Open Source Takes on Telecom

"Without realizing it at the time, Spencer was at the forefront of a movement to bring open source to telecom. By 2001, Voice over Internet Protocol (VoIP)—the technology that routes voice calls over data networks—had started to take off. And it became clear to Spencer that the market was ready for open-source telecom systems. So, he changed the focus of his company to the Asterisk switch and in 2002 renamed the company Digium."