RingCentral is a publicly traded company that appears on the New York Stock Exchange. Founded in 1999, the company has its headquarters in San Mateo, California, with branch offices in the Philippines, China, Russia, Ukraine and Denver, Colorado. The company specializes in cloud phone systems, which replaces PBX systems with a digital cloud, using voice over internet protocol or VOIP technology. With RingCentral, phones are connected to the Internet, and smart phones and computers can be used to make calls over a company's phone system. The program is shown to reduce phone costs by up to 60 percent and is available in Standard, Premium and Enterprise packages to suit companies of all sizes.