When: Wednesday, July 23, 2008 2:00 PM Pacific Time (5:00 PM Eastern Time)

Who: Jerry Fleming, President and Chief Operating Officer and Phil McDermott, Chief Financial Officer

What: AltiGen Communications, Inc. (Nasdaq: ATGN - News) plans to host a teleconference to announce fiscal 2008 third quarter results.

How: Dial (800) 895-0198 (domestic) or (785) 424-1053 (international) to listen in to the call. The conference call ID is “7AltiGen.” A live Webcast will also be made available here. A telephonic replay will be available approximately one hour after the call through July 25, 2008. To access the replay, dial (800) 283-4605 or (402) 220-0874. A Web archive will be made available here for 90 days following the call's conclusion.