AltiGen Communications and Enabling Technologies Partner to Provide Exchange 2007 Integration Services

FREMONT, Calif., Aug. 6 -- AltiGen(R) Communications, Inc. (NASDAQ:ATGN) , a leading provider of VoIP business telephone systems and unified communications solutions for small-to-medium businesses (SMBs), including companies with multiple distributed locations, partnered with Enabling Technologies Corporation, a leading Microsoft Exchange integrator, to provide Exchange messaging consulting services to AltiGen's reseller channel and customer base.

"Through our partnership with Enabling, our end users and reseller channel now have an indispensible resource to assist in the planning and deployment of AltiGen VoIP Phone Systems with native Exchange 2007 integration," said Jeff Kays, Vice President of Business Development at AltiGen.

"We are very excited about our partnership with AltiGen because it takes a best-of-breed IP Telephony solution and joins it with a best-of-breed Unified Communications solution from Microsoft. Enabling wants to be the go-to partner to bridge the gap between the two," says Bill Vollerthum, President of Enabling Technologies Corp.

As The VoIP Phone System for Exchange Server 2007, AltiGen enables companies to have a complete, pre-integrated real time voice and messaging platform -- all based on the Microsoft platform. With support for Outlook Voice Access (OVA) its customers now have full access to their voicemail, e-mail messages and calendars via a simple phone call from anywhere in the world.

About Enabling Technologies Corp.

Enabling Technologies Corp. is a global IT consulting practice specializing in Microsoft Exchange messaging architecture. Established in 1992, it built its distinguished reputation on leveraging client's messaging investment for maximum ROI. Enabling's core competencies for leveraging Exchange are concentrated in the areas of voicemail, fax, email, IM, electronic archival and content monitoring, anti-spam, and wireless applications. For more information on Enabling Technologies visit: http://www.enablingtechcorp.com/.

About AltiGen Communications

AltiGen Communications, Inc. is a pioneering manufacturer of VoIP business telephone systems and call-center solutions. AltiGen designs, manufactures and markets advanced IP-PBX telephone systems and IP call centers that leverage both the Internet and the public telephone network. These products enable an array of applications that take advantage of the convergence of voice and data communications to achieve superior business results. AltiGen Communications products are available from independent, authorized resellers and strategic partners. AltiGen's AltiServ(TM) family of telephony solutions has been recognized for excellence with more than 40 industry awards since 1996. Focused on the small- to mid- sized and multi-site businesses, AltiGen customers benefit from integrated solutions that protect their existing investments, while providing new ways to be more competitive, productive and

to save money. For more information, call 1-888-ALTIGEN or visit the Web site at http://www.altigen.com/.

Safe Harbor Statement

This press release contains forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, including, without limitation, statements regarding the continued market acceptance of our voice-over-IP telephone systems, call-center solutions, and a successful partnership with Enabling Technologies Corporation covering Exchange 2007 integration. These statements reflect management's current expectation. However, actual results could differ materially as a result of unknown risks and uncertainties, including but not limited to, risks related to AltiGen's limited operating history. For a more detailed description of these and other risks and uncertainties affecting AltiGen's performance, please refer to AltiGen's Annual Report on Form 10-K for the fiscal year ended September 30, 2007, and all subsequent current reports on Form 8-K and quarterly reports on Form 10-Q. All forward-looking statements in this press release are based on information available to AltiGen as of the date hereof, and AltiGen assumes no obligation to update these forward-looking statements.