AltiGen to Announce First Quarter Fiscal 2010 Financial Results on January 27, 2010

SAN JOSE, CA--(Marketwire - January 20, 2010) - AltiGen Communications, Inc. (NASDAQ: ATGN), the leading provider of integrated Microsoft-based Unified Communications solutions, will announce its first quarter fiscal 2010 financial results after the close of regular market trading on Wednesday, January 27, 2010. The Company will also hold a conference call to discuss the results at 2:00 p.m. Pacific Time (5:00 p.m. ET).

What:  AltiGen First Quarter Fiscal 2010 Conference Call

When:  Wednesday, January 27th 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) 894-5910 (domestic) or (785) 424-1052 (international) to
       listen in 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 January 29, 2010. To access the replay, dial (800) 695-0715
       (domestic) or (402) 220-1423 (international). 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) 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.