (PSTN). In this paper, we propose a measurement infrastructure and admission and routing algorithms for efficient and reliable operation of carrier-grade hybrid VoIP and PSTN networks.