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Overture Networks Announces US Patent for Multipoint Protected Switching Ring

Tuesday, April 08, 2008

Technology Helps Avoid Interruptions in Delivery of Carrier Ethernet Services

Research Triangle Park, NC -- Overture Networks, a leading developer of converged packet access solutions for Carrier Ethernet, today announced that it has been awarded US Patent # 7,339,887 for its Multipoint Protected Switching Ring. This patent supports Overture’s ISG family of converged packet access solutions, and demonstrates the company’s continued commitment to and leadership in the Carrier Ethernet market. Overture Networks has received seven other patents in the areas of resiliency, management and pseudo-wire technology.

With the rapid growth of Carrier Ethernet services and solutions running on packet-based infrastructures, network resiliency and failover time have become key issues. As Ethernet is deployed in metro and access networks, and mission-critical services and Service Level Agreements (SLAs) are offered on these networks, there is a strong demand to maintain SONET/SDH-like resiliency—the ability to recover from a fault in less than 50 milliseconds. A small variety of techniques such as Resilient Packet Ring (RPR) are being deployed to provide this level of resiliency in an Ethernet-based ring topology, but price points tend to be high. Multipoint Protected Switching Ring (PSR) is the latest innovative, patented technology from Overture to help carriers avoid interruptions in the delivery of Ethernet services even when a break in a ring occurs. PSR enables carriers to restore communications in less than 50 milliseconds among all nodes when a virtual break is created and/or when a physical failure occurs.

"This latest patent for Multipoint Protected Switching Ring validates Overture Networks’ position as a leader in the growing Carrier Ethernet Services market," said Prayson Pate, vice president of Engineering for Overture Networks. "The development of this technology is representative of our commitment to help carriers deliver Ethernet services more reliably and more cost-effectively, so that they can meet the need for growing customer demand."

About Overture Networks Inc.

Headquartered in the high-tech center of Research Triangle Park, North Carolina, Overture Networks is relentlessly focused on providing solutions at the ever-expanding edge of the access network. The company enables network service providers and enterprises to stretch the edge of their networks to increase revenues, decrease costs and ensure a smooth migration to next generation networking. With its patent protected and award winning ISG family of products, Overture Networks uniquely combines the packet-switched and circuit-switched worlds into a single architecture—at cost points that make it extremely attractive for offering Carrier Ethernet Services to any size location—over copper, fiber or optical transport. For more information, visit

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