Expanding upon an existing OEM relationship, Tellabs is making a strategic investment in White Rock Networks, a start-up based in Richardson, Texas. Under the agreement, Tellabs will market and sell a customized version of the White Rock VLX2020, which is a compact next-generation SONET add/drop multiplexer. Tellabs also adds to its portfolio a customized version of the White Rock VLX1010, a WDM platform that supports a seamless migration from coarse WDM to dense WDM. Financial terms were not disclosed. Tellabs and White Rock are working to develop...