Fremont, California, November 19, 2007 — AltiGen® Communications, Inc.
(NASDAQ:ATGN), an award-winning provider of unified communications and VoIP
business phone systems, has entered into a distribution agreement with Jenne
Distributors, Inc., one of the largest distributors of networking and VoIP telephony
products in North America.

"Our agreement with a premier master distributor accelerates our effort to drive
revenue through broader distribution,” said AltiGen President and COO Jeremiah
Fleming. "Jenne brings a technically knowledgeable inside sales team, a national field
sales force, skilled technical support and the ability to offer superior technical training to
thousands of resellers via Jenne University, coupled with state-of-the-art distribution and
stocking facilities. We are very excited about our relationship and believe it will begin to
significantly contribute to revenue in 2008.”

"Jenne is delighted to work with AltiGen Communications, a leader in unified
communications, IP PBXs and call-center solutions for the SMB market. We are excited
to offer and promote AltiGen’s industry-leading telephony products,” said Rose Jenne,
president and CEO of Jenne Distributors. "AltiGen has the right mix of product features
and the competitive edge that is needed to build and grow new markets.”

Jenne Distributors will offer its channel partners AltiGen’s complete line of business
phone system products, including the award-winning MAX1000 and OFFICE series of
VoIP phone systems. Specialized sales and technical training via Jenne University will be
available to quickly ramp-up new AltiGen resellers.

About Jenne Distributors, Inc.
Jenne is a leading North American supplier of business telephone, data and computer
telephony products and solutions. Since the company's founding in 1986, Jenne has
been committed to providing dealers and value-added resellers with a broad product
selection, competitive pricing, fast delivery, outstanding technical support, plus
ongoing sales and technical training. Jenne strives to offer the most comprehensive
personal attention in the industry. For this reason, Jenne has formed strategic alliances
with more than 120 manufacturers to insure continued assistance with clients' growing
needs. Jenne offers turnkey solutions for all enterprises, large or small. Jenne is
dedicated to helping resellers enter and thrive in the telecommunications and data
markets. Jenne is committed to the converged marketplace and will continue to offer
solutions, new equipment and related applications as they emerge. For more
information on Jenne Distributors visit www.jenne.com or call 1.800.422.6191.

About AltiGen Communications
AltiGen Communications, Inc. is a pioneering manufacturer of VoIP business phone
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™ 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 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 call-center solutions in the SMB market, and the ability for Jenne Distributors, Inc. to
significantly contribute to our revenue in 2008. 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, 2006, 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.