AVST is a leading developer of unified communications solutions offering more than two decades of leadership in speech and messaging technology. The company was established in 2003 with the combined businesses of Sound Advantage and the CallXpress division of Captaris.

As the leading unified messaging solution from an independent supplier. CallXpress may be extended with innovative technologies, including the Seneca speech enabled call management module, interactive voice response (IVR) capabilities and components that allow universal access to voice mails, e-mails and faxes via the computer, cell phone, PDA or internet.

Along with top status recognized by analyst firms such as Gartner Group, Frost & Sullivan and the Radicati Group places CallXpress within the top three solutions in the world wide enterprise unified messaging market.

Headquartered in Orange County, California, AVST maintains facilities in Seattle, Washington, and the United Kingdom and has remote sales offices across the United States. AVST has over 35,000 systems installed worldwide.