The Greensheet Deploys Unified Communications and Contact Center Solution From AltiGen to Support Over 2,000,000 Readers

FREMONT, CA--(Marketwire - May 28, 2009) - AltiGen Communications, Inc. (NASDAQ: ATGN), a leading provider of 100 percent Microsoft-based VoIP business phone systems, today announced it has deployed a unified communications solution for The Greensheet. Based in Texas, The Greensheet (www.thegreensheet.com) is a weekly shopper publication and e-commerce website that has brought buyers and sellers together for nearly 40 years in the cities of Houston, Austin, Dallas, Fort Worth and Phoenix.

"With nearly half a million monthly web visits and over two million monthly readers of our print publication, we needed a solution that could integrate all of our operations while dealing with high call volumes," said Michael Joplin, General Manager of e-Commerce at The Greensheet. "With AltiGen, we have implemented a single site solution that supports more than 100 call center agents and 200 telephones distributed across five cities. At the same time, we have been able to significantly reduce our telecom and support costs."

In the past year, Greensheet conducted an in-depth evaluation of leading VoIP phone systems and call center products. The challenge was to find a system meeting the following criteria:

• An integrated, software solution based on standards such as Microsoft
• A single Houston-based system capable of supporting all five cities
• Intuitive design to allow call center supervisors to make real time changes without involvement of IT department or outside service vendor
• Full time automatic recording of all calls to ensure the highest quality service
• Comprehensive reporting of all call routing and activity
• Ability for agents to work remotely using mobile or home telephones in the event of a disaster or approved personal need such as a child's illness

AltiGen worked with The Greensheet to design the ideal solution. An integrated application server was deployed with 224 Voice over IP phones connecting back from the five cities. System management is conducted from an easy to use, integrated software application. All calls are automatically recorded and stored on a network storage location for easy access. AltiGen's unique "mobile extension" capability allows agents and employees to "log in" to the call center and be part of a call queue using a remote VoIP, cellular or even home phone. All calls are recorded and reported on regardless of the device being used.

"With AltiGen, we have found a solution that meets our tough requirements today, and will evolve and keep up as we continue to grow," said Joplin.

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.

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 and AltiGen's ability to successfully implement communications solutions that provide cost reduction opportunities for its end users. 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, 2008 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.