AltiGen to Announce Third Quarter Fiscal 2009 Financial Results on July 22, 2009

• Press Release
• Source: AltiGen Communications
• On 6:30 am EDT, Wednesday July 15, 2009

SAN JOSE, CA--(Marketwire - 07/15/09) - AltiGen Communications, Inc. (NASDAQ:ATGN - News), a leading provider of 100 percent Microsoft-based VoIP business phone systems and Unified Communications solutions, will announce its third quarter fiscal 2009 financial results after the close of regular market trading on Wednesday, July 22, 2009. The Company will also hold a conference call to discuss the results at 2:00 p.m. Pacific Time (5:00 p.m. ET).

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What:   AltiGen teleconference to announce Third Quarter Fiscal 2009
        results.

When:   Wednesday, July 22nd at 2:00 p.m. Pacific Time (5:00 p.m. ET)

Who:    Jerry Fleming, President and Chief Operating Officer, and Phil
        McDermott, Chief Financial Officer

How:    Dial (800) 862-9098 (domestic) or (785) 424-1051 (international)
        to listen to the call. The conference call ID is "AltiGen." A live
        Webcast will also be made available at www.altigen.com. A
        telephonic replay will be available approximately one hour after
        the call through July 24, 2009. To access the replay, dial
        (800) 283-4799.  A Web archive will be made available at
        www.altigen.com for 90 days following the call's conclusion.

About AltiGen Communications

AltiGen Communications, Inc. (NASDAQ:ATGN - News) is a leading provider of 100 percent Microsoft-based VoIP business phone systems and Unified Communications solutions. Having more than 10,000 customers around the world, AltiGen solutions are designed for high reliability, ease of use, seamless integration to Microsoft infrastructure technologies, and are built on a scalable, open standards platform. AltiGen's worldwide headquarters is in Silicon Valley, California, with international operations based in Shanghai, China. Local sales, service and support are provided by AltiGen's worldwide network of over 300 certified partners. For more information, call 1-888-ALTIGEN or visit the web site at www.altigen.com.