NAPERVILLE, Ill. - Tellabs today announced it is adding Ethernet over SONET virtual concatenation (EoS-VC) to its new Tellabs® 6400 metro transport switching series products. The technology, which resizes SONET channels to more efficiently transport data and optimize networks, enables carriers to support up to five times more data traffic on their networks without stranded bandwidth or the added cost of an overlay network. Prior to the development of this new feature, service providers were unable to efficiently provide capacity for Ethernet services, stranding as much as 75 percent of the bandwidth. The Ethernet over SONET capability is included in the Tellabs 6400 feature package 2.0 and is now available. "Tellabs is a leader in EoS-VC and is committed to helping our customers deploy profitable Ethernet services in the most economical way possible," said Ed Kennedy, senior vice president of Tellabs' Metro Networking Group. "This solution enables carriers to better meet the demands of their customers and speed their return on investment."The Tellabs 6400 Series Feature Pack 2.0 release also includes the addition of Gig E on the Tellabs 6400 transport switch and Fast Ethernet with the new release of the Tellabs 6410 transport edge node. Tellabs has also significantly increased the density on several existing SONET port cards, which makes the Tellabs 6400 series the densest products in the metro arena. Tellabs Inc.