Centillium Communications, Inc. designs, develops, and supplies highly-integrated programmable system-on-a-chip (SoC) solutions that enable high-speed broadband access. Its products include passive optical network chip solutions; mixed-signal integrated circuits, and hardware and software applications for digital subscriber line and optical networking equipment deployed in central offices and customer premises; and voice over Internet protocol products for carrier- and enterprise-class gateways and consumer telephony. The company also offers fiber to the premises products that include central office transceivers and protocol processors, and customer premise equipment transceivers and protocol processors; solution for Ethernet passive optical networks; and copper lines, which are used for plain old telephone service and ISDN, as well as serve as conduits for digital subscriber line technologies. It offers products to consumers, enterprises, and service providers through sales representatives. The company was founded in 1997 and is headquartered in Fremont, California. It has locations in the United States, China, France, India, Japan, and Taiwan. As of October 24, 2008, Centillium Communications, Inc. operates as a subsidiary of TranSwitch Corp.