Digital IP and AltiGen Communications Partner to Deliver Contact Centre and Mobility Solutions for Microsoft Lync Server in the UK

SAN JOSE, CA--(Marketwire - Jun 28, 2011) - AltiGen Communications, Inc. (PINKSHEETS: ATGN) (OTCQX: ATGN), the leading provider of integrated Microsoft-based Unified Communications solutions, expands its presence in the UK with the addition of Digital IP to its global partner network.

Digital IP, a Microsoft® Gold Unified Communications Partner, has its Head Office in City Park Business Centre in Glasgow, with branch offices in Edinburgh and Aberdeen. Digital IP is a leading IT and Telecommunication company specializing in the convergence and integration of Telecommunications, IT and Mobile technologies. A best of breed products and services strategy enable Digital IP to design and implement state of the art solutions which increase their customers' productivity and efficiencies.

"Customers are increasingly realizing how Unified Communications can improve the ways their employees communicate," said Keith Inch, Managing Director of Digital IP. "The launch of Microsoft Lync Server last fall has further accelerated UC deployments. As a leading Microsoft UC Partner in the UK, with the objective of delivering best of breed solutions to our customers, we were keen to offer an integrated UC solution which included both Contact Centre and Unified Mobile Convergence capabilities. As the leading vendor of these solutions, AltiGen was the obvious choice for Digital IP."

"The UK market represents a large, relatively untapped market for AltiGen," said Paul Fullman, AltiGen's VP of Sales for the UK and Europe. The success of Digital IP in this market and their status as a key Microsoft UC Partner, make them an ideal partner for us. With Microsoft Lync Server really starting to take off in this market, and AltiGen's unique ability to enhance the Lync functionality with both Contact Centre and Unified Mobile Convergence solutions, the timing couldn't be better to kick off this partnership."

About AltiGen Communications
AltiGen Communications, Inc. (PINKSHEETS: ATGN) (OTCQX: ATGN) is a leading provider of Unified Mobile Convergence and Contact Center solutions for Microsoft Lync Server. Designed to address the business communications requirements of both enterprise and service provider organizations, our solutions consist of innovative software applications and the industry's first integrated communications docking stations. AltiGen is headquartered in San Jose, California, with international operations based in Shanghai, China, with a global network of business partners providing local sales, service and support to more than 10,000 customers worldwide. 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 unified communications solutions, our ability to interface to Microsoft's Lync Server, our ability to ensure a successful partnership with Digital IP, and to be able to take advantage of a large market opportunity. 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, 2010. 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.