Hitachi Cable America’s Carrier IP Networking Division with its main offices in San Jose, California (Silicon Valley), is responsible for sales, marketing, systems engineering and support of Hitachi’s APRESIA Carrier IP Networking products in North America. The APRESIA product portfolio includes Layer 2, Layer 3, 1/10/100G fixed and modular Ethernet switches and DWDM Systems.
http://www.hca.hitachi-cable.