FREMONT, CA--(Marketwire - November 11, 2008) - AltiGen® 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, announces the availability of Service Pack 1 for AltiGen's MAX Communications Server 6.0 VoIP unified communications platform.

MAX Communicator Server (MAXCS) 6.0 Service Pack 1 offers many improvements on existing features while adding new features. New features include:

--  New server redundancy options with "hot standby support" for mission
    critical environments
--  802.1q support for VLANs for increased Quality of Service
--  New single T1/PRI/E1access board for the MAX1000 and MAX1000R servers
--  Enhanced Microsoft Office Communications Server 2007 support
    

"With our flexible, software based unified communications solution AltiGen is uniquely positioned to provide our customers with value-add feature enhancements during the product's life cycle without the need for traditional "forklift" upgrades commonly required of older, legacy phone systems," said Jimmin Yao, vice president of product management. "AltiGen's software based softswitch architecture gives IT departments the flexibility to deploy the features they need as soon as they become available while simultaneously increasing the AltiGen product's return on investment while lower their company's total cost of ownership."

The MAX Communications Server (MAXCS) 6.0 is AltiGen's next generation full-featured VoIP phone system and unified communications solution designed for businesses with support for up to 5,000 users. To increase scalability, the new VoIP switching architecture of MAXCS 6.0 utilizes standard Intel® based servers to handle all VoIP voice processing.

MAX Communications Server 6.0 key features and benefits include the following:

--  Native Microsoft Exchange Server 2007 integration for a complete
    unified messaging solution
--  New software based distributed softswitch architecture with support
    for 1,000 users on a single server
--  New .NET based desktop telephony client with enhanced call control
    features
--  Integration with Microsoft Office Communicator to deliver rich
    presence management
--  Expanded meet-me conference bridge with scheduling application
    supporting 120 participants
    

"As AltiGen moves further upstream in the market, our ability to continually add and improve upon our products core capabilities is critical to meeting the demands of our customers," said AltiGen President Jeremiah Fleming. "With the increased scalability available from a software based softswitch and the new redundancy and QoS features available in MAXCS Service Pack 1, AltiGen is well positioned to compete and sell into larger opportunities."

Availability

MAX Communications Server Service Pack 1 is now generally available and can be obtain by contacting your local Authorized AltiGen Partner.

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 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, AltiGen's successful introduction of our new MAX Communications Server 6.0 and the scalability of the soft switch architecture in the market place. 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.