When operating as a pure ADM, the 454 could add and drop circuits from OC-192 down to Digital Signal 1 (DS1) -- later it would support Wavelength Division Multiplexing (WDM).
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Cerent Corporation was an optical equipment maker based in Petaluma, California.
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It was founded in 1997 as Fiberlane Communications with funding from Kleiner Perkins Caufield & Byers and Vinod Khosla as the managing VC.
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