Tellabs announced a 40 Gbps transponder module for its Tellabs 7100 Optical Transport System (OTS). With the new plug-in module, the Tellabs 7100 OTS delivers an increase in bandwidth from 440 Gbps to 1.76 Tbps. The new 40 Gbps transponder module is expected to be commercially available in June 2008.http://www.tellabs.com