Manufacturer of call processing systems, including unified messaging systems and PC-based computer telephony integration solutions. The company's software and servers integrate client's traditional office telephone systems with PCs, LANs, and the Internet. Its products help businesses incorporate telephony functions, including PC-based unified messaging, voice mail, and desktop call handling into their daily operations. The company operates through its corporate headquarters located in Seattle, with representatives throughout US, as well as offices in Australia, Canada, China, France, Germany, Italy, The Netherlands, Sweden, and UK.