Mexico's Leading Home Builder Engineers Growth With AltiGen Unified Communications Solution

SAN JOSE, CA--(Marketwire - August 3, 2009) - AltiGen Communications, Inc. (NASDAQ: ATGN), a leading provider of 100 percent Microsoft-based VoIP business phone systems and unified communications solutions, today announced that it has now been deployed in more than 50 locations for Mexico's largest home builder.

URBI Desarrollos Urbanos S.A. de C.V. is a leader in Mexico's housing sector with more than 300,000 homes built to date. The company focuses on Northern Mexico, which contains the country's highest population growth. URBI has driven rapid growth by utilizing state-of-the-art technology and enjoys some of the highest profits in Mexico's home building industry.

"The aggressive expansion that URBI is executing demands technology that is flexible, scalable and cost effective," said Tim Tolman, Managing Partner of San Diego-based Digital I/O. "As URBI's technology partner, we designed an integrated solution that leverages and extends the company's data infrastructure. AltiGen's software-based communication solution allows for rapid growth with minimal support overhead."

In implementing AltiGen, URBI was able to:

--  Integrate all business locations across the country
--  Route internal calls across the company's MPLS Network for significant
    savings
--  Enable the company's IT staff to centrally manage all locations
--  Provide a modular, reliable and cost-efficient model for rapid
    deployment
--  Enhance communications with a reliable nationwide dialing plan
--  Utilize VoIP over wireless to provide reliable communications in areas
    where telecommunications infrastructure doesn't exist
--  Improve performance using advanced applications such as AltiGen's
    integrated IP-based conference bridge and intelligent call routing
    

The solution is deployed using AltiGen's integrated application gateway. The servers provide local dial tone connectivity, intelligent routing through the company's MPLS network and integrated applications such as voice mail, auto attendant, call routing and conferencing. Systems communicate and synchronize automatically over the company's data network.

"AltiGen's scalable, integrated IP communications solution is a natural fit for companies with multiple branch offices, as evidenced by URBI's growing deployment," said Michael Curry, AltiGen's Manager of International Channels. "Enabling companies to truly integrate communications across the enterprise while centrally managing the system is one of the primary strengths of the AltiGen solution."

"By utilizing AltiGen's unique integrated design, we are able to provide seamless communications across the country while ensuring cost effective, stand alone survivability in the event of a dial tone or network outage," added Tolman. "The initial investment was rapidly recovered from the savings we were able to realize for the client."

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 continue to provide seamless communications across the country while ensuring cost effective, stand alone survivability in the event of a dial tone or network outage. 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.