AltiGen Communications to Present at Upcoming Conferences.

AeA on May 6(th) and LD Micro on April 29(th)

FREMONT, Calif. -- Jerry Fleming, President and COO, and Phil McDermott, CFO, will be presenting AltiGen's (NASDAQ:ATGN) strategy and financials at the following conferences:

* Tuesday, April 29, 2008 at the inaugural LD Micro Conference. The company's presentation time is 4:00 p.m. Pacific Time. The conference will be held at the Omni Hotel in Los Angeles, CA.

* Tuesday, May 6, 2008 at the AeA Micro Cap Financial Conference. The presentation will be webcast live during the afternoon at a time to be determined that will be posted to the website. The conference will be held at the Monterey Plaza Hotel in Monterey, CA.

Presentations used at the conferences will be available on the company's website: www.altigen.com and via replay for 90 days.

About AltiGen Communications

AltiGen Communications, Inc. (NASDAQ:ATGN) is a leading provider of VoIP business phone systems and Microsoft-based Unified Communications solutions for small-to-medium businesses (SMBs), including companies with multiple distributed locations, branch offices and call centers. AltiGen's scalable, integrated, and easy to manage all-in-one unified communications solutions enable an array of applications like standards based SIP VoIP phones and servers, unified messaging, voicemail, call recording, conferencing, call activity reporting and mobility solutions that leverage both the Internet and the public telephone network to take advantage of the convergence of voice and data communications. AltiGen's systems are designed with an open architecture and are built on an industry standard platform. This adherence to widely used standards allows products to integrate with and leverage the existing technology investment of partners and customers. For more information, call 1-888-ALTIGEN or visit the website at www.altigen.com.