iPhonica NetPac SBC is our family of session border controllers for service providers who must deliver peak performance for interactive communications across IP networks. Our product architecture tightly integrates session routing and media control for enabling high quality, money-making, voice, data and multimedia communications. NetPac comes in a standard tower casing (optiona rackmount). NetPac is a high performance, carrier-class product in all respects - performance, reliability, redundancy, packaging, management, accounting and scalability -- and is 100% complementary to a service provider's existing equipment infrastructure. As a high-performance, high-capacity, signaling and media control engine iPhonica NetPac SBC steers signaled media flows over the best route and performs required security, service assurance, and law enforcement functions at network borders. It supports service provider SIP, MGCP and H.323 networks; complements IP edge and border routers. NetPac SBC is also available in a configuration that satisfies security and SLA assurance requirements at enterprise network borders. As a high-performance SIP router NetPac SBC optimally routes interactive communication sessions and performs admission control.