AltiGen’s ExtensionAnywhere mobile technology coupled with Multi-Tech Systems’ portfolio of CallFinder cellular gateways offer increased cost savings for companies with remote and mobile workers

Fremont, California, September 28, 2007 — AltiGen® Communications, Inc. (NASDAQ: ATGN), a pioneering manufacturer of VoIP business phone systems and call center solutions, and Multi-Tech Systems, Inc., a leading manufacturer of products that connect voice and data over IP networks, are teaming up to deliver a complete mobile communications solution.By bundling the Multi-Tech CallFinder® GSM and CDMA cellular gateways with the AltiGen Office and MAX1000 series of VoIP Business Phone Systems, the companies seamlessly bridge an AltiGen phone system to a cellular network. The AltiGen - Multi-Tech Systems product combination enables businesses to save telecommunications costs by taking advantage of lower cost cellular networks for routing calls rather than traditional landlines. By utilizing the AltiGen ExtensionAnywhere™ feature to route calls through a cellular network, the CallFinders will provide toll-free calling between headquarters and cell phones in the field. The CallFinder gateways can also provide back-up communications, including emergency 911 services, in the event of central office public switched telephone network (PSTN) failure.

According to Dan Nelson, Vice President of Sales, North America for Multi-Tech Systems, “The ExtensionAnywhere feature of AltiGen makes it possible for users to receive extension calls on their cellular phones and provides an excellent complement to the Multi-Tech CallFinder. Routing ExtensionAnywhere calls through the cellular gateway to the remote user’s cell phone results in a free in-network cellular-to-cellular call. Our product combination will bring better performing telephony at a lower cost to a wide variety of applications and vertical markets.”

“The trend toward mobile, remote and distributed workers continues to grow and our collaboration provides an exciting opportunity for AltiGen and Multi-Tech Systems,” said Jeremiah Fleming, President and COO of AltiGen. “This new bundled solution will enable companies to improve their business communications capabilities in a more efficient, cost effective way than previously possible. This further demonstrates AltiGen’s commitment to deliver the most complete Unified Communications solution.”

About Multi-Tech
Multi-Tech Systems is an ISO 9001:2000 certified global manufacturer of telephony, Internet and device networking products connecting voice and data over IP networks. Multi-Tech Systems has 75 U.S. patents and numerous international patents. Contact Multi-Tech in the U.S. at 800/328-9717 or +763/785-3500, via fax at +763/785-9874, EMEA at +(44) 118 959 7774 (UK) or +(33) 1 49 19 22 06 (France), or via fax at +(44) 118 959 7775 (UK) or +(33) 1 49 19 21 00 (France) or at http://www.multitech.com.

About AltiGen Communications
AltiGen Communications, Inc. (NASDAQ: ATGN) is a leading provider of Microsoft-based Unified Communications for Small-to-Medium Businesses (SMBs), including companies with multiple locations, corporate branch offices, and call centers. AltiGen began deploying systems in 1996 and was one of the first companies to offer VoIP solutions. 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 our products to integrate with and leverage our partner’s and customer’s existing technology investment. For more information, call 1-888-ALTIGEN or visit the Web site at www.altigen.com.

Fremont, CA – August 27, 2007 - AltiGen Communications, Inc. (Nasdaq: ATGN), a leading provider of next generation IP-PBX phone systems, today announced it plans to present at the Kaufman Brothers 10th Annual Investor Conference at the W Hotel in New York City on September 6, 2007 at 9:10 a.m. ET. Presenting from management will be Jeremiah Fleming, president and COO and Phil McDermott, chief financial officer.

A live webcast of management’s presentation will be accessible from the company’s website: www.altigen.com. In addition, a replay of the webcast will be available.

About AltiGen Communications
AltiGen Communications, Inc. (Nasdaq: ATGN) is a leading manufacturer of VoIP telephony 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 AltiServâ„¢ 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 Website at www.altigen.com

AltiGen has tested and certified Symantec AntiVirus 10.1 Enterprise Edition for the MAX1000.
Under Symantec AntiVirus > Configurate > File System Auto-Protect >
> Exclude selected files and folders > Exclusions > Files/Folders, exclude the following folders:
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\postoffice
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\AltiServ
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\AltiDB
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FRANKFURT, Germany - A two-day outage that left millions of Skype users unable to use the popular Internet phone service was caused by an abnormally high number of restarts after people had downloaded a Windows security update, the company said Monday.

The worldwide outage, which began on Thursday and ended on Saturday, left millions of Skype users unable to log on to make phone calls or send instant messages.

Luxembourg-based Skype Ltd., part of online auction giant eBay Inc. (nasdaq: EBAY - news - people ), has more than 220 million users in total but typically has 5 million to 6 million users online at any given time. In January, Skype reported that it had counted 9 million users online at one time.

In an update to users on Skype’s Heartbeat blog, employee Villu Arak said the disruption was not because of hackers or any other malicious activity.

Instead, he said that the disruption “was triggered by a massive restart of our users’ computers across the globe within a very short timeframe as they re-booted after receiving a routine set of patches through Windows Update,” Arak wrote.

Microsoft Corp. (nasdaq: MSFT - news - people ) released its monthly patches last Tuesday, and many computers are set to automatically download and install them. Installation requires a computer restart.

“The high number of restarts affected Skype’s network resources. This caused a flood of log-in requests, which, combined with the lack of peer-to-peer network resources, prompted a chain reaction that had a critical impact,” Arak wrote.

Arak did not blame Microsoft for the troubles and said the outage ultimately rested with Skype. Arak said Skype’s network normally has an ability to heal itself in such cases, but a previously unknown glitch in Skype’s software prevented that from occurring quickly enough.

In a statement, Microsoft described its patch as routine and reiterated that the disruption resulted from a bug in Skype software.

Users from Vietnam to Brazil to Germany to the United States had complained they could not log on and make phone calls or send instant messages.

The outage was a critical moment for the company, founded in 2003 by Niklas Zennstrom and Janus (nyse: JNS - news - people ) Friis, and was the first major outage since October 2005 when its service was down only for a few hours.

“This disruption was unprecedented in terms of its impact and scope,” Arak wrote. “We would like to point out that very few technologies or communications networks today are guaranteed to operate without interruptions.”